From a2f2aa97ad702ba76a121dca6fc664a35133b914 Mon Sep 17 00:00:00 2001 From: Ryan Dahl Date: Thu, 7 Jul 2011 08:56:48 -0700 Subject: [PATCH] Upgrade libuv to 9518ab65949257384bf7e407d8502a6437fdda4b --- deps/uv/Makefile | 89 +- deps/uv/c-ares/AUTHORS | 37 - deps/uv/c-ares/CHANGES | 1198 -- deps/uv/c-ares/CMakeLists.txt | 22 - deps/uv/c-ares/NEWS | 21 - deps/uv/c-ares/README | 60 - deps/uv/c-ares/README.cares | 13 - deps/uv/c-ares/README.msvc | 118 - deps/uv/c-ares/README.node | 21 - deps/uv/c-ares/RELEASE-NOTES | 25 - deps/uv/c-ares/TODO | 23 - deps/uv/c-ares/ares.h | 581 - deps/uv/c-ares/ares__close_sockets.c | 66 - deps/uv/c-ares/ares__get_hostent.c | 263 - deps/uv/c-ares/ares__read_line.c | 71 - deps/uv/c-ares/ares__timeval.c | 111 - deps/uv/c-ares/ares_cancel.c | 63 - deps/uv/c-ares/ares_data.c | 190 - deps/uv/c-ares/ares_data.h | 65 - deps/uv/c-ares/ares_destroy.c | 105 - deps/uv/c-ares/ares_dns.h | 90 - deps/uv/c-ares/ares_expand_name.c | 193 - deps/uv/c-ares/ares_expand_string.c | 75 - deps/uv/c-ares/ares_fds.c | 62 - deps/uv/c-ares/ares_free_hostent.c | 39 - deps/uv/c-ares/ares_free_string.c | 25 - deps/uv/c-ares/ares_gethostbyaddr.c | 292 - deps/uv/c-ares/ares_gethostbyname.c | 515 - deps/uv/c-ares/ares_getnameinfo.c | 426 - deps/uv/c-ares/ares_getopt.c | 122 - deps/uv/c-ares/ares_getopt.h | 53 - deps/uv/c-ares/ares_getsock.c | 72 - deps/uv/c-ares/ares_init.c | 1665 --- deps/uv/c-ares/ares_ipv6.h | 78 - deps/uv/c-ares/ares_library_init.c | 132 - deps/uv/c-ares/ares_library_init.h | 39 - deps/uv/c-ares/ares_llist.c | 86 - deps/uv/c-ares/ares_llist.h | 42 - deps/uv/c-ares/ares_mkquery.c | 195 - deps/uv/c-ares/ares_nowarn.c | 59 - deps/uv/c-ares/ares_nowarn.h | 24 - deps/uv/c-ares/ares_options.c | 253 - deps/uv/c-ares/ares_parse_a_reply.c | 258 - deps/uv/c-ares/ares_parse_aaaa_reply.c | 256 - deps/uv/c-ares/ares_parse_mx_reply.c | 170 - deps/uv/c-ares/ares_parse_ns_reply.c | 182 - deps/uv/c-ares/ares_parse_ptr_reply.c | 208 - deps/uv/c-ares/ares_parse_srv_reply.c | 179 - deps/uv/c-ares/ares_parse_txt_reply.c | 201 - deps/uv/c-ares/ares_private.h | 351 - deps/uv/c-ares/ares_process.c | 1296 -- deps/uv/c-ares/ares_query.c | 183 - deps/uv/c-ares/ares_rules.h | 144 - deps/uv/c-ares/ares_search.c | 322 - deps/uv/c-ares/ares_send.c | 134 - deps/uv/c-ares/ares_setup.h | 197 - deps/uv/c-ares/ares_strcasecmp.c | 66 - deps/uv/c-ares/ares_strcasecmp.h | 30 - deps/uv/c-ares/ares_strdup.c | 42 - deps/uv/c-ares/ares_strdup.h | 26 - deps/uv/c-ares/ares_strerror.c | 56 - deps/uv/c-ares/ares_timeout.c | 80 - deps/uv/c-ares/ares_version.c | 11 - deps/uv/c-ares/ares_version.h | 24 - deps/uv/c-ares/ares_writev.c | 79 - deps/uv/c-ares/ares_writev.h | 36 - deps/uv/c-ares/bitncmp.c | 59 - deps/uv/c-ares/bitncmp.h | 26 - deps/uv/c-ares/config-win32.h | 357 - deps/uv/c-ares/config_cygwin/ares_config.h | 510 - deps/uv/c-ares/config_darwin/ares_config.h | 510 - deps/uv/c-ares/config_freebsd/ares_config.h | 510 - deps/uv/c-ares/config_linux/ares_config.h | 510 - deps/uv/c-ares/config_openbsd/ares_config.h | 510 - deps/uv/c-ares/config_sunos/ares_config.h | 510 - deps/uv/c-ares/config_win32/ares_config.h | 510 - deps/uv/c-ares/get_ver.awk | 35 - deps/uv/c-ares/inet_net_pton.c | 450 - deps/uv/c-ares/inet_net_pton.h | 31 - deps/uv/c-ares/inet_ntop.c | 232 - deps/uv/c-ares/inet_ntop.h | 26 - deps/uv/c-ares/nameser.h | 193 - deps/uv/c-ares/setup_once.h | 488 - deps/uv/c-ares/windows_port.c | 22 - deps/uv/config-mingw.mk | 34 +- deps/uv/config-unix.mk | 57 +- deps/uv/desired-api.md | 159 - deps/uv/eio/Changes | 35 - deps/uv/eio/LICENSE | 36 - deps/uv/eio/Makefile.am | 15 - deps/uv/eio/aclocal.m4 | 8957 ------------ deps/uv/eio/autogen.sh | 5 - deps/uv/eio/config.h.in | 86 - deps/uv/eio/config_cygwin.h | 77 - deps/uv/eio/config_darwin.h | 82 - deps/uv/eio/config_freebsd.h | 78 - deps/uv/eio/config_linux.h | 81 - deps/uv/eio/config_sunos.h | 81 - deps/uv/eio/configure.ac | 22 - deps/uv/eio/demo.c | 194 - deps/uv/eio/eio.3 | 3428 ----- deps/uv/eio/eio.c | 2133 --- deps/uv/eio/eio.h | 356 - deps/uv/eio/eio.pod | 303 - deps/uv/eio/libeio.m4 | 156 - deps/uv/eio/xthread.h | 161 - deps/uv/ev/Changes | 388 - deps/uv/ev/LICENSE | 36 - deps/uv/ev/Makefile.am | 18 - deps/uv/ev/Makefile.in | 771 -- deps/uv/ev/README | 58 - deps/uv/ev/aclocal.m4 | 8957 ------------ deps/uv/ev/autogen.sh | 6 - deps/uv/ev/config.guess | 1526 -- deps/uv/ev/config.h.in | 125 - deps/uv/ev/config.sub | 1658 --- deps/uv/ev/config_cygwin.h | 123 - deps/uv/ev/config_darwin.h | 122 - deps/uv/ev/config_freebsd.h | 120 - deps/uv/ev/config_linux.h | 122 - deps/uv/ev/config_sunos.h | 122 - deps/uv/ev/configure | 13037 ------------------ deps/uv/ev/configure.ac | 18 - deps/uv/ev/depcomp | 630 - deps/uv/ev/ev++.h | 816 -- deps/uv/ev/ev.3 | 5311 ------- deps/uv/ev/ev.c | 3913 ------ deps/uv/ev/ev.h | 829 -- deps/uv/ev/ev.pod | 5243 ------- deps/uv/ev/ev_epoll.c | 266 - deps/uv/ev/ev_kqueue.c | 198 - deps/uv/ev/ev_poll.c | 148 - deps/uv/ev/ev_port.c | 179 - deps/uv/ev/ev_select.c | 310 - deps/uv/ev/ev_vars.h | 203 - deps/uv/ev/ev_win32.c | 153 - deps/uv/ev/ev_wrap.h | 196 - deps/uv/ev/event.c | 402 - deps/uv/ev/event.h | 170 - deps/uv/ev/install-sh | 294 - deps/uv/ev/libev.m4 | 39 - deps/uv/ev/ltmain.sh | 8413 ----------- deps/uv/ev/missing | 336 - deps/uv/ev/mkinstalldirs | 111 - deps/uv/iocp-links.html | 574 - deps/uv/ngx-queue.h | 102 - deps/uv/test/benchmark-ares.c | 2 +- deps/uv/test/benchmark-getaddrinfo.c | 2 +- deps/uv/test/benchmark-ping-pongs.c | 2 +- deps/uv/test/benchmark-pump.c | 2 +- deps/uv/test/benchmark-sizes.c | 2 +- deps/uv/test/dns-server.c | 2 +- deps/uv/test/echo-server.c | 11 +- deps/uv/test/runner-unix.c | 2 +- deps/uv/test/test-async.c | 2 +- deps/uv/test/test-bind-error.c | 2 +- deps/uv/test/test-bind6-error.c | 2 +- deps/uv/test/test-callback-stack.c | 2 +- deps/uv/test/test-connection-fail.c | 2 +- deps/uv/test/test-delayed-accept.c | 2 +- deps/uv/test/test-get-currentexe.c | 2 +- deps/uv/test/test-getaddrinfo.c | 2 +- deps/uv/test/test-gethostbyname.c | 2 +- deps/uv/test/test-hrtime.c | 2 +- deps/uv/test/test-loop-handles.c | 2 +- deps/uv/test/test-ping-pong.c | 2 +- deps/uv/test/test-shutdown-eof.c | 2 +- deps/uv/test/test-tcp-writealot.c | 2 +- deps/uv/test/test-timer-again.c | 2 +- deps/uv/test/test-timer.c | 2 +- deps/uv/tree.h | 762 - deps/uv/uv-common.c | 159 - deps/uv/uv-common.h | 51 - deps/uv/uv-cygwin.c | 52 - deps/uv/uv-darwin.c | 64 - deps/uv/uv-eio.c | 113 - deps/uv/uv-eio.h | 13 - deps/uv/uv-freebsd.c | 49 - deps/uv/uv-linux.c | 55 - deps/uv/uv-sunos.c | 61 - deps/uv/uv-unix.c | 1584 --- deps/uv/uv-unix.h | 120 - deps/uv/uv-win.c | 2437 ---- deps/uv/uv-win.h | 130 - deps/uv/uv.h | 494 - wscript | 23 +- 186 files changed, 131 insertions(+), 96371 deletions(-) delete mode 100644 deps/uv/c-ares/AUTHORS delete mode 100644 deps/uv/c-ares/CHANGES delete mode 100644 deps/uv/c-ares/CMakeLists.txt delete mode 100644 deps/uv/c-ares/NEWS delete mode 100644 deps/uv/c-ares/README delete mode 100644 deps/uv/c-ares/README.cares delete mode 100644 deps/uv/c-ares/README.msvc delete mode 100644 deps/uv/c-ares/README.node delete mode 100644 deps/uv/c-ares/RELEASE-NOTES delete mode 100644 deps/uv/c-ares/TODO delete mode 100644 deps/uv/c-ares/ares.h delete mode 100644 deps/uv/c-ares/ares__close_sockets.c delete mode 100644 deps/uv/c-ares/ares__get_hostent.c delete mode 100644 deps/uv/c-ares/ares__read_line.c delete mode 100644 deps/uv/c-ares/ares__timeval.c delete mode 100644 deps/uv/c-ares/ares_cancel.c delete mode 100644 deps/uv/c-ares/ares_data.c delete mode 100644 deps/uv/c-ares/ares_data.h delete mode 100644 deps/uv/c-ares/ares_destroy.c delete mode 100644 deps/uv/c-ares/ares_dns.h delete mode 100644 deps/uv/c-ares/ares_expand_name.c delete mode 100644 deps/uv/c-ares/ares_expand_string.c delete mode 100644 deps/uv/c-ares/ares_fds.c delete mode 100644 deps/uv/c-ares/ares_free_hostent.c delete mode 100644 deps/uv/c-ares/ares_free_string.c delete mode 100644 deps/uv/c-ares/ares_gethostbyaddr.c delete mode 100644 deps/uv/c-ares/ares_gethostbyname.c delete mode 100644 deps/uv/c-ares/ares_getnameinfo.c delete mode 100644 deps/uv/c-ares/ares_getopt.c delete mode 100644 deps/uv/c-ares/ares_getopt.h delete mode 100644 deps/uv/c-ares/ares_getsock.c delete mode 100644 deps/uv/c-ares/ares_init.c delete mode 100644 deps/uv/c-ares/ares_ipv6.h delete mode 100644 deps/uv/c-ares/ares_library_init.c delete mode 100644 deps/uv/c-ares/ares_library_init.h delete mode 100644 deps/uv/c-ares/ares_llist.c delete mode 100644 deps/uv/c-ares/ares_llist.h delete mode 100644 deps/uv/c-ares/ares_mkquery.c delete mode 100644 deps/uv/c-ares/ares_nowarn.c delete mode 100644 deps/uv/c-ares/ares_nowarn.h delete mode 100644 deps/uv/c-ares/ares_options.c delete mode 100644 deps/uv/c-ares/ares_parse_a_reply.c delete mode 100644 deps/uv/c-ares/ares_parse_aaaa_reply.c delete mode 100644 deps/uv/c-ares/ares_parse_mx_reply.c delete mode 100644 deps/uv/c-ares/ares_parse_ns_reply.c delete mode 100644 deps/uv/c-ares/ares_parse_ptr_reply.c delete mode 100644 deps/uv/c-ares/ares_parse_srv_reply.c delete mode 100644 deps/uv/c-ares/ares_parse_txt_reply.c delete mode 100644 deps/uv/c-ares/ares_private.h delete mode 100644 deps/uv/c-ares/ares_process.c delete mode 100644 deps/uv/c-ares/ares_query.c delete mode 100644 deps/uv/c-ares/ares_rules.h delete mode 100644 deps/uv/c-ares/ares_search.c delete mode 100644 deps/uv/c-ares/ares_send.c delete mode 100644 deps/uv/c-ares/ares_setup.h delete mode 100644 deps/uv/c-ares/ares_strcasecmp.c delete mode 100644 deps/uv/c-ares/ares_strcasecmp.h delete mode 100644 deps/uv/c-ares/ares_strdup.c delete mode 100644 deps/uv/c-ares/ares_strdup.h delete mode 100644 deps/uv/c-ares/ares_strerror.c delete mode 100644 deps/uv/c-ares/ares_timeout.c delete mode 100644 deps/uv/c-ares/ares_version.c delete mode 100644 deps/uv/c-ares/ares_version.h delete mode 100644 deps/uv/c-ares/ares_writev.c delete mode 100644 deps/uv/c-ares/ares_writev.h delete mode 100644 deps/uv/c-ares/bitncmp.c delete mode 100644 deps/uv/c-ares/bitncmp.h delete mode 100644 deps/uv/c-ares/config-win32.h delete mode 100644 deps/uv/c-ares/config_cygwin/ares_config.h delete mode 100644 deps/uv/c-ares/config_darwin/ares_config.h delete mode 100644 deps/uv/c-ares/config_freebsd/ares_config.h delete mode 100644 deps/uv/c-ares/config_linux/ares_config.h delete mode 100644 deps/uv/c-ares/config_openbsd/ares_config.h delete mode 100644 deps/uv/c-ares/config_sunos/ares_config.h delete mode 100644 deps/uv/c-ares/config_win32/ares_config.h delete mode 100644 deps/uv/c-ares/get_ver.awk delete mode 100644 deps/uv/c-ares/inet_net_pton.c delete mode 100644 deps/uv/c-ares/inet_net_pton.h delete mode 100644 deps/uv/c-ares/inet_ntop.c delete mode 100644 deps/uv/c-ares/inet_ntop.h delete mode 100644 deps/uv/c-ares/nameser.h delete mode 100644 deps/uv/c-ares/setup_once.h delete mode 100644 deps/uv/c-ares/windows_port.c delete mode 100644 deps/uv/desired-api.md delete mode 100644 deps/uv/eio/Changes delete mode 100644 deps/uv/eio/LICENSE delete mode 100644 deps/uv/eio/Makefile.am delete mode 100644 deps/uv/eio/aclocal.m4 delete mode 100755 deps/uv/eio/autogen.sh delete mode 100644 deps/uv/eio/config.h.in delete mode 100644 deps/uv/eio/config_cygwin.h delete mode 100644 deps/uv/eio/config_darwin.h delete mode 100644 deps/uv/eio/config_freebsd.h delete mode 100644 deps/uv/eio/config_linux.h delete mode 100644 deps/uv/eio/config_sunos.h delete mode 100644 deps/uv/eio/configure.ac delete mode 100644 deps/uv/eio/demo.c delete mode 100644 deps/uv/eio/eio.3 delete mode 100644 deps/uv/eio/eio.c delete mode 100644 deps/uv/eio/eio.h delete mode 100644 deps/uv/eio/eio.pod delete mode 100644 deps/uv/eio/libeio.m4 delete mode 100644 deps/uv/eio/xthread.h delete mode 100644 deps/uv/ev/Changes delete mode 100644 deps/uv/ev/LICENSE delete mode 100644 deps/uv/ev/Makefile.am delete mode 100644 deps/uv/ev/Makefile.in delete mode 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deps/uv/ev/ev_vars.h delete mode 100644 deps/uv/ev/ev_win32.c delete mode 100644 deps/uv/ev/ev_wrap.h delete mode 100644 deps/uv/ev/event.c delete mode 100644 deps/uv/ev/event.h delete mode 100755 deps/uv/ev/install-sh delete mode 100644 deps/uv/ev/libev.m4 delete mode 100755 deps/uv/ev/ltmain.sh delete mode 100755 deps/uv/ev/missing delete mode 100755 deps/uv/ev/mkinstalldirs delete mode 100644 deps/uv/iocp-links.html delete mode 100644 deps/uv/ngx-queue.h delete mode 100644 deps/uv/tree.h delete mode 100644 deps/uv/uv-common.c delete mode 100644 deps/uv/uv-common.h delete mode 100644 deps/uv/uv-cygwin.c delete mode 100644 deps/uv/uv-darwin.c delete mode 100644 deps/uv/uv-eio.c delete mode 100644 deps/uv/uv-eio.h delete mode 100644 deps/uv/uv-freebsd.c delete mode 100644 deps/uv/uv-linux.c delete mode 100644 deps/uv/uv-sunos.c delete mode 100644 deps/uv/uv-unix.c delete mode 100644 deps/uv/uv-unix.h delete mode 100644 deps/uv/uv-win.c delete mode 100644 deps/uv/uv-win.h delete mode 100644 deps/uv/uv.h diff --git a/deps/uv/Makefile b/deps/uv/Makefile index 5c0ce0dbf5..d9de2aa2d5 100644 --- a/deps/uv/Makefile +++ b/deps/uv/Makefile @@ -24,51 +24,52 @@ ifdef MSVC uname_S := MINGW endif -CPPFLAGS += -Ic-ares/ +CPPFLAGS += -Iinclude + CARES_OBJS = -CARES_OBJS += c-ares/ares__close_sockets.o -CARES_OBJS += c-ares/ares__get_hostent.o -CARES_OBJS += c-ares/ares__read_line.o -CARES_OBJS += c-ares/ares__timeval.o -CARES_OBJS += c-ares/ares_cancel.o -CARES_OBJS += c-ares/ares_data.o -CARES_OBJS += c-ares/ares_destroy.o -CARES_OBJS += c-ares/ares_expand_name.o -CARES_OBJS += c-ares/ares_expand_string.o -CARES_OBJS += c-ares/ares_fds.o -CARES_OBJS += c-ares/ares_free_hostent.o -CARES_OBJS += c-ares/ares_free_string.o -CARES_OBJS += c-ares/ares_gethostbyaddr.o -CARES_OBJS += c-ares/ares_gethostbyname.o -CARES_OBJS += c-ares/ares_getnameinfo.o -CARES_OBJS += c-ares/ares_getopt.o -CARES_OBJS += c-ares/ares_getsock.o -CARES_OBJS += c-ares/ares_init.o -CARES_OBJS += c-ares/ares_library_init.o -CARES_OBJS += c-ares/ares_llist.o -CARES_OBJS += c-ares/ares_mkquery.o -CARES_OBJS += c-ares/ares_nowarn.o -CARES_OBJS += c-ares/ares_options.o -CARES_OBJS += c-ares/ares_parse_a_reply.o -CARES_OBJS += c-ares/ares_parse_aaaa_reply.o -CARES_OBJS += c-ares/ares_parse_mx_reply.o -CARES_OBJS += c-ares/ares_parse_ns_reply.o -CARES_OBJS += c-ares/ares_parse_ptr_reply.o -CARES_OBJS += c-ares/ares_parse_srv_reply.o -CARES_OBJS += c-ares/ares_parse_txt_reply.o -CARES_OBJS += c-ares/ares_process.o -CARES_OBJS += c-ares/ares_query.o -CARES_OBJS += c-ares/ares_search.o -CARES_OBJS += c-ares/ares_send.o -CARES_OBJS += c-ares/ares_strcasecmp.o -CARES_OBJS += c-ares/ares_strdup.o -CARES_OBJS += c-ares/ares_strerror.o -CARES_OBJS += c-ares/ares_timeout.o -CARES_OBJS += c-ares/ares_version.o -CARES_OBJS += c-ares/ares_writev.o -CARES_OBJS += c-ares/bitncmp.o -CARES_OBJS += c-ares/inet_net_pton.o -CARES_OBJS += c-ares/inet_ntop.o +CARES_OBJS += src/ares/ares__close_sockets.o +CARES_OBJS += src/ares/ares__get_hostent.o +CARES_OBJS += src/ares/ares__read_line.o +CARES_OBJS += src/ares/ares__timeval.o +CARES_OBJS += src/ares/ares_cancel.o +CARES_OBJS += src/ares/ares_data.o +CARES_OBJS += src/ares/ares_destroy.o +CARES_OBJS += src/ares/ares_expand_name.o +CARES_OBJS += src/ares/ares_expand_string.o +CARES_OBJS += src/ares/ares_fds.o +CARES_OBJS += src/ares/ares_free_hostent.o +CARES_OBJS += src/ares/ares_free_string.o +CARES_OBJS += src/ares/ares_gethostbyaddr.o +CARES_OBJS += src/ares/ares_gethostbyname.o +CARES_OBJS += src/ares/ares_getnameinfo.o +CARES_OBJS += src/ares/ares_getopt.o +CARES_OBJS += src/ares/ares_getsock.o +CARES_OBJS += src/ares/ares_init.o +CARES_OBJS += src/ares/ares_library_init.o +CARES_OBJS += src/ares/ares_llist.o +CARES_OBJS += src/ares/ares_mkquery.o +CARES_OBJS += src/ares/ares_nowarn.o +CARES_OBJS += src/ares/ares_options.o +CARES_OBJS += src/ares/ares_parse_a_reply.o +CARES_OBJS += src/ares/ares_parse_aaaa_reply.o +CARES_OBJS += src/ares/ares_parse_mx_reply.o +CARES_OBJS += src/ares/ares_parse_ns_reply.o +CARES_OBJS += src/ares/ares_parse_ptr_reply.o +CARES_OBJS += src/ares/ares_parse_srv_reply.o +CARES_OBJS += src/ares/ares_parse_txt_reply.o +CARES_OBJS += src/ares/ares_process.o +CARES_OBJS += src/ares/ares_query.o +CARES_OBJS += src/ares/ares_search.o +CARES_OBJS += src/ares/ares_send.o +CARES_OBJS += src/ares/ares_strcasecmp.o +CARES_OBJS += src/ares/ares_strdup.o +CARES_OBJS += src/ares/ares_strerror.o +CARES_OBJS += src/ares/ares_timeout.o +CARES_OBJS += src/ares/ares_version.o +CARES_OBJS += src/ares/ares_writev.o +CARES_OBJS += src/ares/bitncmp.o +CARES_OBJS += src/ares/inet_net_pton.o +CARES_OBJS += src/ares/inet_ntop.o ifneq (,$(findstring MINGW,$(uname_S))) include config-mingw.mk diff --git a/deps/uv/c-ares/AUTHORS b/deps/uv/c-ares/AUTHORS deleted file mode 100644 index e197a7419d..0000000000 --- a/deps/uv/c-ares/AUTHORS +++ /dev/null @@ -1,37 +0,0 @@ -c-ares is based on ares, and these are the people that have worked on it since -the fork was made: - -Alexander Lazic -Alexey Simak -Andreas Rieke -Ashish Sharma -Brad House -Brad Spencer -Bram Matthys -Dan Fandrich -Daniel Stenberg -Dirk Manske -Dominick Meglio -Doug Goldstein -Duncan Wilcox -Eino Tuominen -Erik Kline -George Neill -Gisle Vanem -Guilherme Balena Versiani -Gunter Knauf -Henrik Stoerner -James Bursa -Michael Wallner -Nick Mathewson -Phil Blundell -Ravi Pratap -Robin Cornelius -Sebastian at basti79.de -Shmulik Regev -Steinar H. Gunderson -Tofu Linden -Vlad Dinulescu -William Ahern -Yang Tse -liren at vivisimo.com diff --git a/deps/uv/c-ares/CHANGES b/deps/uv/c-ares/CHANGES deleted file mode 100644 index f739b46879..0000000000 --- a/deps/uv/c-ares/CHANGES +++ /dev/null @@ -1,1198 +0,0 @@ - Changelog for the c-ares project - -Version 1.7.4 (December 9, 2010) - -Changed: - - o local-bind: Support binding to local interface/IPs, see - ares_set_local_ip4, ares_set_local_ip6, ares_set_local_dev - -Fixed: - - o memory leak in ares_getnameinfo - o add missing break that caused get_ares_servers to fail - o ares_parse_a_reply: fix CNAME response parsing - o init_by_options: don't copy an empty sortlist - o Replaced uint32_t with unsigned int to fix broken builds - on a couple of platforms - o Fix lookup with HOSTALIASES set - o adig: fix NAPTR parsing - o compiler warning cleanups - -Version 1.7.3 (June 11, 2010) - -Fixed: - - o builds on Android - o now includes all files necessary to build it (1.7.2 lacked a file) - -Version 1.7.2 (June 10, 2010) - -Changed: - - o Added ares_parse_mx_reply() - -Fixed: - - o ares_init: Last, not first instance of domain or search should win - o improve alternative definition of bool - o fix VS2010 compiler warnings - - -Version 1.7.1 (Mar 23, 2010) - -* May 31, 2010 (Jakub Hrozek) -- Use the last instance of domain/search, not the first one - -* March 23, 2010 (Daniel Stenberg) -- We switched from CVS to git. See http://github.com/bagder/c-ares - -* March 5, 2010 (Daniel Stenberg) -- Daniel Johnson provided fixes for building with the clang compiler. - -* March 5, 2010 (Yang Tse) -- Added IPv6 name servers support. Implementation has been based on code, - comments and feedback provided November and December of 2008 by Daniel - Stenberg, Gregor Jasny, Phil Blundell and myself, December 2009 by Cedric - Bail, and February 2010 by Jakub Hrozek on the c-ares mailing list. On - March I reviewed all that, selected the best of each, and adjusted or - extended parts of it to make the best fit. - - The external and visible result of all this is that two new functions are - added to the external API, ares_get_servers() and ares_set_servers(), which - becomes now the preferred way of getting and setting name servers for any - ares channel as these support both IPv4 and IPv6 name servers. - - In order to not break ABI compatibility, ares_init_options() with option - mask ARES_OPT_SERVERS and ares_save_options() may still be used in code - which is intended to run on IPv4-only stacks. But remember that these - functions do not support IPv6 name servers. This implies that if the user - is capable of defining or providing an IPv6 name server, and the app is - using ares_init_options() or ares_save_options() at some point to handle - the name servers, the app will likely lose IPv6 name servers. - -* January 28, 2010 (Daniel Stenberg) -- Tommie Gannert pointed out a silly bug in ares_process_fd() since it didn't - check for broken connections like ares_process() did. Based on that, I - merged the two functions into a single generic one with two front-ends. - -* December 29, 2009 (Yang Tse) -- Laszlo Tamas Szabo adjusted Makefile.msvc compiler options so that where - run-time error checks enabling compiler option /GZ was used it is replaced - with equivalent /RTCsu for Visual Studio 2003 and newer versions. Option - /GX is replaced with equivalent /EHsc for all versions. Also fixed socket - data type for internal configure_socket function. - -* December 21, 2009 (Yang Tse) -- Ingmar Runge noticed that Windows config-win32.h configuration file - did not include a definition for HAVE_CLOSESOCKET which resulted in - function close() being inappropriately used to close sockets. - -Version 1.7.0 (Nov 30, 2009) - -* November 26, 2009 (Yang Tse) -- Larry Lansing fixed ares_parse_srv_reply to properly parse replies - which might contain non-SRV answers, skipping over potential non-SRV - ones such as CNAMEs. - -* November 23, 2009 (Yang Tse) -- Changed naming convention for c-ares libraries built with MSVC, details - and build instructions provided in README.msvc file. - -* November 22, 2009 (Yang Tse) -- Jakub Hrozek fixed more function prototypes in man pages to sync them - with the ones declared in ares.h - -- Jakub Hrozek renamed addrttl and addr6ttl structs to ares_addrttl and - ares_addr6ttl in order to prevent name space pollution, along with - necessary changes to code base and man pages.This change does not break - ABI, there is no need to recompile existing applications. But existing - applications using these structs with the old name will need source code - adjustments when recompiled using c-ares 1.7.0. - -* November 21, 2009 (Yang Tse) -- Added manifest stuff to Makefile.msvc. - -* November 20, 2009 (Yang Tse) -- Fixed several function prototypes in man pages that were out of sync - with the ones declared in ares.h. Added ares_free_data() along with - man page. Updated ares_parse_srv_reply() and ares_parse_txt_reply() - with changes from Jakub Hrozek making these now return linked lists - instead of arrays, and merging the ares_free_data() adjustments. - -* November 10, 2009 (Yang Tse) -- Updated MSVC 6.0 project files to match settings from Makefile.msvc. - -* November 9, 2009 (Yang Tse) -- Makefile.msvc is now the reference method to build c-ares and sample - programs with any MSVC compiler or MS Visual Studio version. If no - option or target are specified it builds dynamic and static c-ares - libraries in debug and release flavours and also builds all sample - programs using each of the different c-ares libraries. - -* November 2, 2009 (Yang Tse) -- Renamed c-ares setup.h to ares_setup.h - -* October 31, 2009 (Yang Tse) -- Symbol hiding configure options are named now --enable-symbol-hiding - and --disable-symbol-hiding in an attempt to make them less ambiguous. - -* October 30, 2009 (Yang Tse) -- Many fixes for ares_parse_txt_reply() - -* October 29, 2009 (Daniel Stenberg) -- Jakub Hrozek added ares_parse_txt_reply() for TXT parsing - -* October 29, 2009 (Yang Tse) -- Updated MSVC 6.0 workspace and project files that allows building - dynamic and static c-ares libraries in debug and release flavours. - Additionally each of the three sample programs is built against - each of the four possible c-ares libraries, generating all this - a total number of 12 executables and 4 libraries. - -* October 28, 2009 (Yang Tse) -- Initial step towards the ability to reduce c-ares exported symbols - when built as a shared library based on the 'visibility' attribute - for GNUC and Intel compilers and based on __global for Sun compilers, - taking also in account __declspec function decoration for Win32 and - Symbian DLL's. - -* October 27, 2009 (Yang Tse) -- Fixed Pelles C Win32 target compilation issues. - -* October 23, 2009 (Yang Tse) -- John Engelhart noticed an unreleased problem relative to a duplicate - ARES_ECANCELLED error code value and missing error code description. - -* October 7, 2009 (Yang Tse) -- Overhauled ares__get_hostent() Fixing out of bounds memory overwrite - triggered with malformed /etc/hosts file. Improving parsing of /etc/hosts - file. Validating requested address family. Ensuring that failures always - return a NULL pointer. Adjusting header inclusions. - -* October 6, 2009 (Yang Tse) -- Fix ssize_t redefinition errors on WIN64 reported by Alexey Simak. - -* September 29, 2009 (Yang Tse) -- Make configure script also check if _REENTRANT definition is required to - make errno available as a preprocessor macro. - -* September 7, 2009 (Yang Tse) -- Add T_SRV portability check to ares_parse_srv_reply.c - -* 4 Sep 2009 (Daniel Stenberg) -- Jakub Hrozek added ares_parse_srv_reply() for SRV parsing - -* 3 Aug 2009 (Daniel Stenberg) -- Joshua Kwan fixed the init routine to fill in the defaults for stuff that - fails to get inited by other means. This fixes a case of when the c-ares - init fails when internet access is fone. - -- Timo Teras changed the reason code used in the resolve callback done when - ares_cancel() is used, to be ARES_ECANCELLED instead of ARES_ETIMEOUT to - better allow the callback to know what's happening. - -* 14 Jul 2009 (Guenter Knauf) -- renamed generated config.h to ares_config.h to avoid any future clashes - with config.h from other projects. - -* June 20 2009 (Yang Tse) -- Refactor how libraries are checked for connect() function in configure - script and check for connect() as it is done for other functions. - -* June 19 2009 (Yang Tse) -- Make sclose() function-like macro definition used to close a socket, - now solely based on HAVE_CLOSESOCKET and HAVE_CLOSESOCKET_CAMEL - config file preprocessor definitions - -* June 18 2009 (Yang Tse) -- Add CloseSocket camel case function check for configure script. - -* June 17 2009 (Yang Tse) -- Check for socket() and closesocket() as it is done for other functions - in configure script. - -* June 11 2009 (Yang Tse) -- Modified buildconf so that when automake runs it copies missing files - instead of symlinking them. - -* June 8 2009 (Yang Tse) -- Removed buildconf.bat from release and daily snapshot archives. This - file is only for CVS tree checkout builds. - -* May 26 2009 (Yang Tse) -- Added --enable-curldebug configure option to enable and disable building - with the low-level curl debug memory tracking 'feature' to allow decoupled - setting from --enable-debug, allowing again to build c-ares independently - out of the CVS tree. - - For the c-ares library option --enable-debug enables debug build features - which are _not_ related with memory tracking. For the c-ares library when - --enable-debug is given it does not enable the memory tracking feature. If - you wish to enable the curl debug memory tracking you must use configure - option --enable-curldebug explicitily to do so. - - Internally, definition of preprocessor symbol DEBUGBUILD restricts code - which is only compiled for debug enabled builds. And symbol CURLDEBUG is - used to differentiate code which is _only_ used for memory tracking. - - Make ares_init(), ares_dup() and ares_init_options() fail returning - ARES_ENOTINITIALIZED if library initialization has not been performed - calling ares_library_init(). - -* May 20 2009 (Yang Tse) -- Added ares_library_init() and ares_library_cleanup() man pages. - -* May 19 2009 (Yang Tse) -- Introduced ares_library_init() and ares_library_cleanup() functions. - - This is an API and ABI break for Win32/64 systems. Non-Win32/64 build targets - using c-ares 1.7.0 can still survive without calling these functions. Read all - the details on ares_library_init(3) and ares_library_cleanup(3) man pages that - are included. - - curl/libcurl 7.19.5 is fully compatible with c-ares 1.7.0 on all systems. - - In order to use c-ares 1.7.0 with curl/libcurl on Win32/64 systems it is - required that curl/libcurl is 7.19.5 or newer. In other words, it is not - possible on Win32/64 to use c-ares 1.7.0 with a curl/libcurl version less - than 7.19.5 - -* May 11 2009 (Daniel Stenberg) -- Gregor Jasny made c-ares link with libtool 's -export-symbols-regex option to - only expose functions starting with ares_. - -* May 7 2009 (Yang Tse) -- Fix an m4 overquoting triggering a spurious 'AS_TR_CPP' symbol definition - attempt in generated config.h - -* May 2 2009 (Yang Tse) -- Use a build-time configured ares_socklen_t data type instead of socklen_t. - -* April 21 2009 (Yang Tse) -- Moved potential inclusion of system's malloc.h and memory.h header files to - setup_once.h. Inclusion of each header file is based on the definition of - NEED_MALLOC_H and NEED_MEMORY_H respectively. - -* March 11 2009 (Yang Tse) -- Japheth Cleaver fixed acountry.c replacing u_long with unsigned long. - -* February 20 2009 (Yang Tse) -- Do not halt compilation when using VS2008 to build a Windows 2000 target. - -* February 3 2009 (Phil Blundell) -- If the server returns garbage or nothing at all in response to an AAAA query, - go on and ask for A records anyway. - -* January 31 2009 (Daniel Stenberg) -- ares_gethostbyname() now accepts 'AF_UNSPEC' as a family for resolving - either AF_INET6 or AF_INET. It works by accepting any of the looksups in the - hosts file, and it resolves the AAAA field with a fallback to A. - -* January 14 2009 (Daniel Stenberg) -- ares.h no longer uses the HAVE_STRUCT_IN6_ADDR define check, but instead it - now declares the private struct ares_in6_addr for all systems instead of - relying on one possibly not present in the system. - -* January 13 2009 (Phil Blundell) -- ares__send_query() now varies the retry timeout pseudo-randomly to avoid - packet storms when several queries were started at the same time. - -* January 11 2009 (Daniel Stenberg) -- Phil Blundell added the internal function ares__expand_name_for_response() - that is now used by the ares_parse_*_reply() functions instead of the - ares_expand_name() simply to easier return ARES_EBADRESP for the cases where - the name expansion fails as in responses that really isn't expected. - -Version 1.6.0 (Dec 9, 2008) - -* December 9 2008 (Gisle Vanem) - - Fixes for Win32 targets using the Watt-32 tcp/ip stack. - -* Dec 4 2008 (Daniel Stenberg) - - Gregor Jasny provided the patch that introduces ares_set_socket_callback(), - and I edited it to also get duped by ares_dup(). - -* Dec 3 2008 (Daniel Stenberg) - - API changes: - - I made sure the public ares_config struct looks like before and yet it - supports the ROTATE option thanks to c-ares now storing the "optmask" - internally. Thus we should be ABI compatible with the past release(s) - now. My efforts mentioned below should not break backwards ABI compliance. - - Here's how I suggest we proceed with the API: - - ares_init() will be primary "channel creator" function. - - ares_init_options() will continue to work exactly like now and before. For - starters, it will be the (only) way to set the existing options. - - ares_save_options() will continue to work like today, but will ONLY save - options that you can set today (including ARES_OPT_ROTATE actually) but new - options that we add may not be saved with this. - - Instead we introduce: - - ares_dup() that instead can make a new channel and clone the config used - from an existing channel. It will then clone all config options, including - future new things we add. - - ares_set_*() style functions that set (new) config options. As a start we - simply add these for new functionality, but over time we can also introduce - them for existing "struct ares_options" so that we can eventually deprecate - the two ares_*_options() functions. - - ares_get_*() style functions for extracting info from a channel handle that - should be used instead of ares_save_options(). - -* Nov 26 2008 (Yang Tse) -- Brad Spencer provided changes to allow buildconf to work on OS X. - -- Gerald Combs fixed a bug in ares_parse_ptr_reply() which would cause a - buffer to shrink instead of expand if a reply contained 8 or more records. - -* Nov 25 2008 (Yang Tse) -- In preparation for the upcomming IPv6 nameservers patch, the internal - ares_addr union is now changed into an internal struct which also holds - the address family. - -* Nov 19 2008 (Daniel Stenberg) -- Brad Spencer brought the new function ares_gethostbyname_file() which simply - resolves a host name from the given file, using the regular hosts syntax. - -* Nov 1 2008 (Daniel Stenberg) -- Carlo Contavalli added support for the glibc "rotate" option, as documented - in man resolv.conf: - - causes round robin selection of nameservers from among those listed. This - has the effect of spreading the query load among all listed servers, rather - than having all clients try the first listed server first every time. - - You can enable it with ARES_OPT_ROTATE - -* Oct 21 2008 (Yang Tse) - Charles Hardin added handling of EINPROGRESS for UDP connects. - -* Oct 18 2008 (Daniel Stenberg) - Charles Hardin made adig support a regular numerical dotted IP address for the - -s option as well. - -* Oct 7 2008 (Yang Tse) -- Added --enable-optimize configure option to enable and disable compiler - optimizations to allow decoupled setting from --enable-debug. - -* Oct 2 2008 (Yang Tse) -- Added --enable-warnings configure option to enable and disable strict - compiler warnings to allow decoupled setting from --enable-debug. - -* Sep 17 2008 (Yang Tse) -- Code reorganization to allow internal/private use of "nameser.h" to any - system that lacks arpa/nameser.h or arpa/nameser_compat.h header files. - -* Sep 16 2008 (Yang Tse) -- Code reorganization to allow internal/private use of ares_writev to any - system that lacks the writev function. - -* Sep 15 2008 (Yang Tse) -- Code reorganization to allow internal/private use of ares_strcasecmp to any - system that lacks the strcasecmp function. - -- Improve configure detection of some string functions. - -* Sep 11 2008 (Yang Tse) -- Code reorganization to allow internal/private use of ares_strdup to any - system that lacks the strdup function. - -Version 1.5.3 (Aug 29, 2008) - -* Aug 25 2008 (Yang Tse) -- Improvement by Brad House: - - This patch addresses an issue in which a response could be sent back to the - source port of a client from a different address than the request was made to. - This is one form of a DNS cache poisoning attack. - - The patch simply uses recvfrom() rather than recv() and validates that the - address returned from recvfrom() matches the address of the server we have - connected to. Only necessary on UDP sockets as they are connection-less, TCP - is unaffected. - -- Fix by George Neill: - Fixed compilation of acountry sample application failure on some systems. - -* Aug 4 2008 (Daniel Stenberg) -- Fix by Tofu Linden: - - The symptom: - * Users (usually, but not always) on 2-Wire routers and the Comcast service - and a wired connection to their router would find that the second and - subsequent DNS lookups from fresh processes using c-ares to resolve the same - address would cause the process to never see a reply (it keeps polling for - around 1m15s before giving up). - - The repro: - * On such a machine (and yeah, it took us a lot of QA to find the systems - that reproduce such a specific problem!), do 'ahost www.secondlife.com', - then do it again. The first process's lookup will work, subsequent lookups - will time-out and fail. - - The cause: - * init_id_key() was calling randomize_key() *before* it initialized - key->state, meaning that the randomness generated by randomize_key() is - immediately overwritten with deterministic values. (/dev/urandom was also - being read incorrectly in the c-ares version we were using, but this was - fixed in a later version.) - * This makes the stream of generated query-IDs from any new c-ares process - be an identical and predictable sequence of IDs. - * This makes the 2-Wire's default built-in DNS server detect these queries - as probable-duplicates and (erroneously) not respond at all. - - -* Aug 4 2008 (Yang Tse) -- Autoconf 2.62 has changed the behaviour of the AC_AIX macro which we use. - Prior versions of autoconf defined _ALL_SOURCE if _AIX was defined. 2.62 - version of AC_AIX defines _ALL_SOURCE and other four preprocessor symbols - no matter if the system is AIX or not. To keep the traditional behaviour, - and an uniform one across autoconf versions AC_AIX is replaced with our - own internal macro CARES_CHECK_AIX_ALL_SOURCE. - -* Aug 1 2008 (Yang Tse) -- Configure process now checks if the preprocessor _REENTRANT symbol is already - defined. If it isn't currently defined a set of checks are performed to test - if its definition is required to make visible to the compiler a set of *_r - functions. Finally, if _REENTRANT is already defined or needed it takes care - of making adjustments necessary to ensure that it is defined equally for the - configure process tests and generated config file. - -* Jul 20 2008 (Yang Tse) -- When recvfrom prototype uses a void pointer for arguments 2, 5 or 6 this will - now cause the definition, as appropriate, of RECVFROM_TYPE_ARG2_IS_VOID, - RECVFROM_TYPE_ARG5_IS_VOID or RECVFROM_TYPE_ARG6_IS_VOID. - -* Jul 17 2008 (Yang Tse) -- RECVFROM_TYPE_ARG2, RECVFROM_TYPE_ARG5 and RECVFROM_TYPE_ARG6 are now defined - to the data type pointed by its respective argument and not the pointer type. - -* Jul 16 2008 (Yang Tse) -- Improved configure detection of number of arguments for getservbyport_r. - Detection is now based on compilation checks instead of linker ones. - -- Configure process now checks availability of recvfrom() socket function and - finds out its return type and the types of its arguments. Added definitions - for non-configure systems config files, and introduced macro sreadfrom which - will be used on udp sockets as a recvfrom() wrapper in the future. - -* Jul 15 2008 (Yang Tse) -- Introduce definition of _REENTRANT symbol in setup.h to improve library - usability. Previously the configure process only used the AC_SYS_LARGEFILE - macro for debug builds, now it is also used for non-debug ones enabling the - use of configure options --enable-largefile and --disable-largefile which - might be needed for library compatibility. Remove checking the size of - curl_off_t, it is no longer needed. - -* Jul 3 2008 (Daniel Stenberg) -- Phil Blundell: If you ask ares_gethostbyname() to do an AF_INET6 lookup and - the target host has only A records, it automatically falls back to an - AF_INET lookup and gives you the A results. However, if the target host has - a CNAME record, this behaviour is defeated since the original query does - return some data even though ares_parse_aaa_reply() doesn't consider it - relevant. Here's a small patch to make it behave the same with and without - the CNAME. - -* Jul 2 2008 (Yang Tse) -- Fallback to gettimeofday when monotonic clock is unavailable at run-time. - -* Jun 30 2008 (Daniel Stenberg) - -- As was pointed out to me by Andreas Schuldei, the MAXHOSTNAMELEN define is - not posix or anything and thus c-ares failed to build on hurd (and possibly - elsewhere). The define was also somewhat artificially used in the windows - port. Now, I instead rewrote the use of gethostbyname to enlarge the host - name buffer in case of need and totally avoid the use of the MAXHOSTNAMELEN - define. I thus also removed the defien from the namser.h file where it was - once added for the windows build. - - I also fixed init_by_defaults() function to not leak memory in case if - error. - -* Jun 9 2008 (Yang Tse) - -- Make libcares.pc generated file for pkg-config include information relative - to the libraries needed for the static linking of c-ares. - -* May 30 2008 (Yang Tse) - -- Brad House fixed a missing header file inclusion in adig sample program. - -Version 1.5.2 (May 29, 2008) - -* May 13 2008 (Daniel Stenberg) - -- Introducing millisecond resolution support for the timeout option. See - ares_init_options()'s ARES_OPT_TIMEOUTMS. - -* May 9 2008 (Yang Tse) - -- Use monotonic time source if available, for private function ares__tvnow() - -* May 7 2008 (Daniel Stenberg) - -- Sebastian made c-ares able to return all PTR-records when doing reverse - lookups. It is not common practice to have multiple PTR-Records for a single - IP, but its perfectly legal and some sites have those. - -- Doug Goldstein provided a configure patch: updates autoconf 2.13 usage to - autoconf 2.57 usage (which is the version you have specified as the minimum - version). It's a minor change but it does clean up some warnings with newer - autoconf (specifically 2.62). - -* May 5 2008 (Yang Tse) - -- Improved parsing of resolver configuration files. - -* April 4 2008 (Daniel Stenberg) - -- Eino Tuominen improved the code when a file is used to seed the randomizer. - -- Alexey Simak made adig support NAPTR records - -- Alexey Simak fixed the VC dsp file by adding the missing source file - ares_expand_string.c - -* December 11 2007 (Gisle Vanem) - -- Added another sample application; acountry.c which converts an - IPv4-address(es) and/or host-name(s) to country-name and country-code. - This uses the service of the DNSBL at countries.nerd.dk. - -* December 3 2007 (Daniel Stenberg) - -- Brad Spencer fixed the configure script to assume that there's no - /dev/urandom when built cross-compiled as then the script cannot check for - it. - -- Erik Kline cleaned up ares_gethostbyaddr.c:next_lookup() somewhat - -Version 1.5.1 (Nov 21, 2007) - -* November 21 2007 (Daniel Stenberg) - -- Robin Cornelius pointed out that ares_llist.h was missing in the release - archive for 1.5.0 - -Version 1.5.0 (Nov 21, 2007) - -* October 2 2007 (Daniel Stenberg) - -- ares_strerror() segfaulted if the input error number was out of the currently - supported range. - -- Yang Tse: Avoid a segfault when generating a DNS "Transaction ID" in - internal function init_id_key() under low memory conditions. - -* September 28 2007 (Daniel Stenberg) - -- Bumped version to 1.5.0 for next release and soname bumped to 2 due to ABI - and API changes in the progress callback (and possibly more coming up from - Steinar) - -* September 28 2007 (Steinar H. Gunderson) - -- Don't skip a server if it's the only one. (Bugfix from the Google tree.) - -- Made the query callbacks receive the number of timeouts that happened during - the execution of a query, and updated documentation accordingly. (Patch from - the Google tree.) - -- Support a few more socket options: ARES_OPT_SOCK_SNDBUF and - ARES_OPT_SOCK_RCVBUF - -- Always register for TCP events even if there are no outstanding queries, as - the other side could always close the connection, which is a valid event - which should be responded to. - -* September 22 2007 (Daniel Stenberg) - -- Steinar H. Gunderson fixed: Correctly clear sockets from the fd_set on in - several functions (write_tcp_data, read_tcp_data, read_udp_packets) so that - if it fails and the socket is closed the following code doesn't try to use - the file descriptor. - -- Steinar H. Gunderson modified c-ares to now also do to DNS retries even when - TCP is used since there are several edge cases where it still makes sense. - -- Brad House provided a fix for ares_save_options(): - - Apparently I overlooked something with the ares_save_options() where it - would try to do a malloc(0) when no options of that type needed to be saved. - On most platforms, this was fine because malloc(0) doesn't actually return - NULL, but on AIX it does, so ares_save_options would return ARES_ENOMEM. - -* July 14 2007 (Daniel Stenberg) - -- Vlad Dinulescu fixed two outstanding valgrind reports: - - 1. In ares_query.c , in find_query_by_id we compare q->qid (which is a short - int variable) with qid, which is declared as an int variable. Moreover, - DNS_HEADER_SET_QID is used to set the value of qid, but DNS_HEADER_SET_QID - sets only the first two bytes of qid. I think that qid should be declared as - "unsigned short" in this function. - - 2. The same problem occurs in ares_process.c, process_answer() . query->qid - (an unsigned short integer variable) is compared with id, which is an - integer variable. Moreover, id is initialized from DNS_HEADER_QID which sets - only the first two bytes of id. I think that the id variable should be - declared as "unsigned short" in this function. - - Even after declaring these variables as "unsigned short", the valgrind - errors are still there. Which brings us to the third problem. - - 3. The third problem is that Valgrind assumes that query->qid is not - initialised correctly. And it does that because query->qid is set from - DNS_HEADER_QID(qbuf); Valgrind says that qbuf has unitialised bytes. And - qbuf has uninitialised bytes because of channel->next_id . And next_id is - set by ares_init.c:ares__generate_new_id() . I found that putting short r=0 - in this function (instead of short r) makes all Valgrind warnings go away. - I have studied ares__rc4() too, and this is the offending line: - - buffer_ptr[counter] ^= state[xorIndex]; (ares_query.c:62) - - This is what triggers Valgrind.. buffer_ptr is unitialised in this function, - and by applying ^= on it, it remains unitialised. - -Version 1.4.0 (June 8, 2007) - -* June 4 2007 (Daniel Stenberg) - -- James Bursa reported a major memory problem when resolving multi-IP names - and I found and fixed the problem. It was added by Ashish Sharma's patch - two days ago. - - When I then tried to verify multiple entries in /etc/hosts after my fix, I - got another segfault and decided this code was not ripe for inclusion and I - reverted the patch. - -* June 2 2007 - -- Brad Spencer found and fixed three flaws in the code, found with the new - gcc 4.2.0 warning: -Waddress - -- Brad House fixed VS2005 compiler warnings due to time_t being 64bit. - He also made recent Microsoft compilers use _strdup() instead of strdup(). - -- Brad House's man pages for ares_save_options() and ares_destroy_options() - were added. - -- Ashish Sharma provided a patch for supporting multiple entries in the - /etc/hosts file. Patch edited for coding style and functionality by me - (Daniel). - -* May 30 2007 - -- Shmulik Regev brought cryptographically secure transaction IDs: - - The c-ares library implementation uses a DNS "Transaction ID" field that is - seeded with a pseudo random number (based on gettimeofday) which is - incremented (++) between consecutive calls and is therefore rather - predictable. In general, predictability of DNS Transaction ID is a well - known security problem (e.g. - http://bak.spc.org/dms/archive/dns_id_attack.txt) and makes a c-ares based - implementation vulnerable to DNS poisoning. Credit goes to Amit Klein - (Trusteer) for identifying this problem. - - The patch I wrote changes the implementation to use a more secure way of - generating unique IDs. It starts by obtaining a key with reasonable entropy - which is used with an RC4 stream to generate the cryptographically secure - transaction IDs. - - Note that the key generation code (in ares_init:randomize_key) has two - versions, the Windows specific one uses a cryptographically safe function - provided (but undocumented :) by the operating system (described at - http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx). The - default implementation is a bit naive and uses the standard 'rand' - function. Surely a better way to generate random keys exists for other - platforms. - - The patch can be tested by using the adig utility and using the '-s' option. - -- Brad House added ares_save_options() and ares_destroy_options() that can be - used to keep options for later re-usal when ares_init_options() is used. - - Problem: Calling ares_init() for each lookup can be unnecessarily resource - intensive. On windows, it must LoadLibrary() or search the registry - on each call to ares_init(). On unix, it must read and parse - multiple files to obtain the necessary configuration information. In - a single-threaded environment, it would make sense to only - ares_init() once, but in a heavily multi-threaded environment, it is - undesirable to ares_init() and ares_destroy() for each thread created - and track that. - - Solution: Create ares_save_options() and ares_destroy_options() functions to - retrieve and free options obtained from an initialized channel. The - options populated can be used to pass back into ares_init_options(), - it should populate all needed fields and not retrieve any information - from the system. Probably wise to destroy the cache every minute or - so to prevent the data from becoming stale. - -- Daniel S added ares_process_fd() to allow applications to ask for processing - on specific sockets and thus avoiding select() and associated - functions/macros. This function will be used by upcoming libcurl releases - for this very reason. It also made me export the ares_socket_t type in the - public ares.h header file, since ares_process_fd() uses that type for two of - the arguments. - -* May 25 2007 - -- Ravi Pratap fixed a flaw in the init_by_resolv_conf() function for windows - that could cause it to return a bad return code. - -* April 16 2007 - -- Yang Tse: Provide ares_getopt() command-line parser function as a source - code helper function, not belonging to the actual c-ares library. - -* February 19 2007 - -- Vlad Dinulescu added ares_parse_ns_reply(). - -* February 13 2007 - -- Yang Tse: Fix failure to get the search sequence of /etc/hosts and - DNS from /etc/nsswitch.conf, /etc/host.conf or /etc/svc.conf when - /etc/resolv.conf did not exist or was unable to read it. - -* November 22 2006 - -- Install ares_dns.h too - -- Michael Wallner fixed this problem: When I set domains in the options - struct, and there are domain/search entries in /etc/resolv.conf, the domains - of the options struct will be overridden. - -* November 6 2006 - -- Yang Tse removed a couple of potential zero size memory allocations. - -- Andreas Rieke fixed the line endings in the areslib.dsp file that I (Daniel) - broke in the 1.3.2 release. We should switch to a system where that file is - auto-generated. We could rip some code for that from curl... - -Version 1.3.2 (November 3, 2006) - -* October 12 2006 - -- Prevent ares_getsock() to overflow if more than 16 sockets are used. - -* September 11 2006 - -- Guilherme Balena Versiani: I noted a strange BUG in Win32 port - (ares_init.c/get_iphlpapi_dns_info() function): when I disable the network - by hand or disconnect the network cable in Windows 2000 or Windows XP, my - application gets 127.0.0.1 as the only name server. The problem comes from - 'GetNetworkParams' function, that returns the empty string "" as the only - name server in that case. Moreover, the Windows implementation of - inet_addr() returns INADDR_LOOPBACK instead of INADDR_NONE. - -* August 29 2006 - -- Brad Spencer did - - o made ares_version.h use extern "C" for c++ compilers - o fixed compiler warnings in ares_getnameinfo.c - o fixed a buffer position init for TCP reads - -* August 3 2006 - -- Ravi Pratap fixed ares_getsock() to actually return the proper bitmap and - not always zero! - -Version 1.3.1 (June 24, 2006) - -* July 23, 2006 - -- Gisle Vanem added getopt() to the ahost program. Currently accepts - only [-t {a|aaaa}] to specify address family in ares_gethostbyname(). - -* June 19, 2006 - -- (wahern) Removed "big endian" DNS section and RR data integer parser - macros from ares_dns.h, which break c-ares on my Sparc64. Bit-wise - operations in C operate on logical values. And in any event the octets are - already in big-endian (aka network) byte order so they're being reversed - (thus the source of the breakage). - -* June 18, 2006 - -- William Ahern handles EAGAIN/EWOULDBLOCK errors in most of the I/O calls - from area_process.c. - - TODO: Handle one last EAGAIN for a UDP socket send(2) in - ares__send_query(). - -* May 10, 2006 - -- Bram Matthys brought my attention to a libtool peculiarity where detecting - things such as C++ compiler actually is a bad thing and since we don't need - that detection I added a work-around, much inspired by a previous patch by - Paolo Bonzini. This also shortens the configure script quite a lot. - -* May 3, 2006 - -- Nick Mathewson added the ARES_OPT_SOCK_STATE_CB option that when set makes - c-ares call a callback on socket state changes. A better way than the - ares_getsock() to get full control over the socket state. - -* January 9, 2006 - -- Alexander Lazic improved the getservbyport_r() configure check. - -* January 6, 2006 - -- Alexander Lazic pointed out that the buildconf should use the ACLOCAL_FLAGS - variable for easier controlling what it does and how it runs. - -* January 5, 2006 - -- James Bursa fixed c-ares to find the hosts file on RISC OS, and made it - build with newer gcc versions that no longer defines "riscos". - -* December 22 - -- Daniel Stenberg added ares_getsock() that extracts the set of sockets to - wait for action on. Similar to ares_fds() but not restricted to using - select() for the waiting. - -* November 25 - -- Yang Tse fixed some send() / recv() compiler warnings - -* September 18 - -- Added constants that will be used by ares_getaddrinfo - -- Made ares_getnameinfo use the reentrant getservbyport (getservbyport_r) if it - is available to ensure it works properly in a threaded environment. - -* September 10 - -- configure fix for detecting a member in the sockaddr_in6 struct which failed - on ipv6-enabled HP-UX 11.00 - -Version 1.3.0 (August 29, 2005) - -* August 21 - -- Alfredo Tupone provided a fix for the Windows code in get_iphlpapi_dns_info() - when getting the DNS server etc. - -* June 19 - -- Added some checks for the addrinfo structure. - -* June 2 - -- William Ahern: - - Make UDP sockets non-blocking. I've confirmed that at least on Linux 2.4 a - read event can come back from poll() on a valid SOCK_DGRAM socket but - recv(2) will still block. This patch doesn't ignore EAGAIN in - read_udp_packets(), though maybe it should. (This patch was edited by Daniel - Stenberg and a new configure test was added (imported from curl's configure) - to properly detect what non-blocking socket approach to use.) - - I'm not quite sure how this was happening, but I've been seeing PTR queries - which seem to return empty responses. At least, they were empty when calling - ares_expand_name() on the record. Here's a patch which guarantees to - NUL-terminate the expanded name. The old behavior failed to NUL-terminate if - len was 0, and this was causing strlen() to run past the end of the buffer - after calling ares_expand_name() and getting ARES_SUCCESS as the return - value. If q is not greater than *s then it's equal and *s is always - allocated with at least one byte. - -* May 16 - -- Added ares_getnameinfo which mimics the getnameinfo API (another feature - that could use testing). - -* May 14 - -- Added an inet_ntop function from BIND for systems that do not have it. - -* April 9 - -- Made sortlist support IPv6 (this can probably use some testing). - -- Made sortlist support CIDR matching for IPv4. - -* April 8 - -- Added preliminary IPv6 support to ares_gethostbyname. Currently, sortlist - does not work with IPv6. Also provided an implementation of bitncmp from - BIND for systems that do not supply this function. This will be used to add - IPv6 support to sortlist. - -- Made ares_gethostbyaddr support IPv6 by specifying AF_INET6 as the family. - The function can lookup IPv6 addresses both from files (/etc/hosts) and - DNS lookups. - -* April 7 - -- Tupone Alfredo fixed includes of arpa/nameser_compat.h to build fine on Mac - OS X. - -* April 5 - -- Dominick Meglio: Provided implementations of inet_net_pton and inet_pton - from BIND for systems that do not include these functions. - -* March 11, 2005 - -- Dominick Meglio added ares_parse_aaaa_reply.c and did various - adjustments. The first little steps towards IPv6 support! - -* November 7 - -- Fixed the VC project and makefile to use ares_cancel and ares_version - -* October 24 - -- The released ares_version.h from 1.2.1 says 1.2.0 due to a maketgz flaw. - This is now fixed. - -Version 1.2.1 (October 20, 2004) - -* September 29 - -- Henrik Stoerner fix: got a report that Tru64 Unix (the unix from Digital - when they made Alpha's) uses /etc/svc.conf for the purpose fixed below for - other OSes. He made c-ares check for and understand it if present. - -- Now c-ares will use local host name lookup _before_ DNS resolving by default - if nothing else is told. - -* September 26 - -- Henrik Stoerner: found out that c-ares does not look at the /etc/host.conf - file to determine the sequence in which to search /etc/hosts and DNS. So on - systems where this order is defined by /etc/host.conf instead of a "lookup" - entry in /etc/resolv.conf, c-ares will always default to looking in DNS - first, and /etc/hosts second. - - c-ares now looks at - - 1) resolv.conf (for the "lookup" line); - 2) nsswitch.fon (for the "hosts:" line); - 3) host.conf (for the "order" line). - - First match wins. - -- Dominick Meglio patched: C-ares on Windows assumed that the HOSTS file is - located in a static location. It assumed - C:\Windows\System32\Drivers\Etc. This is a poor assumption to make. In fact, - the location of the HOSTS file can be changed via a registry setting. - - There is a key called DatabasePath which specifies the path to the HOSTS - file: - http://www.microsoft.com/technet/itsolutions/network/deploy/depovg/tcpip2k.mspx - - The patch will make c-ares correctly consult the registry for the location - of this file. - -* August 29 - -- Gisle Vanem fixed the MSVC build files. - -* August 20 - -- Gisle Vanem made c-ares build and work with his Watt-32 TCP/IP stack. - -* August 13 - -- Harshal Pradhan made a minor syntax change in ares_init.c to make it build - fine with MSVC 7.1 - -* July 24 - -- Made the lib get built static only if --enable-debug is used. - -- Gisle Vanem fixed: - - Basically in loops like handle_errors(), 'query->next' was assigned a local - variable and then query was referenced after the memory was freed by - next_server(). I've changed that so next_server() and end_query() returns - the next query. So callers should use this ret-value. - - The next problem was that 'server->tcp_buffer_pos' had a random value at - entry to 1st recv() (luckily causing Winsock to return ENOBUFS). - - I've also added a ares_writev() for Windows to streamline the code a bit - more. - -* July 20 -- Fixed a few variable return types for some system calls. Made configure - check for ssize_t to make it possible to use that when receiving the send() - error code. This is necessary to prevent compiler warnings on some systems. - -- Made configure create config.h, and all source files now include setup.h that - might include the proper config.h (or a handicrafted alternative). - -- Switched to 'ares_socket_t' type for sockets in ares, since Windows don't - use 'int' for that. - -- automake-ified and libool-ified c-ares. Now it builds libcares as a shared - lib on most platforms if wanted. (This bloated the size of the release - archive with another 200K!) - -- Makefile.am now uses Makefile.inc for the c sources, h headers and man - pages, to make it easier for other makefiles to use the exact same set of - files. - -- Adjusted 'maketgz' to use the new automake magic when building distribution - archives. - -- Anyone desires HTML and/or PDF versions of the man pages in the release - archives? - -* July 3 -- Günter Knauf made c-ares build and run on Novell Netware. - -* July 1 -- Gisle Vanem provided Makefile.dj to build with djgpp, added a few more djgpp - fixes and made ares not use 'errno' to provide further info on Windows. - -* June 30 -- Gisle Vanem made it build with djgpp and run fine with the Watt-32 stack. - -* June 10 -- Gisle Vanem's init patch for Windows: - - The init_by_resolv_conf() function fetches the DNS-server(s) - from a series of registry branches. - - This can be wrong in the case where DHCP has assigned nameservers, but the - user has overridden these servers with other prefered settings. Then it's - wrong to use the DHCPNAMESERVER setting in registry. - - In the case of no global DHCP-assigned or fixed servers, but DNS server(s) - per adapter, one has to query the adapter branches. But how can c-ares know - which adapter is valid for use? AFAICS it can't. There could be one adapter - that is down (e.g. a VPN adapter). - - So it's better to leave this to the IP Helper API (iphlapi) available in - Win-98/2000 and later. My patch falls-back to the old way if not available. - -* June 8 -- James Bursa fixed an init issue for RISC OS. - -* May 11 -- Nico Stappenbelt reported that when processing domain and search lines in - the resolv.conf file, the first entry encountered is processed and used as - the search list. According to the manual pages for both Linux, Solaris and - Tru64, the last entry of either a domain or a search field is used. - - This is now adjusted in the code - -Version 1.2.0 (April 13, 2004) - -* April 2, 2004 -- Updated various man pages to look nicer when converted to HTML on the web - site. - -* April 1, 2004 -- Dirk Manske provided a new function that is now named ares_cancel(). It is - used to cancel/cleanup a resolve/request made using ares functions on the - given ares channel. It does not destroy/kill the ares channel itself. - -- Dominick Meglio cleaned up the formatting in several man pages. - -* March 30, 2004 -- Dominick Meglio's new ares_expand_string. A helper function when decoding - incoming DNS packages. - -- Daniel Stenberg modified the Makefile.in to use a for loop for the man page - installation to improve overview and make it easier to add man pages. - -Version 1.1.0 (March 11, 2004) - -* March 9, 2004 -- Gisle Vanem improved build on Windows. - -* February 25, 2004 -- Dan Fandrich found a flaw in the Feb 22 fix. - -- Added better configure --enable-debug logic (taken from the curl configure - script). Added acinclude.m4 to the tarball. - -* February 23, 2004 -- Removed ares_free_errmem(), the function, the file and the man page. It was - not used and it did nothing. - -- Fixed a lot of code that wasn't "64bit clean" and thus caused a lot of - compiler warnings on picky compilers. - -* February 22, 2004 -- Dominick Meglio made ares init support multiple name servers in the - NameServer key on Windows. - -* February 16, 2004 -- Modified ares_private.h to include libcurl's memory debug header if - CURLDEBUG is set. This makes all the ares-functions supervised properly by - the curl test suite. This also forced me to add inclusion of the - ares_private.h header in a few more files that are using some kind of - memory-related resources. - -- Made the makefile only build ahost and adig if 'make demos' is used. - -* February 10, 2004 -- Dirk Manske made ares_version.h installed with 'make install' - -* February 4, 2004 -- ares_free_errmem() is subject for removal, it is simply present for future - purposes, and since we removed the extra parameter in strerror() it won't - be used by c-ares! -- configure --enable-debug now enables picky compiler options if gcc is used -- fixed several compiler warnings --enable-debug showed and Joerg Mueller-Tolk - reported - -Version 1.0.0 (February 3, 2004) - -* February 3, 2004 -- now we produce the libcares.a library instead of the previous libares.a - since we are no longer compatible - -* February 2, 2004 - -- ares_strerror() has one argument less. This is the first official - modification of the existing provided ares API. - -* January 29, 2004 - -- Dirk Manske fixed how the socket is set non-blocking. - -* January 4, 2004 - -- Dominick Meglio made the private gettimeofday() become ares_gettimeofday() - instead in order to not pollute the name space and risk colliding with - other libraries' versions of this function. - -* October 24, 2003. Daniel Stenberg - - Added ares_version(). - -Version 1.0-pre1 (8 October 2003) - -- James Bursa made it run on RISC OS - -- Dominick Meglio made it run fine on NT4 - -- Duncan Wilcox made it work fine on Mac OS X - -- Daniel Stenberg adjusted the windows port - -- liren at vivisimo.com made the initial windows port - -* Imported the sources from ares 1.1.1 diff --git a/deps/uv/c-ares/CMakeLists.txt b/deps/uv/c-ares/CMakeLists.txt deleted file mode 100644 index 7bbb95b879..0000000000 --- a/deps/uv/c-ares/CMakeLists.txt +++ /dev/null @@ -1,22 +0,0 @@ -include_directories(${CMAKE_CURRENT_SOURCE_DIR}) -include_directories(${node_platform}-${cares_arch}) -add_definitions(-DHAVE_CONFIG_H=1) - -include(CheckLibraryExists) -check_library_exists(socket socket "" HAVE_SOCKET_LIB) -check_library_exists(nsl gethostbyname "" HAVE_NSL_LIB) - -file(GLOB lib_sources *.c) -add_library(cares ${lib_sources}) - -if(${HAVE_SOCKET_LIB}) - set(cares_libs ${cares_libs} socket) -endif() - -if(${HAVE_NSL_LIB}) - set(cares_libs ${cares_libs} nsl) -endif() - -if(cares_libs) - target_link_libraries(cares ${cares_libs}) -endif() diff --git a/deps/uv/c-ares/NEWS b/deps/uv/c-ares/NEWS deleted file mode 100644 index 95a2eeea27..0000000000 --- a/deps/uv/c-ares/NEWS +++ /dev/null @@ -1,21 +0,0 @@ -Major changes since: -* see the CHANGES file - -Major changes in release 1.1.1: -* ares should now compile as C++ code (no longer uses reserved word - "class"). -* Added SRV support to adig test program. -* Fixed a few error handling bugs in query processing. - -Major changes in release 1.1.0: -* Added ares_free_string() function so that memory can be freed in the - same layer as it is allocated, a desirable feature in some - environments. -* A few of the ares_dns.h macros are fixed to use the proper bitwise - operator. -* Fixed a couple of fenceposts fixed in ares_expand_name()'s - bounds-checking. -* In process_timeouts(), extract query->next before calling - next_server() and possibly freeing the query structure. -* Casted arguments to ctype macros casted to unsigned char, since not - all char values are valid inputs to those macros according to ANSI. diff --git a/deps/uv/c-ares/README b/deps/uv/c-ares/README deleted file mode 100644 index 56a43c53a7..0000000000 --- a/deps/uv/c-ares/README +++ /dev/null @@ -1,60 +0,0 @@ -c-ares -====== - -This is c-ares, an asynchronous resolver library. It is intended for -applications which need to perform DNS queries without blocking, or need to -perform multiple DNS queries in parallel. The primary examples of such -applications are servers which communicate with multiple clients and programs -with graphical user interfaces. - -The full source code is available in the 'c-ares' release archives, and in a -git repository: http://github.com/bagder/c-ares - -If you find bugs, correct flaws, have questions or have comments in general in -regard to c-ares (or by all means the original ares too), get in touch with us -on the c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares - -c-ares is of course distributed under the same MIT-style license as the -original ares. - -You'll find all c-ares details and news here: - - http://c-ares.haxx.se/ - - -NOTES FOR C-ARES HACKERS - -The following notes apply to c-ares version 1.7.0 and later. - -* The distributed ares_build.h file is only intended to be used on systems - which can not run the also distributed configure script. - -* The distributed ares_build.h file is generated as a copy of ares_build.h.dist - when the c-ares source code distribution archive file is originally created. - -* If you check out from git on a non-configure platform, you must run the - appropriate buildconf* script to set up ares_build.h and other local files - before being able of compiling the library. - -* On systems capable of running the configure script, the configure process - will overwrite the distributed ares_build.h file with one that is suitable - and specific to the library being configured and built, this new file is - generated from the ares_build.h.in template file. - -* If you intend to distribute an already compiled c-ares library you _MUST_ - also distribute along with it the generated ares_build.h which has been - used to compile it. Otherwise the library will be of no use for the users of - the library that you have built. It is _your_ responsibility to provide this - file. No one at the c-ares project can know how you have built the library. - -* File ares_build.h includes platform and configuration dependent info, - and must not be modified by anyone. Configure script generates it for you. - -* We cannot assume anything else but very basic compiler features being - present. While c-ares requires an ANSI C compiler to build, some of the - earlier ANSI compilers clearly can't deal with some preprocessor operators. - -* Newlines must remain unix-style for older compilers' sake. - -* Comments must be written in the old-style /* unnested C-fashion */ - diff --git a/deps/uv/c-ares/README.cares b/deps/uv/c-ares/README.cares deleted file mode 100644 index aca54c8cd1..0000000000 --- a/deps/uv/c-ares/README.cares +++ /dev/null @@ -1,13 +0,0 @@ -c-ares -====== - -This package is based on ares 1.1.1 (written by Greg Hudson). I decided to -fork and release a separate project since the ares author didn't want the -improvements that were vital for our use of it. - -This package is dubbed 'c-ares' since I (Daniel Stenberg) wanted this for use -within the curl project (hence the letter C) and it makes a nice pun. Also, -c-ares is not API compatible with ares: a new name makes that more obvious to -the public. - -The original libares was distributed at athena-dist.mit.edu:pub/ATHENA/ares. diff --git a/deps/uv/c-ares/README.msvc b/deps/uv/c-ares/README.msvc deleted file mode 100644 index 9c1163ac5f..0000000000 --- a/deps/uv/c-ares/README.msvc +++ /dev/null @@ -1,118 +0,0 @@ - - - ___ __ _ _ __ ___ ___ - / __| ___ / _` | '__/ _ \/ __| - | (_ |___| (_| | | | __/\__ \ - \___| \__,_|_| \___||___/ - - - How to build c-ares using MSVC or Visual Studio - ================================================= - - - - How to build using MSVC from the command line - --------------------------------------------- - - Open a command prompt window and ensure that the environment is properly - set up in order to use MSVC or Visual Studio compiler tools. - - Change to c-ares source folder where Makefile.msvc file is located and run: - - > nmake -f Makefile.msvc - - This will build all c-ares libraries as well as three sample programs. - - Once the above command has finished a new folder named MSVCXX will exist - below the folder where makefile.msvc is found. The name of the folder - depends on the MSVC compiler version being used to build c-ares. - - Below the MSVCXX folder there will exist four folders named 'cares', - 'ahost', 'acountry', and 'adig'. The 'cares' folder is the one that - holds the c-ares libraries you have just generated, the other three - hold sample programs that use the libraries. - - The above command builds four versions of the c-ares library, dynamic - and static versions and each one in release and debug flavours. Each - of these is found in folders named dll-release, dll-debug, lib-release, - and lib-debug, which hang from the 'cares' folder mentioned above. Each - sample program also has folders with the same names to reflect which - library version it is using. - - - How to build using Visual Studio 6 IDE - -------------------------------------- - - A VC++ 6.0 reference workspace (vc6aws.dsw) is available within the 'vc' - folder to allow proper building of the library and sample programs. - - 1) Open the vc6aws.dsw workspace with MSVC6's IDE. - 2) Select 'Build' from top menu. - 3) Select 'Batch Build' from dropdown menu. - 4) Make sure that the sixteen project configurations are 'checked'. - 5) Click on the 'Build' button. - 6) Once the sixteen project configurations are built you are done. - - Dynamic and static c-ares libraries are built in debug and release flavours, - and can be located each one in its own subdirectory, dll-debug, dll-release, - lib-debug and lib-release, all of them below the 'vc\cares' subdirectory. - - In the same way four executable versions of each sample program are built, - each using its respective library. The resulting sample executables are - located in its own subdirectory, dll-debug, dll-release, lib-debug and - lib-release, below the 'vc\acountry', 'vc\adig' and 'vc\ahost'folders. - - These reference VC++ 6.0 configurations are generated using the dynamic CRT. - - - How to build using Visual Studio 2003 or newer IDE - -------------------------------------------------- - - First you have to convert the VC++ 6.0 reference workspace and project files - to the Visual Studio IDE version you are using, following next steps: - - 1) Open vc\vc6aws.dsw with VS20XX. - 2) Allow VS20XX to update all projects and workspaces. - 3) Save ALL and close VS20XX. - 4) Open vc\vc6aws.sln with VS20XX. - 5) Select batch build, check 'all' projects and click 'build' button. - - Same comments relative to generated files and folders as done above for - Visual Studio 6 IDE apply here. - - - Relationship between c-ares library file names and versions - ----------------------------------------------------------- - - c-ares static release library version files: - - libcares.lib -> static release library - - c-ares static debug library version files: - - libcaresd.lib -> static debug library - - c-ares dynamic release library version files: - - cares.dll -> dynamic release library - cares.lib -> import library for the dynamic release library - cares.exp -> export file for the dynamic release library - - c-ares dynamic debug library version files: - - caresd.dll -> dynamic debug library - caresd.lib -> import library for the dynamic debug library - caresd.exp -> export file for the dynamic debug library - caresd.pdb -> debug symbol file for the dynamic debug library - - - How to use c-ares static libraries - ---------------------------------- - - When using the c-ares static library in your program, you will have to - define preprocessor symbol CARES_STATICLIB while building your program, - otherwise you will get errors at linkage stage. - - -Have Fun! - diff --git a/deps/uv/c-ares/README.node b/deps/uv/c-ares/README.node deleted file mode 100644 index 17503096fd..0000000000 --- a/deps/uv/c-ares/README.node +++ /dev/null @@ -1,21 +0,0 @@ -Library: c-ares, DNS resolver - -Version: 1.7.3 (11 June, 2010) - -Authors: Greg Hudson, Daniel Stenberg - -License: MIT - -Notes: - -Just use waf instead of the autoconf based configure script. Delete most of -the documentation and other files distributed with it. To upgrade, run -./configure on linux, macintosh, solaris (and other supported platforms) and -copy -- ares_config.h -- ares_setup.h -- ares_build.h -into the appropriate directory. - - - diff --git a/deps/uv/c-ares/RELEASE-NOTES b/deps/uv/c-ares/RELEASE-NOTES deleted file mode 100644 index 639a314e19..0000000000 --- a/deps/uv/c-ares/RELEASE-NOTES +++ /dev/null @@ -1,25 +0,0 @@ -c-ares version 1.7.4 - -Changed: - - o local-bind: Support binding to local interface/IPs, see - ares_set_local_ip4, ares_set_local_ip6, ares_set_local_dev - -Fixed: - - o memory leak in ares_getnameinfo - o add missing break that caused get_ares_servers to fail - o ares_parse_a_reply: fix CNAME response parsing - o init_by_options: don't copy an empty sortlist - o Replaced uint32_t with unsigned int to fix broken builds - on a couple of platforms - o Fix lookup with HOSTALIASES set - o adig: fix NAPTR parsing - o compiler warning cleanups - -Thanks go to these friendly people for their efforts and contributions: - - Andrew C. Morrow, Ben Greear, Ben Noordhuis, Daniel Stenberg, - Guenter Knauf, Mike Crowe, Patrik Thunstrom, Yang Tse - -Have fun! diff --git a/deps/uv/c-ares/TODO b/deps/uv/c-ares/TODO deleted file mode 100644 index fa31cea6fb..0000000000 --- a/deps/uv/c-ares/TODO +++ /dev/null @@ -1,23 +0,0 @@ -TODO -==== - -ares_reinit() - -- To allow an app to force a re-read of /etc/resolv.conf etc, pretty much - like the res_init() resolver function offers - -ares_gethostbyname - -- When built to support IPv6, it needs to also support PF_UNSPEC or similar, - so that an application can ask for any protocol and then c-ares would return - all known resolves and not just explicitly IPv4 _or_ IPv6 resolves. - -ares_process - -- Upon next ABI breakage ares_process() should be changed to return 'int' - and return ARES_ENOTINITIALIZED if ares_library_init() has not been called. - -ares_process_fd - -- Upon next ABI breakage ares_process_fd() should be changed to return - 'int' and return ARES_ENOTINITIALIZED if library has not been initialized. diff --git a/deps/uv/c-ares/ares.h b/deps/uv/c-ares/ares.h deleted file mode 100644 index a8d381576e..0000000000 --- a/deps/uv/c-ares/ares.h +++ /dev/null @@ -1,581 +0,0 @@ - -/* Copyright 1998, 2009 by the Massachusetts Institute of Technology. - * Copyright (C) 2007-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#ifndef ARES__H -#define ARES__H - -#include "ares_version.h" /* c-ares version defines */ - -/* - * Define WIN32 when build target is Win32 API - */ - -#if (defined(_WIN32) || defined(__WIN32__)) && \ - !defined(WIN32) && !defined(__SYMBIAN32__) -# define WIN32 -#endif - -/*************************** libuv patch ***************/ - -/* - * We want to avoid autoconf altogether since there are a finite number of - * operating systems and simply build c-ares. Therefore we do not want the - * configurations provided by ares_build.h since we are always statically - * linking c-ares into libuv. Having a system dependent ares_build.h forces - * all users of ares.h to include the correct ares_build.h. We do not care - * about the linking checks provided by ares_rules.h. This would complicate - * the libuv build process. - */ - - -#if defined(WIN32) -/* Configure process defines this to 1 when it finds out that system */ -/* header file ws2tcpip.h must be included by the external interface. */ -/* #undef CARES_PULL_WS2TCPIP_H */ -# include -# include -# include - -#else /* Not Windows */ - -# include -# include -#endif - -#if 0 -/* The size of `long', as computed by sizeof. */ -#define CARES_SIZEOF_LONG 4 -#endif - -/* Integral data type used for ares_socklen_t. */ -#define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t - -#if 0 -/* The size of `ares_socklen_t', as computed by sizeof. */ -#define CARES_SIZEOF_ARES_SOCKLEN_T 4 -#endif - -/* Data type definition of ares_socklen_t. */ -typedef int ares_socklen_t; - -#if 0 /* libuv disabled */ -#include "ares_rules.h" /* c-ares rules enforcement */ -#endif - -/*********************** end libuv patch ***************/ - -#include - -/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish - libc5-based Linux systems. Only include it on system that are known to - require it! */ -#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \ - defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) -#include -#endif -#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) -#include -#endif - -#if defined(WATT32) -# include -# include -# include -#elif defined(WIN32) -# include -# include -# include -#else -# include -# include -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -/* -** c-ares external API function linkage decorations. -*/ - -#if !defined(CARES_STATICLIB) && \ - (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)) - /* __declspec function decoration for Win32 and Symbian DLL's */ -# if defined(CARES_BUILDING_LIBRARY) -# define CARES_EXTERN __declspec(dllexport) -# else -# define CARES_EXTERN __declspec(dllimport) -# endif -#else - /* visibility function decoration for other cases */ -# if !defined(CARES_SYMBOL_HIDING) || \ - defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__) -# define CARES_EXTERN -# else -# define CARES_EXTERN CARES_SYMBOL_SCOPE_EXTERN -# endif -#endif - - -#define ARES_SUCCESS 0 - -/* Server error codes (ARES_ENODATA indicates no relevant answer) */ -#define ARES_ENODATA 1 -#define ARES_EFORMERR 2 -#define ARES_ESERVFAIL 3 -#define ARES_ENOTFOUND 4 -#define ARES_ENOTIMP 5 -#define ARES_EREFUSED 6 - -/* Locally generated error codes */ -#define ARES_EBADQUERY 7 -#define ARES_EBADNAME 8 -#define ARES_EBADFAMILY 9 -#define ARES_EBADRESP 10 -#define ARES_ECONNREFUSED 11 -#define ARES_ETIMEOUT 12 -#define ARES_EOF 13 -#define ARES_EFILE 14 -#define ARES_ENOMEM 15 -#define ARES_EDESTRUCTION 16 -#define ARES_EBADSTR 17 - -/* ares_getnameinfo error codes */ -#define ARES_EBADFLAGS 18 - -/* ares_getaddrinfo error codes */ -#define ARES_ENONAME 19 -#define ARES_EBADHINTS 20 - -/* Uninitialized library error code */ -#define ARES_ENOTINITIALIZED 21 /* introduced in 1.7.0 */ - -/* ares_library_init error codes */ -#define ARES_ELOADIPHLPAPI 22 /* introduced in 1.7.0 */ -#define ARES_EADDRGETNETWORKPARAMS 23 /* introduced in 1.7.0 */ - -/* More error codes */ -#define ARES_ECANCELLED 24 /* introduced in 1.7.0 */ - -/* Flag values */ -#define ARES_FLAG_USEVC (1 << 0) -#define ARES_FLAG_PRIMARY (1 << 1) -#define ARES_FLAG_IGNTC (1 << 2) -#define ARES_FLAG_NORECURSE (1 << 3) -#define ARES_FLAG_STAYOPEN (1 << 4) -#define ARES_FLAG_NOSEARCH (1 << 5) -#define ARES_FLAG_NOALIASES (1 << 6) -#define ARES_FLAG_NOCHECKRESP (1 << 7) - -/* Option mask values */ -#define ARES_OPT_FLAGS (1 << 0) -#define ARES_OPT_TIMEOUT (1 << 1) -#define ARES_OPT_TRIES (1 << 2) -#define ARES_OPT_NDOTS (1 << 3) -#define ARES_OPT_UDP_PORT (1 << 4) -#define ARES_OPT_TCP_PORT (1 << 5) -#define ARES_OPT_SERVERS (1 << 6) -#define ARES_OPT_DOMAINS (1 << 7) -#define ARES_OPT_LOOKUPS (1 << 8) -#define ARES_OPT_SOCK_STATE_CB (1 << 9) -#define ARES_OPT_SORTLIST (1 << 10) -#define ARES_OPT_SOCK_SNDBUF (1 << 11) -#define ARES_OPT_SOCK_RCVBUF (1 << 12) -#define ARES_OPT_TIMEOUTMS (1 << 13) -#define ARES_OPT_ROTATE (1 << 14) - -/* Nameinfo flag values */ -#define ARES_NI_NOFQDN (1 << 0) -#define ARES_NI_NUMERICHOST (1 << 1) -#define ARES_NI_NAMEREQD (1 << 2) -#define ARES_NI_NUMERICSERV (1 << 3) -#define ARES_NI_DGRAM (1 << 4) -#define ARES_NI_TCP 0 -#define ARES_NI_UDP ARES_NI_DGRAM -#define ARES_NI_SCTP (1 << 5) -#define ARES_NI_DCCP (1 << 6) -#define ARES_NI_NUMERICSCOPE (1 << 7) -#define ARES_NI_LOOKUPHOST (1 << 8) -#define ARES_NI_LOOKUPSERVICE (1 << 9) -/* Reserved for future use */ -#define ARES_NI_IDN (1 << 10) -#define ARES_NI_IDN_ALLOW_UNASSIGNED (1 << 11) -#define ARES_NI_IDN_USE_STD3_ASCII_RULES (1 << 12) - -/* Addrinfo flag values */ -#define ARES_AI_CANONNAME (1 << 0) -#define ARES_AI_NUMERICHOST (1 << 1) -#define ARES_AI_PASSIVE (1 << 2) -#define ARES_AI_NUMERICSERV (1 << 3) -#define ARES_AI_V4MAPPED (1 << 4) -#define ARES_AI_ALL (1 << 5) -#define ARES_AI_ADDRCONFIG (1 << 6) -/* Reserved for future use */ -#define ARES_AI_IDN (1 << 10) -#define ARES_AI_IDN_ALLOW_UNASSIGNED (1 << 11) -#define ARES_AI_IDN_USE_STD3_ASCII_RULES (1 << 12) -#define ARES_AI_CANONIDN (1 << 13) - -#define ARES_AI_MASK (ARES_AI_CANONNAME|ARES_AI_NUMERICHOST|ARES_AI_PASSIVE| \ - ARES_AI_NUMERICSERV|ARES_AI_V4MAPPED|ARES_AI_ALL| \ - ARES_AI_ADDRCONFIG) -#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about this - many sockets */ -#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num))) -#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \ - ARES_GETSOCK_MAXNUM))) - -/* c-ares library initialization flag values */ -#define ARES_LIB_INIT_NONE (0) -#define ARES_LIB_INIT_WIN32 (1 << 0) -#define ARES_LIB_INIT_ALL (ARES_LIB_INIT_WIN32) - - -/* - * Typedef our socket type - */ - -#ifndef ares_socket_typedef -#ifdef WIN32 -typedef SOCKET ares_socket_t; -#define ARES_SOCKET_BAD INVALID_SOCKET -#else -typedef int ares_socket_t; -#define ARES_SOCKET_BAD -1 -#endif -#define ares_socket_typedef -#endif /* ares_socket_typedef */ - -typedef void (*ares_sock_state_cb)(void *data, - ares_socket_t socket_fd, - int readable, - int writable); - -struct apattern; - -/* NOTE about the ares_options struct to users and developers. - - This struct will remain looking like this. It will not be extended nor - shrunk in future releases, but all new options will be set by ares_set_*() - options instead of with the ares_init_options() function. - - Eventually (in a galaxy far far away), all options will be settable by - ares_set_*() options and the ares_init_options() function will become - deprecated. - - When new options are added to c-ares, they are not added to this - struct. And they are not "saved" with the ares_save_options() function but - instead we encourage the use of the ares_dup() function. Needless to say, - if you add config options to c-ares you need to make sure ares_dup() - duplicates this new option. - - */ -struct ares_options { - int flags; - int timeout; /* in seconds or milliseconds, depending on options */ - int tries; - int ndots; - unsigned short udp_port; - unsigned short tcp_port; - int socket_send_buffer_size; - int socket_receive_buffer_size; - struct in_addr *servers; - int nservers; - char **domains; - int ndomains; - char *lookups; - ares_sock_state_cb sock_state_cb; - void *sock_state_cb_data; - struct apattern *sortlist; - int nsort; -}; - -struct hostent; -struct timeval; -struct sockaddr; -struct ares_channeldata; - -typedef struct ares_channeldata *ares_channel; - -typedef void (*ares_callback)(void *arg, - int status, - int timeouts, - unsigned char *abuf, - int alen); - -typedef void (*ares_host_callback)(void *arg, - int status, - int timeouts, - struct hostent *hostent); - -typedef void (*ares_nameinfo_callback)(void *arg, - int status, - int timeouts, - char *node, - char *service); - -typedef int (*ares_sock_create_callback)(ares_socket_t socket_fd, - int type, - void *data); - -CARES_EXTERN int ares_library_init(int flags); - -CARES_EXTERN void ares_library_cleanup(void); - -CARES_EXTERN const char *ares_version(int *version); - -CARES_EXTERN int ares_init(ares_channel *channelptr); - -CARES_EXTERN int ares_init_options(ares_channel *channelptr, - struct ares_options *options, - int optmask); - -CARES_EXTERN int ares_save_options(ares_channel channel, - struct ares_options *options, - int *optmask); - -CARES_EXTERN void ares_destroy_options(struct ares_options *options); - -CARES_EXTERN int ares_dup(ares_channel *dest, - ares_channel src); - -CARES_EXTERN void ares_destroy(ares_channel channel); - -CARES_EXTERN void ares_cancel(ares_channel channel); - -/* These next 3 configure local binding for the out-going socket - * connection. Use these to specify source IP and/or network device - * on multi-homed systems. - */ -CARES_EXTERN void ares_set_local_ip4(ares_channel channel, unsigned int local_ip); - -/* local_ip6 should be 16 bytes in length */ -CARES_EXTERN void ares_set_local_ip6(ares_channel channel, - const unsigned char* local_ip6); - -/* local_dev_name should be null terminated. */ -CARES_EXTERN void ares_set_local_dev(ares_channel channel, - const char* local_dev_name); - -CARES_EXTERN void ares_set_socket_callback(ares_channel channel, - ares_sock_create_callback callback, - void *user_data); - -CARES_EXTERN void ares_send(ares_channel channel, - const unsigned char *qbuf, - int qlen, - ares_callback callback, - void *arg); - -CARES_EXTERN void ares_query(ares_channel channel, - const char *name, - int dnsclass, - int type, - ares_callback callback, - void *arg); - -CARES_EXTERN void ares_search(ares_channel channel, - const char *name, - int dnsclass, - int type, - ares_callback callback, - void *arg); - -CARES_EXTERN void ares_gethostbyname(ares_channel channel, - const char *name, - int family, - ares_host_callback callback, - void *arg); - -CARES_EXTERN int ares_gethostbyname_file(ares_channel channel, - const char *name, - int family, - struct hostent **host); - -CARES_EXTERN void ares_gethostbyaddr(ares_channel channel, - const void *addr, - int addrlen, - int family, - ares_host_callback callback, - void *arg); - -CARES_EXTERN void ares_getnameinfo(ares_channel channel, - const struct sockaddr *sa, - ares_socklen_t salen, - int flags, - ares_nameinfo_callback callback, - void *arg); - -CARES_EXTERN int ares_fds(ares_channel channel, - fd_set *read_fds, - fd_set *write_fds); - -CARES_EXTERN int ares_getsock(ares_channel channel, - ares_socket_t *socks, - int numsocks); - -CARES_EXTERN struct timeval *ares_timeout(ares_channel channel, - struct timeval *maxtv, - struct timeval *tv); - -CARES_EXTERN void ares_process(ares_channel channel, - fd_set *read_fds, - fd_set *write_fds); - -CARES_EXTERN void ares_process_fd(ares_channel channel, - ares_socket_t read_fd, - ares_socket_t write_fd); - -CARES_EXTERN int ares_mkquery(const char *name, - int dnsclass, - int type, - unsigned short id, - int rd, - unsigned char **buf, - int *buflen); - -CARES_EXTERN int ares_expand_name(const unsigned char *encoded, - const unsigned char *abuf, - int alen, - char **s, - long *enclen); - -CARES_EXTERN int ares_expand_string(const unsigned char *encoded, - const unsigned char *abuf, - int alen, - unsigned char **s, - long *enclen); - -/* - * NOTE: before c-ares 1.7.0 we would most often use the system in6_addr - * struct below when ares itself was built, but many apps would use this - * private version since the header checked a HAVE_* define for it. Starting - * with 1.7.0 we always declare and use our own to stop relying on the - * system's one. - */ -struct ares_in6_addr { - union { - unsigned char _S6_u8[16]; - } _S6_un; -}; - -struct ares_addrttl { - struct in_addr ipaddr; - int ttl; -}; - -struct ares_addr6ttl { - struct ares_in6_addr ip6addr; - int ttl; -}; - -struct ares_srv_reply { - struct ares_srv_reply *next; - char *host; - unsigned short priority; - unsigned short weight; - unsigned short port; -}; - -struct ares_mx_reply { - struct ares_mx_reply *next; - char *host; - unsigned short priority; -}; - -struct ares_txt_reply { - struct ares_txt_reply *next; - unsigned char *txt; - size_t length; /* length excludes null termination */ -}; - -/* -** Parse the buffer, starting at *abuf and of length alen bytes, previously -** obtained from an ares_search call. Put the results in *host, if nonnull. -** Also, if addrttls is nonnull, put up to *naddrttls IPv4 addresses along with -** their TTLs in that array, and set *naddrttls to the number of addresses -** so written. -*/ - -CARES_EXTERN int ares_parse_a_reply(const unsigned char *abuf, - int alen, - struct hostent **host, - struct ares_addrttl *addrttls, - int *naddrttls); - -CARES_EXTERN int ares_parse_aaaa_reply(const unsigned char *abuf, - int alen, - struct hostent **host, - struct ares_addr6ttl *addrttls, - int *naddrttls); - -CARES_EXTERN int ares_parse_ptr_reply(const unsigned char *abuf, - int alen, - const void *addr, - int addrlen, - int family, - struct hostent **host); - -CARES_EXTERN int ares_parse_ns_reply(const unsigned char *abuf, - int alen, - struct hostent **host); - -CARES_EXTERN int ares_parse_srv_reply(const unsigned char* abuf, - int alen, - struct ares_srv_reply** srv_out); - -CARES_EXTERN int ares_parse_mx_reply(const unsigned char* abuf, - int alen, - struct ares_mx_reply** mx_out); - -CARES_EXTERN int ares_parse_txt_reply(const unsigned char* abuf, - int alen, - struct ares_txt_reply** txt_out); - -CARES_EXTERN void ares_free_string(void *str); - -CARES_EXTERN void ares_free_hostent(struct hostent *host); - -CARES_EXTERN void ares_free_data(void *dataptr); - -CARES_EXTERN const char *ares_strerror(int code); - -/* TODO: Hold port here as well. */ -struct ares_addr_node { - struct ares_addr_node *next; - int family; - union { - struct in_addr addr4; - struct ares_in6_addr addr6; - } addr; -}; - -CARES_EXTERN int ares_set_servers(ares_channel channel, - struct ares_addr_node *servers); - -/* Incomming string format: host[:port][,host[:port]]... */ -CARES_EXTERN int ares_set_servers_csv(ares_channel channel, - const char* servers); - -CARES_EXTERN int ares_get_servers(ares_channel channel, - struct ares_addr_node **servers); - -#ifdef __cplusplus -} -#endif - -#endif /* ARES__H */ diff --git a/deps/uv/c-ares/ares__close_sockets.c b/deps/uv/c-ares/ares__close_sockets.c deleted file mode 100644 index 5d391a9ef2..0000000000 --- a/deps/uv/c-ares/ares__close_sockets.c +++ /dev/null @@ -1,66 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#include -#ifdef HAVE_UNISTD_H -#include -#endif - -#include "ares.h" -#include "ares_private.h" - -void ares__close_sockets(ares_channel channel, struct server_state *server) -{ - struct send_request *sendreq; - - /* Free all pending output buffers. */ - while (server->qhead) - { - /* Advance server->qhead; pull out query as we go. */ - sendreq = server->qhead; - server->qhead = sendreq->next; - if (sendreq->data_storage != NULL) - free(sendreq->data_storage); - free(sendreq); - } - server->qtail = NULL; - - /* Reset any existing input buffer. */ - if (server->tcp_buffer) - free(server->tcp_buffer); - server->tcp_buffer = NULL; - server->tcp_lenbuf_pos = 0; - - /* Reset brokenness */ - server->is_broken = 0; - - /* Close the TCP and UDP sockets. */ - if (server->tcp_socket != ARES_SOCKET_BAD) - { - SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0); - sclose(server->tcp_socket); - server->tcp_socket = ARES_SOCKET_BAD; - server->tcp_connection_generation = ++channel->tcp_connection_generation; - } - if (server->udp_socket != ARES_SOCKET_BAD) - { - SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0); - sclose(server->udp_socket); - server->udp_socket = ARES_SOCKET_BAD; - } -} diff --git a/deps/uv/c-ares/ares__get_hostent.c b/deps/uv/c-ares/ares__get_hostent.c deleted file mode 100644 index 298df09182..0000000000 --- a/deps/uv/c-ares/ares__get_hostent.c +++ /dev/null @@ -1,263 +0,0 @@ - -/* Copyright 1998, 2010 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif - -#include "ares.h" -#include "inet_net_pton.h" -#include "ares_private.h" - -int ares__get_hostent(FILE *fp, int family, struct hostent **host) -{ - char *line = NULL, *p, *q, **alias; - char *txtaddr, *txthost, *txtalias; - int status; - size_t addrlen, linesize, naliases; - struct ares_addr addr; - struct hostent *hostent = NULL; - - *host = NULL; /* Assume failure */ - - /* Validate family */ - switch (family) { - case AF_INET: - case AF_INET6: - case AF_UNSPEC: - break; - default: - return ARES_EBADFAMILY; - } - - while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) - { - - /* Trim line comment. */ - p = line; - while (*p && (*p != '#')) - p++; - *p = '\0'; - - /* Trim trailing whitespace. */ - q = p - 1; - while ((q >= line) && ISSPACE(*q)) - q--; - *++q = '\0'; - - /* Skip leading whitespace. */ - p = line; - while (*p && ISSPACE(*p)) - p++; - if (!*p) - /* Ignore line if empty. */ - continue; - - /* Pointer to start of IPv4 or IPv6 address part. */ - txtaddr = p; - - /* Advance past address part. */ - while (*p && !ISSPACE(*p)) - p++; - if (!*p) - /* Ignore line if reached end of line. */ - continue; - - /* Null terminate address part. */ - *p = '\0'; - - /* Advance to host name */ - p++; - while (*p && ISSPACE(*p)) - p++; - if (!*p) - /* Ignore line if reached end of line. */ - continue; - - /* Pointer to start of host name. */ - txthost = p; - - /* Advance past host name. */ - while (*p && !ISSPACE(*p)) - p++; - - /* Pointer to start of first alias. */ - txtalias = NULL; - if (*p) - { - q = p + 1; - while (*q && ISSPACE(*q)) - q++; - if (*q) - txtalias = q; - } - - /* Null terminate host name. */ - *p = '\0'; - - /* find out number of aliases. */ - naliases = 0; - if (txtalias) - { - p = txtalias; - while (*p) - { - while (*p && !ISSPACE(*p)) - p++; - while (*p && ISSPACE(*p)) - p++; - naliases++; - } - } - - /* Convert address string to network address for the requested family. */ - addrlen = 0; - addr.family = AF_UNSPEC; - addr.addrV4.s_addr = INADDR_NONE; - if ((family == AF_INET) || (family == AF_UNSPEC)) - { - addr.addrV4.s_addr = inet_addr(txtaddr); - if (addr.addrV4.s_addr != INADDR_NONE) - { - /* Actual network address family and length. */ - addr.family = AF_INET; - addrlen = sizeof(addr.addrV4); - } - } - if ((family == AF_INET6) || ((family == AF_UNSPEC) && (!addrlen))) - { - if (ares_inet_pton(AF_INET6, txtaddr, &addr.addrV6) > 0) - { - /* Actual network address family and length. */ - addr.family = AF_INET6; - addrlen = sizeof(addr.addrV6); - } - } - if (!addrlen) - /* Ignore line if invalid address string for the requested family. */ - continue; - - /* - ** Actual address family possible values are AF_INET and AF_INET6 only. - */ - - /* Allocate memory for the hostent structure. */ - hostent = malloc(sizeof(struct hostent)); - if (!hostent) - break; - - /* Initialize fields for out of memory condition. */ - hostent->h_aliases = NULL; - hostent->h_addr_list = NULL; - - /* Copy official host name. */ - hostent->h_name = strdup(txthost); - if (!hostent->h_name) - break; - - /* Copy network address. */ - hostent->h_addr_list = malloc(2 * sizeof(char *)); - if (!hostent->h_addr_list) - break; - hostent->h_addr_list[1] = NULL; - hostent->h_addr_list[0] = malloc(addrlen); - if (!hostent->h_addr_list[0]) - break; - if (addr.family == AF_INET) - memcpy(hostent->h_addr_list[0], &addr.addrV4, sizeof(addr.addrV4)); - else - memcpy(hostent->h_addr_list[0], &addr.addrV6, sizeof(addr.addrV6)); - - /* Copy aliases. */ - hostent->h_aliases = malloc((naliases + 1) * sizeof(char *)); - if (!hostent->h_aliases) - break; - alias = hostent->h_aliases; - while (naliases) - *(alias + naliases--) = NULL; - *alias = NULL; - while (txtalias) - { - p = txtalias; - while (*p && !ISSPACE(*p)) - p++; - q = p; - while (*q && ISSPACE(*q)) - q++; - *p = '\0'; - if ((*alias = strdup(txtalias)) == NULL) - break; - alias++; - txtalias = *q ? q : NULL; - } - if (txtalias) - /* Alias memory allocation failure. */ - break; - - /* Copy actual network address family and length. */ - hostent->h_addrtype = addr.family; - hostent->h_length = (int)addrlen; - - /* Free line buffer. */ - free(line); - - /* Return hostent successfully */ - *host = hostent; - return ARES_SUCCESS; - - } - - /* If allocated, free line buffer. */ - if (line) - free(line); - - if (status == ARES_SUCCESS) - { - /* Memory allocation failure; clean up. */ - if (hostent) - { - if (hostent->h_name) - free((char *) hostent->h_name); - if (hostent->h_aliases) - { - for (alias = hostent->h_aliases; *alias; alias++) - free(*alias); - free(hostent->h_aliases); - } - if (hostent->h_addr_list) - { - if (hostent->h_addr_list[0]) - free(hostent->h_addr_list[0]); - free(hostent->h_addr_list); - } - free(hostent); - } - return ARES_ENOMEM; - } - - return status; -} diff --git a/deps/uv/c-ares/ares__read_line.c b/deps/uv/c-ares/ares__read_line.c deleted file mode 100644 index ca018035ec..0000000000 --- a/deps/uv/c-ares/ares__read_line.c +++ /dev/null @@ -1,71 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include -#include -#include -#include "ares.h" -#include "ares_nowarn.h" -#include "ares_private.h" - -/* This is an internal function. Its contract is to read a line from - * a file into a dynamically allocated buffer, zeroing the trailing - * newline if there is one. The calling routine may call - * ares__read_line multiple times with the same buf and bufsize - * pointers; *buf will be reallocated and *bufsize adjusted as - * appropriate. The initial value of *buf should be NULL. After the - * calling routine is done reading lines, it should free *buf. - */ -int ares__read_line(FILE *fp, char **buf, size_t *bufsize) -{ - char *newbuf; - size_t offset = 0; - size_t len; - - if (*buf == NULL) - { - *buf = malloc(128); - if (!*buf) - return ARES_ENOMEM; - *bufsize = 128; - } - - for (;;) - { - int bytestoread = aresx_uztosi(*bufsize - offset); - - if (!fgets(*buf + offset, bytestoread, fp)) - return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF; - len = offset + strlen(*buf + offset); - if ((*buf)[len - 1] == '\n') - { - (*buf)[len - 1] = 0; - break; - } - offset = len; - if(len < *bufsize - 1) - continue; - - /* Allocate more space. */ - newbuf = realloc(*buf, *bufsize * 2); - if (!newbuf) - return ARES_ENOMEM; - *buf = newbuf; - *bufsize *= 2; - } - return ARES_SUCCESS; -} diff --git a/deps/uv/c-ares/ares__timeval.c b/deps/uv/c-ares/ares__timeval.c deleted file mode 100644 index f7aa7883f9..0000000000 --- a/deps/uv/c-ares/ares__timeval.c +++ /dev/null @@ -1,111 +0,0 @@ - -/* Copyright (C) 2008 by Daniel Stenberg et al - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. M.I.T. makes no representations about the - * suitability of this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include "ares.h" -#include "ares_private.h" - -#if defined(WIN32) && !defined(MSDOS) - -struct timeval ares__tvnow(void) -{ - /* - ** GetTickCount() is available on _all_ Windows versions from W95 up - ** to nowadays. Returns milliseconds elapsed since last system boot, - ** increases monotonically and wraps once 49.7 days have elapsed. - */ - struct timeval now; - DWORD milliseconds = GetTickCount(); - now.tv_sec = milliseconds / 1000; - now.tv_usec = (milliseconds % 1000) * 1000; - return now; -} - -#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC) - -struct timeval ares__tvnow(void) -{ - /* - ** clock_gettime() is granted to be increased monotonically when the - ** monotonic clock is queried. Time starting point is unspecified, it - ** could be the system start-up time, the Epoch, or something else, - ** in any case the time starting point does not change once that the - ** system has started up. - */ - struct timeval now; - struct timespec tsnow; - if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) { - now.tv_sec = tsnow.tv_sec; - now.tv_usec = tsnow.tv_nsec / 1000; - } - /* - ** Even when the configure process has truly detected monotonic clock - ** availability, it might happen that it is not actually available at - ** run-time. When this occurs simply fallback to other time source. - */ -#ifdef HAVE_GETTIMEOFDAY - else - (void)gettimeofday(&now, NULL); -#else - else { - now.tv_sec = (long)time(NULL); - now.tv_usec = 0; - } -#endif - return now; -} - -#elif defined(HAVE_GETTIMEOFDAY) - -struct timeval ares__tvnow(void) -{ - /* - ** gettimeofday() is not granted to be increased monotonically, due to - ** clock drifting and external source time synchronization it can jump - ** forward or backward in time. - */ - struct timeval now; - (void)gettimeofday(&now, NULL); - return now; -} - -#else - -struct timeval ares__tvnow(void) -{ - /* - ** time() returns the value of time in seconds since the Epoch. - */ - struct timeval now; - now.tv_sec = (long)time(NULL); - now.tv_usec = 0; - return now; -} - -#endif - -#if 0 /* Not used */ -/* - * Make sure that the first argument is the more recent time, as otherwise - * we'll get a weird negative time-diff back... - * - * Returns: the time difference in number of milliseconds. - */ -long ares__tvdiff(struct timeval newer, struct timeval older) -{ - return (newer.tv_sec-older.tv_sec)*1000+ - (newer.tv_usec-older.tv_usec)/1000; -} -#endif - diff --git a/deps/uv/c-ares/ares_cancel.c b/deps/uv/c-ares/ares_cancel.c deleted file mode 100644 index eb790ae00d..0000000000 --- a/deps/uv/c-ares/ares_cancel.c +++ /dev/null @@ -1,63 +0,0 @@ - -/* Copyright (C) 2004 by Daniel Stenberg et al - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. M.I.T. makes no representations about the - * suitability of this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include -#include -#include "ares.h" -#include "ares_private.h" - -/* - * ares_cancel() cancels all ongoing requests/resolves that might be going on - * on the given channel. It does NOT kill the channel, use ares_destroy() for - * that. - */ -void ares_cancel(ares_channel channel) -{ - struct query *query; - struct list_node* list_head; - struct list_node* list_node; - int i; - - list_head = &(channel->all_queries); - for (list_node = list_head->next; list_node != list_head; ) - { - query = list_node->data; - list_node = list_node->next; /* since we're deleting the query */ - query->callback(query->arg, ARES_ECANCELLED, 0, NULL, 0); - ares__free_query(query); - } -#ifndef NDEBUG - /* Freeing the query should remove it from all the lists in which it sits, - * so all query lists should be empty now. - */ - assert(ares__is_list_empty(&(channel->all_queries))); - for (i = 0; i < ARES_QID_TABLE_SIZE; i++) - { - assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); - } - for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) - { - assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); - } -#endif - if (!(channel->flags & ARES_FLAG_STAYOPEN)) - { - if (channel->servers) - { - for (i = 0; i < channel->nservers; i++) - ares__close_sockets(channel, &channel->servers[i]); - } - } -} diff --git a/deps/uv/c-ares/ares_data.c b/deps/uv/c-ares/ares_data.c deleted file mode 100644 index a2477be192..0000000000 --- a/deps/uv/c-ares/ares_data.c +++ /dev/null @@ -1,190 +0,0 @@ - -/* Copyright (C) 2009-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - - -#include "ares_setup.h" - -#include - -#include "ares.h" -#include "ares_data.h" -#include "ares_private.h" - - -/* -** ares_free_data() - c-ares external API function. -** -** This function must be used by the application to free data memory that -** has been internally allocated by some c-ares function and for which a -** pointer has already been returned to the calling application. The list -** of c-ares functions returning pointers that must be free'ed using this -** function is: -** -** ares_get_servers() -** ares_parse_srv_reply() -** ares_parse_txt_reply() -*/ - -void ares_free_data(void *dataptr) -{ - struct ares_data *ptr; - - if (!dataptr) - return; - -#ifdef __INTEL_COMPILER -# pragma warning(push) -# pragma warning(disable:1684) - /* 1684: conversion from pointer to same-sized integral type */ -#endif - - ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); - -#ifdef __INTEL_COMPILER -# pragma warning(pop) -#endif - - if (ptr->mark != ARES_DATATYPE_MARK) - return; - - switch (ptr->type) - { - case ARES_DATATYPE_MX_REPLY: - - if (ptr->data.mx_reply.next) - ares_free_data(ptr->data.mx_reply.next); - if (ptr->data.mx_reply.host) - free(ptr->data.mx_reply.host); - break; - - case ARES_DATATYPE_SRV_REPLY: - - if (ptr->data.srv_reply.next) - ares_free_data(ptr->data.srv_reply.next); - if (ptr->data.srv_reply.host) - free(ptr->data.srv_reply.host); - break; - - case ARES_DATATYPE_TXT_REPLY: - - if (ptr->data.txt_reply.next) - ares_free_data(ptr->data.txt_reply.next); - if (ptr->data.txt_reply.txt) - free(ptr->data.txt_reply.txt); - break; - - case ARES_DATATYPE_ADDR_NODE: - - if (ptr->data.addr_node.next) - ares_free_data(ptr->data.addr_node.next); - break; - - default: - return; - } - - free(ptr); -} - - -/* -** ares_malloc_data() - c-ares internal helper function. -** -** This function allocates memory for a c-ares private ares_data struct -** for the specified ares_datatype, initializes c-ares private fields -** and zero initializes those which later might be used from the public -** API. It returns an interior pointer which can be passed by c-ares -** functions to the calling application, and that must be free'ed using -** c-ares external API function ares_free_data(). -*/ - -void *ares_malloc_data(ares_datatype type) -{ - struct ares_data *ptr; - - ptr = malloc(sizeof(struct ares_data)); - if (!ptr) - return NULL; - - switch (type) - { - case ARES_DATATYPE_MX_REPLY: - ptr->data.mx_reply.next = NULL; - ptr->data.mx_reply.host = NULL; - ptr->data.mx_reply.priority = 0; - break; - - case ARES_DATATYPE_SRV_REPLY: - ptr->data.srv_reply.next = NULL; - ptr->data.srv_reply.host = NULL; - ptr->data.srv_reply.priority = 0; - ptr->data.srv_reply.weight = 0; - ptr->data.srv_reply.port = 0; - break; - - case ARES_DATATYPE_TXT_REPLY: - ptr->data.txt_reply.next = NULL; - ptr->data.txt_reply.txt = NULL; - ptr->data.txt_reply.length = 0; - break; - - case ARES_DATATYPE_ADDR_NODE: - ptr->data.addr_node.next = NULL; - ptr->data.addr_node.family = 0; - memset(&ptr->data.addr_node.addrV6, 0, - sizeof(ptr->data.addr_node.addrV6)); - break; - - default: - free(ptr); - return NULL; - } - - ptr->mark = ARES_DATATYPE_MARK; - ptr->type = type; - - return &ptr->data; -} - - -/* -** ares_get_datatype() - c-ares internal helper function. -** -** This function returns the ares_datatype of the data stored in a -** private ares_data struct when given the public API pointer. -*/ - -ares_datatype ares_get_datatype(void * dataptr) -{ - struct ares_data *ptr; - -#ifdef __INTEL_COMPILER -# pragma warning(push) -# pragma warning(disable:1684) - /* 1684: conversion from pointer to same-sized integral type */ -#endif - - ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); - -#ifdef __INTEL_COMPILER -# pragma warning(pop) -#endif - - if (ptr->mark == ARES_DATATYPE_MARK) - return ptr->type; - - return ARES_DATATYPE_UNKNOWN; -} diff --git a/deps/uv/c-ares/ares_data.h b/deps/uv/c-ares/ares_data.h deleted file mode 100644 index de1608be5b..0000000000 --- a/deps/uv/c-ares/ares_data.h +++ /dev/null @@ -1,65 +0,0 @@ - -/* Copyright (C) 2009-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -typedef enum { - ARES_DATATYPE_UNKNOWN = 1, /* unknown data type - introduced in 1.7.0 */ - ARES_DATATYPE_SRV_REPLY, /* struct ares_srv_reply - introduced in 1.7.0 */ - ARES_DATATYPE_TXT_REPLY, /* struct ares_txt_reply - introduced in 1.7.0 */ - ARES_DATATYPE_ADDR_NODE, /* struct ares_addr_node - introduced in 1.7.1 */ - ARES_DATATYPE_MX_REPLY, /* struct ares_mx_reply - introduced in 1.7.2 */ -#if 0 - ARES_DATATYPE_ADDR6TTL, /* struct ares_addrttl */ - ARES_DATATYPE_ADDRTTL, /* struct ares_addr6ttl */ - ARES_DATATYPE_HOSTENT, /* struct hostent */ - ARES_DATATYPE_OPTIONS, /* struct ares_options */ -#endif - ARES_DATATYPE_LAST /* not used - introduced in 1.7.0 */ -} ares_datatype; - -#define ARES_DATATYPE_MARK 0xbead - -/* - * ares_data struct definition is internal to c-ares and shall not - * be exposed by the public API in order to allow future changes - * and extensions to it without breaking ABI. This will be used - * internally by c-ares as the container of multiple types of data - * dynamically allocated for which a reference will be returned - * to the calling application. - * - * c-ares API functions returning a pointer to c-ares internally - * allocated data will actually be returning an interior pointer - * into this ares_data struct. - * - * All this is 'invisible' to the calling application, the only - * requirement is that this kind of data must be free'ed by the - * calling application using ares_free_data() with the pointer - * it has received from a previous c-ares function call. - */ - -struct ares_data { - ares_datatype type; /* Actual data type identifier. */ - unsigned int mark; /* Private ares_data signature. */ - union { - struct ares_txt_reply txt_reply; - struct ares_srv_reply srv_reply; - struct ares_addr_node addr_node; - struct ares_mx_reply mx_reply; - } data; -}; - -void *ares_malloc_data(ares_datatype type); - -ares_datatype ares_get_datatype(void * dataptr); diff --git a/deps/uv/c-ares/ares_destroy.c b/deps/uv/c-ares/ares_destroy.c deleted file mode 100644 index 5e274daeef..0000000000 --- a/deps/uv/c-ares/ares_destroy.c +++ /dev/null @@ -1,105 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2004-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include -#include -#include "ares.h" -#include "ares_private.h" - -void ares_destroy_options(struct ares_options *options) -{ - int i; - - if(options->servers) - free(options->servers); - for (i = 0; i < options->ndomains; i++) - free(options->domains[i]); - free(options->domains); - if(options->sortlist) - free(options->sortlist); - free(options->lookups); -} - -void ares_destroy(ares_channel channel) -{ - int i; - struct query *query; - struct list_node* list_head; - struct list_node* list_node; - - if (!channel) - return; - - list_head = &(channel->all_queries); - for (list_node = list_head->next; list_node != list_head; ) - { - query = list_node->data; - list_node = list_node->next; /* since we're deleting the query */ - query->callback(query->arg, ARES_EDESTRUCTION, 0, NULL, 0); - ares__free_query(query); - } -#ifndef NDEBUG - /* Freeing the query should remove it from all the lists in which it sits, - * so all query lists should be empty now. - */ - assert(ares__is_list_empty(&(channel->all_queries))); - for (i = 0; i < ARES_QID_TABLE_SIZE; i++) - { - assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); - } - for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) - { - assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); - } -#endif - - ares__destroy_servers_state(channel); - - if (channel->domains) { - for (i = 0; i < channel->ndomains; i++) - free(channel->domains[i]); - free(channel->domains); - } - - if(channel->sortlist) - free(channel->sortlist); - - if (channel->lookups) - free(channel->lookups); - - free(channel); -} - -void ares__destroy_servers_state(ares_channel channel) -{ - struct server_state *server; - int i; - - if (channel->servers) - { - for (i = 0; i < channel->nservers; i++) - { - server = &channel->servers[i]; - ares__close_sockets(channel, server); - assert(ares__is_list_empty(&server->queries_to_server)); - } - free(channel->servers); - channel->servers = NULL; - } - channel->nservers = -1; -} diff --git a/deps/uv/c-ares/ares_dns.h b/deps/uv/c-ares/ares_dns.h deleted file mode 100644 index 6893c024c8..0000000000 --- a/deps/uv/c-ares/ares_dns.h +++ /dev/null @@ -1,90 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#ifndef ARES__DNS_H -#define ARES__DNS_H - -#define DNS__16BIT(p) (((p)[0] << 8) | (p)[1]) -#define DNS__32BIT(p) (((p)[0] << 24) | ((p)[1] << 16) | \ - ((p)[2] << 8) | (p)[3]) - -#define DNS__SET16BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 8) & 0xff)), \ - ((p)[1] = (unsigned char)((v) & 0xff))) -#define DNS__SET32BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 24) & 0xff)), \ - ((p)[1] = (unsigned char)(((v) >> 16) & 0xff)), \ - ((p)[2] = (unsigned char)(((v) >> 8) & 0xff)), \ - ((p)[3] = (unsigned char)((v) & 0xff))) - -#if 0 -/* we cannot use this approach on systems where we can't access 16/32 bit - data on un-aligned addresses */ -#define DNS__16BIT(p) ntohs(*(unsigned short*)(p)) -#define DNS__32BIT(p) ntohl(*(unsigned long*)(p)) -#define DNS__SET16BIT(p, v) *(unsigned short*)(p) = htons(v) -#define DNS__SET32BIT(p, v) *(unsigned long*)(p) = htonl(v) -#endif - -/* Macros for parsing a DNS header */ -#define DNS_HEADER_QID(h) DNS__16BIT(h) -#define DNS_HEADER_QR(h) (((h)[2] >> 7) & 0x1) -#define DNS_HEADER_OPCODE(h) (((h)[2] >> 3) & 0xf) -#define DNS_HEADER_AA(h) (((h)[2] >> 2) & 0x1) -#define DNS_HEADER_TC(h) (((h)[2] >> 1) & 0x1) -#define DNS_HEADER_RD(h) ((h)[2] & 0x1) -#define DNS_HEADER_RA(h) (((h)[3] >> 7) & 0x1) -#define DNS_HEADER_Z(h) (((h)[3] >> 4) & 0x7) -#define DNS_HEADER_RCODE(h) ((h)[3] & 0xf) -#define DNS_HEADER_QDCOUNT(h) DNS__16BIT((h) + 4) -#define DNS_HEADER_ANCOUNT(h) DNS__16BIT((h) + 6) -#define DNS_HEADER_NSCOUNT(h) DNS__16BIT((h) + 8) -#define DNS_HEADER_ARCOUNT(h) DNS__16BIT((h) + 10) - -/* Macros for constructing a DNS header */ -#define DNS_HEADER_SET_QID(h, v) DNS__SET16BIT(h, v) -#define DNS_HEADER_SET_QR(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 7)) -#define DNS_HEADER_SET_OPCODE(h, v) ((h)[2] |= (unsigned char)(((v) & 0xf) << 3)) -#define DNS_HEADER_SET_AA(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 2)) -#define DNS_HEADER_SET_TC(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 1)) -#define DNS_HEADER_SET_RD(h, v) ((h)[2] |= (unsigned char)((v) & 0x1)) -#define DNS_HEADER_SET_RA(h, v) ((h)[3] |= (unsigned char)(((v) & 0x1) << 7)) -#define DNS_HEADER_SET_Z(h, v) ((h)[3] |= (unsigned char)(((v) & 0x7) << 4)) -#define DNS_HEADER_SET_RCODE(h, v) ((h)[3] |= (unsigned char)((v) & 0xf)) -#define DNS_HEADER_SET_QDCOUNT(h, v) DNS__SET16BIT((h) + 4, v) -#define DNS_HEADER_SET_ANCOUNT(h, v) DNS__SET16BIT((h) + 6, v) -#define DNS_HEADER_SET_NSCOUNT(h, v) DNS__SET16BIT((h) + 8, v) -#define DNS_HEADER_SET_ARCOUNT(h, v) DNS__SET16BIT((h) + 10, v) - -/* Macros for parsing the fixed part of a DNS question */ -#define DNS_QUESTION_TYPE(q) DNS__16BIT(q) -#define DNS_QUESTION_CLASS(q) DNS__16BIT((q) + 2) - -/* Macros for constructing the fixed part of a DNS question */ -#define DNS_QUESTION_SET_TYPE(q, v) DNS__SET16BIT(q, v) -#define DNS_QUESTION_SET_CLASS(q, v) DNS__SET16BIT((q) + 2, v) - -/* Macros for parsing the fixed part of a DNS resource record */ -#define DNS_RR_TYPE(r) DNS__16BIT(r) -#define DNS_RR_CLASS(r) DNS__16BIT((r) + 2) -#define DNS_RR_TTL(r) DNS__32BIT((r) + 4) -#define DNS_RR_LEN(r) DNS__16BIT((r) + 8) - -/* Macros for constructing the fixed part of a DNS resource record */ -#define DNS_RR_SET_TYPE(r) DNS__SET16BIT(r, v) -#define DNS_RR_SET_CLASS(r) DNS__SET16BIT((r) + 2, v) -#define DNS_RR_SET_TTL(r) DNS__SET32BIT((r) + 4, v) -#define DNS_RR_SET_LEN(r) DNS__SET16BIT((r) + 8, v) - -#endif /* ARES__DNS_H */ diff --git a/deps/uv/c-ares/ares_expand_name.c b/deps/uv/c-ares/ares_expand_name.c deleted file mode 100644 index 2af6b2ac40..0000000000 --- a/deps/uv/c-ares/ares_expand_name.c +++ /dev/null @@ -1,193 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include "ares.h" -#include "ares_private.h" /* for the memdebug */ - -static int name_length(const unsigned char *encoded, const unsigned char *abuf, - int alen); - -/* Expand an RFC1035-encoded domain name given by encoded. The - * containing message is given by abuf and alen. The result given by - * *s, which is set to a NUL-terminated allocated buffer. *enclen is - * set to the length of the encoded name (not the length of the - * expanded name; the goal is to tell the caller how many bytes to - * move forward to get past the encoded name). - * - * In the simple case, an encoded name is a series of labels, each - * composed of a one-byte length (limited to values between 0 and 63 - * inclusive) followed by the label contents. The name is terminated - * by a zero-length label. - * - * In the more complicated case, a label may be terminated by an - * indirection pointer, specified by two bytes with the high bits of - * the first byte (corresponding to INDIR_MASK) set to 11. With the - * two high bits of the first byte stripped off, the indirection - * pointer gives an offset from the beginning of the containing - * message with more labels to decode. Indirection can happen an - * arbitrary number of times, so we have to detect loops. - * - * Since the expanded name uses '.' as a label separator, we use - * backslashes to escape periods or backslashes in the expanded name. - */ - -int ares_expand_name(const unsigned char *encoded, const unsigned char *abuf, - int alen, char **s, long *enclen) -{ - int len, indir = 0; - char *q; - const unsigned char *p; - union { - ssize_t sig; - size_t uns; - } nlen; - - nlen.sig = name_length(encoded, abuf, alen); - if (nlen.sig < 0) - return ARES_EBADNAME; - - *s = malloc(nlen.uns + 1); - if (!*s) - return ARES_ENOMEM; - q = *s; - - if (nlen.uns == 0) { - /* RFC2181 says this should be ".": the root of the DNS tree. - * Since this function strips trailing dots though, it becomes "" - */ - q[0] = '\0'; - *enclen = 1; /* the caller should move one byte to get past this */ - return ARES_SUCCESS; - } - - /* No error-checking necessary; it was all done by name_length(). */ - p = encoded; - while (*p) - { - if ((*p & INDIR_MASK) == INDIR_MASK) - { - if (!indir) - { - *enclen = p + 2 - encoded; - indir = 1; - } - p = abuf + ((*p & ~INDIR_MASK) << 8 | *(p + 1)); - } - else - { - len = *p; - p++; - while (len--) - { - if (*p == '.' || *p == '\\') - *q++ = '\\'; - *q++ = *p; - p++; - } - *q++ = '.'; - } - } - if (!indir) - *enclen = p + 1 - encoded; - - /* Nuke the trailing period if we wrote one. */ - if (q > *s) - *(q - 1) = 0; - else - *q = 0; /* zero terminate */ - - return ARES_SUCCESS; -} - -/* Return the length of the expansion of an encoded domain name, or - * -1 if the encoding is invalid. - */ -static int name_length(const unsigned char *encoded, const unsigned char *abuf, - int alen) -{ - int n = 0, offset, indir = 0; - - /* Allow the caller to pass us abuf + alen and have us check for it. */ - if (encoded == abuf + alen) - return -1; - - while (*encoded) - { - if ((*encoded & INDIR_MASK) == INDIR_MASK) - { - /* Check the offset and go there. */ - if (encoded + 1 >= abuf + alen) - return -1; - offset = (*encoded & ~INDIR_MASK) << 8 | *(encoded + 1); - if (offset >= alen) - return -1; - encoded = abuf + offset; - - /* If we've seen more indirects than the message length, - * then there's a loop. - */ - if (++indir > alen) - return -1; - } - else - { - offset = *encoded; - if (encoded + offset + 1 >= abuf + alen) - return -1; - encoded++; - while (offset--) - { - n += (*encoded == '.' || *encoded == '\\') ? 2 : 1; - encoded++; - } - n++; - } - } - - /* If there were any labels at all, then the number of dots is one - * less than the number of labels, so subtract one. - */ - return (n) ? n - 1 : n; -} - -/* Like ares_expand_name but returns EBADRESP in case of invalid input. */ -int ares__expand_name_for_response(const unsigned char *encoded, - const unsigned char *abuf, int alen, - char **s, long *enclen) -{ - int status = ares_expand_name(encoded, abuf, alen, s, enclen); - if (status == ARES_EBADNAME) - status = ARES_EBADRESP; - return status; -} diff --git a/deps/uv/c-ares/ares_expand_string.c b/deps/uv/c-ares/ares_expand_string.c deleted file mode 100644 index f24cccf647..0000000000 --- a/deps/uv/c-ares/ares_expand_string.c +++ /dev/null @@ -1,75 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif - -#include -#include -#include "ares.h" -#include "ares_private.h" /* for the memdebug */ - -/* Simply decodes a length-encoded character string. The first byte of the - * input is the length of the string to be returned and the bytes thereafter - * are the characters of the string. The returned result will be NULL - * terminated. - */ -int ares_expand_string(const unsigned char *encoded, - const unsigned char *abuf, - int alen, - unsigned char **s, - long *enclen) -{ - unsigned char *q; - union { - ssize_t sig; - size_t uns; - } elen; - - if (encoded == abuf+alen) - return ARES_EBADSTR; - - elen.uns = *encoded; - if (encoded+elen.sig+1 > abuf+alen) - return ARES_EBADSTR; - - encoded++; - - *s = malloc(elen.uns+1); - if (*s == NULL) - return ARES_ENOMEM; - q = *s; - strncpy((char *)q, (char *)encoded, elen.uns); - q[elen.uns] = '\0'; - - *s = q; - - *enclen = (long)(elen.sig+1); - - return ARES_SUCCESS; -} - diff --git a/deps/uv/c-ares/ares_fds.c b/deps/uv/c-ares/ares_fds.c deleted file mode 100644 index b57be9287b..0000000000 --- a/deps/uv/c-ares/ares_fds.c +++ /dev/null @@ -1,62 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_TIME_H -#include -#endif - -#include "ares.h" -#include "ares_private.h" - -int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds) -{ - struct server_state *server; - ares_socket_t nfds; - int i; - - /* Are there any active queries? */ - int active_queries = !ares__is_list_empty(&(channel->all_queries)); - - nfds = 0; - for (i = 0; i < channel->nservers; i++) - { - server = &channel->servers[i]; - /* We only need to register interest in UDP sockets if we have - * outstanding queries. - */ - if (active_queries && server->udp_socket != ARES_SOCKET_BAD) - { - FD_SET(server->udp_socket, read_fds); - if (server->udp_socket >= nfds) - nfds = server->udp_socket + 1; - } - /* We always register for TCP events, because we want to know - * when the other side closes the connection, so we don't waste - * time trying to use a broken connection. - */ - if (server->tcp_socket != ARES_SOCKET_BAD) - { - FD_SET(server->tcp_socket, read_fds); - if (server->qhead) - FD_SET(server->tcp_socket, write_fds); - if (server->tcp_socket >= nfds) - nfds = server->tcp_socket + 1; - } - } - return (int)nfds; -} diff --git a/deps/uv/c-ares/ares_free_hostent.c b/deps/uv/c-ares/ares_free_hostent.c deleted file mode 100644 index b124560d86..0000000000 --- a/deps/uv/c-ares/ares_free_hostent.c +++ /dev/null @@ -1,39 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include - -#ifdef HAVE_NETDB_H -#include -#endif - -#include "ares.h" -#include "ares_private.h" /* for memdebug */ - -void ares_free_hostent(struct hostent *host) -{ - char **p; - - free((char *)(host->h_name)); - for (p = host->h_aliases; *p; p++) - free(*p); - free(host->h_aliases); - free(host->h_addr_list[0]); /* no matter if there is one or many entries, - there is only one malloc for all of them */ - free(host->h_addr_list); - free(host); -} diff --git a/deps/uv/c-ares/ares_free_string.c b/deps/uv/c-ares/ares_free_string.c deleted file mode 100644 index e0545c1d1a..0000000000 --- a/deps/uv/c-ares/ares_free_string.c +++ /dev/null @@ -1,25 +0,0 @@ - -/* Copyright 2000 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include -#include "ares.h" -#include "ares_private.h" - -void ares_free_string(void *str) -{ - free(str); -} diff --git a/deps/uv/c-ares/ares_gethostbyaddr.c b/deps/uv/c-ares/ares_gethostbyaddr.c deleted file mode 100644 index 0de2cf249f..0000000000 --- a/deps/uv/c-ares/ares_gethostbyaddr.c +++ /dev/null @@ -1,292 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include - -#include "ares.h" -#include "inet_net_pton.h" -#include "ares_private.h" - -#ifdef WATT32 -#undef WIN32 -#endif - -struct addr_query { - /* Arguments passed to ares_gethostbyaddr() */ - ares_channel channel; - struct ares_addr addr; - ares_host_callback callback; - void *arg; - - const char *remaining_lookups; - int timeouts; -}; - -static void next_lookup(struct addr_query *aquery); -static void addr_callback(void *arg, int status, int timeouts, - unsigned char *abuf, int alen); -static void end_aquery(struct addr_query *aquery, int status, - struct hostent *host); -static int file_lookup(struct ares_addr *addr, struct hostent **host); -static void ptr_rr_name(char *name, const struct ares_addr *addr); - -void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen, - int family, ares_host_callback callback, void *arg) -{ - struct addr_query *aquery; - - if (family != AF_INET && family != AF_INET6) - { - callback(arg, ARES_ENOTIMP, 0, NULL); - return; - } - - if ((family == AF_INET && addrlen != sizeof(aquery->addr.addrV4)) || - (family == AF_INET6 && addrlen != sizeof(aquery->addr.addrV6))) - { - callback(arg, ARES_ENOTIMP, 0, NULL); - return; - } - - aquery = malloc(sizeof(struct addr_query)); - if (!aquery) - { - callback(arg, ARES_ENOMEM, 0, NULL); - return; - } - aquery->channel = channel; - if (family == AF_INET) - memcpy(&aquery->addr.addrV4, addr, sizeof(aquery->addr.addrV4)); - else - memcpy(&aquery->addr.addrV6, addr, sizeof(aquery->addr.addrV6)); - aquery->addr.family = family; - aquery->callback = callback; - aquery->arg = arg; - aquery->remaining_lookups = channel->lookups; - aquery->timeouts = 0; - - next_lookup(aquery); -} - -static void next_lookup(struct addr_query *aquery) -{ - const char *p; - char name[128]; - int status; - struct hostent *host; - - for (p = aquery->remaining_lookups; *p; p++) - { - switch (*p) - { - case 'b': - ptr_rr_name(name, &aquery->addr); - aquery->remaining_lookups = p + 1; - ares_query(aquery->channel, name, C_IN, T_PTR, addr_callback, - aquery); - return; - case 'f': - status = file_lookup(&aquery->addr, &host); - - /* this status check below previously checked for !ARES_ENOTFOUND, - but we should not assume that this single error code is the one - that can occur, as that is in fact no longer the case */ - if (status == ARES_SUCCESS) - { - end_aquery(aquery, status, host); - return; - } - break; - } - } - end_aquery(aquery, ARES_ENOTFOUND, NULL); -} - -static void addr_callback(void *arg, int status, int timeouts, - unsigned char *abuf, int alen) -{ - struct addr_query *aquery = (struct addr_query *) arg; - struct hostent *host; - size_t addrlen; - - aquery->timeouts += timeouts; - if (status == ARES_SUCCESS) - { - if (aquery->addr.family == AF_INET) - { - addrlen = sizeof(aquery->addr.addrV4); - status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV4, - (int)addrlen, AF_INET, &host); - } - else - { - addrlen = sizeof(aquery->addr.addrV6); - status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV6, - (int)addrlen, AF_INET6, &host); - } - end_aquery(aquery, status, host); - } - else if (status == ARES_EDESTRUCTION) - end_aquery(aquery, status, NULL); - else - next_lookup(aquery); -} - -static void end_aquery(struct addr_query *aquery, int status, - struct hostent *host) -{ - aquery->callback(aquery->arg, status, aquery->timeouts, host); - if (host) - ares_free_hostent(host); - free(aquery); -} - -static int file_lookup(struct ares_addr *addr, struct hostent **host) -{ - FILE *fp; - int status; - int error; - -#ifdef WIN32 - char PATH_HOSTS[MAX_PATH]; - if (IS_NT()) { - char tmp[MAX_PATH]; - HKEY hkeyHosts; - - if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, - &hkeyHosts) == ERROR_SUCCESS) - { - DWORD dwLength = MAX_PATH; - RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, - &dwLength); - ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); - RegCloseKey(hkeyHosts); - } - } - else - GetWindowsDirectory(PATH_HOSTS, MAX_PATH); - - strcat(PATH_HOSTS, WIN_PATH_HOSTS); - -#elif defined(WATT32) - extern const char *_w32_GetHostsFile (void); - const char *PATH_HOSTS = _w32_GetHostsFile(); - - if (!PATH_HOSTS) - return ARES_ENOTFOUND; -#endif - - fp = fopen(PATH_HOSTS, "r"); - if (!fp) - { - error = ERRNO; - switch(error) - { - case ENOENT: - case ESRCH: - return ARES_ENOTFOUND; - default: - DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", - error, strerror(error))); - DEBUGF(fprintf(stderr, "Error opening file: %s\n", - PATH_HOSTS)); - *host = NULL; - return ARES_EFILE; - } - } - while ((status = ares__get_hostent(fp, addr->family, host)) == ARES_SUCCESS) - { - if (addr->family != (*host)->h_addrtype) - { - ares_free_hostent(*host); - continue; - } - if (addr->family == AF_INET) - { - if (memcmp((*host)->h_addr, &addr->addrV4, - sizeof(addr->addrV4)) == 0) - break; - } - else if (addr->family == AF_INET6) - { - if (memcmp((*host)->h_addr, &addr->addrV6, - sizeof(addr->addrV6)) == 0) - break; - } - ares_free_hostent(*host); - } - fclose(fp); - if (status == ARES_EOF) - status = ARES_ENOTFOUND; - if (status != ARES_SUCCESS) - *host = NULL; - return status; -} - -static void ptr_rr_name(char *name, const struct ares_addr *addr) -{ - if (addr->family == AF_INET) - { - unsigned long laddr = ntohl(addr->addrV4.s_addr); - unsigned long a1 = (laddr >> 24UL) & 0xFFUL; - unsigned long a2 = (laddr >> 16UL) & 0xFFUL; - unsigned long a3 = (laddr >> 8UL) & 0xFFUL; - unsigned long a4 = laddr & 0xFFUL; - sprintf(name, "%lu.%lu.%lu.%lu.in-addr.arpa", a4, a3, a2, a1); - } - else - { - unsigned char *bytes = (unsigned char *)&addr->addrV6; - /* There are too many arguments to do this in one line using - * minimally C89-compliant compilers */ - sprintf(name, - "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.", - bytes[15]&0xf, bytes[15] >> 4, bytes[14]&0xf, bytes[14] >> 4, - bytes[13]&0xf, bytes[13] >> 4, bytes[12]&0xf, bytes[12] >> 4, - bytes[11]&0xf, bytes[11] >> 4, bytes[10]&0xf, bytes[10] >> 4, - bytes[9]&0xf, bytes[9] >> 4, bytes[8]&0xf, bytes[8] >> 4); - sprintf(name+strlen(name), - "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa", - bytes[7]&0xf, bytes[7] >> 4, bytes[6]&0xf, bytes[6] >> 4, - bytes[5]&0xf, bytes[5] >> 4, bytes[4]&0xf, bytes[4] >> 4, - bytes[3]&0xf, bytes[3] >> 4, bytes[2]&0xf, bytes[2] >> 4, - bytes[1]&0xf, bytes[1] >> 4, bytes[0]&0xf, bytes[0] >> 4); - } -} diff --git a/deps/uv/c-ares/ares_gethostbyname.c b/deps/uv/c-ares/ares_gethostbyname.c deleted file mode 100644 index 4469ffee23..0000000000 --- a/deps/uv/c-ares/ares_gethostbyname.c +++ /dev/null @@ -1,515 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include -#include -#ifdef HAVE_STRINGS_H -#include -#endif - -#include "ares.h" -#include "inet_net_pton.h" -#include "bitncmp.h" -#include "ares_private.h" - -#ifdef WATT32 -#undef WIN32 -#endif - -struct host_query { - /* Arguments passed to ares_gethostbyname() */ - ares_channel channel; - char *name; - ares_host_callback callback; - void *arg; - int sent_family; /* this family is what was is being used */ - int want_family; /* this family is what is asked for in the API */ - const char *remaining_lookups; - int timeouts; -}; - -static void next_lookup(struct host_query *hquery, int status_code); -static void host_callback(void *arg, int status, int timeouts, - unsigned char *abuf, int alen); -static void end_hquery(struct host_query *hquery, int status, - struct hostent *host); -static int fake_hostent(const char *name, int family, - ares_host_callback callback, void *arg); -static int file_lookup(const char *name, int family, struct hostent **host); -static void sort_addresses(struct hostent *host, - const struct apattern *sortlist, int nsort); -static void sort6_addresses(struct hostent *host, - const struct apattern *sortlist, int nsort); -static int get_address_index(const struct in_addr *addr, - const struct apattern *sortlist, int nsort); -static int get6_address_index(const struct ares_in6_addr *addr, - const struct apattern *sortlist, int nsort); - -void ares_gethostbyname(ares_channel channel, const char *name, int family, - ares_host_callback callback, void *arg) -{ - struct host_query *hquery; - - /* Right now we only know how to look up Internet addresses - and unspec - means try both basically. */ - switch (family) { - case AF_INET: - case AF_INET6: - case AF_UNSPEC: - break; - default: - callback(arg, ARES_ENOTIMP, 0, NULL); - return; - } - - if (fake_hostent(name, family, callback, arg)) - return; - - /* Allocate and fill in the host query structure. */ - hquery = malloc(sizeof(struct host_query)); - if (!hquery) - { - callback(arg, ARES_ENOMEM, 0, NULL); - return; - } - hquery->channel = channel; - hquery->name = strdup(name); - hquery->want_family = family; - hquery->sent_family = -1; /* nothing is sent yet */ - if (!hquery->name) { - free(hquery); - callback(arg, ARES_ENOMEM, 0, NULL); - return; - } - hquery->callback = callback; - hquery->arg = arg; - hquery->remaining_lookups = channel->lookups; - hquery->timeouts = 0; - - /* Start performing lookups according to channel->lookups. */ - next_lookup(hquery, ARES_ECONNREFUSED /* initial error code */); -} - -static void next_lookup(struct host_query *hquery, int status_code) -{ - const char *p; - struct hostent *host; - int status = status_code; - - for (p = hquery->remaining_lookups; *p; p++) - { - switch (*p) - { - case 'b': - /* DNS lookup */ - hquery->remaining_lookups = p + 1; - if ((hquery->want_family == AF_INET6) || - (hquery->want_family == AF_UNSPEC)) { - /* if inet6 or unspec, start out with AAAA */ - hquery->sent_family = AF_INET6; - ares_search(hquery->channel, hquery->name, C_IN, T_AAAA, - host_callback, hquery); - } - else { - hquery->sent_family = AF_INET; - ares_search(hquery->channel, hquery->name, C_IN, T_A, - host_callback, hquery); - } - return; - - case 'f': - /* Host file lookup */ - status = file_lookup(hquery->name, hquery->want_family, &host); - - /* this status check below previously checked for !ARES_ENOTFOUND, - but we should not assume that this single error code is the one - that can occur, as that is in fact no longer the case */ - if (status == ARES_SUCCESS) - { - end_hquery(hquery, status, host); - return; - } - status = status_code; /* Use original status code */ - break; - } - } - end_hquery(hquery, status, NULL); -} - -static void host_callback(void *arg, int status, int timeouts, - unsigned char *abuf, int alen) -{ - struct host_query *hquery = (struct host_query *) arg; - ares_channel channel = hquery->channel; - struct hostent *host = NULL; - - hquery->timeouts += timeouts; - if (status == ARES_SUCCESS) - { - if (hquery->sent_family == AF_INET) - { - status = ares_parse_a_reply(abuf, alen, &host, NULL, NULL); - if (host && channel->nsort) - sort_addresses(host, channel->sortlist, channel->nsort); - } - else if (hquery->sent_family == AF_INET6) - { - status = ares_parse_aaaa_reply(abuf, alen, &host, NULL, NULL); - if (status == ARES_ENODATA || status == ARES_EBADRESP) { - /* The query returned something but either there were no AAAA - records (e.g. just CNAME) or the response was malformed. Try - looking up A instead. We should possibly limit this - attempt-next logic to AF_UNSPEC lookups only. */ - hquery->sent_family = AF_INET; - ares_search(hquery->channel, hquery->name, C_IN, T_A, - host_callback, hquery); - return; - } - if (host && channel->nsort) - sort6_addresses(host, channel->sortlist, channel->nsort); - } - end_hquery(hquery, status, host); - } - else if ((status == ARES_ENODATA || status == ARES_EBADRESP || - status == ARES_ETIMEOUT) && hquery->sent_family == AF_INET6) - { - /* The AAAA query yielded no useful result. Now look up an A instead. - We should possibly limit this attempt-next logic to AF_UNSPEC lookups - only. */ - hquery->sent_family = AF_INET; - ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback, - hquery); - } - else if (status == ARES_EDESTRUCTION) - end_hquery(hquery, status, NULL); - else - next_lookup(hquery, status); -} - -static void end_hquery(struct host_query *hquery, int status, - struct hostent *host) -{ - hquery->callback(hquery->arg, status, hquery->timeouts, host); - if (host) - ares_free_hostent(host); - free(hquery->name); - free(hquery); -} - -/* If the name looks like an IP address, fake up a host entry, end the - * query immediately, and return true. Otherwise return false. - */ -static int fake_hostent(const char *name, int family, - ares_host_callback callback, void *arg) -{ - struct hostent hostent; - char *aliases[1] = { NULL }; - char *addrs[2]; - int result = 0; - struct in_addr in; - struct ares_in6_addr in6; - - if (family == AF_INET || family == AF_INET6) - { - /* It only looks like an IP address if it's all numbers and dots. */ - int numdots = 0, valid = 1; - const char *p; - for (p = name; *p; p++) - { - if (!ISDIGIT(*p) && *p != '.') { - valid = 0; - break; - } else if (*p == '.') { - numdots++; - } - } - - /* if we don't have 3 dots, it is illegal - * (although inet_addr doesn't think so). - */ - if (numdots != 3 || !valid) - result = 0; - else - result = ((in.s_addr = inet_addr(name)) == INADDR_NONE ? 0 : 1); - - if (result) - family = AF_INET; - } - if (family == AF_INET6) - result = (ares_inet_pton(AF_INET6, name, &in6) < 1 ? 0 : 1); - - if (!result) - return 0; - - if (family == AF_INET) - { - hostent.h_length = (int)sizeof(struct in_addr); - addrs[0] = (char *)∈ - } - else if (family == AF_INET6) - { - hostent.h_length = (int)sizeof(struct ares_in6_addr); - addrs[0] = (char *)&in6; - } - /* Duplicate the name, to avoid a constness violation. */ - hostent.h_name = strdup(name); - if (!hostent.h_name) - { - callback(arg, ARES_ENOMEM, 0, NULL); - return 1; - } - - /* Fill in the rest of the host structure and terminate the query. */ - addrs[1] = NULL; - hostent.h_aliases = aliases; - hostent.h_addrtype = family; - hostent.h_addr_list = addrs; - callback(arg, ARES_SUCCESS, 0, &hostent); - - free((char *)(hostent.h_name)); - return 1; -} - -/* This is an API method */ -int ares_gethostbyname_file(ares_channel channel, const char *name, - int family, struct hostent **host) -{ - int result; - - /* We only take the channel to ensure that ares_init() been called. */ - if(channel == NULL) - { - /* Anything will do, really. This seems fine, and is consistent with - other error cases. */ - *host = NULL; - return ARES_ENOTFOUND; - } - - /* Just chain to the internal implementation we use here; it's exactly - * what we want. - */ - result = file_lookup(name, family, host); - if(result != ARES_SUCCESS) - { - /* We guarantee a NULL hostent on failure. */ - *host = NULL; - } - return result; -} - -static int file_lookup(const char *name, int family, struct hostent **host) -{ - FILE *fp; - char **alias; - int status; - int error; - -#ifdef WIN32 - char PATH_HOSTS[MAX_PATH]; - if (IS_NT()) { - char tmp[MAX_PATH]; - HKEY hkeyHosts; - - if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, - &hkeyHosts) == ERROR_SUCCESS) - { - DWORD dwLength = MAX_PATH; - RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, - &dwLength); - ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); - RegCloseKey(hkeyHosts); - } - } - else - GetWindowsDirectory(PATH_HOSTS, MAX_PATH); - - strcat(PATH_HOSTS, WIN_PATH_HOSTS); - -#elif defined(WATT32) - extern const char *_w32_GetHostsFile (void); - const char *PATH_HOSTS = _w32_GetHostsFile(); - - if (!PATH_HOSTS) - return ARES_ENOTFOUND; -#endif - - fp = fopen(PATH_HOSTS, "r"); - if (!fp) - { - error = ERRNO; - switch(error) - { - case ENOENT: - case ESRCH: - return ARES_ENOTFOUND; - default: - DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", - error, strerror(error))); - DEBUGF(fprintf(stderr, "Error opening file: %s\n", - PATH_HOSTS)); - *host = NULL; - return ARES_EFILE; - } - } - while ((status = ares__get_hostent(fp, family, host)) == ARES_SUCCESS) - { - if (strcasecmp((*host)->h_name, name) == 0) - break; - for (alias = (*host)->h_aliases; *alias; alias++) - { - if (strcasecmp(*alias, name) == 0) - break; - } - if (*alias) - break; - ares_free_hostent(*host); - } - fclose(fp); - if (status == ARES_EOF) - status = ARES_ENOTFOUND; - if (status != ARES_SUCCESS) - *host = NULL; - return status; -} - -static void sort_addresses(struct hostent *host, - const struct apattern *sortlist, int nsort) -{ - struct in_addr a1, a2; - int i1, i2, ind1, ind2; - - /* This is a simple insertion sort, not optimized at all. i1 walks - * through the address list, with the loop invariant that everything - * to the left of i1 is sorted. In the loop body, the value at i1 is moved - * back through the list (via i2) until it is in sorted order. - */ - for (i1 = 0; host->h_addr_list[i1]; i1++) - { - memcpy(&a1, host->h_addr_list[i1], sizeof(struct in_addr)); - ind1 = get_address_index(&a1, sortlist, nsort); - for (i2 = i1 - 1; i2 >= 0; i2--) - { - memcpy(&a2, host->h_addr_list[i2], sizeof(struct in_addr)); - ind2 = get_address_index(&a2, sortlist, nsort); - if (ind2 <= ind1) - break; - memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in_addr)); - } - memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in_addr)); - } -} - -/* Find the first entry in sortlist which matches addr. Return nsort - * if none of them match. - */ -static int get_address_index(const struct in_addr *addr, - const struct apattern *sortlist, - int nsort) -{ - int i; - - for (i = 0; i < nsort; i++) - { - if (sortlist[i].family != AF_INET) - continue; - if (sortlist[i].type == PATTERN_MASK) - { - if ((addr->s_addr & sortlist[i].mask.addr4.s_addr) - == sortlist[i].addrV4.s_addr) - break; - } - else - { - if (!ares_bitncmp(&addr->s_addr, &sortlist[i].addrV4.s_addr, - sortlist[i].mask.bits)) - break; - } - } - return i; -} - -static void sort6_addresses(struct hostent *host, - const struct apattern *sortlist, int nsort) -{ - struct ares_in6_addr a1, a2; - int i1, i2, ind1, ind2; - - /* This is a simple insertion sort, not optimized at all. i1 walks - * through the address list, with the loop invariant that everything - * to the left of i1 is sorted. In the loop body, the value at i1 is moved - * back through the list (via i2) until it is in sorted order. - */ - for (i1 = 0; host->h_addr_list[i1]; i1++) - { - memcpy(&a1, host->h_addr_list[i1], sizeof(struct ares_in6_addr)); - ind1 = get6_address_index(&a1, sortlist, nsort); - for (i2 = i1 - 1; i2 >= 0; i2--) - { - memcpy(&a2, host->h_addr_list[i2], sizeof(struct ares_in6_addr)); - ind2 = get6_address_index(&a2, sortlist, nsort); - if (ind2 <= ind1) - break; - memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct ares_in6_addr)); - } - memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct ares_in6_addr)); - } -} - -/* Find the first entry in sortlist which matches addr. Return nsort - * if none of them match. - */ -static int get6_address_index(const struct ares_in6_addr *addr, - const struct apattern *sortlist, - int nsort) -{ - int i; - - for (i = 0; i < nsort; i++) - { - if (sortlist[i].family != AF_INET6) - continue; - if (!ares_bitncmp(addr, - &sortlist[i].addrV6, - sortlist[i].mask.bits)) - break; - } - return i; -} diff --git a/deps/uv/c-ares/ares_getnameinfo.c b/deps/uv/c-ares/ares_getnameinfo.c deleted file mode 100644 index b6236862ed..0000000000 --- a/deps/uv/c-ares/ares_getnameinfo.c +++ /dev/null @@ -1,426 +0,0 @@ - -/* Copyright 2005 by Dominick Meglio - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ -#include "ares_setup.h" - -#ifdef HAVE_GETSERVBYPORT_R -# if !defined(GETSERVBYPORT_R_ARGS) || \ - (GETSERVBYPORT_R_ARGS < 4) || (GETSERVBYPORT_R_ARGS > 6) -# error "you MUST specifiy a valid number of arguments for getservbyport_r" -# endif -#endif - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#ifdef HAVE_NET_IF_H -#include -#endif - -#ifdef HAVE_UNISTD_H -#include -#endif - -#include -#include -#include - -#include "ares.h" -#include "ares_ipv6.h" -#include "inet_ntop.h" -#include "ares_private.h" - -struct nameinfo_query { - ares_nameinfo_callback callback; - void *arg; - union { - struct sockaddr_in addr4; - struct sockaddr_in6 addr6; - } addr; - int family; - int flags; - int timeouts; -}; - -#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID -#define IPBUFSIZ \ - (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") + IF_NAMESIZE) -#else -#define IPBUFSIZ \ - (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")) -#endif - -static void nameinfo_callback(void *arg, int status, int timeouts, - struct hostent *host); -static char *lookup_service(unsigned short port, int flags, - char *buf, size_t buflen); -#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID -static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int scopeid, - char *buf, size_t buflen); -#endif -static char *ares_striendstr(const char *s1, const char *s2); - -void ares_getnameinfo(ares_channel channel, const struct sockaddr *sa, - ares_socklen_t salen, - int flags, ares_nameinfo_callback callback, void *arg) -{ - struct sockaddr_in *addr = NULL; - struct sockaddr_in6 *addr6 = NULL; - struct nameinfo_query *niquery; - unsigned int port = 0; - - /* Validate socket address family and length */ - if ((sa->sa_family == AF_INET) && - (salen == sizeof(struct sockaddr_in))) - { - addr = (struct sockaddr_in *)sa; - port = addr->sin_port; - } - else if ((sa->sa_family == AF_INET6) && - (salen == sizeof(struct sockaddr_in6))) - { - addr6 = (struct sockaddr_in6 *)sa; - port = addr6->sin6_port; - } - else - { - callback(arg, ARES_ENOTIMP, 0, NULL, NULL); - return; - } - - /* If neither, assume they want a host */ - if (!(flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) - flags |= ARES_NI_LOOKUPHOST; - - /* All they want is a service, no need for DNS */ - if ((flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) - { - char buf[33], *service; - - service = lookup_service((unsigned short)(port & 0xffff), - flags, buf, sizeof(buf)); - callback(arg, ARES_SUCCESS, 0, NULL, service); - return; - } - - /* They want a host lookup */ - if ((flags & ARES_NI_LOOKUPHOST)) - { - /* A numeric host can be handled without DNS */ - if ((flags & ARES_NI_NUMERICHOST)) - { - char ipbuf[IPBUFSIZ]; - char srvbuf[33]; - char *service = NULL; - ipbuf[0] = 0; - - /* Specifying not to lookup a host, but then saying a host - * is required has to be illegal. - */ - if (flags & ARES_NI_NAMEREQD) - { - callback(arg, ARES_EBADFLAGS, 0, NULL, NULL); - return; - } - if (salen == sizeof(struct sockaddr_in6)) - { - ares_inet_ntop(AF_INET6, &addr6->sin6_addr, ipbuf, IPBUFSIZ); - /* If the system supports scope IDs, use it */ -#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID - append_scopeid(addr6, flags, ipbuf, sizeof(ipbuf)); -#endif - } - else - { - ares_inet_ntop(AF_INET, &addr->sin_addr, ipbuf, IPBUFSIZ); - } - /* They also want a service */ - if (flags & ARES_NI_LOOKUPSERVICE) - service = lookup_service((unsigned short)(port & 0xffff), - flags, srvbuf, sizeof(srvbuf)); - callback(arg, ARES_SUCCESS, 0, ipbuf, service); - return; - } - /* This is where a DNS lookup becomes necessary */ - else - { - niquery = malloc(sizeof(struct nameinfo_query)); - if (!niquery) - { - callback(arg, ARES_ENOMEM, 0, NULL, NULL); - return; - } - niquery->callback = callback; - niquery->arg = arg; - niquery->flags = flags; - niquery->timeouts = 0; - if (sa->sa_family == AF_INET) - { - niquery->family = AF_INET; - memcpy(&niquery->addr.addr4, addr, sizeof(addr)); - ares_gethostbyaddr(channel, &addr->sin_addr, - sizeof(struct in_addr), AF_INET, - nameinfo_callback, niquery); - } - else - { - niquery->family = AF_INET6; - memcpy(&niquery->addr.addr6, addr6, sizeof(addr6)); - ares_gethostbyaddr(channel, &addr6->sin6_addr, - sizeof(struct ares_in6_addr), AF_INET6, - nameinfo_callback, niquery); - } - } - } -} - -static void nameinfo_callback(void *arg, int status, int timeouts, - struct hostent *host) -{ - struct nameinfo_query *niquery = (struct nameinfo_query *) arg; - char srvbuf[33]; - char *service = NULL; - - niquery->timeouts += timeouts; - if (status == ARES_SUCCESS) - { - /* They want a service too */ - if (niquery->flags & ARES_NI_LOOKUPSERVICE) - { - if (niquery->family == AF_INET) - service = lookup_service(niquery->addr.addr4.sin_port, - niquery->flags, srvbuf, sizeof(srvbuf)); - else - service = lookup_service(niquery->addr.addr6.sin6_port, - niquery->flags, srvbuf, sizeof(srvbuf)); - } - /* NOFQDN means we have to strip off the domain name portion. We do - this by determining our own domain name, then searching the string - for this domain name and removing it. - */ -#ifdef HAVE_GETHOSTNAME - if (niquery->flags & ARES_NI_NOFQDN) - { - char buf[255]; - char *domain; - gethostname(buf, 255); - if ((domain = strchr(buf, '.')) != NULL) - { - char *end = ares_striendstr(host->h_name, domain); - if (end) - *end = 0; - } - } -#endif - niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, - (char *)(host->h_name), - service); - free(niquery); - return; - } - /* We couldn't find the host, but it's OK, we can use the IP */ - else if (status == ARES_ENOTFOUND && !(niquery->flags & ARES_NI_NAMEREQD)) - { - char ipbuf[IPBUFSIZ]; - if (niquery->family == AF_INET) - ares_inet_ntop(AF_INET, &niquery->addr.addr4.sin_addr, ipbuf, - IPBUFSIZ); - else - { - ares_inet_ntop(AF_INET6, &niquery->addr.addr6.sin6_addr, ipbuf, - IPBUFSIZ); -#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID - append_scopeid(&niquery->addr.addr6, niquery->flags, ipbuf, - sizeof(ipbuf)); -#endif - } - /* They want a service too */ - if (niquery->flags & ARES_NI_LOOKUPSERVICE) - { - if (niquery->family == AF_INET) - service = lookup_service(niquery->addr.addr4.sin_port, - niquery->flags, srvbuf, sizeof(srvbuf)); - else - service = lookup_service(niquery->addr.addr6.sin6_port, - niquery->flags, srvbuf, sizeof(srvbuf)); - } - niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, ipbuf, - service); - free(niquery); - return; - } - niquery->callback(niquery->arg, status, niquery->timeouts, NULL, NULL); - free(niquery); -} - -static char *lookup_service(unsigned short port, int flags, - char *buf, size_t buflen) -{ - const char *proto; - struct servent *sep; -#ifdef HAVE_GETSERVBYPORT_R - struct servent se; -#endif - char tmpbuf[4096]; - - if (port) - { - if (flags & ARES_NI_NUMERICSERV) - sep = NULL; - else - { - if (flags & ARES_NI_UDP) - proto = "udp"; - else if (flags & ARES_NI_SCTP) - proto = "sctp"; - else if (flags & ARES_NI_DCCP) - proto = "dccp"; - else - proto = "tcp"; -#ifdef HAVE_GETSERVBYPORT_R - sep = &se; - memset(tmpbuf, 0, sizeof(tmpbuf)); -#if GETSERVBYPORT_R_ARGS == 6 - if (getservbyport_r(port, proto, &se, (void *)tmpbuf, - sizeof(tmpbuf), &sep) != 0) - sep = NULL; -#elif GETSERVBYPORT_R_ARGS == 5 - sep = getservbyport_r(port, proto, &se, (void *)tmpbuf, - sizeof(tmpbuf)); -#elif GETSERVBYPORT_R_ARGS == 4 - if (getservbyport_r(port, proto, &se, (void *)tmpbuf) != 0) - sep = NULL; -#else - /* Lets just hope the OS uses TLS! */ - sep = getservbyport(port, proto); -#endif -#else - /* Lets just hope the OS uses TLS! */ -#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) - sep = getservbyport(port, (char*)proto); -#else - sep = getservbyport(port, proto); -#endif -#endif - } - if (sep && sep->s_name) - /* get service name */ - strcpy(tmpbuf, sep->s_name); - else - /* get port as a string */ - sprintf(tmpbuf, "%u", (unsigned int)ntohs(port)); - if (strlen(tmpbuf) < buflen) - /* return it if buffer big enough */ - strcpy(buf, tmpbuf); - else - /* avoid reusing previous one */ - buf[0] = '\0'; - return buf; - } - buf[0] = '\0'; - return NULL; -} - -#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID -static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int flags, - char *buf, size_t buflen) -{ -#ifdef HAVE_IF_INDEXTONAME - int is_ll, is_mcll; -#endif - static const char fmt_u[] = "%u"; - static const char fmt_lu[] = "%lu"; - char tmpbuf[IF_NAMESIZE + 2]; - size_t bufl; - const char *fmt = (sizeof(addr6->sin6_scope_id) > sizeof(unsigned int))? - fmt_lu:fmt_u; - - tmpbuf[0] = '%'; - -#ifdef HAVE_IF_INDEXTONAME - is_ll = IN6_IS_ADDR_LINKLOCAL(&addr6->sin6_addr); - is_mcll = IN6_IS_ADDR_MC_LINKLOCAL(&addr6->sin6_addr); - if ((flags & ARES_NI_NUMERICSCOPE) || - (!is_ll && !is_mcll)) - { - sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); - } - else - { - if (if_indextoname(addr6->sin6_scope_id, &tmpbuf[1]) == NULL) - sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); - } -#else - sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); - (void) flags; -#endif - tmpbuf[IF_NAMESIZE + 1] = '\0'; - bufl = strlen(buf); - - if(bufl + strlen(tmpbuf) < buflen) - /* only append the scopeid string if it fits in the target buffer */ - strcpy(&buf[bufl], tmpbuf); -} -#endif - -/* Determines if s1 ends with the string in s2 (case-insensitive) */ -static char *ares_striendstr(const char *s1, const char *s2) -{ - const char *c1, *c2, *c1_begin; - int lo1, lo2; - size_t s1_len = strlen(s1), s2_len = strlen(s2); - - /* If the substr is longer than the full str, it can't match */ - if (s2_len > s1_len) - return NULL; - - /* Jump to the end of s1 minus the length of s2 */ - c1_begin = s1+s1_len-s2_len; - c1 = (const char *)c1_begin; - c2 = s2; - while (c2 < s2+s2_len) - { - lo1 = TOLOWER(*c1); - lo2 = TOLOWER(*c2); - if (lo1 != lo2) - return NULL; - else - { - c1++; - c2++; - } - } - if (c2 == c1 && c2 == NULL) - return (char *)c1_begin; - return NULL; -} diff --git a/deps/uv/c-ares/ares_getopt.c b/deps/uv/c-ares/ares_getopt.c deleted file mode 100644 index 1e02d08686..0000000000 --- a/deps/uv/c-ares/ares_getopt.c +++ /dev/null @@ -1,122 +0,0 @@ -/* - * Original file name getopt.c Initial import into the c-ares source tree - * on 2007-04-11. Lifted from version 5.2 of the 'Open Mash' project with - * the modified BSD license, BSD license without the advertising clause. - * - */ - -/* - * getopt.c -- - * - * Standard UNIX getopt function. Code is from BSD. - * - * Copyright (c) 1987-2001 The Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * A. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * B. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * C. Neither the names of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from this - * software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS - * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -/* #if !defined(lint) - * static char sccsid[] = "@(#)getopt.c 8.2 (Berkeley) 4/2/94"; - * #endif - */ - -#include -#include -#include -#include "ares_getopt.h" - -int opterr = 1, /* if error message should be printed */ - optind = 1; /* index into parent argv vector */ -int optopt = 0; /* character checked for validity */ -static int optreset; /* reset getopt */ -char *optarg; /* argument associated with option */ - -#define BADCH (int)'?' -#define BADARG (int)':' -#define EMSG (char *)"" - -/* - * ares_getopt -- - * Parse argc/argv argument vector. - */ -int -ares_getopt(int nargc, char * const nargv[], const char *ostr) -{ - static char *place = EMSG; /* option letter processing */ - char *oli; /* option letter list index */ - - if (optreset || !*place) { /* update scanning pointer */ - optreset = 0; - if (optind >= nargc || *(place = nargv[optind]) != '-') { - place = EMSG; - return (EOF); - } - if (place[1] && *++place == '-') { /* found "--" */ - ++optind; - place = EMSG; - return (EOF); - } - } /* option letter okay? */ - if ((optopt = (int)*place++) == (int)':' || - (oli = strchr(ostr, optopt)) == NULL) { - /* - * if the user didn't specify '-' as an option, - * assume it means EOF. - */ - if (optopt == (int)'-') - return (EOF); - if (!*place) - ++optind; - if (opterr && *ostr != ':') - (void)fprintf(stderr, - "%s: illegal option -- %c\n", __FILE__, optopt); - return (BADCH); - } - if (*++oli != ':') { /* don't need argument */ - optarg = NULL; - if (!*place) - ++optind; - } - else { /* need an argument */ - if (*place) /* no white space */ - optarg = place; - else if (nargc <= ++optind) { /* no arg */ - place = EMSG; - if (*ostr == ':') - return (BADARG); - if (opterr) - (void)fprintf(stderr, - "%s: option requires an argument -- %c\n", - __FILE__, optopt); - return (BADCH); - } - else /* white space */ - optarg = nargv[optind]; - place = EMSG; - ++optind; - } - return (optopt); /* dump back option letter */ -} diff --git a/deps/uv/c-ares/ares_getopt.h b/deps/uv/c-ares/ares_getopt.h deleted file mode 100644 index 63acb3b423..0000000000 --- a/deps/uv/c-ares/ares_getopt.h +++ /dev/null @@ -1,53 +0,0 @@ -#ifndef ARES_GETOPT_H -#define ARES_GETOPT_H - -/* - * Copyright (c) 1987-2001 The Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * A. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * B. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * C. Neither the names of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from this - * software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS - * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - - -int ares_getopt(int nargc, char * const nargv[], const char *ostr); - -#undef optarg -#undef optind -#undef opterr -#undef optopt -#undef optreset - -#define optarg ares_optarg -#define optind ares_optind -#define opterr ares_opterr -#define optopt ares_optopt -#define optreset ares_optreset - -extern char *optarg; -extern int optind; -extern int opterr; -extern int optopt; - -#endif /* ARES_GETOPT_H */ diff --git a/deps/uv/c-ares/ares_getsock.c b/deps/uv/c-ares/ares_getsock.c deleted file mode 100644 index 72e467f2e6..0000000000 --- a/deps/uv/c-ares/ares_getsock.c +++ /dev/null @@ -1,72 +0,0 @@ - -/* Copyright (C) 2005 - 2010, Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. M.I.T. makes no representations about the - * suitability of this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_TIME_H -#include -#endif - -#include "ares.h" -#include "ares_private.h" - -int ares_getsock(ares_channel channel, - ares_socket_t *socks, - int numsocks) /* size of the 'socks' array */ -{ - struct server_state *server; - int i; - int sockindex=0; - int bitmap = 0; - unsigned int setbits = 0xffffffff; - - /* Are there any active queries? */ - int active_queries = !ares__is_list_empty(&(channel->all_queries)); - - for (i = 0; - (i < channel->nservers) && (sockindex < ARES_GETSOCK_MAXNUM); - i++) - { - server = &channel->servers[i]; - /* We only need to register interest in UDP sockets if we have - * outstanding queries. - */ - if (active_queries && server->udp_socket != ARES_SOCKET_BAD) - { - if(sockindex >= numsocks) - break; - socks[sockindex] = server->udp_socket; - bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); - sockindex++; - } - /* We always register for TCP events, because we want to know - * when the other side closes the connection, so we don't waste - * time trying to use a broken connection. - */ - if (server->tcp_socket != ARES_SOCKET_BAD) - { - if(sockindex >= numsocks) - break; - socks[sockindex] = server->tcp_socket; - bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); - - if (server->qhead && active_queries) - /* then the tcp socket is also writable! */ - bitmap |= ARES_GETSOCK_WRITABLE(setbits, sockindex); - - sockindex++; - } - } - return bitmap; -} diff --git a/deps/uv/c-ares/ares_init.c b/deps/uv/c-ares/ares_init.c deleted file mode 100644 index d7954a06b2..0000000000 --- a/deps/uv/c-ares/ares_init.c +++ /dev/null @@ -1,1665 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2007-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef USE_WINSOCK -#include -#endif - -#ifdef HAVE_SYS_PARAM_H -#include -#endif - -#ifdef HAVE_SYS_TIME_H -#include -#endif - -#ifdef HAVE_SYS_SOCKET_H -#include -#endif - -#ifdef HAVE_NETINET_IN_H -#include -#endif - -#ifdef HAVE_NETDB_H -#include -#endif - -#ifdef HAVE_ARPA_INET_H -#include -#endif - -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#ifdef HAVE_UNISTD_H -#include -#endif - -#include -#include -#include -#include -#include -#include -#include "ares.h" -#include "inet_net_pton.h" -#include "ares_library_init.h" -#include "ares_nowarn.h" -#include "ares_private.h" - -#ifdef ANDROID -#include -#endif - -#ifdef WATT32 -#undef WIN32 /* Redefined in MingW/MSVC headers */ -#endif - -static int init_by_options(ares_channel channel, const struct ares_options *options, - int optmask); -static int init_by_environment(ares_channel channel); -static int init_by_resolv_conf(ares_channel channel); -static int init_by_defaults(ares_channel channel); - -#ifndef WATT32 -static int config_nameserver(struct server_state **servers, int *nservers, - char *str); -#endif -static int set_search(ares_channel channel, const char *str); -static int set_options(ares_channel channel, const char *str); -static const char *try_option(const char *p, const char *q, const char *opt); -static int init_id_key(rc4_key* key,int key_data_len); - -#if !defined(WIN32) && !defined(WATT32) -static int sortlist_alloc(struct apattern **sortlist, int *nsort, struct apattern *pat); -static int ip_addr(const char *s, ssize_t len, struct in_addr *addr); -static void natural_mask(struct apattern *pat); -static int config_domain(ares_channel channel, char *str); -static int config_lookup(ares_channel channel, const char *str, - const char *bindch, const char *filech); -static int config_sortlist(struct apattern **sortlist, int *nsort, - const char *str); -static char *try_config(char *s, const char *opt); -#endif - -#define ARES_CONFIG_CHECK(x) (x->lookups && x->nsort > -1 && \ - x->nservers > -1 && \ - x->ndomains > -1 && \ - x->ndots > -1 && x->timeout > -1 && \ - x->tries > -1) - -int ares_init(ares_channel *channelptr) -{ - return ares_init_options(channelptr, NULL, 0); -} - -int ares_init_options(ares_channel *channelptr, struct ares_options *options, - int optmask) -{ - ares_channel channel; - int i; - int status = ARES_SUCCESS; - struct timeval now; - -#ifdef CURLDEBUG - const char *env = getenv("CARES_MEMDEBUG"); - - if (env) - curl_memdebug(env); - env = getenv("CARES_MEMLIMIT"); - if (env) { - char *endptr; - long num = strtol(env, &endptr, 10); - if((endptr != env) && (endptr == env + strlen(env)) && (num > 0)) - curl_memlimit(num); - } -#endif - - if (ares_library_initialized() != ARES_SUCCESS) - return ARES_ENOTINITIALIZED; - - channel = malloc(sizeof(struct ares_channeldata)); - if (!channel) { - *channelptr = NULL; - return ARES_ENOMEM; - } - - now = ares__tvnow(); - - /* Set everything to distinguished values so we know they haven't - * been set yet. - */ - channel->flags = -1; - channel->timeout = -1; - channel->tries = -1; - channel->ndots = -1; - channel->rotate = -1; - channel->udp_port = -1; - channel->tcp_port = -1; - channel->socket_send_buffer_size = -1; - channel->socket_receive_buffer_size = -1; - channel->nservers = -1; - channel->ndomains = -1; - channel->nsort = -1; - channel->tcp_connection_generation = 0; - channel->lookups = NULL; - channel->domains = NULL; - channel->sortlist = NULL; - channel->servers = NULL; - channel->sock_state_cb = NULL; - channel->sock_state_cb_data = NULL; - channel->sock_create_cb = NULL; - channel->sock_create_cb_data = NULL; - - channel->last_server = 0; - channel->last_timeout_processed = (time_t)now.tv_sec; - - memset(&channel->local_dev_name, 0, sizeof(channel->local_dev_name)); - channel->local_ip4 = 0; - memset(&channel->local_ip6, 0, sizeof(channel->local_ip6)); - - /* Initialize our lists of queries */ - ares__init_list_head(&(channel->all_queries)); - for (i = 0; i < ARES_QID_TABLE_SIZE; i++) - { - ares__init_list_head(&(channel->queries_by_qid[i])); - } - for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) - { - ares__init_list_head(&(channel->queries_by_timeout[i])); - } - - /* Initialize configuration by each of the four sources, from highest - * precedence to lowest. - */ - - if (status == ARES_SUCCESS) { - status = init_by_options(channel, options, optmask); - if (status != ARES_SUCCESS) - DEBUGF(fprintf(stderr, "Error: init_by_options failed: %s\n", - ares_strerror(status))); - } - if (status == ARES_SUCCESS) { - status = init_by_environment(channel); - if (status != ARES_SUCCESS) - DEBUGF(fprintf(stderr, "Error: init_by_environment failed: %s\n", - ares_strerror(status))); - } - if (status == ARES_SUCCESS) { - status = init_by_resolv_conf(channel); - if (status != ARES_SUCCESS) - DEBUGF(fprintf(stderr, "Error: init_by_resolv_conf failed: %s\n", - ares_strerror(status))); - } - - /* - * No matter what failed or succeeded, seed defaults to provide - * useful behavior for things that we missed. - */ - status = init_by_defaults(channel); - if (status != ARES_SUCCESS) - DEBUGF(fprintf(stderr, "Error: init_by_defaults failed: %s\n", - ares_strerror(status))); - - /* Generate random key */ - - if (status == ARES_SUCCESS) { - status = init_id_key(&channel->id_key, ARES_ID_KEY_LEN); - if (status == ARES_SUCCESS) - channel->next_id = ares__generate_new_id(&channel->id_key); - else - DEBUGF(fprintf(stderr, "Error: init_id_key failed: %s\n", - ares_strerror(status))); - } - - if (status != ARES_SUCCESS) - { - /* Something failed; clean up memory we may have allocated. */ - if (channel->servers) - free(channel->servers); - if (channel->domains) - { - for (i = 0; i < channel->ndomains; i++) - free(channel->domains[i]); - free(channel->domains); - } - if (channel->sortlist) - free(channel->sortlist); - if(channel->lookups) - free(channel->lookups); - free(channel); - return status; - } - - /* Trim to one server if ARES_FLAG_PRIMARY is set. */ - if ((channel->flags & ARES_FLAG_PRIMARY) && channel->nservers > 1) - channel->nservers = 1; - - ares__init_servers_state(channel); - - *channelptr = channel; - return ARES_SUCCESS; -} - -/* ares_dup() duplicates a channel handle with all its options and returns a - new channel handle */ -int ares_dup(ares_channel *dest, ares_channel src) -{ - struct ares_options opts; - struct ares_addr_node *servers; - int ipv6_nservers = 0; - int i, rc; - int optmask; - - *dest = NULL; /* in case of failure return NULL explicitly */ - - /* First get the options supported by the old ares_save_options() function, - which is most of them */ - rc = ares_save_options(src, &opts, &optmask); - if(rc) - return rc; - - /* Then create the new channel with those options */ - rc = ares_init_options(dest, &opts, optmask); - - /* destroy the options copy to not leak any memory */ - ares_destroy_options(&opts); - - if(rc) - return rc; - - /* Now clone the options that ares_save_options() doesn't support. */ - (*dest)->sock_create_cb = src->sock_create_cb; - (*dest)->sock_create_cb_data = src->sock_create_cb_data; - - strncpy((*dest)->local_dev_name, src->local_dev_name, sizeof(src->local_dev_name)); - (*dest)->local_ip4 = src->local_ip4; - memcpy((*dest)->local_ip6, src->local_ip6, sizeof(src->local_ip6)); - - /* Full name server cloning required when not all are IPv4 */ - for (i = 0; i < src->nservers; i++) - { - if (src->servers[i].addr.family != AF_INET) { - ipv6_nservers++; - break; - } - } - if (ipv6_nservers) { - rc = ares_get_servers(src, &servers); - if (rc != ARES_SUCCESS) - return rc; - rc = ares_set_servers(*dest, servers); - ares_free_data(servers); - if (rc != ARES_SUCCESS) - return rc; - } - - return ARES_SUCCESS; /* everything went fine */ -} - -/* Save options from initialized channel */ -int ares_save_options(ares_channel channel, struct ares_options *options, - int *optmask) -{ - int i, j; - int ipv4_nservers = 0; - - /* Zero everything out */ - memset(options, 0, sizeof(struct ares_options)); - - if (!ARES_CONFIG_CHECK(channel)) - return ARES_ENODATA; - - /* Traditionally the optmask wasn't saved in the channel struct so it was - recreated here. ROTATE is the first option that has no struct field of - its own in the public config struct */ - (*optmask) = (ARES_OPT_FLAGS|ARES_OPT_TRIES|ARES_OPT_NDOTS| - ARES_OPT_UDP_PORT|ARES_OPT_TCP_PORT|ARES_OPT_SOCK_STATE_CB| - ARES_OPT_SERVERS|ARES_OPT_DOMAINS|ARES_OPT_LOOKUPS| - ARES_OPT_SORTLIST|ARES_OPT_TIMEOUTMS) | - (channel->optmask & ARES_OPT_ROTATE); - - /* Copy easy stuff */ - options->flags = channel->flags; - - /* We return full millisecond resolution but that's only because we don't - set the ARES_OPT_TIMEOUT anymore, only the new ARES_OPT_TIMEOUTMS */ - options->timeout = channel->timeout; - options->tries = channel->tries; - options->ndots = channel->ndots; - options->udp_port = (unsigned short)channel->udp_port; - options->tcp_port = (unsigned short)channel->tcp_port; - options->sock_state_cb = channel->sock_state_cb; - options->sock_state_cb_data = channel->sock_state_cb_data; - - /* Copy IPv4 servers */ - if (channel->nservers) { - for (i = 0; i < channel->nservers; i++) - { - if (channel->servers[i].addr.family == AF_INET) - ipv4_nservers++; - } - if (ipv4_nservers) { - options->servers = malloc(ipv4_nservers * sizeof(struct server_state)); - if (!options->servers) - return ARES_ENOMEM; - for (i = j = 0; i < channel->nservers; i++) - { - if (channel->servers[i].addr.family == AF_INET) - memcpy(&options->servers[j++], - &channel->servers[i].addr.addrV4, - sizeof(channel->servers[i].addr.addrV4)); - } - } - } - options->nservers = ipv4_nservers; - - /* copy domains */ - if (channel->ndomains) { - options->domains = malloc(channel->ndomains * sizeof(char *)); - if (!options->domains) - return ARES_ENOMEM; - - for (i = 0; i < channel->ndomains; i++) - { - options->ndomains = i; - options->domains[i] = strdup(channel->domains[i]); - if (!options->domains[i]) - return ARES_ENOMEM; - } - } - options->ndomains = channel->ndomains; - - /* copy lookups */ - if (channel->lookups) { - options->lookups = strdup(channel->lookups); - if (!options->lookups && channel->lookups) - return ARES_ENOMEM; - } - - /* copy sortlist */ - if (channel->nsort) { - options->sortlist = malloc(channel->nsort * sizeof(struct apattern)); - if (!options->sortlist) - return ARES_ENOMEM; - for (i = 0; i < channel->nsort; i++) - options->sortlist[i] = channel->sortlist[i]; - } - options->nsort = channel->nsort; - - return ARES_SUCCESS; -} - -static int init_by_options(ares_channel channel, - const struct ares_options *options, - int optmask) -{ - int i; - - /* Easy stuff. */ - if ((optmask & ARES_OPT_FLAGS) && channel->flags == -1) - channel->flags = options->flags; - if ((optmask & ARES_OPT_TIMEOUTMS) && channel->timeout == -1) - channel->timeout = options->timeout; - else if ((optmask & ARES_OPT_TIMEOUT) && channel->timeout == -1) - channel->timeout = options->timeout * 1000; - if ((optmask & ARES_OPT_TRIES) && channel->tries == -1) - channel->tries = options->tries; - if ((optmask & ARES_OPT_NDOTS) && channel->ndots == -1) - channel->ndots = options->ndots; - if ((optmask & ARES_OPT_ROTATE) && channel->rotate == -1) - channel->rotate = 1; - if ((optmask & ARES_OPT_UDP_PORT) && channel->udp_port == -1) - channel->udp_port = options->udp_port; - if ((optmask & ARES_OPT_TCP_PORT) && channel->tcp_port == -1) - channel->tcp_port = options->tcp_port; - if ((optmask & ARES_OPT_SOCK_STATE_CB) && channel->sock_state_cb == NULL) - { - channel->sock_state_cb = options->sock_state_cb; - channel->sock_state_cb_data = options->sock_state_cb_data; - } - if ((optmask & ARES_OPT_SOCK_SNDBUF) - && channel->socket_send_buffer_size == -1) - channel->socket_send_buffer_size = options->socket_send_buffer_size; - if ((optmask & ARES_OPT_SOCK_RCVBUF) - && channel->socket_receive_buffer_size == -1) - channel->socket_receive_buffer_size = options->socket_receive_buffer_size; - - /* Copy the IPv4 servers, if given. */ - if ((optmask & ARES_OPT_SERVERS) && channel->nservers == -1) - { - /* Avoid zero size allocations at any cost */ - if (options->nservers > 0) - { - channel->servers = - malloc(options->nservers * sizeof(struct server_state)); - if (!channel->servers) - return ARES_ENOMEM; - for (i = 0; i < options->nservers; i++) - { - channel->servers[i].addr.family = AF_INET; - memcpy(&channel->servers[i].addr.addrV4, - &options->servers[i], - sizeof(channel->servers[i].addr.addrV4)); - } - } - channel->nservers = options->nservers; - } - - /* Copy the domains, if given. Keep channel->ndomains consistent so - * we can clean up in case of error. - */ - if ((optmask & ARES_OPT_DOMAINS) && channel->ndomains == -1) - { - /* Avoid zero size allocations at any cost */ - if (options->ndomains > 0) - { - channel->domains = malloc(options->ndomains * sizeof(char *)); - if (!channel->domains) - return ARES_ENOMEM; - for (i = 0; i < options->ndomains; i++) - { - channel->ndomains = i; - channel->domains[i] = strdup(options->domains[i]); - if (!channel->domains[i]) - return ARES_ENOMEM; - } - } - channel->ndomains = options->ndomains; - } - - /* Set lookups, if given. */ - if ((optmask & ARES_OPT_LOOKUPS) && !channel->lookups) - { - channel->lookups = strdup(options->lookups); - if (!channel->lookups) - return ARES_ENOMEM; - } - - /* copy sortlist */ - if ((optmask & ARES_OPT_SORTLIST) && (channel->nsort == -1) && - (options->nsort>0)) { - channel->sortlist = malloc(options->nsort * sizeof(struct apattern)); - if (!channel->sortlist) - return ARES_ENOMEM; - for (i = 0; i < options->nsort; i++) - channel->sortlist[i] = options->sortlist[i]; - channel->nsort = options->nsort; - } - - channel->optmask = optmask; - - return ARES_SUCCESS; -} - -static int init_by_environment(ares_channel channel) -{ - const char *localdomain, *res_options; - int status; - - localdomain = getenv("LOCALDOMAIN"); - if (localdomain && channel->ndomains == -1) - { - status = set_search(channel, localdomain); - if (status != ARES_SUCCESS) - return status; - } - - res_options = getenv("RES_OPTIONS"); - if (res_options) - { - status = set_options(channel, res_options); - if (status != ARES_SUCCESS) - return status; - } - - return ARES_SUCCESS; -} - -#ifdef WIN32 -/* - * Warning: returns a dynamically allocated buffer, the user MUST - * use free() if the function returns 1 - */ -static int get_res_nt(HKEY hKey, const char *subkey, char **obuf) -{ - /* Test for the size we need */ - DWORD size = 0; - int result; - - result = RegQueryValueEx(hKey, subkey, 0, NULL, NULL, &size); - if ((result != ERROR_SUCCESS && result != ERROR_MORE_DATA) || !size) - return 0; - *obuf = malloc(size+1); - if (!*obuf) - return 0; - - if (RegQueryValueEx(hKey, subkey, 0, NULL, - (LPBYTE)*obuf, &size) != ERROR_SUCCESS) - { - free(*obuf); - return 0; - } - if (size == 1) - { - free(*obuf); - return 0; - } - return 1; -} - -static int get_res_interfaces_nt(HKEY hKey, const char *subkey, char **obuf) -{ - char enumbuf[39]; /* GUIDs are 38 chars + 1 for NULL */ - DWORD enum_size = 39; - int idx = 0; - HKEY hVal; - - while (RegEnumKeyEx(hKey, idx++, enumbuf, &enum_size, 0, - NULL, NULL, NULL) != ERROR_NO_MORE_ITEMS) - { - int rc; - - enum_size = 39; - if (RegOpenKeyEx(hKey, enumbuf, 0, KEY_QUERY_VALUE, &hVal) != - ERROR_SUCCESS) - continue; - rc = get_res_nt(hVal, subkey, obuf); - RegCloseKey(hVal); - if (rc) - return 1; - } - return 0; -} - -static int get_iphlpapi_dns_info (char *ret_buf, size_t ret_size) -{ - FIXED_INFO *fi, *newfi; - DWORD size = sizeof (*fi); - IP_ADDR_STRING *ipAddr; - int i, count = 0; - int debug = 0; - size_t ip_size = sizeof("255.255.255.255,")-1; - size_t left = ret_size; - char *ret = ret_buf; - HRESULT res; - - fi = malloc(size); - if (!fi) - return 0; - - res = (*ares_fpGetNetworkParams) (fi, &size); - if ((res != ERROR_BUFFER_OVERFLOW) && (res != ERROR_SUCCESS)) - goto quit; - - newfi = realloc(fi, size); - if (!newfi) - goto quit; - - fi = newfi; - res = (*ares_fpGetNetworkParams) (fi, &size); - if (res != ERROR_SUCCESS) - goto quit; - - if (debug) - { - printf ("Host Name: %s\n", fi->HostName); - printf ("Domain Name: %s\n", fi->DomainName); - printf ("DNS Servers:\n" - " %s (primary)\n", fi->DnsServerList.IpAddress.String); - } - if (strlen(fi->DnsServerList.IpAddress.String) > 0 && - inet_addr(fi->DnsServerList.IpAddress.String) != INADDR_NONE && - left > ip_size) - { - ret += sprintf (ret, "%s,", fi->DnsServerList.IpAddress.String); - left -= ret - ret_buf; - count++; - } - - for (i = 0, ipAddr = fi->DnsServerList.Next; ipAddr && left > ip_size; - ipAddr = ipAddr->Next, i++) - { - if (inet_addr(ipAddr->IpAddress.String) != INADDR_NONE) - { - ret += sprintf (ret, "%s,", ipAddr->IpAddress.String); - left -= ret - ret_buf; - count++; - } - if (debug) - printf (" %s (secondary %d)\n", ipAddr->IpAddress.String, i+1); - } - -quit: - if (fi) - free(fi); - - if (debug && left <= ip_size) - printf ("Too many nameservers. Truncating to %d addressess", count); - if (ret > ret_buf) - ret[-1] = '\0'; - return count; -} -#endif - -static int init_by_resolv_conf(ares_channel channel) -{ -#ifndef WATT32 - char *line = NULL; -#endif - int status = -1, nservers = 0, nsort = 0; - struct server_state *servers = NULL; - struct apattern *sortlist = NULL; - -#ifdef WIN32 - - /* - NameServer info via IPHLPAPI (IP helper API): - GetNetworkParams() should be the trusted source for this. - Available in Win-98/2000 and later. If that fail, fall-back to - registry information. - - NameServer Registry: - - On Windows 9X, the DNS server can be found in: -HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP\NameServer - - On Windows NT/2000/XP/2003: -HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\NameServer - or -HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer - or -HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ -NameServer - or -HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ -DhcpNameServer - */ - - HKEY mykey; - HKEY subkey; - DWORD data_type; - DWORD bytes; - DWORD result; - char buf[256]; - - if (channel->nservers > -1) /* don't override ARES_OPT_SERVER */ - return ARES_SUCCESS; - - if (get_iphlpapi_dns_info(buf,sizeof(buf)) > 0) - { - status = config_nameserver(&servers, &nservers, buf); - if (status == ARES_SUCCESS) - goto okay; - } - - if (IS_NT()) - { - if (RegOpenKeyEx( - HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, - KEY_READ, &mykey - ) == ERROR_SUCCESS) - { - RegOpenKeyEx(mykey, "Interfaces", 0, - KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &subkey); - if (get_res_nt(mykey, NAMESERVER, &line)) - { - status = config_nameserver(&servers, &nservers, line); - free(line); - } - else if (get_res_nt(mykey, DHCPNAMESERVER, &line)) - { - status = config_nameserver(&servers, &nservers, line); - free(line); - } - /* Try the interfaces */ - else if (get_res_interfaces_nt(subkey, NAMESERVER, &line)) - { - status = config_nameserver(&servers, &nservers, line); - free(line); - } - else if (get_res_interfaces_nt(subkey, DHCPNAMESERVER, &line)) - { - status = config_nameserver(&servers, &nservers, line); - free(line); - } - RegCloseKey(subkey); - RegCloseKey(mykey); - } - } - else - { - if (RegOpenKeyEx( - HKEY_LOCAL_MACHINE, WIN_NS_9X, 0, - KEY_READ, &mykey - ) == ERROR_SUCCESS) - { - if ((result = RegQueryValueEx( - mykey, NAMESERVER, NULL, &data_type, - NULL, &bytes - ) - ) == ERROR_SUCCESS || - result == ERROR_MORE_DATA) - { - if (bytes) - { - line = malloc(bytes+1); - if (RegQueryValueEx(mykey, NAMESERVER, NULL, &data_type, - (unsigned char *)line, &bytes) == - ERROR_SUCCESS) - { - status = config_nameserver(&servers, &nservers, line); - } - free(line); - } - } - } - RegCloseKey(mykey); - } - - if (status == ARES_SUCCESS) - status = ARES_EOF; - else - /* Catch the case when all the above checks fail (which happens when there - is no network card or the cable is unplugged) */ - status = ARES_EFILE; - -#elif defined(__riscos__) - - /* Under RISC OS, name servers are listed in the - system variable Inet$Resolvers, space separated. */ - - line = getenv("Inet$Resolvers"); - status = ARES_EOF; - if (line) { - char *resolvers = strdup(line), *pos, *space; - - if (!resolvers) - return ARES_ENOMEM; - - pos = resolvers; - do { - space = strchr(pos, ' '); - if (space) - *space = '\0'; - status = config_nameserver(&servers, &nservers, pos); - if (status != ARES_SUCCESS) - break; - pos = space + 1; - } while (space); - - if (status == ARES_SUCCESS) - status = ARES_EOF; - - free(resolvers); - } - -#elif defined(WATT32) - int i; - - sock_init(); - for (i = 0; def_nameservers[i]; i++) - ; - if (i == 0) - return ARES_SUCCESS; /* use localhost DNS server */ - - nservers = i; - servers = calloc(i, sizeof(struct server_state)); - if (!servers) - return ARES_ENOMEM; - - for (i = 0; def_nameservers[i]; i++) - servers[i].addr.addrV4.s_addr = htonl(def_nameservers[i]); - status = ARES_EOF; - -#elif defined(ANDROID) - char value[PROP_VALUE_MAX]=""; - __system_property_get("net.dns1", value); - status = config_nameserver(&servers, &nservers, value); - if (status == ARES_SUCCESS) - status = ARES_EOF; -#else - { - char *p; - FILE *fp; - size_t linesize; - int error; - - /* Don't read resolv.conf and friends if we don't have to */ - if (ARES_CONFIG_CHECK(channel)) - return ARES_SUCCESS; - - fp = fopen(PATH_RESOLV_CONF, "r"); - if (fp) { - while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) - { - if ((p = try_config(line, "domain"))) - status = config_domain(channel, p); - else if ((p = try_config(line, "lookup")) && !channel->lookups) - status = config_lookup(channel, p, "bind", "file"); - else if ((p = try_config(line, "search"))) - status = set_search(channel, p); - else if ((p = try_config(line, "nameserver")) && channel->nservers == -1) - status = config_nameserver(&servers, &nservers, p); - else if ((p = try_config(line, "sortlist")) && channel->nsort == -1) - status = config_sortlist(&sortlist, &nsort, p); - else if ((p = try_config(line, "options"))) - status = set_options(channel, p); - else - status = ARES_SUCCESS; - if (status != ARES_SUCCESS) - break; - } - fclose(fp); - } - else { - error = ERRNO; - switch(error) { - case ENOENT: - case ESRCH: - status = ARES_EOF; - break; - default: - DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", - error, strerror(error))); - DEBUGF(fprintf(stderr, "Error opening file: %s\n", PATH_RESOLV_CONF)); - status = ARES_EFILE; - } - } - - if ((status == ARES_EOF) && (!channel->lookups)) { - /* Many systems (Solaris, Linux, BSD's) use nsswitch.conf */ - fp = fopen("/etc/nsswitch.conf", "r"); - if (fp) { - while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) - { - if ((p = try_config(line, "hosts:")) && !channel->lookups) - status = config_lookup(channel, p, "dns", "files"); - } - fclose(fp); - } - else { - error = ERRNO; - switch(error) { - case ENOENT: - case ESRCH: - status = ARES_EOF; - break; - default: - DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", - error, strerror(error))); - DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/nsswitch.conf")); - status = ARES_EFILE; - } - } - } - - if ((status == ARES_EOF) && (!channel->lookups)) { - /* Linux / GNU libc 2.x and possibly others have host.conf */ - fp = fopen("/etc/host.conf", "r"); - if (fp) { - while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) - { - if ((p = try_config(line, "order")) && !channel->lookups) - status = config_lookup(channel, p, "bind", "hosts"); - } - fclose(fp); - } - else { - error = ERRNO; - switch(error) { - case ENOENT: - case ESRCH: - status = ARES_EOF; - break; - default: - DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", - error, strerror(error))); - DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/host.conf")); - status = ARES_EFILE; - } - } - } - - if ((status == ARES_EOF) && (!channel->lookups)) { - /* Tru64 uses /etc/svc.conf */ - fp = fopen("/etc/svc.conf", "r"); - if (fp) { - while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) - { - if ((p = try_config(line, "hosts=")) && !channel->lookups) - status = config_lookup(channel, p, "bind", "local"); - } - fclose(fp); - } - else { - error = ERRNO; - switch(error) { - case ENOENT: - case ESRCH: - status = ARES_EOF; - break; - default: - DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", - error, strerror(error))); - DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/svc.conf")); - status = ARES_EFILE; - } - } - } - - if(line) - free(line); - } - -#endif - - /* Handle errors. */ - if (status != ARES_EOF) - { - if (servers != NULL) - free(servers); - if (sortlist != NULL) - free(sortlist); - return status; - } - - /* If we got any name server entries, fill them in. */ -#ifdef WIN32 -okay: -#endif - if (servers) - { - channel->servers = servers; - channel->nservers = nservers; - } - - /* If we got any sortlist entries, fill them in. */ - if (sortlist) - { - channel->sortlist = sortlist; - channel->nsort = nsort; - } - - return ARES_SUCCESS; -} - -static int init_by_defaults(ares_channel channel) -{ - char *hostname = NULL; - int rc = ARES_SUCCESS; -#ifdef HAVE_GETHOSTNAME - char *dot; -#endif - - if (channel->flags == -1) - channel->flags = 0; - if (channel->timeout == -1) - channel->timeout = DEFAULT_TIMEOUT; - if (channel->tries == -1) - channel->tries = DEFAULT_TRIES; - if (channel->ndots == -1) - channel->ndots = 1; - if (channel->rotate == -1) - channel->rotate = 0; - if (channel->udp_port == -1) - channel->udp_port = htons(NAMESERVER_PORT); - if (channel->tcp_port == -1) - channel->tcp_port = htons(NAMESERVER_PORT); - - if (channel->nservers == -1) { - /* If nobody specified servers, try a local named. */ - channel->servers = malloc(sizeof(struct server_state)); - if (!channel->servers) { - rc = ARES_ENOMEM; - goto error; - } - channel->servers[0].addr.family = AF_INET; - channel->servers[0].addr.addrV4.s_addr = htonl(INADDR_LOOPBACK); - channel->nservers = 1; - } - -#ifdef ENAMETOOLONG -#define toolong(x) (x == -1) && ((ENAMETOOLONG == errno) || (EINVAL == errno)) -#else -#define toolong(x) (x == -1) && (EINVAL == errno) -#endif - - if (channel->ndomains == -1) { - /* Derive a default domain search list from the kernel hostname, - * or set it to empty if the hostname isn't helpful. - */ - size_t len = 64; - int res; - channel->ndomains = 0; /* default to none */ - -#ifdef HAVE_GETHOSTNAME - hostname = malloc(len); - if(!hostname) { - rc = ARES_ENOMEM; - goto error; - } - - do { - res = gethostname(hostname, len); - - if(toolong(res)) { - char *p; - len *= 2; - p = realloc(hostname, len); - if(!p) { - rc = ARES_ENOMEM; - goto error; - } - hostname = p; - continue; - } - else if(res) { - rc = ARES_EBADNAME; - goto error; - } - - } while(0); - - dot = strchr(hostname, '.'); - if (dot) { - /* a dot was found */ - channel->domains = malloc(sizeof(char *)); - if (!channel->domains) { - rc = ARES_ENOMEM; - goto error; - } - channel->domains[0] = strdup(dot + 1); - if (!channel->domains[0]) { - rc = ARES_ENOMEM; - goto error; - } - channel->ndomains = 1; - } -#endif - } - - if (channel->nsort == -1) { - channel->sortlist = NULL; - channel->nsort = 0; - } - - if (!channel->lookups) { - channel->lookups = strdup("fb"); - if (!channel->lookups) - rc = ARES_ENOMEM; - } - - error: - if(rc) { - if(channel->servers) - free(channel->servers); - - if(channel->domains && channel->domains[0]) - free(channel->domains[0]); - if(channel->domains) - free(channel->domains); - if(channel->lookups) - free(channel->lookups); - } - - if(hostname) - free(hostname); - - return rc; -} - -#if !defined(WIN32) && !defined(WATT32) -static int config_domain(ares_channel channel, char *str) -{ - char *q; - - /* Set a single search domain. */ - q = str; - while (*q && !ISSPACE(*q)) - q++; - *q = '\0'; - return set_search(channel, str); -} - -#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER == 910) && \ - defined(__OPTIMIZE__) && defined(__unix__) && defined(__i386__) - /* workaround icc 9.1 optimizer issue */ -# define vqualifier volatile -#else -# define vqualifier -#endif - -static int config_lookup(ares_channel channel, const char *str, - const char *bindch, const char *filech) -{ - char lookups[3], *l; - const char *vqualifier p; - - /* Set the lookup order. Only the first letter of each work - * is relevant, and it has to be "b" for DNS or "f" for the - * host file. Ignore everything else. - */ - l = lookups; - p = str; - while (*p) - { - if ((*p == *bindch || *p == *filech) && l < lookups + 2) { - if (*p == *bindch) *l++ = 'b'; - else *l++ = 'f'; - } - while (*p && !ISSPACE(*p) && (*p != ',')) - p++; - while (*p && (ISSPACE(*p) || (*p == ','))) - p++; - } - *l = '\0'; - channel->lookups = strdup(lookups); - return (channel->lookups) ? ARES_SUCCESS : ARES_ENOMEM; -} -#endif /* !WIN32 & !WATT32 */ - -#ifndef WATT32 -static int config_nameserver(struct server_state **servers, int *nservers, - char *str) -{ - struct ares_addr host; - struct server_state *newserv; - char *p, *txtaddr; - /* On Windows, there may be more than one nameserver specified in the same - * registry key, so we parse input as a space or comma seperated list. - */ - for (p = str; p;) - { - /* Skip whitespace and commas. */ - while (*p && (ISSPACE(*p) || (*p == ','))) - p++; - if (!*p) - /* No more input, done. */ - break; - - /* Pointer to start of IPv4 or IPv6 address part. */ - txtaddr = p; - - /* Advance past this address. */ - while (*p && !ISSPACE(*p) && (*p != ',')) - p++; - if (*p) - /* Null terminate this address. */ - *p++ = '\0'; - else - /* Reached end of input, done when this address is processed. */ - p = NULL; - - /* Convert textual address to binary format. */ - if (ares_inet_pton(AF_INET, txtaddr, &host.addrV4) == 1) - host.family = AF_INET; - else if (ares_inet_pton(AF_INET6, txtaddr, &host.addrV6) == 1) - host.family = AF_INET6; - else - continue; - - /* Resize servers state array. */ - newserv = realloc(*servers, (*nservers + 1) * - sizeof(struct server_state)); - if (!newserv) - return ARES_ENOMEM; - - /* Store address data. */ - newserv[*nservers].addr.family = host.family; - if (host.family == AF_INET) - memcpy(&newserv[*nservers].addr.addrV4, &host.addrV4, - sizeof(host.addrV4)); - else - memcpy(&newserv[*nservers].addr.addrV6, &host.addrV6, - sizeof(host.addrV6)); - - /* Update arguments. */ - *servers = newserv; - *nservers += 1; - } - - return ARES_SUCCESS; -} - -#ifndef WIN32 -static int config_sortlist(struct apattern **sortlist, int *nsort, - const char *str) -{ - struct apattern pat; - const char *q; - - /* Add sortlist entries. */ - while (*str && *str != ';') - { - int bits; - char ipbuf[16], ipbufpfx[32]; - /* Find just the IP */ - q = str; - while (*q && *q != '/' && *q != ';' && !ISSPACE(*q)) - q++; - memcpy(ipbuf, str, q-str); - ipbuf[q-str] = '\0'; - /* Find the prefix */ - if (*q == '/') - { - const char *str2 = q+1; - while (*q && *q != ';' && !ISSPACE(*q)) - q++; - memcpy(ipbufpfx, str, q-str); - ipbufpfx[q-str] = '\0'; - str = str2; - } - else - ipbufpfx[0] = '\0'; - /* Lets see if it is CIDR */ - /* First we'll try IPv6 */ - if ((bits = ares_inet_net_pton(AF_INET6, ipbufpfx[0] ? ipbufpfx : ipbuf, - &pat.addrV6, - sizeof(pat.addrV6))) > 0) - { - pat.type = PATTERN_CIDR; - pat.mask.bits = (unsigned short)bits; - pat.family = AF_INET6; - if (!sortlist_alloc(sortlist, nsort, &pat)) - return ARES_ENOMEM; - } - if (ipbufpfx[0] && - (bits = ares_inet_net_pton(AF_INET, ipbufpfx, &pat.addrV4, - sizeof(pat.addrV4))) > 0) - { - pat.type = PATTERN_CIDR; - pat.mask.bits = (unsigned short)bits; - pat.family = AF_INET; - if (!sortlist_alloc(sortlist, nsort, &pat)) - return ARES_ENOMEM; - } - /* See if it is just a regular IP */ - else if (ip_addr(ipbuf, q-str, &pat.addrV4) == 0) - { - if (ipbufpfx[0]) - { - memcpy(ipbuf, str, q-str); - ipbuf[q-str] = '\0'; - if (ip_addr(ipbuf, q-str, &pat.mask.addr4) != 0) - natural_mask(&pat); - } - else - natural_mask(&pat); - pat.family = AF_INET; - pat.type = PATTERN_MASK; - if (!sortlist_alloc(sortlist, nsort, &pat)) - return ARES_ENOMEM; - } - else - { - while (*q && *q != ';' && !ISSPACE(*q)) - q++; - } - str = q; - while (ISSPACE(*str)) - str++; - } - - return ARES_SUCCESS; -} -#endif /* !WIN32 */ -#endif /* !WATT32 */ - -static int set_search(ares_channel channel, const char *str) -{ - int n; - const char *p, *q; - - if(channel->ndomains != -1) { - /* if we already have some domains present, free them first */ - for(n=0; n < channel->ndomains; n++) - free(channel->domains[n]); - free(channel->domains); - channel->domains = NULL; - channel->ndomains = -1; - } - - /* Count the domains given. */ - n = 0; - p = str; - while (*p) - { - while (*p && !ISSPACE(*p)) - p++; - while (ISSPACE(*p)) - p++; - n++; - } - - if (!n) - { - channel->ndomains = 0; - return ARES_SUCCESS; - } - - channel->domains = malloc(n * sizeof(char *)); - if (!channel->domains) - return ARES_ENOMEM; - - /* Now copy the domains. */ - n = 0; - p = str; - while (*p) - { - channel->ndomains = n; - q = p; - while (*q && !ISSPACE(*q)) - q++; - channel->domains[n] = malloc(q - p + 1); - if (!channel->domains[n]) - return ARES_ENOMEM; - memcpy(channel->domains[n], p, q - p); - channel->domains[n][q - p] = 0; - p = q; - while (ISSPACE(*p)) - p++; - n++; - } - channel->ndomains = n; - - return ARES_SUCCESS; -} - -static int set_options(ares_channel channel, const char *str) -{ - const char *p, *q, *val; - - p = str; - while (*p) - { - q = p; - while (*q && !ISSPACE(*q)) - q++; - val = try_option(p, q, "ndots:"); - if (val && channel->ndots == -1) - channel->ndots = aresx_sltosi(strtol(val, NULL, 10)); - val = try_option(p, q, "retrans:"); - if (val && channel->timeout == -1) - channel->timeout = aresx_sltosi(strtol(val, NULL, 10)); - val = try_option(p, q, "retry:"); - if (val && channel->tries == -1) - channel->tries = aresx_sltosi(strtol(val, NULL, 10)); - val = try_option(p, q, "rotate"); - if (val && channel->rotate == -1) - channel->rotate = 1; - p = q; - while (ISSPACE(*p)) - p++; - } - - return ARES_SUCCESS; -} - -static const char *try_option(const char *p, const char *q, const char *opt) -{ - size_t len = strlen(opt); - return ((size_t)(q - p) >= len && !strncmp(p, opt, len)) ? &p[len] : NULL; -} - -#if !defined(WIN32) && !defined(WATT32) -static char *try_config(char *s, const char *opt) -{ - size_t len; - char *p; - char *q; - - if (!s || !opt) - /* no line or no option */ - return NULL; - - /* trim line comment */ - p = s; - while (*p && (*p != '#')) - p++; - *p = '\0'; - - /* trim trailing whitespace */ - q = p - 1; - while ((q >= s) && ISSPACE(*q)) - q--; - *++q = '\0'; - - /* skip leading whitespace */ - p = s; - while (*p && ISSPACE(*p)) - p++; - - if (!*p) - /* empty line */ - return NULL; - - if ((len = strlen(opt)) == 0) - /* empty option */ - return NULL; - - if (strncmp(p, opt, len) != 0) - /* line and option do not match */ - return NULL; - - /* skip over given option name */ - p += len; - - if (!*p) - /* no option value */ - return NULL; - - if ((opt[len-1] != ':') && (opt[len-1] != '=') && !ISSPACE(*p)) - /* whitespace between option name and value is mandatory - for given option names which do not end with ':' or '=' */ - return NULL; - - /* skip over whitespace */ - while (*p && ISSPACE(*p)) - p++; - - if (!*p) - /* no option value */ - return NULL; - - /* return pointer to option value */ - return p; -} - -static int sortlist_alloc(struct apattern **sortlist, int *nsort, - struct apattern *pat) -{ - struct apattern *newsort; - newsort = realloc(*sortlist, (*nsort + 1) * sizeof(struct apattern)); - if (!newsort) - return 0; - newsort[*nsort] = *pat; - *sortlist = newsort; - (*nsort)++; - return 1; -} - -static int ip_addr(const char *ipbuf, ssize_t len, struct in_addr *addr) -{ - - /* Four octets and three periods yields at most 15 characters. */ - if (len > 15) - return -1; - - addr->s_addr = inet_addr(ipbuf); - if (addr->s_addr == INADDR_NONE && strcmp(ipbuf, "255.255.255.255") != 0) - return -1; - return 0; -} - -static void natural_mask(struct apattern *pat) -{ - struct in_addr addr; - - /* Store a host-byte-order copy of pat in a struct in_addr. Icky, - * but portable. - */ - addr.s_addr = ntohl(pat->addrV4.s_addr); - - /* This is out of date in the CIDR world, but some people might - * still rely on it. - */ - if (IN_CLASSA(addr.s_addr)) - pat->mask.addr4.s_addr = htonl(IN_CLASSA_NET); - else if (IN_CLASSB(addr.s_addr)) - pat->mask.addr4.s_addr = htonl(IN_CLASSB_NET); - else - pat->mask.addr4.s_addr = htonl(IN_CLASSC_NET); -} -#endif /* !WIN32 && !WATT32 */ - -/* initialize an rc4 key. If possible a cryptographically secure random key - is generated using a suitable function (for example win32's RtlGenRandom as - described in - http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx - otherwise the code defaults to cross-platform albeit less secure mechanism - using rand -*/ -static void randomize_key(unsigned char* key,int key_data_len) -{ - int randomized = 0; - int counter=0; -#ifdef WIN32 - BOOLEAN res; - if (ares_fpSystemFunction036) - { - res = (*ares_fpSystemFunction036) (key, key_data_len); - if (res) - randomized = 1; - } -#else /* !WIN32 */ -#ifdef RANDOM_FILE - FILE *f = fopen(RANDOM_FILE, "rb"); - if(f) { - counter = aresx_uztosi(fread(key, 1, key_data_len, f)); - fclose(f); - } -#endif -#endif /* WIN32 */ - - if ( !randomized ) { - for (;counterstate[0]; - for(counter = 0; counter < 256; counter++) - /* unnecessary AND but it keeps some compilers happier */ - state[counter] = (unsigned char)(counter & 0xff); - randomize_key(key->state,key_data_len); - key->x = 0; - key->y = 0; - index1 = 0; - index2 = 0; - for(counter = 0; counter < 256; counter++) - { - index2 = (unsigned char)((key_data_ptr[index1] + state[counter] + - index2) % 256); - ARES_SWAP_BYTE(&state[counter], &state[index2]); - - index1 = (unsigned char)((index1 + 1) % key_data_len); - } - free(key_data_ptr); - return ARES_SUCCESS; -} - -unsigned short ares__generate_new_id(rc4_key* key) -{ - unsigned short r=0; - ares__rc4(key, (unsigned char *)&r, sizeof(r)); - return r; -} - -void ares_set_local_ip4(ares_channel channel, unsigned int local_ip) -{ - channel->local_ip4 = local_ip; -} - -/* local_ip6 should be 16 bytes in length */ -void ares_set_local_ip6(ares_channel channel, - const unsigned char* local_ip6) -{ - memcpy(&channel->local_ip6, local_ip6, sizeof(channel->local_ip6)); -} - -/* local_dev_name should be null terminated. */ -void ares_set_local_dev(ares_channel channel, - const char* local_dev_name) -{ - strncpy(channel->local_dev_name, local_dev_name, - sizeof(channel->local_dev_name)); - channel->local_dev_name[sizeof(channel->local_dev_name) - 1] = 0; -} - - -void ares_set_socket_callback(ares_channel channel, - ares_sock_create_callback cb, - void *data) -{ - channel->sock_create_cb = cb; - channel->sock_create_cb_data = data; -} - -void ares__init_servers_state(ares_channel channel) -{ - struct server_state *server; - int i; - - for (i = 0; i < channel->nservers; i++) - { - server = &channel->servers[i]; - server->udp_socket = ARES_SOCKET_BAD; - server->tcp_socket = ARES_SOCKET_BAD; - server->tcp_connection_generation = ++channel->tcp_connection_generation; - server->tcp_lenbuf_pos = 0; - server->tcp_buffer_pos = 0; - server->tcp_buffer = NULL; - server->tcp_length = 0; - server->qhead = NULL; - server->qtail = NULL; - ares__init_list_head(&server->queries_to_server); - server->channel = channel; - server->is_broken = 0; - } -} diff --git a/deps/uv/c-ares/ares_ipv6.h b/deps/uv/c-ares/ares_ipv6.h deleted file mode 100644 index 6f1022a76f..0000000000 --- a/deps/uv/c-ares/ares_ipv6.h +++ /dev/null @@ -1,78 +0,0 @@ - -/* Copyright (C) 2005 by Dominick Meglio - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#ifndef ARES_IPV6_H -#define ARES_IPV6_H - -#ifndef HAVE_PF_INET6 -#define PF_INET6 AF_INET6 -#endif - -#ifndef HAVE_STRUCT_SOCKADDR_IN6 -struct sockaddr_in6 -{ - unsigned short sin6_family; - unsigned short sin6_port; - unsigned long sin6_flowinfo; - struct ares_in6_addr sin6_addr; - unsigned int sin6_scope_id; -}; -#endif - -#ifndef HAVE_STRUCT_ADDRINFO -struct addrinfo -{ - int ai_flags; - int ai_family; - int ai_socktype; - int ai_protocol; - ares_socklen_t ai_addrlen; /* Follow rfc3493 struct addrinfo */ - char *ai_canonname; - struct sockaddr *ai_addr; - struct addrinfo *ai_next; -}; -#endif - -#ifndef NS_IN6ADDRSZ -#if SIZEOF_STRUCT_IN6_ADDR == 0 -/* We cannot have it set to zero, so we pick a fixed value here */ -#define NS_IN6ADDRSZ 16 -#else -#define NS_IN6ADDRSZ SIZEOF_STRUCT_IN6_ADDR -#endif -#endif - -#ifndef NS_INADDRSZ -#define NS_INADDRSZ SIZEOF_STRUCT_IN_ADDR -#endif - -#ifndef NS_INT16SZ -#define NS_INT16SZ 2 -#endif - -#ifndef IF_NAMESIZE -#ifdef IFNAMSIZ -#define IF_NAMESIZE IFNAMSIZ -#else -#define IF_NAMESIZE 256 -#endif -#endif - -/* Defined in ares_net_pton.c for no particular reason. */ -extern const struct ares_in6_addr ares_in6addr_any; /* :: */ - - -#endif /* ARES_IPV6_H */ diff --git a/deps/uv/c-ares/ares_library_init.c b/deps/uv/c-ares/ares_library_init.c deleted file mode 100644 index 1a875da150..0000000000 --- a/deps/uv/c-ares/ares_library_init.c +++ /dev/null @@ -1,132 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2004-2009 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#include "ares.h" -#include "ares_library_init.h" -#include "ares_private.h" - -/* library-private global and unique instance vars */ - -#ifdef USE_WINSOCK -fpGetNetworkParams_t ares_fpGetNetworkParams = ZERO_NULL; -fpSystemFunction036_t ares_fpSystemFunction036 = ZERO_NULL; -#endif - -/* library-private global vars with source visibility restricted to this file */ - -static unsigned int ares_initialized; -static int ares_init_flags; - -#ifdef USE_WINSOCK -static HMODULE hnd_iphlpapi; -static HMODULE hnd_advapi32; -#endif - - -static int ares_win32_init(void) -{ -#ifdef USE_WINSOCK - - hnd_iphlpapi = 0; - hnd_iphlpapi = LoadLibrary("iphlpapi.dll"); - if (!hnd_iphlpapi) - return ARES_ELOADIPHLPAPI; - - ares_fpGetNetworkParams = (fpGetNetworkParams_t) - GetProcAddress(hnd_iphlpapi, "GetNetworkParams"); - if (!ares_fpGetNetworkParams) - { - FreeLibrary(hnd_iphlpapi); - return ARES_EADDRGETNETWORKPARAMS; - } - - /* - * When advapi32.dll is unavailable or advapi32.dll has no SystemFunction036, - * also known as RtlGenRandom, which is the case for Windows versions prior - * to WinXP then c-ares uses portable rand() function. Then don't error here. - */ - - hnd_advapi32 = 0; - hnd_advapi32 = LoadLibrary("advapi32.dll"); - if (hnd_advapi32) - { - ares_fpSystemFunction036 = (fpSystemFunction036_t) - GetProcAddress(hnd_advapi32, "SystemFunction036"); - } - -#endif - return ARES_SUCCESS; -} - - -static void ares_win32_cleanup(void) -{ -#ifdef USE_WINSOCK - if (hnd_advapi32) - FreeLibrary(hnd_advapi32); - if (hnd_iphlpapi) - FreeLibrary(hnd_iphlpapi); -#endif -} - - -int ares_library_init(int flags) -{ - int res; - - if (ares_initialized) - return ARES_SUCCESS; - ares_initialized++; - - if (flags & ARES_LIB_INIT_WIN32) - { - res = ares_win32_init(); - if (res != ARES_SUCCESS) - return res; - } - - ares_init_flags = flags; - - return ARES_SUCCESS; -} - - -void ares_library_cleanup(void) -{ - if (!ares_initialized) - return; - ares_initialized--; - - if (ares_init_flags & ARES_LIB_INIT_WIN32) - ares_win32_cleanup(); - - ares_init_flags = ARES_LIB_INIT_NONE; -} - - -int ares_library_initialized(void) -{ -#ifdef USE_WINSOCK - if (!ares_initialized) - return ARES_ENOTINITIALIZED; -#endif - return ARES_SUCCESS; -} - - diff --git a/deps/uv/c-ares/ares_library_init.h b/deps/uv/c-ares/ares_library_init.h deleted file mode 100644 index 29d5c9e73f..0000000000 --- a/deps/uv/c-ares/ares_library_init.h +++ /dev/null @@ -1,39 +0,0 @@ -#ifndef HEADER_CARES_LIBRARY_INIT_H -#define HEADER_CARES_LIBRARY_INIT_H - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2004-2009 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef USE_WINSOCK - -#include - -typedef DWORD (WINAPI *fpGetNetworkParams_t) (FIXED_INFO*, DWORD*); -typedef BOOLEAN (APIENTRY *fpSystemFunction036_t) (void*, ULONG); - -/* Forward-declaration of variables defined in ares_library_init.c */ -/* that are global and unique instances for whole c-ares library. */ - -extern fpGetNetworkParams_t ares_fpGetNetworkParams; -extern fpSystemFunction036_t ares_fpSystemFunction036; - -#endif /* USE_WINSOCK */ - -#endif /* HEADER_CARES_LIBRARY_INIT_H */ - diff --git a/deps/uv/c-ares/ares_llist.c b/deps/uv/c-ares/ares_llist.c deleted file mode 100644 index c0acd90a8e..0000000000 --- a/deps/uv/c-ares/ares_llist.c +++ /dev/null @@ -1,86 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#include "ares.h" -#include "ares_private.h" - -/* Routines for managing doubly-linked circular linked lists with a - * dummy head. - */ - -/* Initialize a new head node */ -void ares__init_list_head(struct list_node* head) { - head->prev = head; - head->next = head; - head->data = NULL; -} - -/* Initialize a list node */ -void ares__init_list_node(struct list_node* node, void* d) { - node->prev = NULL; - node->next = NULL; - node->data = d; -} - -/* Returns true iff the given list is empty */ -int ares__is_list_empty(struct list_node* head) { - return ((head->next == head) && (head->prev == head)); -} - -/* Inserts new_node before old_node */ -void ares__insert_in_list(struct list_node* new_node, - struct list_node* old_node) { - new_node->next = old_node; - new_node->prev = old_node->prev; - old_node->prev->next = new_node; - old_node->prev = new_node; -} - -/* Removes the node from the list it's in, if any */ -void ares__remove_from_list(struct list_node* node) { - if (node->next != NULL) { - node->prev->next = node->next; - node->next->prev = node->prev; - node->prev = NULL; - node->next = NULL; - } -} - -/* Swap the contents of two lists */ -void ares__swap_lists(struct list_node* head_a, - struct list_node* head_b) { - int is_a_empty = ares__is_list_empty(head_a); - int is_b_empty = ares__is_list_empty(head_b); - struct list_node old_a = *head_a; - struct list_node old_b = *head_b; - - if (is_a_empty) { - ares__init_list_head(head_b); - } else { - *head_b = old_a; - old_a.next->prev = head_b; - old_a.prev->next = head_b; - } - if (is_b_empty) { - ares__init_list_head(head_a); - } else { - *head_a = old_b; - old_b.next->prev = head_a; - old_b.prev->next = head_a; - } -} diff --git a/deps/uv/c-ares/ares_llist.h b/deps/uv/c-ares/ares_llist.h deleted file mode 100644 index b09f0de6d7..0000000000 --- a/deps/uv/c-ares/ares_llist.h +++ /dev/null @@ -1,42 +0,0 @@ -#ifndef __ARES_LLIST_H -#define __ARES_LLIST_H - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - - -/* Node definition for circular, doubly-linked list */ -struct list_node { - struct list_node *prev; - struct list_node *next; - void* data; -}; - -void ares__init_list_head(struct list_node* head); - -void ares__init_list_node(struct list_node* node, void* d); - -int ares__is_list_empty(struct list_node* head); - -void ares__insert_in_list(struct list_node* new_node, - struct list_node* old_node); - -void ares__remove_from_list(struct list_node* node); - -void ares__swap_lists(struct list_node* head_a, - struct list_node* head_b); - -#endif /* __ARES_LLIST_H */ diff --git a/deps/uv/c-ares/ares_mkquery.c b/deps/uv/c-ares/ares_mkquery.c deleted file mode 100644 index e33f13ff22..0000000000 --- a/deps/uv/c-ares/ares_mkquery.c +++ /dev/null @@ -1,195 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include "ares.h" -#include "ares_dns.h" -#include "ares_private.h" - -/* Header format, from RFC 1035: - * 1 1 1 1 1 1 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | ID | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * |QR| Opcode |AA|TC|RD|RA| Z | RCODE | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | QDCOUNT | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | ANCOUNT | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | NSCOUNT | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | ARCOUNT | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * - * AA, TC, RA, and RCODE are only set in responses. Brief description - * of the remaining fields: - * ID Identifier to match responses with queries - * QR Query (0) or response (1) - * Opcode For our purposes, always QUERY - * RD Recursion desired - * Z Reserved (zero) - * QDCOUNT Number of queries - * ANCOUNT Number of answers - * NSCOUNT Number of name server records - * ARCOUNT Number of additional records - * - * Question format, from RFC 1035: - * 1 1 1 1 1 1 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | | - * / QNAME / - * / / - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | QTYPE | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | QCLASS | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * - * The query name is encoded as a series of labels, each represented - * as a one-byte length (maximum 63) followed by the text of the - * label. The list is terminated by a label of length zero (which can - * be thought of as the root domain). - */ - -int ares_mkquery(const char *name, int dnsclass, int type, unsigned short id, - int rd, unsigned char **buf, int *buflen) -{ - int len; - unsigned char *q; - const char *p; - - /* Set our results early, in case we bail out early with an error. */ - *buflen = 0; - *buf = NULL; - - /* Compute the length of the encoded name so we can check buflen. - * Start counting at 1 for the zero-length label at the end. */ - len = 1; - for (p = name; *p; p++) - { - if (*p == '\\' && *(p + 1) != 0) - p++; - len++; - } - /* If there are n periods in the name, there are n + 1 labels, and - * thus n + 1 length fields, unless the name is empty or ends with a - * period. So add 1 unless name is empty or ends with a period. - */ - if (*name && *(p - 1) != '.') - len++; - - /* Immediately reject names that are longer than the maximum of 255 - * bytes that's specified in RFC 1035 ("To simplify implementations, - * the total length of a domain name (i.e., label octets and label - * length octets) is restricted to 255 octets or less."). We aren't - * doing this just to be a stickler about RFCs. For names that are - * too long, 'dnscache' closes its TCP connection to us immediately - * (when using TCP) and ignores the request when using UDP, and - * BIND's named returns ServFail (TCP or UDP). Sending a request - * that we know will cause 'dnscache' to close the TCP connection is - * painful, since that makes any other outstanding requests on that - * connection fail. And sending a UDP request that we know - * 'dnscache' will ignore is bad because resources will be tied up - * until we time-out the request. - */ - if (len > MAXCDNAME) - return ARES_EBADNAME; - - *buflen = len + HFIXEDSZ + QFIXEDSZ; - *buf = malloc(*buflen); - if (!*buf) - return ARES_ENOMEM; - - /* Set up the header. */ - q = *buf; - memset(q, 0, HFIXEDSZ); - DNS_HEADER_SET_QID(q, id); - DNS_HEADER_SET_OPCODE(q, QUERY); - if (rd) { - DNS_HEADER_SET_RD(q, 1); - } - else { - DNS_HEADER_SET_RD(q, 0); - } - DNS_HEADER_SET_QDCOUNT(q, 1); - - /* A name of "." is a screw case for the loop below, so adjust it. */ - if (strcmp(name, ".") == 0) - name++; - - /* Start writing out the name after the header. */ - q += HFIXEDSZ; - while (*name) - { - if (*name == '.') - return ARES_EBADNAME; - - /* Count the number of bytes in this label. */ - len = 0; - for (p = name; *p && *p != '.'; p++) - { - if (*p == '\\' && *(p + 1) != 0) - p++; - len++; - } - if (len > MAXLABEL) - return ARES_EBADNAME; - - /* Encode the length and copy the data. */ - *q++ = (unsigned char)len; - for (p = name; *p && *p != '.'; p++) - { - if (*p == '\\' && *(p + 1) != 0) - p++; - *q++ = *p; - } - - /* Go to the next label and repeat, unless we hit the end. */ - if (!*p) - break; - name = p + 1; - } - - /* Add the zero-length label at the end. */ - *q++ = 0; - - /* Finish off the question with the type and class. */ - DNS_QUESTION_SET_TYPE(q, type); - DNS_QUESTION_SET_CLASS(q, dnsclass); - - return ARES_SUCCESS; -} diff --git a/deps/uv/c-ares/ares_nowarn.c b/deps/uv/c-ares/ares_nowarn.c deleted file mode 100644 index 52d079e640..0000000000 --- a/deps/uv/c-ares/ares_nowarn.c +++ /dev/null @@ -1,59 +0,0 @@ - -/* Copyright (C) 2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - - -#include "ares_setup.h" - -#include "ares_nowarn.h" - -#define CARES_MASK_UINT (~(unsigned int) 0) -#define CARES_MASK_SINT (CARES_MASK_UINT >> 1) - -/* -** size_t to signed int -*/ - -int aresx_uztosi(size_t uznum) -{ -#ifdef __INTEL_COMPILER -# pragma warning(push) -# pragma warning(disable:810) /* conversion may lose significant bits */ -#endif - - return (int)(uznum & (size_t) CARES_MASK_SINT); - -#ifdef __INTEL_COMPILER -# pragma warning(pop) -#endif -} - -/* -** signed long to signed int -*/ - -int aresx_sltosi(long slnum) -{ -#ifdef __INTEL_COMPILER -# pragma warning(push) -# pragma warning(disable:810) /* conversion may lose significant bits */ -#endif - - return (int)(slnum & (long) CARES_MASK_SINT); - -#ifdef __INTEL_COMPILER -# pragma warning(pop) -#endif -} diff --git a/deps/uv/c-ares/ares_nowarn.h b/deps/uv/c-ares/ares_nowarn.h deleted file mode 100644 index fb80495106..0000000000 --- a/deps/uv/c-ares/ares_nowarn.h +++ /dev/null @@ -1,24 +0,0 @@ -#ifndef HEADER_CARES_NOWARN_H -#define HEADER_CARES_NOWARN_H - - -/* Copyright (C) 2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -int aresx_uztosi(size_t uznum); - -int aresx_sltosi(long slnum); - -#endif /* HEADER_CARES_NOWARN_H */ diff --git a/deps/uv/c-ares/ares_options.c b/deps/uv/c-ares/ares_options.c deleted file mode 100644 index 7028052686..0000000000 --- a/deps/uv/c-ares/ares_options.c +++ /dev/null @@ -1,253 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2008-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - - -#include "ares_setup.h" - -#ifdef HAVE_ARPA_INET_H -# include -#endif - -#include "ares.h" -#include "ares_data.h" -#include "inet_net_pton.h" -#include "ares_private.h" - - -int ares_get_servers(ares_channel channel, - struct ares_addr_node **servers) -{ - struct ares_addr_node *srvr_head = NULL; - struct ares_addr_node *srvr_last = NULL; - struct ares_addr_node *srvr_curr; - int status = ARES_SUCCESS; - int i; - - if (!channel) - return ARES_ENODATA; - - for (i = 0; i < channel->nservers; i++) - { - /* Allocate storage for this server node appending it to the list */ - srvr_curr = ares_malloc_data(ARES_DATATYPE_ADDR_NODE); - if (!srvr_curr) - { - status = ARES_ENOMEM; - break; - } - if (srvr_last) - { - srvr_last->next = srvr_curr; - } - else - { - srvr_head = srvr_curr; - } - srvr_last = srvr_curr; - - /* Fill this server node data */ - srvr_curr->family = channel->servers[i].addr.family; - if (srvr_curr->family == AF_INET) - memcpy(&srvr_curr->addrV4, &channel->servers[i].addr.addrV4, - sizeof(srvr_curr->addrV4)); - else - memcpy(&srvr_curr->addrV6, &channel->servers[i].addr.addrV6, - sizeof(srvr_curr->addrV6)); - } - - if (status != ARES_SUCCESS) - { - if (srvr_head) - { - ares_free_data(srvr_head); - srvr_head = NULL; - } - } - - *servers = srvr_head; - - return status; -} - - -int ares_set_servers(ares_channel channel, - struct ares_addr_node *servers) -{ - struct ares_addr_node *srvr; - int num_srvrs = 0; - int i; - - if (ares_library_initialized() != ARES_SUCCESS) - return ARES_ENOTINITIALIZED; - - if (!channel) - return ARES_ENODATA; - - ares__destroy_servers_state(channel); - - for (srvr = servers; srvr; srvr = srvr->next) - { - num_srvrs++; - } - - if (num_srvrs > 0) - { - /* Allocate storage for servers state */ - channel->servers = malloc(num_srvrs * sizeof(struct server_state)); - if (!channel->servers) - { - return ARES_ENOMEM; - } - channel->nservers = num_srvrs; - /* Fill servers state address data */ - for (i = 0, srvr = servers; srvr; i++, srvr = srvr->next) - { - channel->servers[i].addr.family = srvr->family; - if (srvr->family == AF_INET) - memcpy(&channel->servers[i].addr.addrV4, &srvr->addrV4, - sizeof(srvr->addrV4)); - else - memcpy(&channel->servers[i].addr.addrV6, &srvr->addrV6, - sizeof(srvr->addrV6)); - } - /* Initialize servers state remaining data */ - ares__init_servers_state(channel); - } - - return ARES_SUCCESS; -} - -/* Incomming string format: host[:port][,host[:port]]... */ -int ares_set_servers_csv(ares_channel channel, - const char* _csv) -{ - int i; - char* csv = NULL; - char* ptr; - char* start_host; - long port; - bool found_port; - int rv = ARES_SUCCESS; - struct ares_addr_node *servers = NULL; - struct ares_addr_node *last = NULL; - - if (ares_library_initialized() != ARES_SUCCESS) - return ARES_ENOTINITIALIZED; - - if (!channel) - return ARES_ENODATA; - - ares__destroy_servers_state(channel); - - i = strlen(_csv); - if (i == 0) - return ARES_SUCCESS; /* blank all servers */ - - csv = malloc(i + 2); - strcpy(csv, _csv); - if (csv[i-1] != ',') { /* make parsing easier by ensuring ending ',' */ - csv[i] = ','; - csv[i+1] = 0; - } - - start_host = csv; - found_port = false; - for (ptr = csv; *ptr; ptr++) { - if (*ptr == ',') { - char* pp = ptr - 1; - struct in_addr in4; - struct ares_in6_addr in6; - struct ares_addr_node *s = NULL; - - *ptr = 0; /* null terminate host:port string */ - /* Got an entry..see if port was specified. */ - while (pp > start_host) { - if (*pp == ':') - break; /* yes */ - if (!ISDIGIT(*pp)) { - /* Found end of digits before we found :, so wasn't a port */ - pp = ptr; - break; - } - pp--; - } - if ((pp != start_host) && ((pp + 1) < ptr)) { - /* Found it. */ - found_port = true; - port = strtol(pp + 1, NULL, 10); - *pp = 0; /* null terminate host */ - } - /* resolve host, try ipv4 first, rslt is in network byte order */ - rv = ares_inet_pton(AF_INET, start_host, &in4); - if (!rv) { - /* Ok, try IPv6 then */ - rv = ares_inet_pton(AF_INET6, start_host, &in6); - if (!rv) { - rv = ARES_EBADSTR; - goto out; - } - /* was ipv6, add new server */ - s = malloc(sizeof(*s)); - if (!s) { - rv = ARES_ENOMEM; - goto out; - } - s->family = AF_INET6; - memcpy(&s->addr, &in6, sizeof(struct ares_in6_addr)); - } - else { - /* was ipv4, add new server */ - s = malloc(sizeof(*s)); - if (!s) { - rv = ARES_ENOMEM; - goto out; - } - s->family = AF_INET; - memcpy(&s->addr, &in4, sizeof(struct in_addr)); - } - if (s) { - /* TODO: Add port to ares_addr_node and assign it here. */ - - s->next = NULL; - if (last) { - last->next = s; - } - else { - servers = s; - last = s; - } - } - - /* Set up for next one */ - found_port = false; - start_host = ptr + 1; - } - } - - rv = ares_set_servers(channel, servers); - - out: - if (csv) - free(csv); - while (servers) { - struct ares_addr_node *s = servers; - servers = servers->next; - free(s); - } - - return rv; -} diff --git a/deps/uv/c-ares/ares_parse_a_reply.c b/deps/uv/c-ares/ares_parse_a_reply.c deleted file mode 100644 index 93012549c9..0000000000 --- a/deps/uv/c-ares/ares_parse_a_reply.c +++ /dev/null @@ -1,258 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#ifdef HAVE_STRINGS_H -# include -#endif - -#include -#include -#ifdef HAVE_LIMITS_H -# include -#endif - -#include "ares.h" -#include "ares_dns.h" -#include "ares_private.h" - -int ares_parse_a_reply(const unsigned char *abuf, int alen, - struct hostent **host, - struct ares_addrttl *addrttls, int *naddrttls) -{ - unsigned int qdcount, ancount; - int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs; - int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */ - int naliases; - long len; - const unsigned char *aptr; - char *hostname, *rr_name, *rr_data, **aliases; - struct in_addr *addrs; - struct hostent *hostent; - const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0; - - /* Set *host to NULL for all failure cases. */ - if (host) - *host = NULL; - /* Same with *naddrttls. */ - if (naddrttls) - *naddrttls = 0; - - /* Give up if abuf doesn't have room for a header. */ - if (alen < HFIXEDSZ) - return ARES_EBADRESP; - - /* Fetch the question and answer count from the header. */ - qdcount = DNS_HEADER_QDCOUNT(abuf); - ancount = DNS_HEADER_ANCOUNT(abuf); - if (qdcount != 1) - return ARES_EBADRESP; - - /* Expand the name from the question, and skip past the question. */ - aptr = abuf + HFIXEDSZ; - status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len); - if (status != ARES_SUCCESS) - return status; - if (aptr + len + QFIXEDSZ > abuf + alen) - { - free(hostname); - return ARES_EBADRESP; - } - aptr += len + QFIXEDSZ; - - if (host) - { - /* Allocate addresses and aliases; ancount gives an upper bound for - both. */ - addrs = malloc(ancount * sizeof(struct in_addr)); - if (!addrs) - { - free(hostname); - return ARES_ENOMEM; - } - aliases = malloc((ancount + 1) * sizeof(char *)); - if (!aliases) - { - free(hostname); - free(addrs); - return ARES_ENOMEM; - } - } - else - { - addrs = NULL; - aliases = NULL; - } - - naddrs = 0; - naliases = 0; - - /* Examine each answer resource record (RR) in turn. */ - for (i = 0; i < (int)ancount; i++) - { - /* Decode the RR up to the data field. */ - status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); - if (status != ARES_SUCCESS) - break; - aptr += len; - if (aptr + RRFIXEDSZ > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - rr_type = DNS_RR_TYPE(aptr); - rr_class = DNS_RR_CLASS(aptr); - rr_len = DNS_RR_LEN(aptr); - rr_ttl = DNS_RR_TTL(aptr); - aptr += RRFIXEDSZ; - - if (rr_class == C_IN && rr_type == T_A - && rr_len == sizeof(struct in_addr) - && strcasecmp(rr_name, hostname) == 0) - { - if (addrs) - { - if (aptr + sizeof(struct in_addr) > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - memcpy(&addrs[naddrs], aptr, sizeof(struct in_addr)); - } - if (naddrs < max_addr_ttls) - { - struct ares_addrttl * const at = &addrttls[naddrs]; - if (aptr + sizeof(struct in_addr) > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - memcpy(&at->ipaddr, aptr, sizeof(struct in_addr)); - at->ttl = rr_ttl; - } - naddrs++; - status = ARES_SUCCESS; - } - - if (rr_class == C_IN && rr_type == T_CNAME) - { - /* Record the RR name as an alias. */ - if (aliases) - aliases[naliases] = rr_name; - else - free(rr_name); - naliases++; - - /* Decode the RR data and replace the hostname with it. */ - status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, - &len); - if (status != ARES_SUCCESS) - break; - free(hostname); - hostname = rr_data; - - /* Take the min of the TTLs we see in the CNAME chain. */ - if (cname_ttl > rr_ttl) - cname_ttl = rr_ttl; - } - else - free(rr_name); - - aptr += rr_len; - if (aptr > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - } - - if (status == ARES_SUCCESS && naddrs == 0 && naliases == 0) - /* the check for naliases to be zero is to make sure CNAME responses - don't get caught here */ - status = ARES_ENODATA; - if (status == ARES_SUCCESS) - { - /* We got our answer. */ - if (naddrttls) - { - const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls; - for (i = 0; i < n; i++) - { - /* Ensure that each A TTL is no larger than the CNAME TTL. */ - if (addrttls[i].ttl > cname_ttl) - addrttls[i].ttl = cname_ttl; - } - *naddrttls = n; - } - if (aliases) - aliases[naliases] = NULL; - if (host) - { - /* Allocate memory to build the host entry. */ - hostent = malloc(sizeof(struct hostent)); - if (hostent) - { - hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *)); - if (hostent->h_addr_list) - { - /* Fill in the hostent and return successfully. */ - hostent->h_name = hostname; - hostent->h_aliases = aliases; - hostent->h_addrtype = AF_INET; - hostent->h_length = sizeof(struct in_addr); - for (i = 0; i < naddrs; i++) - hostent->h_addr_list[i] = (char *) &addrs[i]; - hostent->h_addr_list[naddrs] = NULL; - *host = hostent; - return ARES_SUCCESS; - } - free(hostent); - } - status = ARES_ENOMEM; - } - } - if (aliases) - { - for (i = 0; i < naliases; i++) - free(aliases[i]); - free(aliases); - } - free(addrs); - free(hostname); - return status; -} diff --git a/deps/uv/c-ares/ares_parse_aaaa_reply.c b/deps/uv/c-ares/ares_parse_aaaa_reply.c deleted file mode 100644 index a0f524daa5..0000000000 --- a/deps/uv/c-ares/ares_parse_aaaa_reply.c +++ /dev/null @@ -1,256 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright 2005 Dominick Meglio - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#ifdef HAVE_STRINGS_H -# include -#endif - -#include -#include -#ifdef HAVE_LIMITS_H -# include -#endif - -#include "ares.h" -#include "ares_dns.h" -#include "inet_net_pton.h" -#include "ares_private.h" - -int ares_parse_aaaa_reply(const unsigned char *abuf, int alen, - struct hostent **host, struct ares_addr6ttl *addrttls, - int *naddrttls) -{ - unsigned int qdcount, ancount; - int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs; - int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */ - int naliases; - long len; - const unsigned char *aptr; - char *hostname, *rr_name, *rr_data, **aliases; - struct ares_in6_addr *addrs; - struct hostent *hostent; - const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0; - - /* Set *host to NULL for all failure cases. */ - if (host) - *host = NULL; - /* Same with *naddrttls. */ - if (naddrttls) - *naddrttls = 0; - - /* Give up if abuf doesn't have room for a header. */ - if (alen < HFIXEDSZ) - return ARES_EBADRESP; - - /* Fetch the question and answer count from the header. */ - qdcount = DNS_HEADER_QDCOUNT(abuf); - ancount = DNS_HEADER_ANCOUNT(abuf); - if (qdcount != 1) - return ARES_EBADRESP; - - /* Expand the name from the question, and skip past the question. */ - aptr = abuf + HFIXEDSZ; - status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len); - if (status != ARES_SUCCESS) - return status; - if (aptr + len + QFIXEDSZ > abuf + alen) - { - free(hostname); - return ARES_EBADRESP; - } - aptr += len + QFIXEDSZ; - - /* Allocate addresses and aliases; ancount gives an upper bound for both. */ - if (host) - { - addrs = malloc(ancount * sizeof(struct ares_in6_addr)); - if (!addrs) - { - free(hostname); - return ARES_ENOMEM; - } - aliases = malloc((ancount + 1) * sizeof(char *)); - if (!aliases) - { - free(hostname); - free(addrs); - return ARES_ENOMEM; - } - } - else - { - addrs = NULL; - aliases = NULL; - } - naddrs = 0; - naliases = 0; - - /* Examine each answer resource record (RR) in turn. */ - for (i = 0; i < (int)ancount; i++) - { - /* Decode the RR up to the data field. */ - status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); - if (status != ARES_SUCCESS) - break; - aptr += len; - if (aptr + RRFIXEDSZ > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - rr_type = DNS_RR_TYPE(aptr); - rr_class = DNS_RR_CLASS(aptr); - rr_len = DNS_RR_LEN(aptr); - rr_ttl = DNS_RR_TTL(aptr); - aptr += RRFIXEDSZ; - - if (rr_class == C_IN && rr_type == T_AAAA - && rr_len == sizeof(struct ares_in6_addr) - && strcasecmp(rr_name, hostname) == 0) - { - if (addrs) - { - if (aptr + sizeof(struct ares_in6_addr) > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - memcpy(&addrs[naddrs], aptr, sizeof(struct ares_in6_addr)); - } - if (naddrs < max_addr_ttls) - { - struct ares_addr6ttl * const at = &addrttls[naddrs]; - if (aptr + sizeof(struct ares_in6_addr) > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - memcpy(&at->ip6addr, aptr, sizeof(struct ares_in6_addr)); - at->ttl = rr_ttl; - } - naddrs++; - status = ARES_SUCCESS; - } - - if (rr_class == C_IN && rr_type == T_CNAME) - { - /* Record the RR name as an alias. */ - if (aliases) - aliases[naliases] = rr_name; - else - free(rr_name); - naliases++; - - /* Decode the RR data and replace the hostname with it. */ - status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, - &len); - if (status != ARES_SUCCESS) - break; - free(hostname); - hostname = rr_data; - - /* Take the min of the TTLs we see in the CNAME chain. */ - if (cname_ttl > rr_ttl) - cname_ttl = rr_ttl; - } - else - free(rr_name); - - aptr += rr_len; - if (aptr > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - } - - if (status == ARES_SUCCESS && naddrs == 0) - status = ARES_ENODATA; - if (status == ARES_SUCCESS) - { - /* We got our answer. */ - if (naddrttls) - { - const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls; - for (i = 0; i < n; i++) - { - /* Ensure that each A TTL is no larger than the CNAME TTL. */ - if (addrttls[i].ttl > cname_ttl) - addrttls[i].ttl = cname_ttl; - } - *naddrttls = n; - } - if (aliases) - aliases[naliases] = NULL; - if (host) - { - /* Allocate memory to build the host entry. */ - hostent = malloc(sizeof(struct hostent)); - if (hostent) - { - hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *)); - if (hostent->h_addr_list) - { - /* Fill in the hostent and return successfully. */ - hostent->h_name = hostname; - hostent->h_aliases = aliases; - hostent->h_addrtype = AF_INET6; - hostent->h_length = sizeof(struct ares_in6_addr); - for (i = 0; i < naddrs; i++) - hostent->h_addr_list[i] = (char *) &addrs[i]; - hostent->h_addr_list[naddrs] = NULL; - *host = hostent; - return ARES_SUCCESS; - } - free(hostent); - } - status = ARES_ENOMEM; - } - } - if (aliases) - { - for (i = 0; i < naliases; i++) - free(aliases[i]); - free(aliases); - } - free(addrs); - free(hostname); - return status; -} diff --git a/deps/uv/c-ares/ares_parse_mx_reply.c b/deps/uv/c-ares/ares_parse_mx_reply.c deleted file mode 100644 index 186ddd348d..0000000000 --- a/deps/uv/c-ares/ares_parse_mx_reply.c +++ /dev/null @@ -1,170 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2010 Jeremy Lal - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include "ares.h" -#include "ares_dns.h" -#include "ares_data.h" -#include "ares_private.h" - -int -ares_parse_mx_reply (const unsigned char *abuf, int alen, - struct ares_mx_reply **mx_out) -{ - unsigned int qdcount, ancount, i; - const unsigned char *aptr, *vptr; - int status, rr_type, rr_class, rr_len; - long len; - char *hostname = NULL, *rr_name = NULL; - struct ares_mx_reply *mx_head = NULL; - struct ares_mx_reply *mx_last = NULL; - struct ares_mx_reply *mx_curr; - - /* Set *mx_out to NULL for all failure cases. */ - *mx_out = NULL; - - /* Give up if abuf doesn't have room for a header. */ - if (alen < HFIXEDSZ) - return ARES_EBADRESP; - - /* Fetch the question and answer count from the header. */ - qdcount = DNS_HEADER_QDCOUNT (abuf); - ancount = DNS_HEADER_ANCOUNT (abuf); - if (qdcount != 1) - return ARES_EBADRESP; - if (ancount == 0) - return ARES_ENODATA; - - /* Expand the name from the question, and skip past the question. */ - aptr = abuf + HFIXEDSZ; - status = ares_expand_name (aptr, abuf, alen, &hostname, &len); - if (status != ARES_SUCCESS) - return status; - - if (aptr + len + QFIXEDSZ > abuf + alen) - { - free (hostname); - return ARES_EBADRESP; - } - aptr += len + QFIXEDSZ; - - /* Examine each answer resource record (RR) in turn. */ - for (i = 0; i < ancount; i++) - { - /* Decode the RR up to the data field. */ - status = ares_expand_name (aptr, abuf, alen, &rr_name, &len); - if (status != ARES_SUCCESS) - { - break; - } - aptr += len; - if (aptr + RRFIXEDSZ > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - rr_type = DNS_RR_TYPE (aptr); - rr_class = DNS_RR_CLASS (aptr); - rr_len = DNS_RR_LEN (aptr); - aptr += RRFIXEDSZ; - - /* Check if we are really looking at a MX record */ - if (rr_class == C_IN && rr_type == T_MX) - { - /* parse the MX record itself */ - if (rr_len < 2) - { - status = ARES_EBADRESP; - break; - } - - /* Allocate storage for this MX answer appending it to the list */ - mx_curr = ares_malloc_data(ARES_DATATYPE_MX_REPLY); - if (!mx_curr) - { - status = ARES_ENOMEM; - break; - } - if (mx_last) - { - mx_last->next = mx_curr; - } - else - { - mx_head = mx_curr; - } - mx_last = mx_curr; - - vptr = aptr; - mx_curr->priority = ntohs (*((unsigned short *)vptr)); - vptr += sizeof(unsigned short); - - status = ares_expand_name (vptr, abuf, alen, &mx_curr->host, &len); - if (status != ARES_SUCCESS) - break; - } - - /* Don't lose memory in the next iteration */ - free (rr_name); - rr_name = NULL; - - /* Move on to the next record */ - aptr += rr_len; - } - - if (hostname) - free (hostname); - if (rr_name) - free (rr_name); - - /* clean up on error */ - if (status != ARES_SUCCESS) - { - if (mx_head) - ares_free_data (mx_head); - return status; - } - - /* everything looks fine, return the data */ - *mx_out = mx_head; - - return ARES_SUCCESS; -} diff --git a/deps/uv/c-ares/ares_parse_ns_reply.c b/deps/uv/c-ares/ares_parse_ns_reply.c deleted file mode 100644 index 25c632994a..0000000000 --- a/deps/uv/c-ares/ares_parse_ns_reply.c +++ /dev/null @@ -1,182 +0,0 @@ -/* $Id */ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -/* - * ares_parse_ns_reply created by Vlad Dinulescu - * on behalf of AVIRA Gmbh - http://www.avira.com - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include "ares.h" -#include "ares_dns.h" -#include "ares_private.h" - -int ares_parse_ns_reply( const unsigned char* abuf, int alen, - struct hostent** host ) -{ - unsigned int qdcount, ancount; - int status, i, rr_type, rr_class, rr_len; - int nameservers_num; - long len; - const unsigned char *aptr; - char* hostname, *rr_name, *rr_data, **nameservers; - struct hostent *hostent; - - /* Set *host to NULL for all failure cases. */ - *host = NULL; - - /* Give up if abuf doesn't have room for a header. */ - if ( alen < HFIXEDSZ ) - return ARES_EBADRESP; - - /* Fetch the question and answer count from the header. */ - qdcount = DNS_HEADER_QDCOUNT( abuf ); - ancount = DNS_HEADER_ANCOUNT( abuf ); - if ( qdcount != 1 ) - return ARES_EBADRESP; - - /* Expand the name from the question, and skip past the question. */ - aptr = abuf + HFIXEDSZ; - status = ares__expand_name_for_response( aptr, abuf, alen, &hostname, &len); - if ( status != ARES_SUCCESS ) - return status; - if ( aptr + len + QFIXEDSZ > abuf + alen ) - { - free( hostname ); - return ARES_EBADRESP; - } - aptr += len + QFIXEDSZ; - - /* Allocate nameservers array; ancount gives an upper bound */ - nameservers = malloc( ( ancount + 1 ) * sizeof( char * ) ); - if ( !nameservers ) - { - free( hostname ); - return ARES_ENOMEM; - } - nameservers_num = 0; - - /* Examine each answer resource record (RR) in turn. */ - for ( i = 0; i < ( int ) ancount; i++ ) - { - /* Decode the RR up to the data field. */ - status = ares__expand_name_for_response( aptr, abuf, alen, &rr_name, &len ); - if ( status != ARES_SUCCESS ) - break; - aptr += len; - if ( aptr + RRFIXEDSZ > abuf + alen ) - { - status = ARES_EBADRESP; - break; - } - rr_type = DNS_RR_TYPE( aptr ); - rr_class = DNS_RR_CLASS( aptr ); - rr_len = DNS_RR_LEN( aptr ); - aptr += RRFIXEDSZ; - - if ( rr_class == C_IN && rr_type == T_NS ) - { - /* Decode the RR data and add it to the nameservers list */ - status = ares__expand_name_for_response( aptr, abuf, alen, &rr_data, - &len); - if ( status != ARES_SUCCESS ) - { - break; - } - - nameservers[nameservers_num] = malloc(strlen(rr_data)+1); - - if (nameservers[nameservers_num]==NULL) - { - free(rr_name); - free(rr_data); - status=ARES_ENOMEM; - break; - } - strcpy(nameservers[nameservers_num],rr_data); - free(rr_data); - - nameservers_num++; - } - - free( rr_name ); - - aptr += rr_len; - if ( aptr > abuf + alen ) - { - status = ARES_EBADRESP; - break; - } - } - - if ( status == ARES_SUCCESS && nameservers_num == 0 ) - { - status = ARES_ENODATA; - } - if ( status == ARES_SUCCESS ) - { - /* We got our answer. Allocate memory to build the host entry. */ - nameservers[nameservers_num] = NULL; - hostent = malloc( sizeof( struct hostent ) ); - if ( hostent ) - { - hostent->h_addr_list = malloc( 1 * sizeof( char * ) ); - if ( hostent->h_addr_list ) - { - /* Fill in the hostent and return successfully. */ - hostent->h_name = hostname; - hostent->h_aliases = nameservers; - hostent->h_addrtype = AF_INET; - hostent->h_length = sizeof( struct in_addr ); - hostent->h_addr_list[0] = NULL; - *host = hostent; - return ARES_SUCCESS; - } - free( hostent ); - } - status = ARES_ENOMEM; - } - for ( i = 0; i < nameservers_num; i++ ) - free( nameservers[i] ); - free( nameservers ); - free( hostname ); - return status; -} diff --git a/deps/uv/c-ares/ares_parse_ptr_reply.c b/deps/uv/c-ares/ares_parse_ptr_reply.c deleted file mode 100644 index ccd68a26da..0000000000 --- a/deps/uv/c-ares/ares_parse_ptr_reply.c +++ /dev/null @@ -1,208 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#ifdef HAVE_STRINGS_H -# include -#endif - -#include -#include -#include "ares.h" -#include "ares_dns.h" -#include "ares_private.h" - -int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr, - int addrlen, int family, struct hostent **host) -{ - unsigned int qdcount, ancount; - int status, i, rr_type, rr_class, rr_len; - long len; - const unsigned char *aptr; - char *ptrname, *hostname, *rr_name, *rr_data; - struct hostent *hostent; - int aliascnt = 0; - int alias_alloc = 8; - char ** aliases; - - /* Set *host to NULL for all failure cases. */ - *host = NULL; - - /* Give up if abuf doesn't have room for a header. */ - if (alen < HFIXEDSZ) - return ARES_EBADRESP; - - /* Fetch the question and answer count from the header. */ - qdcount = DNS_HEADER_QDCOUNT(abuf); - ancount = DNS_HEADER_ANCOUNT(abuf); - if (qdcount != 1) - return ARES_EBADRESP; - - /* Expand the name from the question, and skip past the question. */ - aptr = abuf + HFIXEDSZ; - status = ares__expand_name_for_response(aptr, abuf, alen, &ptrname, &len); - if (status != ARES_SUCCESS) - return status; - if (aptr + len + QFIXEDSZ > abuf + alen) - { - free(ptrname); - return ARES_EBADRESP; - } - aptr += len + QFIXEDSZ; - - /* Examine each answer resource record (RR) in turn. */ - hostname = NULL; - aliases = malloc(alias_alloc * sizeof(char *)); - if (!aliases) - { - free(ptrname); - return ARES_ENOMEM; - } - for (i = 0; i < (int)ancount; i++) - { - /* Decode the RR up to the data field. */ - status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); - if (status != ARES_SUCCESS) - break; - aptr += len; - if (aptr + RRFIXEDSZ > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - rr_type = DNS_RR_TYPE(aptr); - rr_class = DNS_RR_CLASS(aptr); - rr_len = DNS_RR_LEN(aptr); - aptr += RRFIXEDSZ; - - if (rr_class == C_IN && rr_type == T_PTR - && strcasecmp(rr_name, ptrname) == 0) - { - /* Decode the RR data and set hostname to it. */ - status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, - &len); - if (status != ARES_SUCCESS) - break; - if (hostname) - free(hostname); - hostname = rr_data; - aliases[aliascnt] = malloc((strlen(rr_data)+1) * sizeof(char *)); - if (!aliases[aliascnt]) - { - status = ARES_ENOMEM; - break; - } - strncpy(aliases[aliascnt], rr_data, strlen(rr_data)+1); - aliascnt++; - if (aliascnt >= alias_alloc) { - char **ptr; - alias_alloc *= 2; - ptr = realloc(aliases, alias_alloc * sizeof(char *)); - if(!ptr) { - status = ARES_ENOMEM; - break; - } - aliases = ptr; - } - } - - if (rr_class == C_IN && rr_type == T_CNAME) - { - /* Decode the RR data and replace ptrname with it. */ - status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, - &len); - if (status != ARES_SUCCESS) - break; - free(ptrname); - ptrname = rr_data; - } - - free(rr_name); - aptr += rr_len; - if (aptr > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - } - - if (status == ARES_SUCCESS && !hostname) - status = ARES_ENODATA; - if (status == ARES_SUCCESS) - { - /* We got our answer. Allocate memory to build the host entry. */ - hostent = malloc(sizeof(struct hostent)); - if (hostent) - { - hostent->h_addr_list = malloc(2 * sizeof(char *)); - if (hostent->h_addr_list) - { - hostent->h_addr_list[0] = malloc(addrlen); - if (hostent->h_addr_list[0]) - { - hostent->h_aliases = malloc((aliascnt+1) * sizeof (char *)); - if (hostent->h_aliases) - { - /* Fill in the hostent and return successfully. */ - hostent->h_name = hostname; - for (i=0 ; ih_aliases[i] = aliases[i]; - hostent->h_aliases[aliascnt] = NULL; - hostent->h_addrtype = family; - hostent->h_length = addrlen; - memcpy(hostent->h_addr_list[0], addr, addrlen); - hostent->h_addr_list[1] = NULL; - *host = hostent; - free(aliases); - free(ptrname); - return ARES_SUCCESS; - } - free(hostent->h_addr_list[0]); - } - free(hostent->h_addr_list); - } - free(hostent); - } - status = ARES_ENOMEM; - } - for (i=0 ; i - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include "ares.h" -#include "ares_dns.h" -#include "ares_data.h" -#include "ares_private.h" - -/* AIX portability check */ -#ifndef T_SRV -# define T_SRV 33 /* server selection */ -#endif - -int -ares_parse_srv_reply (const unsigned char *abuf, int alen, - struct ares_srv_reply **srv_out) -{ - unsigned int qdcount, ancount, i; - const unsigned char *aptr, *vptr; - int status, rr_type, rr_class, rr_len; - long len; - char *hostname = NULL, *rr_name = NULL; - struct ares_srv_reply *srv_head = NULL; - struct ares_srv_reply *srv_last = NULL; - struct ares_srv_reply *srv_curr; - - /* Set *srv_out to NULL for all failure cases. */ - *srv_out = NULL; - - /* Give up if abuf doesn't have room for a header. */ - if (alen < HFIXEDSZ) - return ARES_EBADRESP; - - /* Fetch the question and answer count from the header. */ - qdcount = DNS_HEADER_QDCOUNT (abuf); - ancount = DNS_HEADER_ANCOUNT (abuf); - if (qdcount != 1) - return ARES_EBADRESP; - if (ancount == 0) - return ARES_ENODATA; - - /* Expand the name from the question, and skip past the question. */ - aptr = abuf + HFIXEDSZ; - status = ares_expand_name (aptr, abuf, alen, &hostname, &len); - if (status != ARES_SUCCESS) - return status; - - if (aptr + len + QFIXEDSZ > abuf + alen) - { - free (hostname); - return ARES_EBADRESP; - } - aptr += len + QFIXEDSZ; - - /* Examine each answer resource record (RR) in turn. */ - for (i = 0; i < ancount; i++) - { - /* Decode the RR up to the data field. */ - status = ares_expand_name (aptr, abuf, alen, &rr_name, &len); - if (status != ARES_SUCCESS) - { - break; - } - aptr += len; - if (aptr + RRFIXEDSZ > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - rr_type = DNS_RR_TYPE (aptr); - rr_class = DNS_RR_CLASS (aptr); - rr_len = DNS_RR_LEN (aptr); - aptr += RRFIXEDSZ; - - /* Check if we are really looking at a SRV record */ - if (rr_class == C_IN && rr_type == T_SRV) - { - /* parse the SRV record itself */ - if (rr_len < 6) - { - status = ARES_EBADRESP; - break; - } - - /* Allocate storage for this SRV answer appending it to the list */ - srv_curr = ares_malloc_data(ARES_DATATYPE_SRV_REPLY); - if (!srv_curr) - { - status = ARES_ENOMEM; - break; - } - if (srv_last) - { - srv_last->next = srv_curr; - } - else - { - srv_head = srv_curr; - } - srv_last = srv_curr; - - vptr = aptr; - srv_curr->priority = ntohs (*((unsigned short *)vptr)); - vptr += sizeof(unsigned short); - srv_curr->weight = ntohs (*((unsigned short *)vptr)); - vptr += sizeof(unsigned short); - srv_curr->port = ntohs (*((unsigned short *)vptr)); - vptr += sizeof(unsigned short); - - status = ares_expand_name (vptr, abuf, alen, &srv_curr->host, &len); - if (status != ARES_SUCCESS) - break; - } - - /* Don't lose memory in the next iteration */ - free (rr_name); - rr_name = NULL; - - /* Move on to the next record */ - aptr += rr_len; - } - - if (hostname) - free (hostname); - if (rr_name) - free (rr_name); - - /* clean up on error */ - if (status != ARES_SUCCESS) - { - if (srv_head) - ares_free_data (srv_head); - return status; - } - - /* everything looks fine, return the data */ - *srv_out = srv_head; - - return ARES_SUCCESS; -} diff --git a/deps/uv/c-ares/ares_parse_txt_reply.c b/deps/uv/c-ares/ares_parse_txt_reply.c deleted file mode 100644 index 51653328eb..0000000000 --- a/deps/uv/c-ares/ares_parse_txt_reply.c +++ /dev/null @@ -1,201 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2009 by Jakub Hrozek - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#ifdef HAVE_STRINGS_H -# include -#endif - -#include -#include - -#include "ares.h" -#include "ares_dns.h" -#include "ares_data.h" -#include "ares_private.h" - -int -ares_parse_txt_reply (const unsigned char *abuf, int alen, - struct ares_txt_reply **txt_out) -{ - size_t substr_len, str_len; - unsigned int qdcount, ancount, i; - const unsigned char *aptr; - const unsigned char *strptr; - int status, rr_type, rr_class, rr_len; - long len; - char *hostname = NULL, *rr_name = NULL; - struct ares_txt_reply *txt_head = NULL; - struct ares_txt_reply *txt_last = NULL; - struct ares_txt_reply *txt_curr; - - /* Set *txt_out to NULL for all failure cases. */ - *txt_out = NULL; - - /* Give up if abuf doesn't have room for a header. */ - if (alen < HFIXEDSZ) - return ARES_EBADRESP; - - /* Fetch the question and answer count from the header. */ - qdcount = DNS_HEADER_QDCOUNT (abuf); - ancount = DNS_HEADER_ANCOUNT (abuf); - if (qdcount != 1) - return ARES_EBADRESP; - if (ancount == 0) - return ARES_ENODATA; - - /* Expand the name from the question, and skip past the question. */ - aptr = abuf + HFIXEDSZ; - status = ares_expand_name (aptr, abuf, alen, &hostname, &len); - if (status != ARES_SUCCESS) - return status; - - if (aptr + len + QFIXEDSZ > abuf + alen) - { - free (hostname); - return ARES_EBADRESP; - } - aptr += len + QFIXEDSZ; - - /* Examine each answer resource record (RR) in turn. */ - for (i = 0; i < ancount; i++) - { - /* Decode the RR up to the data field. */ - status = ares_expand_name (aptr, abuf, alen, &rr_name, &len); - if (status != ARES_SUCCESS) - { - break; - } - aptr += len; - if (aptr + RRFIXEDSZ > abuf + alen) - { - status = ARES_EBADRESP; - break; - } - rr_type = DNS_RR_TYPE (aptr); - rr_class = DNS_RR_CLASS (aptr); - rr_len = DNS_RR_LEN (aptr); - aptr += RRFIXEDSZ; - - /* Check if we are really looking at a TXT record */ - if (rr_class == C_IN && rr_type == T_TXT) - { - /* Allocate storage for this TXT answer appending it to the list */ - txt_curr = ares_malloc_data(ARES_DATATYPE_TXT_REPLY); - if (!txt_curr) - { - status = ARES_ENOMEM; - break; - } - if (txt_last) - { - txt_last->next = txt_curr; - } - else - { - txt_head = txt_curr; - } - txt_last = txt_curr; - - /* - * There may be multiple substrings in a single TXT record. Each - * substring may be up to 255 characters in length, with a - * "length byte" indicating the size of the substring payload. - * RDATA contains both the length-bytes and payloads of all - * substrings contained therein. - */ - - /* Compute total length to allow a single memory allocation */ - strptr = aptr; - while (strptr < (aptr + rr_len)) - { - substr_len = (unsigned char)*strptr; - txt_curr->length += substr_len; - strptr += substr_len + 1; - } - - /* Including null byte */ - txt_curr->txt = malloc (txt_curr->length + 1); - if (txt_curr->txt == NULL) - { - status = ARES_ENOMEM; - break; - } - - /* Step through the list of substrings, concatenating them */ - str_len = 0; - strptr = aptr; - while (strptr < (aptr + rr_len)) - { - substr_len = (unsigned char)*strptr; - strptr++; - memcpy ((char *) txt_curr->txt + str_len, strptr, substr_len); - str_len += substr_len; - strptr += substr_len; - } - /* Make sure we NULL-terminate */ - *((char *) txt_curr->txt + txt_curr->length) = '\0'; - } - - /* Don't lose memory in the next iteration */ - free (rr_name); - rr_name = NULL; - - /* Move on to the next record */ - aptr += rr_len; - } - - if (hostname) - free (hostname); - if (rr_name) - free (rr_name); - - /* clean up on error */ - if (status != ARES_SUCCESS) - { - if (txt_head) - ares_free_data (txt_head); - return status; - } - - /* everything looks fine, return the data */ - *txt_out = txt_head; - - return ARES_SUCCESS; -} diff --git a/deps/uv/c-ares/ares_private.h b/deps/uv/c-ares/ares_private.h deleted file mode 100644 index bf21abd825..0000000000 --- a/deps/uv/c-ares/ares_private.h +++ /dev/null @@ -1,351 +0,0 @@ -#ifndef __ARES_PRIVATE_H -#define __ARES_PRIVATE_H - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2004-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -/* - * Define WIN32 when build target is Win32 API - */ - -#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) -#define WIN32 -#endif - -#include -#include - -#ifdef HAVE_NETINET_IN_H -#include -#endif - -#ifdef WATT32 -#include -#include -#define writev(s,v,c) writev_s(s,v,c) -#define HAVE_WRITEV 1 -#endif - -#ifdef NETWARE -#include -#endif - -#define DEFAULT_TIMEOUT 5000 /* milliseconds */ -#define DEFAULT_TRIES 4 -#ifndef INADDR_NONE -#define INADDR_NONE 0xffffffff -#endif - -#if defined(WIN32) && !defined(WATT32) - -#define IS_NT() ((int)GetVersion() > 0) -#define WIN_NS_9X "System\\CurrentControlSet\\Services\\VxD\\MSTCP" -#define WIN_NS_NT_KEY "System\\CurrentControlSet\\Services\\Tcpip\\Parameters" -#define NAMESERVER "NameServer" -#define DHCPNAMESERVER "DhcpNameServer" -#define DATABASEPATH "DatabasePath" -#define WIN_PATH_HOSTS "\\hosts" - -#elif defined(WATT32) - -#define PATH_RESOLV_CONF "/dev/ENV/etc/resolv.conf" - -#elif defined(NETWARE) - -#define PATH_RESOLV_CONF "sys:/etc/resolv.cfg" -#define PATH_HOSTS "sys:/etc/hosts" - -#elif defined(__riscos__) - -#define PATH_HOSTS "InetDBase:Hosts" - -#else - -#define PATH_RESOLV_CONF "/etc/resolv.conf" -#ifdef ETC_INET -#define PATH_HOSTS "/etc/inet/hosts" -#else -#define PATH_HOSTS "/etc/hosts" -#endif - -#endif - -#define ARES_ID_KEY_LEN 31 - -#include "ares_ipv6.h" -#include "ares_llist.h" - -#ifndef HAVE_STRDUP -# include "ares_strdup.h" -# define strdup(ptr) ares_strdup(ptr) -#endif - -#ifndef HAVE_STRCASECMP -# include "ares_strcasecmp.h" -# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) -#endif - -#ifndef HAVE_STRNCASECMP -# include "ares_strcasecmp.h" -# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) -#endif - -#ifndef HAVE_WRITEV -# include "ares_writev.h" -# define writev(s,ptr,cnt) ares_writev(s,ptr,cnt) -#endif - -struct ares_addr { - int family; - union { - struct in_addr addr4; - struct ares_in6_addr addr6; - } addr; -}; -#define addrV4 addr.addr4 -#define addrV6 addr.addr6 - -struct query; - -struct send_request { - /* Remaining data to send */ - const unsigned char *data; - size_t len; - - /* The query for which we're sending this data */ - struct query* owner_query; - /* The buffer we're using, if we have our own copy of the packet */ - unsigned char *data_storage; - - /* Next request in queue */ - struct send_request *next; -}; - -struct server_state { - struct ares_addr addr; - ares_socket_t udp_socket; - ares_socket_t tcp_socket; - - /* Mini-buffer for reading the length word */ - unsigned char tcp_lenbuf[2]; - int tcp_lenbuf_pos; - int tcp_length; - - /* Buffer for reading actual TCP data */ - unsigned char *tcp_buffer; - int tcp_buffer_pos; - - /* TCP output queue */ - struct send_request *qhead; - struct send_request *qtail; - - /* Which incarnation of this connection is this? We don't want to - * retransmit requests into the very same socket, but if the server - * closes on us and we re-open the connection, then we do want to - * re-send. */ - int tcp_connection_generation; - - /* Circular, doubly-linked list of outstanding queries to this server */ - struct list_node queries_to_server; - - /* Link back to owning channel */ - ares_channel channel; - - /* Is this server broken? We mark connections as broken when a - * request that is queued for sending times out. - */ - int is_broken; -}; - -/* State to represent a DNS query */ -struct query { - /* Query ID from qbuf, for faster lookup, and current timeout */ - unsigned short qid; - struct timeval timeout; - - /* - * Links for the doubly-linked lists in which we insert a query. - * These circular, doubly-linked lists that are hash-bucketed based - * the attributes we care about, help making most important - * operations O(1). - */ - struct list_node queries_by_qid; /* hopefully in same cache line as qid */ - struct list_node queries_by_timeout; - struct list_node queries_to_server; - struct list_node all_queries; - - /* Query buf with length at beginning, for TCP transmission */ - unsigned char *tcpbuf; - int tcplen; - - /* Arguments passed to ares_send() (qbuf points into tcpbuf) */ - const unsigned char *qbuf; - int qlen; - ares_callback callback; - void *arg; - - /* Query status */ - int try; /* Number of times we tried this query already. */ - int server; /* Server this query has last been sent to. */ - struct query_server_info *server_info; /* per-server state */ - int using_tcp; - int error_status; - int timeouts; /* number of timeouts we saw for this request */ -}; - -/* Per-server state for a query */ -struct query_server_info { - int skip_server; /* should we skip server, due to errors, etc? */ - int tcp_connection_generation; /* into which TCP connection did we send? */ -}; - -/* An IP address pattern; matches an IP address X if X & mask == addr */ -#define PATTERN_MASK 0x1 -#define PATTERN_CIDR 0x2 - -struct apattern { - union - { - struct in_addr addr4; - struct ares_in6_addr addr6; - } addr; - union - { - struct in_addr addr4; - struct ares_in6_addr addr6; - unsigned short bits; - } mask; - int family; - unsigned short type; -}; - -typedef struct rc4_key -{ - unsigned char state[256]; - unsigned char x; - unsigned char y; -} rc4_key; - -struct ares_channeldata { - /* Configuration data */ - int flags; - int timeout; /* in milliseconds */ - int tries; - int ndots; - int rotate; /* if true, all servers specified are used */ - int udp_port; - int tcp_port; - int socket_send_buffer_size; - int socket_receive_buffer_size; - char **domains; - int ndomains; - struct apattern *sortlist; - int nsort; - char *lookups; - - /* For binding to local devices and/or IP addresses. Leave - * them null/zero for no binding. - */ - char local_dev_name[32]; - unsigned int local_ip4; - unsigned char local_ip6[16]; - - int optmask; /* the option bitfield passed in at init time */ - - /* Server addresses and communications state */ - struct server_state *servers; - int nservers; - - /* ID to use for next query */ - unsigned short next_id; - /* key to use when generating new ids */ - rc4_key id_key; - - /* Generation number to use for the next TCP socket open/close */ - int tcp_connection_generation; - - /* The time at which we last called process_timeouts(). Uses integer seconds - just to draw the line somewhere. */ - time_t last_timeout_processed; - - /* Last server we sent a query to. */ - int last_server; - - /* Circular, doubly-linked list of queries, bucketed various ways.... */ - /* All active queries in a single list: */ - struct list_node all_queries; - /* Queries bucketed by qid, for quickly dispatching DNS responses: */ -#define ARES_QID_TABLE_SIZE 2048 - struct list_node queries_by_qid[ARES_QID_TABLE_SIZE]; - /* Queries bucketed by timeout, for quickly handling timeouts: */ -#define ARES_TIMEOUT_TABLE_SIZE 1024 - struct list_node queries_by_timeout[ARES_TIMEOUT_TABLE_SIZE]; - - ares_sock_state_cb sock_state_cb; - void *sock_state_cb_data; - - ares_sock_create_callback sock_create_cb; - void *sock_create_cb_data; -}; - -/* return true if now is exactly check time or later */ -int ares__timedout(struct timeval *now, - struct timeval *check); -/* add the specific number of milliseconds to the time in the first argument */ -int ares__timeadd(struct timeval *now, - int millisecs); -/* return time offset between now and (future) check, in milliseconds */ -long ares__timeoffset(struct timeval *now, - struct timeval *check); -/* returns ARES_SUCCESS if library has been initialized */ -int ares_library_initialized(void); -void ares__rc4(rc4_key* key,unsigned char *buffer_ptr, int buffer_len); -void ares__send_query(ares_channel channel, struct query *query, - struct timeval *now); -void ares__close_sockets(ares_channel channel, struct server_state *server); -int ares__get_hostent(FILE *fp, int family, struct hostent **host); -int ares__read_line(FILE *fp, char **buf, size_t *bufsize); -void ares__free_query(struct query *query); -unsigned short ares__generate_new_id(rc4_key* key); -struct timeval ares__tvnow(void); -int ares__expand_name_for_response(const unsigned char *encoded, - const unsigned char *abuf, int alen, - char **s, long *enclen); -void ares__init_servers_state(ares_channel channel); -void ares__destroy_servers_state(ares_channel channel); -#if 0 /* Not used */ -long ares__tvdiff(struct timeval t1, struct timeval t2); -#endif - -#define ARES_SWAP_BYTE(a,b) \ - { unsigned char swapByte = *(a); *(a) = *(b); *(b) = swapByte; } - -#define SOCK_STATE_CALLBACK(c, s, r, w) \ - do { \ - if ((c)->sock_state_cb) \ - (c)->sock_state_cb((c)->sock_state_cb_data, (s), (r), (w)); \ - } while (0) - -#ifdef CURLDEBUG -/* This is low-level hard-hacking memory leak tracking and similar. Using the - libcurl lowlevel code from within library is ugly and only works when - c-ares is built and linked with a similarly curldebug-enabled libcurl, - but we do this anyway for convenience. */ -#include "../lib/memdebug.h" -#endif - -#endif /* __ARES_PRIVATE_H */ diff --git a/deps/uv/c-ares/ares_process.c b/deps/uv/c-ares/ares_process.c deleted file mode 100644 index 7d04effa8a..0000000000 --- a/deps/uv/c-ares/ares_process.c +++ /dev/null @@ -1,1296 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2004-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_SYS_UIO_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_NETINET_TCP_H -# include -#endif -#ifdef HAVE_NETDB_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#ifdef HAVE_SYS_TIME_H -# include -#endif - -#ifdef HAVE_STRINGS_H -# include -#endif -#ifdef HAVE_UNISTD_H -# include -#endif -#ifdef HAVE_SYS_IOCTL_H -# include -#endif -#ifdef NETWARE -# include -#endif - -#include -#include -#include -#include -#include -#include - -#include "ares.h" -#include "ares_dns.h" -#include "ares_private.h" - - -static int try_again(int errnum); -static void write_tcp_data(ares_channel channel, fd_set *write_fds, - ares_socket_t write_fd, struct timeval *now); -static void read_tcp_data(ares_channel channel, fd_set *read_fds, - ares_socket_t read_fd, struct timeval *now); -static void read_udp_packets(ares_channel channel, fd_set *read_fds, - ares_socket_t read_fd, struct timeval *now); -static void advance_tcp_send_queue(ares_channel channel, int whichserver, - ssize_t num_bytes); -static void process_timeouts(ares_channel channel, struct timeval *now); -static void process_broken_connections(ares_channel channel, - struct timeval *now); -static void process_answer(ares_channel channel, unsigned char *abuf, - int alen, int whichserver, int tcp, - struct timeval *now); -static void handle_error(ares_channel channel, int whichserver, - struct timeval *now); -static void skip_server(ares_channel channel, struct query *query, - int whichserver); -static void next_server(ares_channel channel, struct query *query, - struct timeval *now); -static int open_tcp_socket(ares_channel channel, struct server_state *server); -static int open_udp_socket(ares_channel channel, struct server_state *server); -static int same_questions(const unsigned char *qbuf, int qlen, - const unsigned char *abuf, int alen); -static int same_address(struct sockaddr *sa, struct ares_addr *aa); -static void end_query(ares_channel channel, struct query *query, int status, - unsigned char *abuf, int alen); - -/* return true if now is exactly check time or later */ -int ares__timedout(struct timeval *now, - struct timeval *check) -{ - long secs = (now->tv_sec - check->tv_sec); - - if(secs > 0) - return 1; /* yes, timed out */ - if(secs < 0) - return 0; /* nope, not timed out */ - - /* if the full seconds were identical, check the sub second parts */ - return (now->tv_usec - check->tv_usec >= 0); -} - -/* add the specific number of milliseconds to the time in the first argument */ -int ares__timeadd(struct timeval *now, - int millisecs) -{ - now->tv_sec += millisecs/1000; - now->tv_usec += (millisecs%1000)*1000; - - if(now->tv_usec >= 1000000) { - ++(now->tv_sec); - now->tv_usec -= 1000000; - } - - return 0; -} - -/* return time offset between now and (future) check, in milliseconds */ -long ares__timeoffset(struct timeval *now, - struct timeval *check) -{ - return (check->tv_sec - now->tv_sec)*1000 + - (check->tv_usec - now->tv_usec)/1000; -} - - -/* - * generic process function - */ -static void processfds(ares_channel channel, - fd_set *read_fds, ares_socket_t read_fd, - fd_set *write_fds, ares_socket_t write_fd) -{ - struct timeval now = ares__tvnow(); - - write_tcp_data(channel, write_fds, write_fd, &now); - read_tcp_data(channel, read_fds, read_fd, &now); - read_udp_packets(channel, read_fds, read_fd, &now); - process_timeouts(channel, &now); - process_broken_connections(channel, &now); -} - -/* Something interesting happened on the wire, or there was a timeout. - * See what's up and respond accordingly. - */ -void ares_process(ares_channel channel, fd_set *read_fds, fd_set *write_fds) -{ - processfds(channel, read_fds, ARES_SOCKET_BAD, write_fds, ARES_SOCKET_BAD); -} - -/* Something interesting happened on the wire, or there was a timeout. - * See what's up and respond accordingly. - */ -void ares_process_fd(ares_channel channel, - ares_socket_t read_fd, /* use ARES_SOCKET_BAD or valid - file descriptors */ - ares_socket_t write_fd) -{ - processfds(channel, NULL, read_fd, NULL, write_fd); -} - - -/* Return 1 if the specified error number describes a readiness error, or 0 - * otherwise. This is mostly for HP-UX, which could return EAGAIN or - * EWOULDBLOCK. See this man page - * - * http://devrsrc1.external.hp.com/STKS/cgi-bin/man2html? - * manpage=/usr/share/man/man2.Z/send.2 - */ -static int try_again(int errnum) -{ -#if !defined EWOULDBLOCK && !defined EAGAIN -#error "Neither EWOULDBLOCK nor EAGAIN defined" -#endif - switch (errnum) - { -#ifdef EWOULDBLOCK - case EWOULDBLOCK: - return 1; -#endif -#if defined EAGAIN && EAGAIN != EWOULDBLOCK - case EAGAIN: - return 1; -#endif - } - return 0; -} - -/* If any TCP sockets select true for writing, write out queued data - * we have for them. - */ -static void write_tcp_data(ares_channel channel, - fd_set *write_fds, - ares_socket_t write_fd, - struct timeval *now) -{ - struct server_state *server; - struct send_request *sendreq; - struct iovec *vec; - int i; - ssize_t scount; - ssize_t wcount; - size_t n; - - if(!write_fds && (write_fd == ARES_SOCKET_BAD)) - /* no possible action */ - return; - - for (i = 0; i < channel->nservers; i++) - { - /* Make sure server has data to send and is selected in write_fds or - write_fd. */ - server = &channel->servers[i]; - if (!server->qhead || server->tcp_socket == ARES_SOCKET_BAD || - server->is_broken) - continue; - - if(write_fds) { - if(!FD_ISSET(server->tcp_socket, write_fds)) - continue; - } - else { - if(server->tcp_socket != write_fd) - continue; - } - - if(write_fds) - /* If there's an error and we close this socket, then open - * another with the same fd to talk to another server, then we - * don't want to think that it was the new socket that was - * ready. This is not disastrous, but is likely to result in - * extra system calls and confusion. */ - FD_CLR(server->tcp_socket, write_fds); - - /* Count the number of send queue items. */ - n = 0; - for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) - n++; - - /* Allocate iovecs so we can send all our data at once. */ - vec = malloc(n * sizeof(struct iovec)); - if (vec) - { - /* Fill in the iovecs and send. */ - n = 0; - for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) - { - vec[n].iov_base = (char *) sendreq->data; - vec[n].iov_len = sendreq->len; - n++; - } - wcount = (ssize_t)writev(server->tcp_socket, vec, (int)n); - free(vec); - if (wcount < 0) - { - if (!try_again(SOCKERRNO)) - handle_error(channel, i, now); - continue; - } - - /* Advance the send queue by as many bytes as we sent. */ - advance_tcp_send_queue(channel, i, wcount); - } - else - { - /* Can't allocate iovecs; just send the first request. */ - sendreq = server->qhead; - - scount = swrite(server->tcp_socket, sendreq->data, sendreq->len); - if (scount < 0) - { - if (!try_again(SOCKERRNO)) - handle_error(channel, i, now); - continue; - } - - /* Advance the send queue by as many bytes as we sent. */ - advance_tcp_send_queue(channel, i, scount); - } - } -} - -/* Consume the given number of bytes from the head of the TCP send queue. */ -static void advance_tcp_send_queue(ares_channel channel, int whichserver, - ssize_t num_bytes) -{ - struct send_request *sendreq; - struct server_state *server = &channel->servers[whichserver]; - while (num_bytes > 0) - { - sendreq = server->qhead; - if ((size_t)num_bytes >= sendreq->len) - { - num_bytes -= sendreq->len; - server->qhead = sendreq->next; - if (server->qhead == NULL) - { - SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 0); - server->qtail = NULL; - } - if (sendreq->data_storage != NULL) - free(sendreq->data_storage); - free(sendreq); - } - else - { - sendreq->data += num_bytes; - sendreq->len -= num_bytes; - num_bytes = 0; - } - } -} - -/* If any TCP socket selects true for reading, read some data, - * allocate a buffer if we finish reading the length word, and process - * a packet if we finish reading one. - */ -static void read_tcp_data(ares_channel channel, fd_set *read_fds, - ares_socket_t read_fd, struct timeval *now) -{ - struct server_state *server; - int i; - ssize_t count; - - if(!read_fds && (read_fd == ARES_SOCKET_BAD)) - /* no possible action */ - return; - - for (i = 0; i < channel->nservers; i++) - { - /* Make sure the server has a socket and is selected in read_fds. */ - server = &channel->servers[i]; - if (server->tcp_socket == ARES_SOCKET_BAD || server->is_broken) - continue; - - if(read_fds) { - if(!FD_ISSET(server->tcp_socket, read_fds)) - continue; - } - else { - if(server->tcp_socket != read_fd) - continue; - } - - if(read_fds) - /* If there's an error and we close this socket, then open - * another with the same fd to talk to another server, then we - * don't want to think that it was the new socket that was - * ready. This is not disastrous, but is likely to result in - * extra system calls and confusion. */ - FD_CLR(server->tcp_socket, read_fds); - - if (server->tcp_lenbuf_pos != 2) - { - /* We haven't yet read a length word, so read that (or - * what's left to read of it). - */ - count = sread(server->tcp_socket, - server->tcp_lenbuf + server->tcp_lenbuf_pos, - 2 - server->tcp_lenbuf_pos); - if (count <= 0) - { - if (!(count == -1 && try_again(SOCKERRNO))) - handle_error(channel, i, now); - continue; - } - - server->tcp_lenbuf_pos += (int)count; - if (server->tcp_lenbuf_pos == 2) - { - /* We finished reading the length word. Decode the - * length and allocate a buffer for the data. - */ - server->tcp_length = server->tcp_lenbuf[0] << 8 - | server->tcp_lenbuf[1]; - server->tcp_buffer = malloc(server->tcp_length); - if (!server->tcp_buffer) - handle_error(channel, i, now); - server->tcp_buffer_pos = 0; - } - } - else - { - /* Read data into the allocated buffer. */ - count = sread(server->tcp_socket, - server->tcp_buffer + server->tcp_buffer_pos, - server->tcp_length - server->tcp_buffer_pos); - if (count <= 0) - { - if (!(count == -1 && try_again(SOCKERRNO))) - handle_error(channel, i, now); - continue; - } - - server->tcp_buffer_pos += (int)count; - if (server->tcp_buffer_pos == server->tcp_length) - { - /* We finished reading this answer; process it and - * prepare to read another length word. - */ - process_answer(channel, server->tcp_buffer, server->tcp_length, - i, 1, now); - if (server->tcp_buffer) - free(server->tcp_buffer); - server->tcp_buffer = NULL; - server->tcp_lenbuf_pos = 0; - server->tcp_buffer_pos = 0; - } - } - } -} - -/* If any UDP sockets select true for reading, process them. */ -static void read_udp_packets(ares_channel channel, fd_set *read_fds, - ares_socket_t read_fd, struct timeval *now) -{ - struct server_state *server; - int i; - ssize_t count; - unsigned char buf[PACKETSZ + 1]; -#ifdef HAVE_RECVFROM - ares_socklen_t fromlen; - union { - struct sockaddr sa; - struct sockaddr_in sa4; - struct sockaddr_in6 sa6; - } from; -#endif - - if(!read_fds && (read_fd == ARES_SOCKET_BAD)) - /* no possible action */ - return; - - for (i = 0; i < channel->nservers; i++) - { - /* Make sure the server has a socket and is selected in read_fds. */ - server = &channel->servers[i]; - - if (server->udp_socket == ARES_SOCKET_BAD || server->is_broken) - continue; - - if(read_fds) { - if(!FD_ISSET(server->udp_socket, read_fds)) - continue; - } - else { - if(server->udp_socket != read_fd) - continue; - } - - if(read_fds) - /* If there's an error and we close this socket, then open - * another with the same fd to talk to another server, then we - * don't want to think that it was the new socket that was - * ready. This is not disastrous, but is likely to result in - * extra system calls and confusion. */ - FD_CLR(server->udp_socket, read_fds); - - /* To reduce event loop overhead, read and process as many - * packets as we can. */ - do { -#ifdef HAVE_RECVFROM - if (server->addr.family == AF_INET) - fromlen = sizeof(from.sa4); - else - fromlen = sizeof(from.sa6); - count = (ssize_t)recvfrom(server->udp_socket, (void *)buf, sizeof(buf), - 0, &from.sa, &fromlen); -#else - count = sread(server->udp_socket, buf, sizeof(buf)); -#endif - if (count == -1 && try_again(SOCKERRNO)) - continue; - else if (count <= 0) - handle_error(channel, i, now); -#ifdef HAVE_RECVFROM - else if (!same_address(&from.sa, &server->addr)) - /* The address the response comes from does not match - * the address we sent the request to. Someone may be - * attempting to perform a cache poisoning attack. */ - break; -#endif - else - process_answer(channel, buf, (int)count, i, 0, now); - } while (count > 0); - } -} - -/* If any queries have timed out, note the timeout and move them on. */ -static void process_timeouts(ares_channel channel, struct timeval *now) -{ - time_t t; /* the time of the timeouts we're processing */ - struct query *query; - struct list_node* list_head; - struct list_node* list_node; - - /* Process all the timeouts that have fired since the last time we - * processed timeouts. If things are going well, then we'll have - * hundreds/thousands of queries that fall into future buckets, and - * only a handful of requests that fall into the "now" bucket, so - * this should be quite quick. - */ - for (t = channel->last_timeout_processed; t <= now->tv_sec; t++) - { - list_head = &(channel->queries_by_timeout[t % ARES_TIMEOUT_TABLE_SIZE]); - for (list_node = list_head->next; list_node != list_head; ) - { - query = list_node->data; - list_node = list_node->next; /* in case the query gets deleted */ - if (query->timeout.tv_sec && ares__timedout(now, &query->timeout)) - { - query->error_status = ARES_ETIMEOUT; - ++query->timeouts; - next_server(channel, query, now); - } - } - } - channel->last_timeout_processed = now->tv_sec; -} - -/* Handle an answer from a server. */ -static void process_answer(ares_channel channel, unsigned char *abuf, - int alen, int whichserver, int tcp, - struct timeval *now) -{ - int tc, rcode; - unsigned short id; - struct query *query; - struct list_node* list_head; - struct list_node* list_node; - - /* If there's no room in the answer for a header, we can't do much - * with it. */ - if (alen < HFIXEDSZ) - return; - - /* Grab the query ID, truncate bit, and response code from the packet. */ - id = DNS_HEADER_QID(abuf); - tc = DNS_HEADER_TC(abuf); - rcode = DNS_HEADER_RCODE(abuf); - - /* Find the query corresponding to this packet. The queries are - * hashed/bucketed by query id, so this lookup should be quick. - * Note that both the query id and the questions must be the same; - * when the query id wraps around we can have multiple outstanding - * queries with the same query id, so we need to check both the id and - * question. - */ - query = NULL; - list_head = &(channel->queries_by_qid[id % ARES_QID_TABLE_SIZE]); - for (list_node = list_head->next; list_node != list_head; - list_node = list_node->next) - { - struct query *q = list_node->data; - if ((q->qid == id) && same_questions(q->qbuf, q->qlen, abuf, alen)) - { - query = q; - break; - } - } - if (!query) - return; - - /* If we got a truncated UDP packet and are not ignoring truncation, - * don't accept the packet, and switch the query to TCP if we hadn't - * done so already. - */ - if ((tc || alen > PACKETSZ) && !tcp && !(channel->flags & ARES_FLAG_IGNTC)) - { - if (!query->using_tcp) - { - query->using_tcp = 1; - ares__send_query(channel, query, now); - } - return; - } - - /* Limit alen to PACKETSZ if we aren't using TCP (only relevant if we - * are ignoring truncation. - */ - if (alen > PACKETSZ && !tcp) - alen = PACKETSZ; - - /* If we aren't passing through all error packets, discard packets - * with SERVFAIL, NOTIMP, or REFUSED response codes. - */ - if (!(channel->flags & ARES_FLAG_NOCHECKRESP)) - { - if (rcode == SERVFAIL || rcode == NOTIMP || rcode == REFUSED) - { - skip_server(channel, query, whichserver); - if (query->server == whichserver) - next_server(channel, query, now); - return; - } - } - - end_query(channel, query, ARES_SUCCESS, abuf, alen); -} - -/* Close all the connections that are no longer usable. */ -static void process_broken_connections(ares_channel channel, - struct timeval *now) -{ - int i; - for (i = 0; i < channel->nservers; i++) - { - struct server_state *server = &channel->servers[i]; - if (server->is_broken) - { - handle_error(channel, i, now); - } - } -} - -static void handle_error(ares_channel channel, int whichserver, - struct timeval *now) -{ - struct server_state *server; - struct query *query; - struct list_node list_head; - struct list_node* list_node; - - server = &channel->servers[whichserver]; - - /* Reset communications with this server. */ - ares__close_sockets(channel, server); - - /* Tell all queries talking to this server to move on and not try - * this server again. We steal the current list of queries that were - * in-flight to this server, since when we call next_server this can - * cause the queries to be re-sent to this server, which will - * re-insert these queries in that same server->queries_to_server - * list. - */ - ares__init_list_head(&list_head); - ares__swap_lists(&list_head, &(server->queries_to_server)); - for (list_node = list_head.next; list_node != &list_head; ) - { - query = list_node->data; - list_node = list_node->next; /* in case the query gets deleted */ - assert(query->server == whichserver); - skip_server(channel, query, whichserver); - next_server(channel, query, now); - } - /* Each query should have removed itself from our temporary list as - * it re-sent itself or finished up... - */ - assert(ares__is_list_empty(&list_head)); -} - -static void skip_server(ares_channel channel, struct query *query, - int whichserver) { - /* The given server gave us problems with this query, so if we have - * the luxury of using other servers, then let's skip the - * potentially broken server and just use the others. If we only - * have one server and we need to retry then we should just go ahead - * and re-use that server, since it's our only hope; perhaps we - * just got unlucky, and retrying will work (eg, the server timed - * out our TCP connection just as we were sending another request). - */ - if (channel->nservers > 1) - { - query->server_info[whichserver].skip_server = 1; - } -} - -static void next_server(ares_channel channel, struct query *query, - struct timeval *now) -{ - /* We need to try each server channel->tries times. We have channel->nservers - * servers to try. In total, we need to do channel->nservers * channel->tries - * attempts. Use query->try to remember how many times we already attempted - * this query. Use modular arithmetic to find the next server to try. */ - while (++(query->try) < (channel->nservers * channel->tries)) - { - struct server_state *server; - - /* Move on to the next server. */ - query->server = (query->server + 1) % channel->nservers; - server = &channel->servers[query->server]; - - /* We don't want to use this server if (1) we decided this - * connection is broken, and thus about to be closed, (2) - * we've decided to skip this server because of earlier - * errors we encountered, or (3) we already sent this query - * over this exact connection. - */ - if (!server->is_broken && - !query->server_info[query->server].skip_server && - !(query->using_tcp && - (query->server_info[query->server].tcp_connection_generation == - server->tcp_connection_generation))) - { - ares__send_query(channel, query, now); - return; - } - - /* You might think that with TCP we only need one try. However, - * even when using TCP, servers can time-out our connection just - * as we're sending a request, or close our connection because - * they die, or never send us a reply because they get wedged or - * tickle a bug that drops our request. - */ - } - - /* If we are here, all attempts to perform query failed. */ - end_query(channel, query, query->error_status, NULL, 0); -} - -void ares__send_query(ares_channel channel, struct query *query, - struct timeval *now) -{ - struct send_request *sendreq; - struct server_state *server; - int timeplus; - - server = &channel->servers[query->server]; - if (query->using_tcp) - { - /* Make sure the TCP socket for this server is set up and queue - * a send request. - */ - if (server->tcp_socket == ARES_SOCKET_BAD) - { - if (open_tcp_socket(channel, server) == -1) - { - skip_server(channel, query, query->server); - next_server(channel, query, now); - return; - } - } - sendreq = calloc(1, sizeof(struct send_request)); - if (!sendreq) - { - end_query(channel, query, ARES_ENOMEM, NULL, 0); - return; - } - /* To make the common case fast, we avoid copies by using the - * query's tcpbuf for as long as the query is alive. In the rare - * case where the query ends while it's queued for transmission, - * then we give the sendreq its own copy of the request packet - * and put it in sendreq->data_storage. - */ - sendreq->data_storage = NULL; - sendreq->data = query->tcpbuf; - sendreq->len = query->tcplen; - sendreq->owner_query = query; - sendreq->next = NULL; - if (server->qtail) - server->qtail->next = sendreq; - else - { - SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 1); - server->qhead = sendreq; - } - server->qtail = sendreq; - query->server_info[query->server].tcp_connection_generation = - server->tcp_connection_generation; - } - else - { - if (server->udp_socket == ARES_SOCKET_BAD) - { - if (open_udp_socket(channel, server) == -1) - { - skip_server(channel, query, query->server); - next_server(channel, query, now); - return; - } - } - if (swrite(server->udp_socket, query->qbuf, query->qlen) == -1) - { - /* FIXME: Handle EAGAIN here since it likely can happen. */ - skip_server(channel, query, query->server); - next_server(channel, query, now); - return; - } - } - timeplus = channel->timeout << (query->try / channel->nservers); - timeplus = (timeplus * (9 + (rand () & 7))) / 16; - query->timeout = *now; - ares__timeadd(&query->timeout, - timeplus); - /* Keep track of queries bucketed by timeout, so we can process - * timeout events quickly. - */ - ares__remove_from_list(&(query->queries_by_timeout)); - ares__insert_in_list( - &(query->queries_by_timeout), - &(channel->queries_by_timeout[query->timeout.tv_sec % - ARES_TIMEOUT_TABLE_SIZE])); - - /* Keep track of queries bucketed by server, so we can process server - * errors quickly. - */ - ares__remove_from_list(&(query->queries_to_server)); - ares__insert_in_list(&(query->queries_to_server), - &(server->queries_to_server)); -} - -/* - * setsocknonblock sets the given socket to either blocking or non-blocking - * mode based on the 'nonblock' boolean argument. This function is highly - * portable. - */ -static int setsocknonblock(ares_socket_t sockfd, /* operate on this */ - int nonblock /* TRUE or FALSE */) -{ -#if defined(USE_BLOCKING_SOCKETS) - - return 0; /* returns success */ - -#elif defined(HAVE_FCNTL_O_NONBLOCK) - - /* most recent unix versions */ - int flags; - flags = fcntl(sockfd, F_GETFL, 0); - if (FALSE != nonblock) - return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK); - else - return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK)); - -#elif defined(HAVE_IOCTL_FIONBIO) - - /* older unix versions */ - int flags; - flags = nonblock; - return ioctl(sockfd, FIONBIO, &flags); - -#elif defined(HAVE_IOCTLSOCKET_FIONBIO) - -#ifdef WATT32 - char flags; -#else - /* Windows */ - unsigned long flags; -#endif - flags = nonblock; - return ioctlsocket(sockfd, FIONBIO, &flags); - -#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO) - - /* Amiga */ - return IoctlSocket(sockfd, FIONBIO, (long)nonblock); - -#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK) - - /* BeOS */ - long b = nonblock ? 1 : 0; - return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b)); - -#else -# error "no non-blocking method was found/used/set" -#endif -} - -static int configure_socket(ares_socket_t s, int family, ares_channel channel) -{ - union { - struct sockaddr sa; - struct sockaddr_in sa4; - struct sockaddr_in6 sa6; - } local; - - setsocknonblock(s, TRUE); - -#if defined(FD_CLOEXEC) && !defined(MSDOS) - /* Configure the socket fd as close-on-exec. */ - if (fcntl(s, F_SETFD, FD_CLOEXEC) == -1) - return -1; -#endif - - /* Set the socket's send and receive buffer sizes. */ - if ((channel->socket_send_buffer_size > 0) && - setsockopt(s, SOL_SOCKET, SO_SNDBUF, - (void *)&channel->socket_send_buffer_size, - sizeof(channel->socket_send_buffer_size)) == -1) - return -1; - - if ((channel->socket_receive_buffer_size > 0) && - setsockopt(s, SOL_SOCKET, SO_RCVBUF, - (void *)&channel->socket_receive_buffer_size, - sizeof(channel->socket_receive_buffer_size)) == -1) - return -1; - -#ifdef SO_BINDTODEVICE - if (channel->local_dev_name[0]) { - if (setsockopt(s, SOL_SOCKET, SO_BINDTODEVICE, - channel->local_dev_name, sizeof(channel->local_dev_name))) { - /* Only root can do this, and usually not fatal if it doesn't work, so */ - /* just continue on. */ - } - } -#endif - - if (family == AF_INET) { - if (channel->local_ip4) { - memset(&local.sa4, 0, sizeof(local.sa4)); - local.sa4.sin_family = AF_INET; - local.sa4.sin_addr.s_addr = htonl(channel->local_ip4); - if (bind(s, &local.sa, sizeof(local.sa4)) < 0) - return -1; - } - } - else if (family == AF_INET6) { - if (memcmp(channel->local_ip6, &ares_in6addr_any, sizeof(channel->local_ip6)) != 0) { - memset(&local.sa6, 0, sizeof(local.sa6)); - local.sa6.sin6_family = AF_INET6; - memcpy(&local.sa6.sin6_addr, channel->local_ip6, sizeof(channel->local_ip6)); - if (bind(s, &local.sa, sizeof(local.sa6)) < 0) - return -1; - } - } - - return 0; -} - -static int open_tcp_socket(ares_channel channel, struct server_state *server) -{ - ares_socket_t s; - int opt; - ares_socklen_t salen; - union { - struct sockaddr_in sa4; - struct sockaddr_in6 sa6; - } saddr; - struct sockaddr *sa; - - switch (server->addr.family) - { - case AF_INET: - sa = (void *)&saddr.sa4; - salen = sizeof(saddr.sa4); - memset(sa, 0, salen); - saddr.sa4.sin_family = AF_INET; - saddr.sa4.sin_port = (unsigned short)(channel->tcp_port & 0xffff); - memcpy(&saddr.sa4.sin_addr, &server->addr.addrV4, - sizeof(server->addr.addrV4)); - break; - case AF_INET6: - sa = (void *)&saddr.sa6; - salen = sizeof(saddr.sa6); - memset(sa, 0, salen); - saddr.sa6.sin6_family = AF_INET6; - saddr.sa6.sin6_port = (unsigned short)(channel->tcp_port & 0xffff); - memcpy(&saddr.sa6.sin6_addr, &server->addr.addrV6, - sizeof(server->addr.addrV6)); - break; - default: - return -1; - } - - /* Acquire a socket. */ - s = socket(server->addr.family, SOCK_STREAM, 0); - if (s == ARES_SOCKET_BAD) - return -1; - - /* Configure it. */ - if (configure_socket(s, server->addr.family, channel) < 0) - { - sclose(s); - return -1; - } - -#ifdef TCP_NODELAY - /* - * Disable the Nagle algorithm (only relevant for TCP sockets, and thus not - * in configure_socket). In general, in DNS lookups we're pretty much - * interested in firing off a single request and then waiting for a reply, - * so batching isn't very interesting. - */ - opt = 1; - if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, - (void *)&opt, sizeof(opt)) == -1) - { - sclose(s); - return -1; - } -#endif - - /* Connect to the server. */ - if (connect(s, sa, salen) == -1) - { - int err = SOCKERRNO; - - if (err != EINPROGRESS && err != EWOULDBLOCK) - { - sclose(s); - return -1; - } - } - - if (channel->sock_create_cb) - { - int err = channel->sock_create_cb(s, SOCK_STREAM, - channel->sock_create_cb_data); - if (err < 0) - { - sclose(s); - return err; - } - } - - SOCK_STATE_CALLBACK(channel, s, 1, 0); - server->tcp_buffer_pos = 0; - server->tcp_socket = s; - server->tcp_connection_generation = ++channel->tcp_connection_generation; - return 0; -} - -static int open_udp_socket(ares_channel channel, struct server_state *server) -{ - ares_socket_t s; - ares_socklen_t salen; - union { - struct sockaddr_in sa4; - struct sockaddr_in6 sa6; - } saddr; - struct sockaddr *sa; - - switch (server->addr.family) - { - case AF_INET: - sa = (void *)&saddr.sa4; - salen = sizeof(saddr.sa4); - memset(sa, 0, salen); - saddr.sa4.sin_family = AF_INET; - saddr.sa4.sin_port = (unsigned short)(channel->udp_port & 0xffff); - memcpy(&saddr.sa4.sin_addr, &server->addr.addrV4, - sizeof(server->addr.addrV4)); - break; - case AF_INET6: - sa = (void *)&saddr.sa6; - salen = sizeof(saddr.sa6); - memset(sa, 0, salen); - saddr.sa6.sin6_family = AF_INET6; - saddr.sa6.sin6_port = (unsigned short)(channel->udp_port & 0xffff); - memcpy(&saddr.sa6.sin6_addr, &server->addr.addrV6, - sizeof(server->addr.addrV6)); - break; - default: - return -1; - } - - /* Acquire a socket. */ - s = socket(server->addr.family, SOCK_DGRAM, 0); - if (s == ARES_SOCKET_BAD) - return -1; - - /* Set the socket non-blocking. */ - if (configure_socket(s, server->addr.family, channel) < 0) - { - sclose(s); - return -1; - } - - /* Connect to the server. */ - if (connect(s, sa, salen) == -1) - { - int err = SOCKERRNO; - - if (err != EINPROGRESS && err != EWOULDBLOCK) - { - sclose(s); - return -1; - } - } - - if (channel->sock_create_cb) - { - int err = channel->sock_create_cb(s, SOCK_DGRAM, - channel->sock_create_cb_data); - if (err < 0) - { - sclose(s); - return err; - } - } - - SOCK_STATE_CALLBACK(channel, s, 1, 0); - - server->udp_socket = s; - return 0; -} - -static int same_questions(const unsigned char *qbuf, int qlen, - const unsigned char *abuf, int alen) -{ - struct { - const unsigned char *p; - int qdcount; - char *name; - long namelen; - int type; - int dnsclass; - } q, a; - int i, j; - - if (qlen < HFIXEDSZ || alen < HFIXEDSZ) - return 0; - - /* Extract qdcount from the request and reply buffers and compare them. */ - q.qdcount = DNS_HEADER_QDCOUNT(qbuf); - a.qdcount = DNS_HEADER_QDCOUNT(abuf); - if (q.qdcount != a.qdcount) - return 0; - - /* For each question in qbuf, find it in abuf. */ - q.p = qbuf + HFIXEDSZ; - for (i = 0; i < q.qdcount; i++) - { - /* Decode the question in the query. */ - if (ares_expand_name(q.p, qbuf, qlen, &q.name, &q.namelen) - != ARES_SUCCESS) - return 0; - q.p += q.namelen; - if (q.p + QFIXEDSZ > qbuf + qlen) - { - free(q.name); - return 0; - } - q.type = DNS_QUESTION_TYPE(q.p); - q.dnsclass = DNS_QUESTION_CLASS(q.p); - q.p += QFIXEDSZ; - - /* Search for this question in the answer. */ - a.p = abuf + HFIXEDSZ; - for (j = 0; j < a.qdcount; j++) - { - /* Decode the question in the answer. */ - if (ares_expand_name(a.p, abuf, alen, &a.name, &a.namelen) - != ARES_SUCCESS) - { - free(q.name); - return 0; - } - a.p += a.namelen; - if (a.p + QFIXEDSZ > abuf + alen) - { - free(q.name); - free(a.name); - return 0; - } - a.type = DNS_QUESTION_TYPE(a.p); - a.dnsclass = DNS_QUESTION_CLASS(a.p); - a.p += QFIXEDSZ; - - /* Compare the decoded questions. */ - if (strcasecmp(q.name, a.name) == 0 && q.type == a.type - && q.dnsclass == a.dnsclass) - { - free(a.name); - break; - } - free(a.name); - } - - free(q.name); - if (j == a.qdcount) - return 0; - } - return 1; -} - -static int same_address(struct sockaddr *sa, struct ares_addr *aa) -{ - void *addr1; - void *addr2; - - if (sa->sa_family == aa->family) - { - switch (aa->family) - { - case AF_INET: - addr1 = &aa->addrV4; - addr2 = &((struct sockaddr_in *)sa)->sin_addr; - if (memcmp(addr1, addr2, sizeof(aa->addrV4)) == 0) - return 1; /* match */ - break; - case AF_INET6: - addr1 = &aa->addrV6; - addr2 = &((struct sockaddr_in6 *)sa)->sin6_addr; - if (memcmp(addr1, addr2, sizeof(aa->addrV6)) == 0) - return 1; /* match */ - break; - default: - break; - } - } - return 0; /* different */ -} - -static void end_query (ares_channel channel, struct query *query, int status, - unsigned char *abuf, int alen) -{ - int i; - - /* First we check to see if this query ended while one of our send - * queues still has pointers to it. - */ - for (i = 0; i < channel->nservers; i++) - { - struct server_state *server = &channel->servers[i]; - struct send_request *sendreq; - for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) - if (sendreq->owner_query == query) - { - sendreq->owner_query = NULL; - assert(sendreq->data_storage == NULL); - if (status == ARES_SUCCESS) - { - /* We got a reply for this query, but this queued - * sendreq points into this soon-to-be-gone query's - * tcpbuf. Probably this means we timed out and queued - * the query for retransmission, then received a - * response before actually retransmitting. This is - * perfectly fine, so we want to keep the connection - * running smoothly if we can. But in the worst case - * we may have sent only some prefix of the query, - * with some suffix of the query left to send. Also, - * the buffer may be queued on multiple queues. To - * prevent dangling pointers to the query's tcpbuf and - * handle these cases, we just give such sendreqs - * their own copy of the query packet. - */ - sendreq->data_storage = malloc(sendreq->len); - if (sendreq->data_storage != NULL) - { - memcpy(sendreq->data_storage, sendreq->data, sendreq->len); - sendreq->data = sendreq->data_storage; - } - } - if ((status != ARES_SUCCESS) || (sendreq->data_storage == NULL)) - { - /* We encountered an error (probably a timeout, - * suggesting the DNS server we're talking to is - * probably unreachable, wedged, or severely - * overloaded) or we couldn't copy the request, so - * mark the connection as broken. When we get to - * process_broken_connections() we'll close the - * connection and try to re-send requests to another - * server. - */ - server->is_broken = 1; - /* Just to be paranoid, zero out this sendreq... */ - sendreq->data = NULL; - sendreq->len = 0; - } - } - } - - /* Invoke the callback */ - query->callback(query->arg, status, query->timeouts, abuf, alen); - ares__free_query(query); - - /* Simple cleanup policy: if no queries are remaining, close all - * network sockets unless STAYOPEN is set. - */ - if (!(channel->flags & ARES_FLAG_STAYOPEN) && - ares__is_list_empty(&(channel->all_queries))) - { - for (i = 0; i < channel->nservers; i++) - ares__close_sockets(channel, &channel->servers[i]); - } -} - -void ares__free_query(struct query *query) -{ - /* Remove the query from all the lists in which it is linked */ - ares__remove_from_list(&(query->queries_by_qid)); - ares__remove_from_list(&(query->queries_by_timeout)); - ares__remove_from_list(&(query->queries_to_server)); - ares__remove_from_list(&(query->all_queries)); - /* Zero out some important stuff, to help catch bugs */ - query->callback = NULL; - query->arg = NULL; - /* Deallocate the memory associated with the query */ - free(query->tcpbuf); - free(query->server_info); - free(query); -} diff --git a/deps/uv/c-ares/ares_query.c b/deps/uv/c-ares/ares_query.c deleted file mode 100644 index 63652e229d..0000000000 --- a/deps/uv/c-ares/ares_query.c +++ /dev/null @@ -1,183 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include "ares.h" -#include "ares_dns.h" -#include "ares_private.h" - -struct qquery { - ares_callback callback; - void *arg; -}; - -static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen); - -void ares__rc4(rc4_key* key, unsigned char *buffer_ptr, int buffer_len) -{ - unsigned char x; - unsigned char y; - unsigned char* state; - unsigned char xorIndex; - short counter; - - x = key->x; - y = key->y; - - state = &key->state[0]; - for(counter = 0; counter < buffer_len; counter ++) - { - x = (unsigned char)((x + 1) % 256); - y = (unsigned char)((state[x] + y) % 256); - ARES_SWAP_BYTE(&state[x], &state[y]); - - xorIndex = (unsigned char)((state[x] + state[y]) % 256); - - buffer_ptr[counter] = (unsigned char)(buffer_ptr[counter]^state[xorIndex]); - } - key->x = x; - key->y = y; -} - -static struct query* find_query_by_id(ares_channel channel, unsigned short id) -{ - unsigned short qid; - struct list_node* list_head; - struct list_node* list_node; - DNS_HEADER_SET_QID(((unsigned char*)&qid), id); - - /* Find the query corresponding to this packet. */ - list_head = &(channel->queries_by_qid[qid % ARES_QID_TABLE_SIZE]); - for (list_node = list_head->next; list_node != list_head; - list_node = list_node->next) - { - struct query *q = list_node->data; - if (q->qid == qid) - return q; - } - return NULL; -} - - -/* a unique query id is generated using an rc4 key. Since the id may already - be used by a running query (as infrequent as it may be), a lookup is - performed per id generation. In practice this search should happen only - once per newly generated id -*/ -static unsigned short generate_unique_id(ares_channel channel) -{ - unsigned short id; - - do { - id = ares__generate_new_id(&channel->id_key); - } while (find_query_by_id(channel, id)); - - return (unsigned short)id; -} - -void ares_query(ares_channel channel, const char *name, int dnsclass, - int type, ares_callback callback, void *arg) -{ - struct qquery *qquery; - unsigned char *qbuf; - int qlen, rd, status; - - /* Compose the query. */ - rd = !(channel->flags & ARES_FLAG_NORECURSE); - status = ares_mkquery(name, dnsclass, type, channel->next_id, rd, &qbuf, - &qlen); - if (status != ARES_SUCCESS) - { - if (qbuf != NULL) free(qbuf); - callback(arg, status, 0, NULL, 0); - return; - } - - channel->next_id = generate_unique_id(channel); - - /* Allocate and fill in the query structure. */ - qquery = malloc(sizeof(struct qquery)); - if (!qquery) - { - ares_free_string(qbuf); - callback(arg, ARES_ENOMEM, 0, NULL, 0); - return; - } - qquery->callback = callback; - qquery->arg = arg; - - /* Send it off. qcallback will be called when we get an answer. */ - ares_send(channel, qbuf, qlen, qcallback, qquery); - ares_free_string(qbuf); -} - -static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen) -{ - struct qquery *qquery = (struct qquery *) arg; - unsigned int ancount; - int rcode; - - if (status != ARES_SUCCESS) - qquery->callback(qquery->arg, status, timeouts, abuf, alen); - else - { - /* Pull the response code and answer count from the packet. */ - rcode = DNS_HEADER_RCODE(abuf); - ancount = DNS_HEADER_ANCOUNT(abuf); - - /* Convert errors. */ - switch (rcode) - { - case NOERROR: - status = (ancount > 0) ? ARES_SUCCESS : ARES_ENODATA; - break; - case FORMERR: - status = ARES_EFORMERR; - break; - case SERVFAIL: - status = ARES_ESERVFAIL; - break; - case NXDOMAIN: - status = ARES_ENOTFOUND; - break; - case NOTIMP: - status = ARES_ENOTIMP; - break; - case REFUSED: - status = ARES_EREFUSED; - break; - } - qquery->callback(qquery->arg, status, timeouts, abuf, alen); - } - free(qquery); -} diff --git a/deps/uv/c-ares/ares_rules.h b/deps/uv/c-ares/ares_rules.h deleted file mode 100644 index f94c5b5916..0000000000 --- a/deps/uv/c-ares/ares_rules.h +++ /dev/null @@ -1,144 +0,0 @@ -#ifndef __CARES_RULES_H -#define __CARES_RULES_H - - -/* Copyright (C) 2009 by Daniel Stenberg et al - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. M.I.T. makes no representations about the - * suitability of this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -/* ================================================================ */ -/* COMPILE TIME SANITY CHECKS */ -/* ================================================================ */ - -/* - * NOTE 1: - * ------- - * - * All checks done in this file are intentionally placed in a public - * header file which is pulled by ares.h when an application is - * being built using an already built c-ares library. Additionally - * this file is also included and used when building the library. - * - * If compilation fails on this file it is certainly sure that the - * problem is elsewhere. It could be a problem in the ares_build.h - * header file, or simply that you are using different compilation - * settings than those used to build the library. - * - * Nothing in this file is intended to be modified or adjusted by the - * c-ares library user nor by the c-ares library builder. - * - * Do not deactivate any check, these are done to make sure that the - * library is properly built and used. - * - * You can find further help on the c-ares development mailing list: - * http://cool.haxx.se/mailman/listinfo/c-ares/ - * - * NOTE 2 - * ------ - * - * Some of the following compile time checks are based on the fact - * that the dimension of a constant array can not be a negative one. - * In this way if the compile time verification fails, the compilation - * will fail issuing an error. The error description wording is compiler - * dependent but it will be quite similar to one of the following: - * - * "negative subscript or subscript is too large" - * "array must have at least one element" - * "-1 is an illegal array size" - * "size of array is negative" - * - * If you are building an application which tries to use an already - * built c-ares library and you are getting this kind of errors on - * this file, it is a clear indication that there is a mismatch between - * how the library was built and how you are trying to use it for your - * application. Your already compiled or binary library provider is the - * only one who can give you the details you need to properly use it. - */ - -/* - * Verify that some macros are actually defined. - */ - -#ifndef CARES_SIZEOF_LONG -# error "CARES_SIZEOF_LONG definition is missing!" - Error Compilation_aborted_CARES_SIZEOF_LONG_is_missing -#endif - -#ifndef CARES_TYPEOF_ARES_SOCKLEN_T -# error "CARES_TYPEOF_ARES_SOCKLEN_T definition is missing!" - Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_is_missing -#endif - -#ifndef CARES_SIZEOF_ARES_SOCKLEN_T -# error "CARES_SIZEOF_ARES_SOCKLEN_T definition is missing!" - Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_is_missing -#endif - -/* - * Macros private to this header file. - */ - -#define CareschkszEQ(t, s) sizeof(t) == s ? 1 : -1 - -#define CareschkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1 - -/* - * Verify that the size previously defined and expected for long - * is the same as the one reported by sizeof() at compile time. - */ - -typedef char - __cares_rule_01__ - [CareschkszEQ(long, CARES_SIZEOF_LONG)]; - -/* - * Verify that the size previously defined and expected for - * ares_socklen_t is actually the the same as the one reported - * by sizeof() at compile time. - */ - -typedef char - __cares_rule_02__ - [CareschkszEQ(ares_socklen_t, CARES_SIZEOF_ARES_SOCKLEN_T)]; - -/* - * Verify at compile time that the size of ares_socklen_t as reported - * by sizeof() is greater or equal than the one reported for int for - * the current compilation. - */ - -typedef char - __cares_rule_03__ - [CareschkszGE(ares_socklen_t, int)]; - -/* ================================================================ */ -/* EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS */ -/* ================================================================ */ - -/* - * Get rid of macros private to this header file. - */ - -#undef CareschkszEQ -#undef CareschkszGE - -/* - * Get rid of macros not intended to exist beyond this point. - */ - -#undef CARES_PULL_WS2TCPIP_H -#undef CARES_PULL_SYS_TYPES_H -#undef CARES_PULL_SYS_SOCKET_H - -#undef CARES_TYPEOF_ARES_SOCKLEN_T - -#endif /* __CARES_RULES_H */ diff --git a/deps/uv/c-ares/ares_search.c b/deps/uv/c-ares/ares_search.c deleted file mode 100644 index 608cb153d3..0000000000 --- a/deps/uv/c-ares/ares_search.c +++ /dev/null @@ -1,322 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#include -#include -#include -#include -#include - -#ifdef HAVE_STRINGS_H -# include -#endif - -#include "ares.h" -#include "ares_private.h" - -struct search_query { - /* Arguments passed to ares_search */ - ares_channel channel; - char *name; /* copied into an allocated buffer */ - int dnsclass; - int type; - ares_callback callback; - void *arg; - - int status_as_is; /* error status from trying as-is */ - int next_domain; /* next search domain to try */ - int trying_as_is; /* current query is for name as-is */ - int timeouts; /* number of timeouts we saw for this request */ - int ever_got_nodata; /* did we ever get ARES_ENODATA along the way? */ -}; - -static void search_callback(void *arg, int status, int timeouts, - unsigned char *abuf, int alen); -static void end_squery(struct search_query *squery, int status, - unsigned char *abuf, int alen); -static int cat_domain(const char *name, const char *domain, char **s); -static int single_domain(ares_channel channel, const char *name, char **s); - -void ares_search(ares_channel channel, const char *name, int dnsclass, - int type, ares_callback callback, void *arg) -{ - struct search_query *squery; - char *s; - const char *p; - int status, ndots; - - /* If name only yields one domain to search, then we don't have - * to keep extra state, so just do an ares_query(). - */ - status = single_domain(channel, name, &s); - if (status != ARES_SUCCESS) - { - callback(arg, status, 0, NULL, 0); - return; - } - if (s) - { - ares_query(channel, s, dnsclass, type, callback, arg); - free(s); - return; - } - - /* Allocate a search_query structure to hold the state necessary for - * doing multiple lookups. - */ - squery = malloc(sizeof(struct search_query)); - if (!squery) - { - callback(arg, ARES_ENOMEM, 0, NULL, 0); - return; - } - squery->channel = channel; - squery->name = strdup(name); - if (!squery->name) - { - free(squery); - callback(arg, ARES_ENOMEM, 0, NULL, 0); - return; - } - squery->dnsclass = dnsclass; - squery->type = type; - squery->status_as_is = -1; - squery->callback = callback; - squery->arg = arg; - squery->timeouts = 0; - squery->ever_got_nodata = 0; - - /* Count the number of dots in name. */ - ndots = 0; - for (p = name; *p; p++) - { - if (*p == '.') - ndots++; - } - - /* If ndots is at least the channel ndots threshold (usually 1), - * then we try the name as-is first. Otherwise, we try the name - * as-is last. - */ - if (ndots >= channel->ndots) - { - /* Try the name as-is first. */ - squery->next_domain = 0; - squery->trying_as_is = 1; - ares_query(channel, name, dnsclass, type, search_callback, squery); - } - else - { - /* Try the name as-is last; start with the first search domain. */ - squery->next_domain = 1; - squery->trying_as_is = 0; - status = cat_domain(name, channel->domains[0], &s); - if (status == ARES_SUCCESS) - { - ares_query(channel, s, dnsclass, type, search_callback, squery); - free(s); - } - else - { - /* failed, free the malloc()ed memory */ - free(squery->name); - free(squery); - callback(arg, status, 0, NULL, 0); - } - } -} - -static void search_callback(void *arg, int status, int timeouts, - unsigned char *abuf, int alen) -{ - struct search_query *squery = (struct search_query *) arg; - ares_channel channel = squery->channel; - char *s; - - squery->timeouts += timeouts; - - /* Stop searching unless we got a non-fatal error. */ - if (status != ARES_ENODATA && status != ARES_ESERVFAIL - && status != ARES_ENOTFOUND) - end_squery(squery, status, abuf, alen); - else - { - /* Save the status if we were trying as-is. */ - if (squery->trying_as_is) - squery->status_as_is = status; - - /* - * If we ever get ARES_ENODATA along the way, record that; if the search - * should run to the very end and we got at least one ARES_ENODATA, - * then callers like ares_gethostbyname() may want to try a T_A search - * even if the last domain we queried for T_AAAA resource records - * returned ARES_ENOTFOUND. - */ - if (status == ARES_ENODATA) - squery->ever_got_nodata = 1; - - if (squery->next_domain < channel->ndomains) - { - /* Try the next domain. */ - status = cat_domain(squery->name, - channel->domains[squery->next_domain], &s); - if (status != ARES_SUCCESS) - end_squery(squery, status, NULL, 0); - else - { - squery->trying_as_is = 0; - squery->next_domain++; - ares_query(channel, s, squery->dnsclass, squery->type, - search_callback, squery); - free(s); - } - } - else if (squery->status_as_is == -1) - { - /* Try the name as-is at the end. */ - squery->trying_as_is = 1; - ares_query(channel, squery->name, squery->dnsclass, squery->type, - search_callback, squery); - } - else { - if (squery->status_as_is == ARES_ENOTFOUND && squery->ever_got_nodata) { - end_squery(squery, ARES_ENODATA, NULL, 0); - } - else - end_squery(squery, squery->status_as_is, NULL, 0); - } - } -} - -static void end_squery(struct search_query *squery, int status, - unsigned char *abuf, int alen) -{ - squery->callback(squery->arg, status, squery->timeouts, abuf, alen); - free(squery->name); - free(squery); -} - -/* Concatenate two domains. */ -static int cat_domain(const char *name, const char *domain, char **s) -{ - size_t nlen = strlen(name); - size_t dlen = strlen(domain); - - *s = malloc(nlen + 1 + dlen + 1); - if (!*s) - return ARES_ENOMEM; - memcpy(*s, name, nlen); - (*s)[nlen] = '.'; - memcpy(*s + nlen + 1, domain, dlen); - (*s)[nlen + 1 + dlen] = 0; - return ARES_SUCCESS; -} - -/* Determine if this name only yields one query. If it does, set *s to - * the string we should query, in an allocated buffer. If not, set *s - * to NULL. - */ -static int single_domain(ares_channel channel, const char *name, char **s) -{ - size_t len = strlen(name); - const char *hostaliases; - FILE *fp; - char *line = NULL; - int status; - size_t linesize; - const char *p, *q; - int error; - - /* If the name contains a trailing dot, then the single query is the name - * sans the trailing dot. - */ - if (name[len - 1] == '.') - { - *s = strdup(name); - return (*s) ? ARES_SUCCESS : ARES_ENOMEM; - } - - if (!(channel->flags & ARES_FLAG_NOALIASES) && !strchr(name, '.')) - { - /* The name might be a host alias. */ - hostaliases = getenv("HOSTALIASES"); - if (hostaliases) - { - fp = fopen(hostaliases, "r"); - if (fp) - { - while ((status = ares__read_line(fp, &line, &linesize)) - == ARES_SUCCESS) - { - if (strncasecmp(line, name, len) != 0 || - !ISSPACE(line[len])) - continue; - p = line + len; - while (ISSPACE(*p)) - p++; - if (*p) - { - q = p + 1; - while (*q && !ISSPACE(*q)) - q++; - *s = malloc(q - p + 1); - if (*s) - { - memcpy(*s, p, q - p); - (*s)[q - p] = 0; - } - free(line); - fclose(fp); - return (*s) ? ARES_SUCCESS : ARES_ENOMEM; - } - } - free(line); - fclose(fp); - if (status != ARES_SUCCESS && status != ARES_EOF) - return status; - } - else - { - error = errno; - switch(error) - { - case ENOENT: - case ESRCH: - break; - default: - DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", - error, strerror(error))); - DEBUGF(fprintf(stderr, "Error opening file: %s\n", - hostaliases)); - *s = NULL; - return ARES_EFILE; - } - } - } - } - - if (channel->flags & ARES_FLAG_NOSEARCH || channel->ndomains == 0) - { - /* No domain search to do; just try the name as-is. */ - *s = strdup(name); - return (*s) ? ARES_SUCCESS : ARES_ENOMEM; - } - - *s = NULL; - return ARES_SUCCESS; -} diff --git a/deps/uv/c-ares/ares_send.c b/deps/uv/c-ares/ares_send.c deleted file mode 100644 index 9f24d339a8..0000000000 --- a/deps/uv/c-ares/ares_send.c +++ /dev/null @@ -1,134 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include -#include "ares.h" -#include "ares_dns.h" -#include "ares_private.h" - -void ares_send(ares_channel channel, const unsigned char *qbuf, int qlen, - ares_callback callback, void *arg) -{ - struct query *query; - int i; - struct timeval now; - - /* Verify that the query is at least long enough to hold the header. */ - if (qlen < HFIXEDSZ || qlen >= (1 << 16)) - { - callback(arg, ARES_EBADQUERY, 0, NULL, 0); - return; - } - - /* Allocate space for query and allocated fields. */ - query = malloc(sizeof(struct query)); - if (!query) - { - callback(arg, ARES_ENOMEM, 0, NULL, 0); - return; - } - query->tcpbuf = malloc(qlen + 2); - if (!query->tcpbuf) - { - free(query); - callback(arg, ARES_ENOMEM, 0, NULL, 0); - return; - } - query->server_info = malloc(channel->nservers * - sizeof(query->server_info[0])); - if (!query->server_info) - { - free(query->tcpbuf); - free(query); - callback(arg, ARES_ENOMEM, 0, NULL, 0); - return; - } - - /* Compute the query ID. Start with no timeout. */ - query->qid = (unsigned short)DNS_HEADER_QID(qbuf); - query->timeout.tv_sec = 0; - query->timeout.tv_usec = 0; - - /* Form the TCP query buffer by prepending qlen (as two - * network-order bytes) to qbuf. - */ - query->tcpbuf[0] = (unsigned char)((qlen >> 8) & 0xff); - query->tcpbuf[1] = (unsigned char)(qlen & 0xff); - memcpy(query->tcpbuf + 2, qbuf, qlen); - query->tcplen = qlen + 2; - - /* Fill in query arguments. */ - query->qbuf = query->tcpbuf + 2; - query->qlen = qlen; - query->callback = callback; - query->arg = arg; - - /* Initialize query status. */ - query->try = 0; - - /* Choose the server to send the query to. If rotation is enabled, keep track - * of the next server we want to use. */ - query->server = channel->last_server; - if (channel->rotate == 1) - channel->last_server = (channel->last_server + 1) % channel->nservers; - - for (i = 0; i < channel->nservers; i++) - { - query->server_info[i].skip_server = 0; - query->server_info[i].tcp_connection_generation = 0; - } - query->using_tcp = (channel->flags & ARES_FLAG_USEVC) || qlen > PACKETSZ; - query->error_status = ARES_ECONNREFUSED; - query->timeouts = 0; - - /* Initialize our list nodes. */ - ares__init_list_node(&(query->queries_by_qid), query); - ares__init_list_node(&(query->queries_by_timeout), query); - ares__init_list_node(&(query->queries_to_server), query); - ares__init_list_node(&(query->all_queries), query); - - /* Chain the query into the list of all queries. */ - ares__insert_in_list(&(query->all_queries), &(channel->all_queries)); - /* Keep track of queries bucketed by qid, so we can process DNS - * responses quickly. - */ - ares__insert_in_list( - &(query->queries_by_qid), - &(channel->queries_by_qid[query->qid % ARES_QID_TABLE_SIZE])); - - /* Perform the first query action. */ - now = ares__tvnow(); - ares__send_query(channel, query, &now); -} diff --git a/deps/uv/c-ares/ares_setup.h b/deps/uv/c-ares/ares_setup.h deleted file mode 100644 index b405aae265..0000000000 --- a/deps/uv/c-ares/ares_setup.h +++ /dev/null @@ -1,197 +0,0 @@ -#ifndef HEADER_CARES_SETUP_H -#define HEADER_CARES_SETUP_H - -/* $Id$ */ - -/* Copyright (C) 2004 - 2009 by Daniel Stenberg et al - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. M.I.T. makes no representations about the - * suitability of this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -/* - * Define WIN32 when build target is Win32 API - */ - -#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) -#define WIN32 -#endif - -/* - * Include configuration script results or hand-crafted - * configuration file for platforms which lack config tool. - */ - -#ifdef HAVE_CONFIG_H -#include "ares_config.h" -#else - -#ifdef WIN32 -#include "config-win32.h" -#endif - -#endif /* HAVE_CONFIG_H */ - -/* ================================================================ */ -/* Definition of preprocessor macros/symbols which modify compiler */ -/* behaviour or generated code characteristics must be done here, */ -/* as appropriate, before any system header file is included. It is */ -/* also possible to have them defined in the config file included */ -/* before this point. As a result of all this we frown inclusion of */ -/* system header files in our config files, avoid this at any cost. */ -/* ================================================================ */ - -/* - * AIX 4.3 and newer needs _THREAD_SAFE defined to build - * proper reentrant code. Others may also need it. - */ - -#ifdef NEED_THREAD_SAFE -# ifndef _THREAD_SAFE -# define _THREAD_SAFE -# endif -#endif - -/* - * Tru64 needs _REENTRANT set for a few function prototypes and - * things to appear in the system header files. Unixware needs it - * to build proper reentrant code. Others may also need it. - */ - -#ifdef NEED_REENTRANT -# ifndef _REENTRANT -# define _REENTRANT -# endif -#endif - -/* ================================================================ */ -/* If you need to include a system header file for your platform, */ -/* please, do it beyond the point further indicated in this file. */ -/* ================================================================ */ - -#if 0 /* libuv disabled */ -/* - * c-ares external interface definitions are also used internally, - * and might also include required system header files to define them. - */ - -#include - -/* - * Compile time sanity checks must also be done when building the library. - */ - -#include -#endif - -/* ================================================================= */ -/* No system header file shall be included in this file before this */ -/* point. The only allowed ones are those included from ares_build.h */ -/* ================================================================= */ - -/* - * Include header files for windows builds before redefining anything. - * Use this preproessor block only to include or exclude windows.h, - * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs - * to any other further and independent block. Under Cygwin things work - * just as under linux (e.g. ) and the winsock headers should - * never be included when __CYGWIN__ is defined. configure script takes - * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H, - * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined. - */ - -#ifdef HAVE_WINDOWS_H -# ifdef HAVE_WINSOCK2_H -# include -# ifdef HAVE_WS2TCPIP_H -# include -# endif -# else -# ifdef HAVE_WINSOCK_H -# include -# endif -# endif -# include -#endif - -/* - * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else - * define USE_WINSOCK to 1 if we have and use WINSOCK API, else - * undefine USE_WINSOCK. - */ - -#undef USE_WINSOCK - -#ifdef HAVE_WINSOCK2_H -# define USE_WINSOCK 2 -#else -# ifdef HAVE_WINSOCK_H -# define USE_WINSOCK 1 -# endif -#endif - -/* - * Work-arounds for systems without configure support - */ - -#ifndef HAVE_CONFIG_H - -#if !defined(HAVE_SYS_TIME_H) && !defined(_MSC_VER) && !defined(__WATCOMC__) -#define HAVE_SYS_TIME_H -#endif - -#if !defined(HAVE_UNISTD_H) && !defined(_MSC_VER) -#define HAVE_UNISTD_H 1 -#endif - -#if !defined(HAVE_SYS_UIO_H) && !defined(WIN32) && !defined(MSDOS) -#define HAVE_SYS_UIO_H -#endif - -#endif /* HAVE_CONFIG_H */ - -#ifdef __POCC__ -# include -# include -# define ESRCH 3 -#endif - -/* - * Recent autoconf versions define these symbols in ares_config.h. We don't - * want them (since they collide with the libcurl ones when we build - * --enable-debug) so we undef them again here. - */ - -#undef PACKAGE_STRING -#undef PACKAGE_TARNAME -#undef PACKAGE_VERSION -#undef PACKAGE_BUGREPORT -#undef PACKAGE_NAME -#undef VERSION -#undef PACKAGE - -/* IPv6 compatibility */ -#if !defined(HAVE_AF_INET6) -#if defined(HAVE_PF_INET6) -#define AF_INET6 PF_INET6 -#else -#define AF_INET6 AF_MAX+1 -#endif -#endif - -/* - * Include macros and defines that should only be processed once. - */ - -#ifndef __SETUP_ONCE_H -#include "setup_once.h" -#endif - -#endif /* HEADER_CARES_SETUP_H */ diff --git a/deps/uv/c-ares/ares_strcasecmp.c b/deps/uv/c-ares/ares_strcasecmp.c deleted file mode 100644 index f9c85e2096..0000000000 --- a/deps/uv/c-ares/ares_strcasecmp.c +++ /dev/null @@ -1,66 +0,0 @@ - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include "ares_strcasecmp.h" - -#ifndef HAVE_STRCASECMP -int ares_strcasecmp(const char *a, const char *b) -{ -#if defined(HAVE_STRCMPI) - return strcmpi(a, b); -#elif defined(HAVE_STRICMP) - return stricmp(a, b); -#else - size_t i; - - for (i = 0; i < (size_t)-1; i++) { - int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i]; - int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i]; - if (c1 != c2) - return c1-c2; - if (!c1) - break; - } - return 0; -#endif -} -#endif - -#ifndef HAVE_STRNCASECMP -int ares_strncasecmp(const char *a, const char *b, size_t n) -{ -#if defined(HAVE_STRNCMPI) - return strncmpi(a, b, n); -#elif defined(HAVE_STRNICMP) - return strnicmp(a, b, n); -#else - size_t i; - - for (i = 0; i < n; i++) { - int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i]; - int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i]; - if (c1 != c2) - return c1-c2; - if (!c1) - break; - } - return 0; -#endif -} -#endif - diff --git a/deps/uv/c-ares/ares_strcasecmp.h b/deps/uv/c-ares/ares_strcasecmp.h deleted file mode 100644 index 57d86f9634..0000000000 --- a/deps/uv/c-ares/ares_strcasecmp.h +++ /dev/null @@ -1,30 +0,0 @@ -#ifndef HEADER_CARES_STRCASECMP_H -#define HEADER_CARES_STRCASECMP_H - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifndef HAVE_STRCASECMP -extern int ares_strcasecmp(const char *a, const char *b); -#endif - -#ifndef HAVE_STRNCASECMP -extern int ares_strncasecmp(const char *a, const char *b, size_t n); -#endif - -#endif /* HEADER_CARES_STRCASECMP_H */ diff --git a/deps/uv/c-ares/ares_strdup.c b/deps/uv/c-ares/ares_strdup.c deleted file mode 100644 index 18043274e9..0000000000 --- a/deps/uv/c-ares/ares_strdup.c +++ /dev/null @@ -1,42 +0,0 @@ - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include "ares_strdup.h" - -#ifndef HAVE_STRDUP -char *ares_strdup(const char *s1) -{ - size_t sz; - char * s2; - - if(s1) { - sz = strlen(s1); - if(sz < (size_t)-1) { - sz++; - if(sz < ((size_t)-1) / sizeof(char)) { - s2 = malloc(sz * sizeof(char)); - if(s2) { - memcpy(s2, s1, sz * sizeof(char)); - return s2; - } - } - } - } - return (char *)NULL; -} -#endif diff --git a/deps/uv/c-ares/ares_strdup.h b/deps/uv/c-ares/ares_strdup.h deleted file mode 100644 index c413a941c5..0000000000 --- a/deps/uv/c-ares/ares_strdup.h +++ /dev/null @@ -1,26 +0,0 @@ -#ifndef HEADER_CARES_STRDUP_H -#define HEADER_CARES_STRDUP_H - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifndef HAVE_STRDUP -extern char *ares_strdup(const char *s1); -#endif - -#endif /* HEADER_CARES_STRDUP_H */ diff --git a/deps/uv/c-ares/ares_strerror.c b/deps/uv/c-ares/ares_strerror.c deleted file mode 100644 index c3ecbd7b43..0000000000 --- a/deps/uv/c-ares/ares_strerror.c +++ /dev/null @@ -1,56 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include -#include "ares.h" - -const char *ares_strerror(int code) -{ - /* Return a string literal from a table. */ - const char *errtext[] = { - "Successful completion", - "DNS server returned answer with no data", - "DNS server claims query was misformatted", - "DNS server returned general failure", - "Domain name not found", - "DNS server does not implement requested operation", - "DNS server refused query", - "Misformatted DNS query", - "Misformatted domain name", - "Unsupported address family", - "Misformatted DNS reply", - "Could not contact DNS servers", - "Timeout while contacting DNS servers", - "End of file", - "Error reading file", - "Out of memory", - "Channel is being destroyed", - "Misformatted string", - "Illegal flags specified", - "Given hostname is not numeric", - "Illegal hints flags specified", - "c-ares library initialization not yet performed", - "Error loading iphlpapi.dll", - "Could not find GetNetworkParams function", - "DNS query cancelled" - }; - - if(code >= 0 && code < (int)(sizeof(errtext) / sizeof(*errtext))) - return errtext[code]; - else - return "unknown"; -} diff --git a/deps/uv/c-ares/ares_timeout.c b/deps/uv/c-ares/ares_timeout.c deleted file mode 100644 index 2da4f5f4a1..0000000000 --- a/deps/uv/c-ares/ares_timeout.c +++ /dev/null @@ -1,80 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_TIME_H -#include -#endif - -#include - -#include "ares.h" -#include "ares_private.h" - -/* WARNING: Beware that this is linear in the number of outstanding - * requests! You are probably far better off just calling ares_process() - * once per second, rather than calling ares_timeout() to figure out - * when to next call ares_process(). - */ -struct timeval *ares_timeout(ares_channel channel, struct timeval *maxtv, - struct timeval *tvbuf) -{ - struct query *query; - struct list_node* list_head; - struct list_node* list_node; - struct timeval now; - struct timeval nextstop; - long offset, min_offset; - - /* No queries, no timeout (and no fetch of the current time). */ - if (ares__is_list_empty(&(channel->all_queries))) - return maxtv; - - /* Find the minimum timeout for the current set of queries. */ - now = ares__tvnow(); - min_offset = -1; - - list_head = &(channel->all_queries); - for (list_node = list_head->next; list_node != list_head; - list_node = list_node->next) - { - query = list_node->data; - if (query->timeout.tv_sec == 0) - continue; - offset = ares__timeoffset(&now, &query->timeout); - if (offset < 0) - offset = 0; - if (min_offset == -1 || offset < min_offset) - min_offset = offset; - } - - if(min_offset != -1) { - nextstop.tv_sec = min_offset/1000; - nextstop.tv_usec = (min_offset%1000)*1000; - } - - /* If we found a minimum timeout and it's sooner than the one specified in - * maxtv (if any), return it. Otherwise go with maxtv. - */ - if (min_offset != -1 && (!maxtv || ares__timedout(maxtv, &nextstop))) - { - *tvbuf = nextstop; - return tvbuf; - } - else - return maxtv; -} diff --git a/deps/uv/c-ares/ares_version.c b/deps/uv/c-ares/ares_version.c deleted file mode 100644 index 4f8c42f2c9..0000000000 --- a/deps/uv/c-ares/ares_version.c +++ /dev/null @@ -1,11 +0,0 @@ - -#include "ares_setup.h" -#include "ares.h" - -const char *ares_version(int *version) -{ - if(version) - *version = ARES_VERSION; - - return ARES_VERSION_STR; -} diff --git a/deps/uv/c-ares/ares_version.h b/deps/uv/c-ares/ares_version.h deleted file mode 100644 index 8baa897cda..0000000000 --- a/deps/uv/c-ares/ares_version.h +++ /dev/null @@ -1,24 +0,0 @@ - -#ifndef ARES__VERSION_H -#define ARES__VERSION_H - -/* This is the global package copyright */ -#define ARES_COPYRIGHT "2004 - 2010 Daniel Stenberg, ." - -#define ARES_VERSION_MAJOR 1 -#define ARES_VERSION_MINOR 7 -#define ARES_VERSION_PATCH 4 -#define ARES_VERSION ((ARES_VERSION_MAJOR<<16)|\ - (ARES_VERSION_MINOR<<8)|\ - (ARES_VERSION_PATCH)) -#define ARES_VERSION_STR "1.7.4" - -#if (ARES_VERSION >= 0x010700) -# define CARES_HAVE_ARES_LIBRARY_INIT 1 -# define CARES_HAVE_ARES_LIBRARY_CLEANUP 1 -#else -# undef CARES_HAVE_ARES_LIBRARY_INIT -# undef CARES_HAVE_ARES_LIBRARY_CLEANUP -#endif - -#endif diff --git a/deps/uv/c-ares/ares_writev.c b/deps/uv/c-ares/ares_writev.c deleted file mode 100644 index 9e8e2d6574..0000000000 --- a/deps/uv/c-ares/ares_writev.c +++ /dev/null @@ -1,79 +0,0 @@ - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" - -#ifdef HAVE_LIMITS_H -# include -#endif - -#include "ares.h" -#include "ares_private.h" - -#ifndef HAVE_WRITEV -ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt) -{ - char *buffer, *bp; - int i; - size_t bytes = 0; - ssize_t result; - - /* Validate iovcnt */ - if (iovcnt <= 0) - { - SET_ERRNO(EINVAL); - return (-1); - } - - /* Validate and find the sum of the iov_len values in the iov array */ - for (i = 0; i < iovcnt; i++) - { - if (iov[i].iov_len > INT_MAX - bytes) - { - SET_ERRNO(EINVAL); - return (-1); - } - bytes += iov[i].iov_len; - } - - if (bytes == 0) - return (0); - - /* Allocate a temporary buffer to hold the data */ - buffer = malloc(bytes); - if (!buffer) - { - SET_ERRNO(ENOMEM); - return (-1); - } - - /* Copy the data into buffer */ - for (bp = buffer, i = 0; i < iovcnt; ++i) - { - memcpy (bp, iov[i].iov_base, iov[i].iov_len); - bp += iov[i].iov_len; - } - - /* Send buffer contents */ - result = swrite(s, buffer, bytes); - - free(buffer); - - return (result); -} -#endif - diff --git a/deps/uv/c-ares/ares_writev.h b/deps/uv/c-ares/ares_writev.h deleted file mode 100644 index 1a23a0f3d1..0000000000 --- a/deps/uv/c-ares/ares_writev.h +++ /dev/null @@ -1,36 +0,0 @@ -#ifndef HEADER_CARES_WRITEV_H -#define HEADER_CARES_WRITEV_H - - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#include "ares_setup.h" -#include "ares.h" - -#ifndef HAVE_WRITEV - -/* Structure for scatter/gather I/O. */ -struct iovec -{ - void *iov_base; /* Pointer to data. */ - size_t iov_len; /* Length of data. */ -}; - -extern ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt); - -#endif - -#endif /* HEADER_CARES_WRITEV_H */ diff --git a/deps/uv/c-ares/bitncmp.c b/deps/uv/c-ares/bitncmp.c deleted file mode 100644 index 5c89506b33..0000000000 --- a/deps/uv/c-ares/bitncmp.c +++ /dev/null @@ -1,59 +0,0 @@ - -/* - * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") - * Copyright (c) 1996,1999 by Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT - * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#ifndef HAVE_BITNCMP - -#include "ares_setup.h" -#include "bitncmp.h" - -/* - * int - * bitncmp(l, r, n) - * compare bit masks l and r, for n bits. - * return: - * -1, 1, or 0 in the libc tradition. - * note: - * network byte order assumed. this means 192.5.5.240/28 has - * 0x11110000 in its fourth octet. - * author: - * Paul Vixie (ISC), June 1996 - */ -int -ares_bitncmp(const void *l, const void *r, int n) { - unsigned int lb, rb; - int x, b; - - b = n / 8; - x = memcmp(l, r, b); - if (x || (n % 8) == 0) - return (x); - - lb = ((const unsigned char *)l)[b]; - rb = ((const unsigned char *)r)[b]; - for (b = n % 8; b > 0; b--) { - if ((lb & 0x80) != (rb & 0x80)) { - if (lb & 0x80) - return (1); - return (-1); - } - lb <<= 1; - rb <<= 1; - } - return (0); -} -#endif diff --git a/deps/uv/c-ares/bitncmp.h b/deps/uv/c-ares/bitncmp.h deleted file mode 100644 index b0a5c812b4..0000000000 --- a/deps/uv/c-ares/bitncmp.h +++ /dev/null @@ -1,26 +0,0 @@ -#ifndef __ARES_BITNCMP_H -#define __ARES_BITNCMP_H - - -/* Copyright (C) 2005 by Dominick Meglio - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#ifndef HAVE_BITNCMP -int ares_bitncmp(const void *l, const void *r, int n); -#else -#define ares_bitncmp(x,y,z) bitncmp(x,y,z) -#endif - -#endif /* __ARES_BITNCMP_H */ diff --git a/deps/uv/c-ares/config-win32.h b/deps/uv/c-ares/config-win32.h deleted file mode 100644 index 13c5de56e6..0000000000 --- a/deps/uv/c-ares/config-win32.h +++ /dev/null @@ -1,357 +0,0 @@ -#ifndef __ARES_CONFIG_WIN32_H -#define __ARES_CONFIG_WIN32_H - - -/* Copyright (C) 2004 - 2008 by Daniel Stenberg et al - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. M.I.T. makes no representations about the - * suitability of this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -/* ================================================================ */ -/* ares/config-win32.h - Hand crafted config file for Windows */ -/* ================================================================ */ - -/* ---------------------------------------------------------------- */ -/* HEADER FILES */ -/* ---------------------------------------------------------------- */ - -/* Define if you have the header file. */ -#if defined(__MINGW32__) || defined(__POCC__) -#define HAVE_GETOPT_H 1 -#endif - -/* Define if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* Define if you have the header file. */ -#ifndef __SALFORDC__ -#define HAVE_PROCESS_H 1 -#endif - -/* Define if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define if you have the header file */ -/* #define HAVE_SYS_TIME_H 1 */ - -/* Define if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define if you have the header file. */ -#if defined(__MINGW32__) || defined(__WATCOMC__) || defined(__LCC__) || \ - defined(__POCC__) -#define HAVE_UNISTD_H 1 -#endif - -/* Define if you have the header file. */ -#define HAVE_WINSOCK_H 1 - -/* Define if you have the header file. */ -#ifndef __SALFORDC__ -#define HAVE_WINSOCK2_H 1 -#endif - -/* Define if you have the header file. */ -#ifndef __SALFORDC__ -#define HAVE_WS2TCPIP_H 1 -#endif - -/* ---------------------------------------------------------------- */ -/* OTHER HEADER INFO */ -/* ---------------------------------------------------------------- */ - -/* Define if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define if you can safely include both and . */ -/* #define TIME_WITH_SYS_TIME 1 */ - -/* ---------------------------------------------------------------- */ -/* FUNCTIONS */ -/* ---------------------------------------------------------------- */ - -/* Define if you have the closesocket function. */ -#define HAVE_CLOSESOCKET 1 - -/* Define if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define if you have the ioctlsocket function. */ -#define HAVE_IOCTLSOCKET 1 - -/* Define if you have a working ioctlsocket FIONBIO function. */ -#define HAVE_IOCTLSOCKET_FIONBIO 1 - -/* Define if you have the strcasecmp function. */ -/* #define HAVE_STRCASECMP 1 */ - -/* Define if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define if you have the stricmp function. */ -#define HAVE_STRICMP 1 - -/* Define if you have the strncasecmp function. */ -/* #define HAVE_STRNCASECMP 1 */ - -/* Define if you have the strnicmp function. */ -#define HAVE_STRNICMP 1 - -/* Define if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 SOCKET - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 char * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 int - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV int - -/* Define if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 SOCKET - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 char - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 int - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 int - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV int - -/* Define if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 SOCKET - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 char * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 int - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV int - -/* Specifics for the Watt-32 tcp/ip stack */ -#ifdef WATT32 - #define SOCKET int - #define NS_INADDRSZ 4 - #define HAVE_ARPA_NAMESER_H 1 - #define HAVE_ARPA_INET_H 1 - #define HAVE_NETDB_H 1 - #define HAVE_NETINET_IN_H 1 - #define HAVE_SYS_SOCKET_H 1 - #define HAVE_NETINET_TCP_H 1 - #define HAVE_AF_INET6 1 - #define HAVE_PF_INET6 1 - #define HAVE_STRUCT_IN6_ADDR 1 - #define HAVE_STRUCT_SOCKADDR_IN6 1 - #undef HAVE_WINSOCK_H - #undef HAVE_WINSOCK2_H - #undef HAVE_WS2TCPIP_H -#endif - -/* ---------------------------------------------------------------- */ -/* TYPEDEF REPLACEMENTS */ -/* ---------------------------------------------------------------- */ - -/* Define this if in_addr_t is not an available 'typedefed' type */ -#define in_addr_t unsigned long - -/* Define as the return type of signal handlers (int or void). */ -#define RETSIGTYPE void - -/* Define ssize_t if it is not an available 'typedefed' type */ -#ifndef _SSIZE_T_DEFINED -# if (defined(__WATCOMC__) && (__WATCOMC__ >= 1240)) || \ - defined(__POCC__) || \ - defined(__MINGW32__) -# elif defined(_WIN64) -# define _SSIZE_T_DEFINED -# define ssize_t __int64 -# else -# define _SSIZE_T_DEFINED -# define ssize_t int -# endif -#endif - -/* ---------------------------------------------------------------- */ -/* TYPE SIZES */ -/* ---------------------------------------------------------------- */ - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `short', as computed by sizeof. */ -#define SIZEOF_SHORT 2 - -/* The size of `size_t', as computed by sizeof. */ -#if defined(_WIN64) -# define SIZEOF_SIZE_T 8 -#else -# define SIZEOF_SIZE_T 4 -#endif - -/* ---------------------------------------------------------------- */ -/* STRUCT RELATED */ -/* ---------------------------------------------------------------- */ - -/* Define this if you have struct addrinfo */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define this if you have struct sockaddr_storage */ -#ifndef __SALFORDC__ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 -#endif - -/* Define this if you have struct timeval */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* ---------------------------------------------------------------- */ -/* COMPILER SPECIFIC */ -/* ---------------------------------------------------------------- */ - -/* Define to avoid VS2005 complaining about portable C functions */ -#if defined(_MSC_VER) && (_MSC_VER >= 1400) -#define _CRT_SECURE_NO_DEPRECATE 1 -#define _CRT_NONSTDC_NO_DEPRECATE 1 -#endif - -/* Officially, Microsoft's Windows SDK versions 6.X do not support Windows - 2000 as a supported build target. VS2008 default installations provide an - embedded Windows SDK v6.0A along with the claim that Windows 2000 is a - valid build target for VS2008. Popular belief is that binaries built using - Windows SDK versions 6.X and Windows 2000 as a build target are functional */ -#if defined(_MSC_VER) && (_MSC_VER >= 1500) -# define VS2008_MINIMUM_TARGET 0x0500 -#endif - -/* When no build target is specified VS2008 default build target is Windows - Vista, which leaves out even Winsows XP. If no build target has been given - for VS2008 we will target the minimum Officially supported build target, - which happens to be Windows XP. */ -#if defined(_MSC_VER) && (_MSC_VER >= 1500) -# define VS2008_DEFAULT_TARGET 0x0501 -#endif - -/* VS2008 default target settings and minimum build target check */ -#if defined(_MSC_VER) && (_MSC_VER >= 1500) -# ifndef _WIN32_WINNT -# define _WIN32_WINNT VS2008_DEFAULT_TARGET -# endif -# ifndef WINVER -# define WINVER VS2008_DEFAULT_TARGET -# endif -# if (_WIN32_WINNT < VS2008_MINIMUM_TARGET) || (WINVER < VS2008_MINIMUM_TARGET) -# error VS2008 does not support Windows build targets prior to Windows 2000 -# endif -#endif - -/* When no build target is specified Pelles C 5.00 and later default build - target is Windows Vista. We override default target to be Windows 2000. */ -#if defined(__POCC__) && (__POCC__ >= 500) -# ifndef _WIN32_WINNT -# define _WIN32_WINNT 0x0500 -# endif -# ifndef WINVER -# define WINVER 0x0500 -# endif -#endif - -/* Availability of freeaddrinfo, getaddrinfo and getnameinfo functions is - quite convoluted, compiler dependent and even build target dependent. */ -#if defined(HAVE_WS2TCPIP_H) -# if defined(__POCC__) -# define HAVE_FREEADDRINFO 1 -# define HAVE_GETADDRINFO 1 -# define HAVE_GETNAMEINFO 1 -# elif defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501) -# define HAVE_FREEADDRINFO 1 -# define HAVE_GETADDRINFO 1 -# define HAVE_GETNAMEINFO 1 -# elif defined(_MSC_VER) && (_MSC_VER >= 1200) -# define HAVE_FREEADDRINFO 1 -# define HAVE_GETADDRINFO 1 -# define HAVE_GETNAMEINFO 1 -# endif -#endif - -#if defined(__POCC__) -# ifndef _MSC_VER -# error Microsoft extensions /Ze compiler option is required -# endif -# ifndef __POCC__OLDNAMES -# error Compatibility names /Go compiler option is required -# endif -#endif - -/* ---------------------------------------------------------------- */ -/* IPV6 COMPATIBILITY */ -/* ---------------------------------------------------------------- */ - -/* Define this if you have address family AF_INET6 */ -#ifdef HAVE_WINSOCK2_H -#define HAVE_AF_INET6 1 -#endif - -/* Define this if you have protocol family PF_INET6 */ -#ifdef HAVE_WINSOCK2_H -#define HAVE_PF_INET6 1 -#endif - -/* Define this if you have struct in6_addr */ -#ifdef HAVE_WS2TCPIP_H -#define HAVE_STRUCT_IN6_ADDR 1 -#endif - -/* Define this if you have struct sockaddr_in6 */ -#ifdef HAVE_WS2TCPIP_H -#define HAVE_STRUCT_SOCKADDR_IN6 1 -#endif - -/* Define this if you have sockaddr_in6 with scopeid */ -#ifdef HAVE_WS2TCPIP_H -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 -#endif - - -#endif /* __ARES_CONFIG_WIN32_H */ diff --git a/deps/uv/c-ares/config_cygwin/ares_config.h b/deps/uv/c-ares/config_cygwin/ares_config.h deleted file mode 100644 index 70595d3617..0000000000 --- a/deps/uv/c-ares/config_cygwin/ares_config.h +++ /dev/null @@ -1,510 +0,0 @@ -/* ares_config.h. Generated from ares_config.h.in by configure. */ -/* ares_config.h.in. Generated from configure.ac by autoheader. */ - -/* Define if building universal (internal helper macro) */ -/* #undef AC_APPLE_UNIVERSAL_BUILD */ - -/* define this if ares is built for a big endian system */ -/* #undef ARES_BIG_ENDIAN */ - -/* when building as static part of libcurl */ -/* #undef BUILDING_LIBCURL */ - -/* when building c-ares library */ -/* #undef CARES_BUILDING_LIBRARY */ - -/* when not building a shared library */ -/* #undef CARES_STATICLIB */ - -/* Define to 1 to enable hiding of library internal symbols. */ -#define CARES_SYMBOL_HIDING 1 - -/* Definition to make a library symbol externally visible. */ -#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default"))) - -/* if a /etc/inet dir is being used */ -/* #undef ETC_INET */ - -/* Define to the type qualifier of arg 1 for getnameinfo. */ -#define GETNAMEINFO_QUAL_ARG1 const - -/* Define to the type of arg 1 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG1 struct sockaddr * - -/* Define to the type of arg 2 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG2 socklen_t - -/* Define to the type of args 4 and 6 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG46 int - -/* Define to the type of arg 7 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG7 int - -/* Specifies the number of arguments to getservbyport_r */ -/* #undef GETSERVBYPORT_R_ARGS */ - -/* Specifies the size of the buffer to pass to getservbyport_r */ -/* #undef GETSERVBYPORT_R_BUFSIZE */ - -/* Define to 1 if you have AF_INET6. */ -#define HAVE_AF_INET6 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_INET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_COMPAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ASSERT_H 1 - -/* Define to 1 if you have the `bitncmp' function. */ -/* #undef HAVE_BITNCMP */ - -/* Define to 1 if bool is an available type. */ -#define HAVE_BOOL_T 1 - -/* Define to 1 if you have the clock_gettime function and monotonic timer. */ -/* #undef HAVE_CLOCK_GETTIME_MONOTONIC */ - -/* Define to 1 if you have the closesocket function. */ -/* #undef HAVE_CLOSESOCKET */ - -/* Define to 1 if you have the CloseSocket camel case function. */ -/* #undef HAVE_CLOSESOCKET_CAMEL */ - -/* Define to 1 if you have the connect function. */ -#define HAVE_CONNECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ERRNO_H 1 - -/* Define to 1 if you have the fcntl function. */ -#define HAVE_FCNTL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ -#define HAVE_FCNTL_O_NONBLOCK 1 - -/* Define to 1 if you have the freeaddrinfo function. */ -#define HAVE_FREEADDRINFO 1 - -/* Define to 1 if you have a working getaddrinfo function. */ -#define HAVE_GETADDRINFO 1 - -/* Define to 1 if the getaddrinfo function is threadsafe. */ -/* #undef HAVE_GETADDRINFO_THREADSAFE */ - -/* Define to 1 if you have the gethostbyaddr function. */ -#define HAVE_GETHOSTBYADDR 1 - -/* Define to 1 if you have the gethostbyname function. */ -#define HAVE_GETHOSTBYNAME 1 - -/* Define to 1 if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define to 1 if you have the getnameinfo function. */ -#define HAVE_GETNAMEINFO 1 - -/* Define to 1 if you have the getservbyport_r function. */ -/* #undef HAVE_GETSERVBYPORT_R */ - -/* Define to 1 if you have the `gettimeofday' function. */ -#define HAVE_GETTIMEOFDAY 1 - -/* Define to 1 if you have the `if_indextoname' function. */ -#define HAVE_IF_INDEXTONAME 1 - -/* Define to 1 if you have the `inet_net_pton' function. */ -/* #undef HAVE_INET_NET_PTON */ - -/* Define to 1 if inet_net_pton supports IPv6. */ -/* #undef HAVE_INET_NET_PTON_IPV6 */ - -/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ -#define HAVE_INET_NTOP 1 - -/* Define to 1 if you have a IPv6 capable working inet_pton function. */ -#define HAVE_INET_PTON 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the ioctl function. */ -#define HAVE_IOCTL 1 - -/* Define to 1 if you have the ioctlsocket function. */ -/* #undef HAVE_IOCTLSOCKET */ - -/* Define to 1 if you have the IoctlSocket camel case function. */ -/* #undef HAVE_IOCTLSOCKET_CAMEL */ - -/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. - */ -/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ - -/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ -/* #undef HAVE_IOCTLSOCKET_FIONBIO */ - -/* Define to 1 if you have a working ioctl FIONBIO function. */ -#define HAVE_IOCTL_FIONBIO 1 - -/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ -#define HAVE_IOCTL_SIOCGIFADDR 1 - -/* Define to 1 if you have the `resolve' library (-lresolve). */ -/* #undef HAVE_LIBRESOLVE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* if your compiler supports LL */ -#define HAVE_LL 1 - -/* Define to 1 if the compiler supports the 'long long' data type. */ -#define HAVE_LONGLONG 1 - -/* Define to 1 if you have the malloc.h header file. */ -#define HAVE_MALLOC_H 1 - -/* Define to 1 if you have the memory.h header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the MSG_NOSIGNAL flag. */ -#define HAVE_MSG_NOSIGNAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETDB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_IN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_TCP_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NET_IF_H 1 - -/* Define to 1 if you have PF_INET6. */ -#define HAVE_PF_INET6 1 - -/* Define to 1 if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to 1 if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to 1 if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to 1 if you have the setsockopt function. */ -#define HAVE_SETSOCKOPT 1 - -/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ -/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define to 1 if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define to 1 if sig_atomic_t is already defined as volatile. */ -/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ - -/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 - -/* Define to 1 if you have the socket function. */ -#define HAVE_SOCKET 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define to 1 if you have the strcmpi function. */ -/* #undef HAVE_STRCMPI */ - -/* Define to 1 if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define to 1 if you have the stricmp function. */ -/* #undef HAVE_STRICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the strncasecmp function. */ -#define HAVE_STRNCASECMP 1 - -/* Define to 1 if you have the strncmpi function. */ -/* #undef HAVE_STRNCMPI */ - -/* Define to 1 if you have the strnicmp function. */ -/* #undef HAVE_STRNICMP */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_STROPTS_H */ - -/* Define to 1 if you have struct addrinfo. */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define to 1 if you have struct in6_addr. */ -#define HAVE_STRUCT_IN6_ADDR 1 - -/* Define to 1 if you have struct sockaddr_in6. */ -#define HAVE_STRUCT_SOCKADDR_IN6 1 - -/* if struct sockaddr_storage is defined */ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 - -/* Define to 1 if you have the timeval struct. */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_IOCTL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SOCKET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_UIO_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the windows.h header file. */ -/* #undef HAVE_WINDOWS_H */ - -/* Define to 1 if you have the winsock2.h header file. */ -/* #undef HAVE_WINSOCK2_H */ - -/* Define to 1 if you have the winsock.h header file. */ -/* #undef HAVE_WINSOCK_H */ - -/* Define to 1 if you have the writev function. */ -#define HAVE_WRITEV 1 - -/* Define to 1 if you have the ws2tcpip.h header file. */ -/* #undef HAVE_WS2TCPIP_H */ - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to 1 if you are building a native Windows target. */ -/* #undef NATIVE_WINDOWS */ - -/* Define to 1 if you need the malloc.h header file even with stdlib.h */ -/* #undef NEED_MALLOC_H */ - -/* Define to 1 if you need the memory.h header file even with stdlib.h */ -/* #undef NEED_MEMORY_H */ - -/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ -/* #undef NEED_REENTRANT */ - -/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ -/* #undef NEED_THREAD_SAFE */ - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* cpu-machine-OS */ -#define OS "i686-pc-cygwin" - -/* Name of package */ -#define PACKAGE "c-ares" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "c-ares" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "c-ares 1.7.1" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "c-ares" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "1.7.1" - -/* a suitable file/device to read random data from */ -#define RANDOM_FILE "/dev/urandom" - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 int - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 void - -/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ -#define RECVFROM_TYPE_ARG2_IS_VOID 1 - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 socklen_t - -/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG6_IS_VOID */ - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV int - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 int - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 void * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV int - -/* Define as the return type of signal handlers (`int' or `void'). */ -#define RETSIGTYPE void - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 int - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 void * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV int - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `long', as computed by sizeof. */ -#define SIZEOF_LONG 4 - -/* The size of `size_t', as computed by sizeof. */ -#define SIZEOF_SIZE_T 4 - -/* The size of `struct in6_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN6_ADDR 16 - -/* The size of `struct in_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN_ADDR 4 - -/* The size of `time_t', as computed by sizeof. */ -#define SIZEOF_TIME_T 4 - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if you can safely include both and . */ -#define TIME_WITH_SYS_TIME 1 - -/* Define to disable non-blocking sockets. */ -/* #undef USE_BLOCKING_SOCKETS */ - -/* Version number of package */ -#define VERSION "1.7.1" - -/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most - significant byte first (like Motorola and SPARC, unlike Intel). */ -#if defined AC_APPLE_UNIVERSAL_BUILD -# if defined __BIG_ENDIAN__ -# define WORDS_BIGENDIAN 1 -# endif -#else -# ifndef WORDS_BIGENDIAN -/* # undef WORDS_BIGENDIAN */ -# endif -#endif - -/* Define to 1 if OS is AIX. */ -#ifndef _ALL_SOURCE -/* # undef _ALL_SOURCE */ -#endif - -/* Number of bits in a file offset, on hosts where this is settable. */ -/* #undef _FILE_OFFSET_BITS */ - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ - -/* Define to empty if `const' does not conform to ANSI C. */ -/* #undef const */ - -/* Type to use in place of in_addr_t when system does not provide it. */ -/* #undef in_addr_t */ - -/* Define to `unsigned int' if does not define. */ -/* #undef size_t */ - -/* the signed version of size_t */ -/* #undef ssize_t */ diff --git a/deps/uv/c-ares/config_darwin/ares_config.h b/deps/uv/c-ares/config_darwin/ares_config.h deleted file mode 100644 index 3722bba10b..0000000000 --- a/deps/uv/c-ares/config_darwin/ares_config.h +++ /dev/null @@ -1,510 +0,0 @@ -/* ares_config.h. Generated from ares_config.h.in by configure. */ -/* ares_config.h.in. Generated from configure.ac by autoheader. */ - -/* Define if building universal (internal helper macro) */ -/* #undef AC_APPLE_UNIVERSAL_BUILD */ - -/* define this if ares is built for a big endian system */ -/* #undef ARES_BIG_ENDIAN */ - -/* when building as static part of libcurl */ -/* #undef BUILDING_LIBCURL */ - -/* when building c-ares library */ -/* #undef CARES_BUILDING_LIBRARY */ - -/* when not building a shared library */ -/* #undef CARES_STATICLIB */ - -/* Define to 1 to enable hiding of library internal symbols. */ -#define CARES_SYMBOL_HIDING 1 - -/* Definition to make a library symbol externally visible. */ -#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default"))) - -/* if a /etc/inet dir is being used */ -/* #undef ETC_INET */ - -/* Define to the type qualifier of arg 1 for getnameinfo. */ -#define GETNAMEINFO_QUAL_ARG1 const - -/* Define to the type of arg 1 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG1 struct sockaddr * - -/* Define to the type of arg 2 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG2 socklen_t - -/* Define to the type of args 4 and 6 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG46 socklen_t - -/* Define to the type of arg 7 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG7 int - -/* Specifies the number of arguments to getservbyport_r */ -/* #undef GETSERVBYPORT_R_ARGS */ - -/* Specifies the size of the buffer to pass to getservbyport_r */ -/* #undef GETSERVBYPORT_R_BUFSIZE */ - -/* Define to 1 if you have AF_INET6. */ -#define HAVE_AF_INET6 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_INET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_COMPAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ASSERT_H 1 - -/* Define to 1 if you have the `bitncmp' function. */ -/* #undef HAVE_BITNCMP */ - -/* Define to 1 if bool is an available type. */ -#define HAVE_BOOL_T 1 - -/* Define to 1 if you have the clock_gettime function and monotonic timer. */ -/* #undef HAVE_CLOCK_GETTIME_MONOTONIC */ - -/* Define to 1 if you have the closesocket function. */ -/* #undef HAVE_CLOSESOCKET */ - -/* Define to 1 if you have the CloseSocket camel case function. */ -/* #undef HAVE_CLOSESOCKET_CAMEL */ - -/* Define to 1 if you have the connect function. */ -#define HAVE_CONNECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ERRNO_H 1 - -/* Define to 1 if you have the fcntl function. */ -#define HAVE_FCNTL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ -#define HAVE_FCNTL_O_NONBLOCK 1 - -/* Define to 1 if you have the freeaddrinfo function. */ -#define HAVE_FREEADDRINFO 1 - -/* Define to 1 if you have a working getaddrinfo function. */ -#define HAVE_GETADDRINFO 1 - -/* Define to 1 if the getaddrinfo function is threadsafe. */ -#define HAVE_GETADDRINFO_THREADSAFE 1 - -/* Define to 1 if you have the gethostbyaddr function. */ -#define HAVE_GETHOSTBYADDR 1 - -/* Define to 1 if you have the gethostbyname function. */ -#define HAVE_GETHOSTBYNAME 1 - -/* Define to 1 if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define to 1 if you have the getnameinfo function. */ -#define HAVE_GETNAMEINFO 1 - -/* Define to 1 if you have the getservbyport_r function. */ -/* #undef HAVE_GETSERVBYPORT_R */ - -/* Define to 1 if you have the `gettimeofday' function. */ -#define HAVE_GETTIMEOFDAY 1 - -/* Define to 1 if you have the `if_indextoname' function. */ -#define HAVE_IF_INDEXTONAME 1 - -/* Define to 1 if you have the `inet_net_pton' function. */ -#define HAVE_INET_NET_PTON 1 - -/* Define to 1 if inet_net_pton supports IPv6. */ -#define HAVE_INET_NET_PTON_IPV6 1 - -/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ -#define HAVE_INET_NTOP 1 - -/* Define to 1 if you have a IPv6 capable working inet_pton function. */ -#define HAVE_INET_PTON 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the ioctl function. */ -#define HAVE_IOCTL 1 - -/* Define to 1 if you have the ioctlsocket function. */ -/* #undef HAVE_IOCTLSOCKET */ - -/* Define to 1 if you have the IoctlSocket camel case function. */ -/* #undef HAVE_IOCTLSOCKET_CAMEL */ - -/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. - */ -/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ - -/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ -/* #undef HAVE_IOCTLSOCKET_FIONBIO */ - -/* Define to 1 if you have a working ioctl FIONBIO function. */ -#define HAVE_IOCTL_FIONBIO 1 - -/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ -#define HAVE_IOCTL_SIOCGIFADDR 1 - -/* Define to 1 if you have the `resolve' library (-lresolve). */ -/* #undef HAVE_LIBRESOLVE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* if your compiler supports LL */ -#define HAVE_LL 1 - -/* Define to 1 if the compiler supports the 'long long' data type. */ -#define HAVE_LONGLONG 1 - -/* Define to 1 if you have the malloc.h header file. */ -/* #undef HAVE_MALLOC_H */ - -/* Define to 1 if you have the memory.h header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the MSG_NOSIGNAL flag. */ -/* #undef HAVE_MSG_NOSIGNAL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_NETDB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_IN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_TCP_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NET_IF_H 1 - -/* Define to 1 if you have PF_INET6. */ -#define HAVE_PF_INET6 1 - -/* Define to 1 if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to 1 if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to 1 if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to 1 if you have the setsockopt function. */ -#define HAVE_SETSOCKOPT 1 - -/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ -/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define to 1 if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define to 1 if sig_atomic_t is already defined as volatile. */ -/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ - -/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 - -/* Define to 1 if you have the socket function. */ -#define HAVE_SOCKET 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define to 1 if you have the strcmpi function. */ -/* #undef HAVE_STRCMPI */ - -/* Define to 1 if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define to 1 if you have the stricmp function. */ -/* #undef HAVE_STRICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the strncasecmp function. */ -#define HAVE_STRNCASECMP 1 - -/* Define to 1 if you have the strncmpi function. */ -/* #undef HAVE_STRNCMPI */ - -/* Define to 1 if you have the strnicmp function. */ -/* #undef HAVE_STRNICMP */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_STROPTS_H */ - -/* Define to 1 if you have struct addrinfo. */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define to 1 if you have struct in6_addr. */ -#define HAVE_STRUCT_IN6_ADDR 1 - -/* Define to 1 if you have struct sockaddr_in6. */ -#define HAVE_STRUCT_SOCKADDR_IN6 1 - -/* if struct sockaddr_storage is defined */ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 - -/* Define to 1 if you have the timeval struct. */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_IOCTL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SOCKET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_UIO_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the windows.h header file. */ -/* #undef HAVE_WINDOWS_H */ - -/* Define to 1 if you have the winsock2.h header file. */ -/* #undef HAVE_WINSOCK2_H */ - -/* Define to 1 if you have the winsock.h header file. */ -/* #undef HAVE_WINSOCK_H */ - -/* Define to 1 if you have the writev function. */ -#define HAVE_WRITEV 1 - -/* Define to 1 if you have the ws2tcpip.h header file. */ -/* #undef HAVE_WS2TCPIP_H */ - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to 1 if you are building a native Windows target. */ -/* #undef NATIVE_WINDOWS */ - -/* Define to 1 if you need the malloc.h header file even with stdlib.h */ -/* #undef NEED_MALLOC_H */ - -/* Define to 1 if you need the memory.h header file even with stdlib.h */ -/* #undef NEED_MEMORY_H */ - -/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ -/* #undef NEED_REENTRANT */ - -/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ -/* #undef NEED_THREAD_SAFE */ - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* cpu-machine-OS */ -#define OS "i386-apple-darwin9.8.0" - -/* Name of package */ -#define PACKAGE "c-ares" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "c-ares" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "c-ares 1.7.1" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "c-ares" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "1.7.1" - -/* a suitable file/device to read random data from */ -#define RANDOM_FILE "/dev/urandom" - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 int - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 void - -/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ -#define RECVFROM_TYPE_ARG2_IS_VOID 1 - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 socklen_t - -/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG6_IS_VOID */ - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV ssize_t - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 int - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 void * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV ssize_t - -/* Define as the return type of signal handlers (`int' or `void'). */ -#define RETSIGTYPE void - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 int - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 void * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV ssize_t - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `long', as computed by sizeof. */ -#define SIZEOF_LONG 4 - -/* The size of `size_t', as computed by sizeof. */ -#define SIZEOF_SIZE_T 4 - -/* The size of `struct in6_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN6_ADDR 16 - -/* The size of `struct in_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN_ADDR 4 - -/* The size of `time_t', as computed by sizeof. */ -#define SIZEOF_TIME_T 4 - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if you can safely include both and . */ -#define TIME_WITH_SYS_TIME 1 - -/* Define to disable non-blocking sockets. */ -/* #undef USE_BLOCKING_SOCKETS */ - -/* Version number of package */ -#define VERSION "1.7.1" - -/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most - significant byte first (like Motorola and SPARC, unlike Intel). */ -#if defined AC_APPLE_UNIVERSAL_BUILD -# if defined __BIG_ENDIAN__ -# define WORDS_BIGENDIAN 1 -# endif -#else -# ifndef WORDS_BIGENDIAN -/* # undef WORDS_BIGENDIAN */ -# endif -#endif - -/* Define to 1 if OS is AIX. */ -#ifndef _ALL_SOURCE -/* # undef _ALL_SOURCE */ -#endif - -/* Number of bits in a file offset, on hosts where this is settable. */ -/* #undef _FILE_OFFSET_BITS */ - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ - -/* Define to empty if `const' does not conform to ANSI C. */ -/* #undef const */ - -/* Type to use in place of in_addr_t when system does not provide it. */ -/* #undef in_addr_t */ - -/* Define to `unsigned int' if does not define. */ -/* #undef size_t */ - -/* the signed version of size_t */ -/* #undef ssize_t */ diff --git a/deps/uv/c-ares/config_freebsd/ares_config.h b/deps/uv/c-ares/config_freebsd/ares_config.h deleted file mode 100644 index 4164edb3e2..0000000000 --- a/deps/uv/c-ares/config_freebsd/ares_config.h +++ /dev/null @@ -1,510 +0,0 @@ -/* ares_config.h. Generated from ares_config.h.in by configure. */ -/* ares_config.h.in. Generated from configure.ac by autoheader. */ - -/* Define if building universal (internal helper macro) */ -/* #undef AC_APPLE_UNIVERSAL_BUILD */ - -/* define this if ares is built for a big endian system */ -/* #undef ARES_BIG_ENDIAN */ - -/* when building as static part of libcurl */ -/* #undef BUILDING_LIBCURL */ - -/* when building c-ares library */ -/* #undef CARES_BUILDING_LIBRARY */ - -/* when not building a shared library */ -/* #undef CARES_STATICLIB */ - -/* Define to 1 to enable hiding of library internal symbols. */ -#define CARES_SYMBOL_HIDING 1 - -/* Definition to make a library symbol externally visible. */ -#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default"))) - -/* if a /etc/inet dir is being used */ -/* #undef ETC_INET */ - -/* Define to the type qualifier of arg 1 for getnameinfo. */ -#define GETNAMEINFO_QUAL_ARG1 const - -/* Define to the type of arg 1 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG1 struct sockaddr * - -/* Define to the type of arg 2 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG2 socklen_t - -/* Define to the type of args 4 and 6 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG46 size_t - -/* Define to the type of arg 7 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG7 int - -/* Specifies the number of arguments to getservbyport_r */ -#define GETSERVBYPORT_R_ARGS 6 - -/* Specifies the size of the buffer to pass to getservbyport_r */ -#define GETSERVBYPORT_R_BUFSIZE 4096 - -/* Define to 1 if you have AF_INET6. */ -#define HAVE_AF_INET6 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_INET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_COMPAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ASSERT_H 1 - -/* Define to 1 if you have the `bitncmp' function. */ -/* #undef HAVE_BITNCMP */ - -/* Define to 1 if bool is an available type. */ -#define HAVE_BOOL_T 1 - -/* Define to 1 if you have the clock_gettime function and monotonic timer. */ -#define HAVE_CLOCK_GETTIME_MONOTONIC 1 - -/* Define to 1 if you have the closesocket function. */ -/* #undef HAVE_CLOSESOCKET */ - -/* Define to 1 if you have the CloseSocket camel case function. */ -/* #undef HAVE_CLOSESOCKET_CAMEL */ - -/* Define to 1 if you have the connect function. */ -#define HAVE_CONNECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ERRNO_H 1 - -/* Define to 1 if you have the fcntl function. */ -#define HAVE_FCNTL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ -#define HAVE_FCNTL_O_NONBLOCK 1 - -/* Define to 1 if you have the freeaddrinfo function. */ -#define HAVE_FREEADDRINFO 1 - -/* Define to 1 if you have a working getaddrinfo function. */ -#define HAVE_GETADDRINFO 1 - -/* Define to 1 if the getaddrinfo function is threadsafe. */ -#define HAVE_GETADDRINFO_THREADSAFE 1 - -/* Define to 1 if you have the gethostbyaddr function. */ -#define HAVE_GETHOSTBYADDR 1 - -/* Define to 1 if you have the gethostbyname function. */ -#define HAVE_GETHOSTBYNAME 1 - -/* Define to 1 if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define to 1 if you have the getnameinfo function. */ -#define HAVE_GETNAMEINFO 1 - -/* Define to 1 if you have the getservbyport_r function. */ -#define HAVE_GETSERVBYPORT_R 1 - -/* Define to 1 if you have the `gettimeofday' function. */ -#define HAVE_GETTIMEOFDAY 1 - -/* Define to 1 if you have the `if_indextoname' function. */ -#define HAVE_IF_INDEXTONAME 1 - -/* Define to 1 if you have the `inet_net_pton' function. */ -#define HAVE_INET_NET_PTON 1 - -/* Define to 1 if inet_net_pton supports IPv6. */ -/* #undef HAVE_INET_NET_PTON_IPV6 */ - -/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ -#define HAVE_INET_NTOP 1 - -/* Define to 1 if you have a IPv6 capable working inet_pton function. */ -#define HAVE_INET_PTON 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the ioctl function. */ -#define HAVE_IOCTL 1 - -/* Define to 1 if you have the ioctlsocket function. */ -/* #undef HAVE_IOCTLSOCKET */ - -/* Define to 1 if you have the IoctlSocket camel case function. */ -/* #undef HAVE_IOCTLSOCKET_CAMEL */ - -/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. - */ -/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ - -/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ -/* #undef HAVE_IOCTLSOCKET_FIONBIO */ - -/* Define to 1 if you have a working ioctl FIONBIO function. */ -#define HAVE_IOCTL_FIONBIO 1 - -/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ -#define HAVE_IOCTL_SIOCGIFADDR 1 - -/* Define to 1 if you have the `resolve' library (-lresolve). */ -/* #undef HAVE_LIBRESOLVE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* if your compiler supports LL */ -#define HAVE_LL 1 - -/* Define to 1 if the compiler supports the 'long long' data type. */ -#define HAVE_LONGLONG 1 - -/* Define to 1 if you have the malloc.h header file. */ -/* #undef HAVE_MALLOC_H */ - -/* Define to 1 if you have the memory.h header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the MSG_NOSIGNAL flag. */ -#define HAVE_MSG_NOSIGNAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETDB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_IN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_TCP_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NET_IF_H 1 - -/* Define to 1 if you have PF_INET6. */ -#define HAVE_PF_INET6 1 - -/* Define to 1 if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to 1 if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to 1 if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to 1 if you have the setsockopt function. */ -#define HAVE_SETSOCKOPT 1 - -/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ -/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define to 1 if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define to 1 if sig_atomic_t is already defined as volatile. */ -/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ - -/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 - -/* Define to 1 if you have the socket function. */ -#define HAVE_SOCKET 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define to 1 if you have the strcmpi function. */ -/* #undef HAVE_STRCMPI */ - -/* Define to 1 if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define to 1 if you have the stricmp function. */ -/* #undef HAVE_STRICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the strncasecmp function. */ -#define HAVE_STRNCASECMP 1 - -/* Define to 1 if you have the strncmpi function. */ -/* #undef HAVE_STRNCMPI */ - -/* Define to 1 if you have the strnicmp function. */ -/* #undef HAVE_STRNICMP */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_STROPTS_H */ - -/* Define to 1 if you have struct addrinfo. */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define to 1 if you have struct in6_addr. */ -#define HAVE_STRUCT_IN6_ADDR 1 - -/* Define to 1 if you have struct sockaddr_in6. */ -#define HAVE_STRUCT_SOCKADDR_IN6 1 - -/* if struct sockaddr_storage is defined */ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 - -/* Define to 1 if you have the timeval struct. */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_IOCTL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SOCKET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_UIO_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the windows.h header file. */ -/* #undef HAVE_WINDOWS_H */ - -/* Define to 1 if you have the winsock2.h header file. */ -/* #undef HAVE_WINSOCK2_H */ - -/* Define to 1 if you have the winsock.h header file. */ -/* #undef HAVE_WINSOCK_H */ - -/* Define to 1 if you have the writev function. */ -#define HAVE_WRITEV 1 - -/* Define to 1 if you have the ws2tcpip.h header file. */ -/* #undef HAVE_WS2TCPIP_H */ - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to 1 if you are building a native Windows target. */ -/* #undef NATIVE_WINDOWS */ - -/* Define to 1 if you need the malloc.h header file even with stdlib.h */ -/* #undef NEED_MALLOC_H */ - -/* Define to 1 if you need the memory.h header file even with stdlib.h */ -/* #undef NEED_MEMORY_H */ - -/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ -/* #undef NEED_REENTRANT */ - -/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ -/* #undef NEED_THREAD_SAFE */ - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* cpu-machine-OS */ -#define OS "i386-portbld-freebsd8.0" - -/* Name of package */ -#define PACKAGE "c-ares" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "c-ares" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "c-ares 1.7.1" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "c-ares" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "1.7.1" - -/* a suitable file/device to read random data from */ -#define RANDOM_FILE "/dev/urandom" - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 int - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 void - -/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ -#define RECVFROM_TYPE_ARG2_IS_VOID 1 - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 socklen_t - -/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG6_IS_VOID */ - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV int - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 int - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 void * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV int - -/* Define as the return type of signal handlers (`int' or `void'). */ -#define RETSIGTYPE void - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 int - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 void * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV int - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `long', as computed by sizeof. */ -#define SIZEOF_LONG 4 - -/* The size of `size_t', as computed by sizeof. */ -#define SIZEOF_SIZE_T 4 - -/* The size of `struct in6_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN6_ADDR 16 - -/* The size of `struct in_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN_ADDR 4 - -/* The size of `time_t', as computed by sizeof. */ -#define SIZEOF_TIME_T 4 - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if you can safely include both and . */ -#define TIME_WITH_SYS_TIME 1 - -/* Define to disable non-blocking sockets. */ -/* #undef USE_BLOCKING_SOCKETS */ - -/* Version number of package */ -#define VERSION "1.7.1" - -/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most - significant byte first (like Motorola and SPARC, unlike Intel). */ -#if defined AC_APPLE_UNIVERSAL_BUILD -# if defined __BIG_ENDIAN__ -# define WORDS_BIGENDIAN 1 -# endif -#else -# ifndef WORDS_BIGENDIAN -/* # undef WORDS_BIGENDIAN */ -# endif -#endif - -/* Define to 1 if OS is AIX. */ -#ifndef _ALL_SOURCE -/* # undef _ALL_SOURCE */ -#endif - -/* Number of bits in a file offset, on hosts where this is settable. */ -/* #undef _FILE_OFFSET_BITS */ - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ - -/* Define to empty if `const' does not conform to ANSI C. */ -/* #undef const */ - -/* Type to use in place of in_addr_t when system does not provide it. */ -/* #undef in_addr_t */ - -/* Define to `unsigned int' if does not define. */ -/* #undef size_t */ - -/* the signed version of size_t */ -/* #undef ssize_t */ diff --git a/deps/uv/c-ares/config_linux/ares_config.h b/deps/uv/c-ares/config_linux/ares_config.h deleted file mode 100644 index dca6476eb5..0000000000 --- a/deps/uv/c-ares/config_linux/ares_config.h +++ /dev/null @@ -1,510 +0,0 @@ -/* ares_config.h. Generated from ares_config.h.in by configure. */ -/* ares_config.h.in. Generated from configure.ac by autoheader. */ - -/* Define if building universal (internal helper macro) */ -/* #undef AC_APPLE_UNIVERSAL_BUILD */ - -/* define this if ares is built for a big endian system */ -/* #undef ARES_BIG_ENDIAN */ - -/* when building as static part of libcurl */ -/* #undef BUILDING_LIBCURL */ - -/* when building c-ares library */ -/* #undef CARES_BUILDING_LIBRARY */ - -/* when not building a shared library */ -/* #undef CARES_STATICLIB */ - -/* Define to 1 to enable hiding of library internal symbols. */ -#define CARES_SYMBOL_HIDING 1 - -/* Definition to make a library symbol externally visible. */ -#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default"))) - -/* if a /etc/inet dir is being used */ -/* #undef ETC_INET */ - -/* Define to the type qualifier of arg 1 for getnameinfo. */ -#define GETNAMEINFO_QUAL_ARG1 const - -/* Define to the type of arg 1 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG1 struct sockaddr * - -/* Define to the type of arg 2 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG2 socklen_t - -/* Define to the type of args 4 and 6 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG46 size_t - -/* Define to the type of arg 7 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG7 unsigned int - -/* Specifies the number of arguments to getservbyport_r */ -#define GETSERVBYPORT_R_ARGS 6 - -/* Specifies the size of the buffer to pass to getservbyport_r */ -#define GETSERVBYPORT_R_BUFSIZE 4096 - -/* Define to 1 if you have AF_INET6. */ -#define HAVE_AF_INET6 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_INET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_COMPAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ASSERT_H 1 - -/* Define to 1 if you have the `bitncmp' function. */ -/* #undef HAVE_BITNCMP */ - -/* Define to 1 if bool is an available type. */ -#define HAVE_BOOL_T 1 - -/* Define to 1 if you have the clock_gettime function and monotonic timer. */ -#define HAVE_CLOCK_GETTIME_MONOTONIC 1 - -/* Define to 1 if you have the closesocket function. */ -/* #undef HAVE_CLOSESOCKET */ - -/* Define to 1 if you have the CloseSocket camel case function. */ -/* #undef HAVE_CLOSESOCKET_CAMEL */ - -/* Define to 1 if you have the connect function. */ -#define HAVE_CONNECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ERRNO_H 1 - -/* Define to 1 if you have the fcntl function. */ -#define HAVE_FCNTL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ -#define HAVE_FCNTL_O_NONBLOCK 1 - -/* Define to 1 if you have the freeaddrinfo function. */ -#define HAVE_FREEADDRINFO 1 - -/* Define to 1 if you have a working getaddrinfo function. */ -#define HAVE_GETADDRINFO 1 - -/* Define to 1 if the getaddrinfo function is threadsafe. */ -#define HAVE_GETADDRINFO_THREADSAFE 1 - -/* Define to 1 if you have the gethostbyaddr function. */ -#define HAVE_GETHOSTBYADDR 1 - -/* Define to 1 if you have the gethostbyname function. */ -#define HAVE_GETHOSTBYNAME 1 - -/* Define to 1 if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define to 1 if you have the getnameinfo function. */ -#define HAVE_GETNAMEINFO 1 - -/* Define to 1 if you have the getservbyport_r function. */ -#define HAVE_GETSERVBYPORT_R 1 - -/* Define to 1 if you have the `gettimeofday' function. */ -#define HAVE_GETTIMEOFDAY 1 - -/* Define to 1 if you have the `if_indextoname' function. */ -#define HAVE_IF_INDEXTONAME 1 - -/* Define to 1 if you have the `inet_net_pton' function. */ -/* #undef HAVE_INET_NET_PTON */ - -/* Define to 1 if inet_net_pton supports IPv6. */ -/* #undef HAVE_INET_NET_PTON_IPV6 */ - -/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ -#define HAVE_INET_NTOP 1 - -/* Define to 1 if you have a IPv6 capable working inet_pton function. */ -#define HAVE_INET_PTON 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the ioctl function. */ -#define HAVE_IOCTL 1 - -/* Define to 1 if you have the ioctlsocket function. */ -/* #undef HAVE_IOCTLSOCKET */ - -/* Define to 1 if you have the IoctlSocket camel case function. */ -/* #undef HAVE_IOCTLSOCKET_CAMEL */ - -/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. - */ -/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ - -/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ -/* #undef HAVE_IOCTLSOCKET_FIONBIO */ - -/* Define to 1 if you have a working ioctl FIONBIO function. */ -#define HAVE_IOCTL_FIONBIO 1 - -/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ -#define HAVE_IOCTL_SIOCGIFADDR 1 - -/* Define to 1 if you have the `resolve' library (-lresolve). */ -/* #undef HAVE_LIBRESOLVE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* if your compiler supports LL */ -#define HAVE_LL 1 - -/* Define to 1 if the compiler supports the 'long long' data type. */ -#define HAVE_LONGLONG 1 - -/* Define to 1 if you have the malloc.h header file. */ -#define HAVE_MALLOC_H 1 - -/* Define to 1 if you have the memory.h header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the MSG_NOSIGNAL flag. */ -#define HAVE_MSG_NOSIGNAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETDB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_IN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_TCP_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NET_IF_H 1 - -/* Define to 1 if you have PF_INET6. */ -#define HAVE_PF_INET6 1 - -/* Define to 1 if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to 1 if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to 1 if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to 1 if you have the setsockopt function. */ -#define HAVE_SETSOCKOPT 1 - -/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ -/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define to 1 if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define to 1 if sig_atomic_t is already defined as volatile. */ -/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ - -/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 - -/* Define to 1 if you have the socket function. */ -#define HAVE_SOCKET 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define to 1 if you have the strcmpi function. */ -/* #undef HAVE_STRCMPI */ - -/* Define to 1 if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define to 1 if you have the stricmp function. */ -/* #undef HAVE_STRICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the strncasecmp function. */ -#define HAVE_STRNCASECMP 1 - -/* Define to 1 if you have the strncmpi function. */ -/* #undef HAVE_STRNCMPI */ - -/* Define to 1 if you have the strnicmp function. */ -/* #undef HAVE_STRNICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STROPTS_H 1 - -/* Define to 1 if you have struct addrinfo. */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define to 1 if you have struct in6_addr. */ -#define HAVE_STRUCT_IN6_ADDR 1 - -/* Define to 1 if you have struct sockaddr_in6. */ -#define HAVE_STRUCT_SOCKADDR_IN6 1 - -/* if struct sockaddr_storage is defined */ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 - -/* Define to 1 if you have the timeval struct. */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_IOCTL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SOCKET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_UIO_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the windows.h header file. */ -/* #undef HAVE_WINDOWS_H */ - -/* Define to 1 if you have the winsock2.h header file. */ -/* #undef HAVE_WINSOCK2_H */ - -/* Define to 1 if you have the winsock.h header file. */ -/* #undef HAVE_WINSOCK_H */ - -/* Define to 1 if you have the writev function. */ -#define HAVE_WRITEV 1 - -/* Define to 1 if you have the ws2tcpip.h header file. */ -/* #undef HAVE_WS2TCPIP_H */ - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to 1 if you are building a native Windows target. */ -/* #undef NATIVE_WINDOWS */ - -/* Define to 1 if you need the malloc.h header file even with stdlib.h */ -/* #undef NEED_MALLOC_H */ - -/* Define to 1 if you need the memory.h header file even with stdlib.h */ -/* #undef NEED_MEMORY_H */ - -/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ -/* #undef NEED_REENTRANT */ - -/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ -/* #undef NEED_THREAD_SAFE */ - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* cpu-machine-OS */ -#define OS "i686-pc-linux-gnu" - -/* Name of package */ -#define PACKAGE "c-ares" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "c-ares" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "c-ares 1.7.1" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "c-ares" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "1.7.1" - -/* a suitable file/device to read random data from */ -#define RANDOM_FILE "/dev/urandom" - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 int - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 void - -/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ -#define RECVFROM_TYPE_ARG2_IS_VOID 1 - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 socklen_t - -/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG6_IS_VOID */ - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV int - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 int - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 void * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV int - -/* Define as the return type of signal handlers (`int' or `void'). */ -#define RETSIGTYPE void - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 int - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 void * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV int - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `long', as computed by sizeof. */ -#define SIZEOF_LONG 4 - -/* The size of `size_t', as computed by sizeof. */ -#define SIZEOF_SIZE_T 4 - -/* The size of `struct in6_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN6_ADDR 16 - -/* The size of `struct in_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN_ADDR 4 - -/* The size of `time_t', as computed by sizeof. */ -#define SIZEOF_TIME_T 4 - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if you can safely include both and . */ -#define TIME_WITH_SYS_TIME 1 - -/* Define to disable non-blocking sockets. */ -/* #undef USE_BLOCKING_SOCKETS */ - -/* Version number of package */ -#define VERSION "1.7.1" - -/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most - significant byte first (like Motorola and SPARC, unlike Intel). */ -#if defined AC_APPLE_UNIVERSAL_BUILD -# if defined __BIG_ENDIAN__ -# define WORDS_BIGENDIAN 1 -# endif -#else -# ifndef WORDS_BIGENDIAN -/* # undef WORDS_BIGENDIAN */ -# endif -#endif - -/* Define to 1 if OS is AIX. */ -#ifndef _ALL_SOURCE -/* # undef _ALL_SOURCE */ -#endif - -/* Number of bits in a file offset, on hosts where this is settable. */ -#define _FILE_OFFSET_BITS 64 - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ - -/* Define to empty if `const' does not conform to ANSI C. */ -/* #undef const */ - -/* Type to use in place of in_addr_t when system does not provide it. */ -/* #undef in_addr_t */ - -/* Define to `unsigned int' if does not define. */ -/* #undef size_t */ - -/* the signed version of size_t */ -/* #undef ssize_t */ diff --git a/deps/uv/c-ares/config_openbsd/ares_config.h b/deps/uv/c-ares/config_openbsd/ares_config.h deleted file mode 100644 index 5e3ae68864..0000000000 --- a/deps/uv/c-ares/config_openbsd/ares_config.h +++ /dev/null @@ -1,510 +0,0 @@ -/* ares_config.h. Generated from ares_config.h.in by configure. */ -/* ares_config.h.in. Generated from configure.ac by autoheader. */ - -/* Define if building universal (internal helper macro) */ -/* #undef AC_APPLE_UNIVERSAL_BUILD */ - -/* define this if ares is built for a big endian system */ -/* #undef ARES_BIG_ENDIAN */ - -/* when building as static part of libcurl */ -/* #undef BUILDING_LIBCURL */ - -/* when building c-ares library */ -/* #undef CARES_BUILDING_LIBRARY */ - -/* when not building a shared library */ -/* #undef CARES_STATICLIB */ - -/* Define to 1 to enable hiding of library internal symbols. */ -/* #undef CARES_SYMBOL_HIDING */ - -/* Definition to make a library symbol externally visible. */ -/* #undef CARES_SYMBOL_SCOPE_EXTERN */ - -/* if a /etc/inet dir is being used */ -/* #undef ETC_INET */ - -/* Define to the type qualifier of arg 1 for getnameinfo. */ -#define GETNAMEINFO_QUAL_ARG1 const - -/* Define to the type of arg 1 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG1 struct sockaddr * - -/* Define to the type of arg 2 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG2 socklen_t - -/* Define to the type of args 4 and 6 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG46 size_t - -/* Define to the type of arg 7 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG7 int - -/* Specifies the number of arguments to getservbyport_r */ -#define GETSERVBYPORT_R_ARGS 4 - -/* Specifies the size of the buffer to pass to getservbyport_r */ -#define GETSERVBYPORT_R_BUFSIZE sizeof(struct servent_data) - -/* Define to 1 if you have AF_INET6. */ -#define HAVE_AF_INET6 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_INET_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_ARPA_NAMESER_COMPAT_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ASSERT_H 1 - -/* Define to 1 if you have the `bitncmp' function. */ -/* #undef HAVE_BITNCMP */ - -/* Define to 1 if bool is an available type. */ -#define HAVE_BOOL_T 1 - -/* Define to 1 if you have the clock_gettime function and monotonic timer. */ -#define HAVE_CLOCK_GETTIME_MONOTONIC 1 - -/* Define to 1 if you have the closesocket function. */ -/* #undef HAVE_CLOSESOCKET */ - -/* Define to 1 if you have the CloseSocket camel case function. */ -/* #undef HAVE_CLOSESOCKET_CAMEL */ - -/* Define to 1 if you have the connect function. */ -#define HAVE_CONNECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ERRNO_H 1 - -/* Define to 1 if you have the fcntl function. */ -#define HAVE_FCNTL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ -#define HAVE_FCNTL_O_NONBLOCK 1 - -/* Define to 1 if you have the freeaddrinfo function. */ -#define HAVE_FREEADDRINFO 1 - -/* Define to 1 if you have a working getaddrinfo function. */ -#define HAVE_GETADDRINFO 1 - -/* Define to 1 if the getaddrinfo function is threadsafe. */ -/* #undef HAVE_GETADDRINFO_THREADSAFE */ - -/* Define to 1 if you have the gethostbyaddr function. */ -#define HAVE_GETHOSTBYADDR 1 - -/* Define to 1 if you have the gethostbyname function. */ -#define HAVE_GETHOSTBYNAME 1 - -/* Define to 1 if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define to 1 if you have the getnameinfo function. */ -#define HAVE_GETNAMEINFO 1 - -/* Define to 1 if you have the getservbyport_r function. */ -#define HAVE_GETSERVBYPORT_R 1 - -/* Define to 1 if you have the `gettimeofday' function. */ -#define HAVE_GETTIMEOFDAY 1 - -/* Define to 1 if you have the `if_indextoname' function. */ -#define HAVE_IF_INDEXTONAME 1 - -/* Define to 1 if you have the `inet_net_pton' function. */ -#define HAVE_INET_NET_PTON 1 - -/* Define to 1 if inet_net_pton supports IPv6. */ -/* #undef HAVE_INET_NET_PTON_IPV6 */ - -/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ -#define HAVE_INET_NTOP 1 - -/* Define to 1 if you have a IPv6 capable working inet_pton function. */ -#define HAVE_INET_PTON 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the ioctl function. */ -#define HAVE_IOCTL 1 - -/* Define to 1 if you have the ioctlsocket function. */ -/* #undef HAVE_IOCTLSOCKET */ - -/* Define to 1 if you have the IoctlSocket camel case function. */ -/* #undef HAVE_IOCTLSOCKET_CAMEL */ - -/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. - */ -/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ - -/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ -/* #undef HAVE_IOCTLSOCKET_FIONBIO */ - -/* Define to 1 if you have a working ioctl FIONBIO function. */ -#define HAVE_IOCTL_FIONBIO 1 - -/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ -#define HAVE_IOCTL_SIOCGIFADDR 1 - -/* Define to 1 if you have the `resolve' library (-lresolve). */ -/* #undef HAVE_LIBRESOLVE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* if your compiler supports LL */ -#define HAVE_LL 1 - -/* Define to 1 if the compiler supports the 'long long' data type. */ -#define HAVE_LONGLONG 1 - -/* Define to 1 if you have the malloc.h header file. */ -#define HAVE_MALLOC_H 1 - -/* Define to 1 if you have the memory.h header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the MSG_NOSIGNAL flag. */ -/* #undef HAVE_MSG_NOSIGNAL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_NETDB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_IN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_TCP_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NET_IF_H 1 - -/* Define to 1 if you have PF_INET6. */ -#define HAVE_PF_INET6 1 - -/* Define to 1 if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to 1 if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to 1 if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to 1 if you have the setsockopt function. */ -#define HAVE_SETSOCKOPT 1 - -/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ -/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define to 1 if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define to 1 if sig_atomic_t is already defined as volatile. */ -/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ - -/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 - -/* Define to 1 if you have the socket function. */ -#define HAVE_SOCKET 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define to 1 if you have the strcmpi function. */ -/* #undef HAVE_STRCMPI */ - -/* Define to 1 if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define to 1 if you have the stricmp function. */ -/* #undef HAVE_STRICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the strncasecmp function. */ -#define HAVE_STRNCASECMP 1 - -/* Define to 1 if you have the strncmpi function. */ -/* #undef HAVE_STRNCMPI */ - -/* Define to 1 if you have the strnicmp function. */ -/* #undef HAVE_STRNICMP */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_STROPTS_H */ - -/* Define to 1 if you have struct addrinfo. */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define to 1 if you have struct in6_addr. */ -#define HAVE_STRUCT_IN6_ADDR 1 - -/* Define to 1 if you have struct sockaddr_in6. */ -#define HAVE_STRUCT_SOCKADDR_IN6 1 - -/* if struct sockaddr_storage is defined */ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 - -/* Define to 1 if you have the timeval struct. */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_IOCTL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SOCKET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_UIO_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the windows.h header file. */ -/* #undef HAVE_WINDOWS_H */ - -/* Define to 1 if you have the winsock2.h header file. */ -/* #undef HAVE_WINSOCK2_H */ - -/* Define to 1 if you have the winsock.h header file. */ -/* #undef HAVE_WINSOCK_H */ - -/* Define to 1 if you have the writev function. */ -#define HAVE_WRITEV 1 - -/* Define to 1 if you have the ws2tcpip.h header file. */ -/* #undef HAVE_WS2TCPIP_H */ - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to 1 if you are building a native Windows target. */ -/* #undef NATIVE_WINDOWS */ - -/* Define to 1 if you need the malloc.h header file even with stdlib.h */ -/* #undef NEED_MALLOC_H */ - -/* Define to 1 if you need the memory.h header file even with stdlib.h */ -/* #undef NEED_MEMORY_H */ - -/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ -/* #undef NEED_REENTRANT */ - -/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ -/* #undef NEED_THREAD_SAFE */ - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* cpu-machine-OS */ -#define OS "i386-unknown-openbsd4.7" - -/* Name of package */ -#define PACKAGE "c-ares" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "c-ares" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "c-ares 1.7.1" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "c-ares" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "1.7.1" - -/* a suitable file/device to read random data from */ -#define RANDOM_FILE "/dev/urandom" - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 int - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 void - -/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ -#define RECVFROM_TYPE_ARG2_IS_VOID 1 - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 socklen_t - -/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG6_IS_VOID */ - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV int - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 int - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 void * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV int - -/* Define as the return type of signal handlers (`int' or `void'). */ -#define RETSIGTYPE void - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 int - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 void * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV int - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `long', as computed by sizeof. */ -#define SIZEOF_LONG 4 - -/* The size of `size_t', as computed by sizeof. */ -#define SIZEOF_SIZE_T 4 - -/* The size of `struct in6_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN6_ADDR 16 - -/* The size of `struct in_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN_ADDR 4 - -/* The size of `time_t', as computed by sizeof. */ -#define SIZEOF_TIME_T 4 - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if you can safely include both and . */ -#define TIME_WITH_SYS_TIME 1 - -/* Define to disable non-blocking sockets. */ -/* #undef USE_BLOCKING_SOCKETS */ - -/* Version number of package */ -#define VERSION "1.7.1" - -/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most - significant byte first (like Motorola and SPARC, unlike Intel). */ -#if defined AC_APPLE_UNIVERSAL_BUILD -# if defined __BIG_ENDIAN__ -# define WORDS_BIGENDIAN 1 -# endif -#else -# ifndef WORDS_BIGENDIAN -/* # undef WORDS_BIGENDIAN */ -# endif -#endif - -/* Define to 1 if OS is AIX. */ -#ifndef _ALL_SOURCE -/* # undef _ALL_SOURCE */ -#endif - -/* Number of bits in a file offset, on hosts where this is settable. */ -/* #undef _FILE_OFFSET_BITS */ - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ - -/* Define to empty if `const' does not conform to ANSI C. */ -/* #undef const */ - -/* Type to use in place of in_addr_t when system does not provide it. */ -/* #undef in_addr_t */ - -/* Define to `unsigned int' if does not define. */ -/* #undef size_t */ - -/* the signed version of size_t */ -/* #undef ssize_t */ diff --git a/deps/uv/c-ares/config_sunos/ares_config.h b/deps/uv/c-ares/config_sunos/ares_config.h deleted file mode 100644 index 836de9f5dd..0000000000 --- a/deps/uv/c-ares/config_sunos/ares_config.h +++ /dev/null @@ -1,510 +0,0 @@ -/* ares_config.h. Generated from ares_config.h.in by configure. */ -/* ares_config.h.in. Generated from configure.ac by autoheader. */ - -/* Define if building universal (internal helper macro) */ -/* #undef AC_APPLE_UNIVERSAL_BUILD */ - -/* define this if ares is built for a big endian system */ -/* #undef ARES_BIG_ENDIAN */ - -/* when building as static part of libcurl */ -/* #undef BUILDING_LIBCURL */ - -/* when building c-ares library */ -/* #undef CARES_BUILDING_LIBRARY */ - -/* when not building a shared library */ -/* #undef CARES_STATICLIB */ - -/* Define to 1 to enable hiding of library internal symbols. */ -/* #undef CARES_SYMBOL_HIDING */ - -/* Definition to make a library symbol externally visible. */ -/* #undef CARES_SYMBOL_SCOPE_EXTERN */ - -/* if a /etc/inet dir is being used */ -#define ETC_INET 1 - -/* Define to the type qualifier of arg 1 for getnameinfo. */ -#define GETNAMEINFO_QUAL_ARG1 const - -/* Define to the type of arg 1 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG1 struct sockaddr * - -/* Define to the type of arg 2 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG2 socklen_t - -/* Define to the type of args 4 and 6 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG46 size_t - -/* Define to the type of arg 7 for getnameinfo. */ -#define GETNAMEINFO_TYPE_ARG7 int - -/* Specifies the number of arguments to getservbyport_r */ -#define GETSERVBYPORT_R_ARGS 5 - -/* Specifies the size of the buffer to pass to getservbyport_r */ -#define GETSERVBYPORT_R_BUFSIZE 4096 - -/* Define to 1 if you have AF_INET6. */ -#define HAVE_AF_INET6 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_INET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_COMPAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ARPA_NAMESER_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ASSERT_H 1 - -/* Define to 1 if you have the `bitncmp' function. */ -/* #undef HAVE_BITNCMP */ - -/* Define to 1 if bool is an available type. */ -#define HAVE_BOOL_T 1 - -/* Define to 1 if you have the clock_gettime function and monotonic timer. */ -#define HAVE_CLOCK_GETTIME_MONOTONIC 1 - -/* Define to 1 if you have the closesocket function. */ -/* #undef HAVE_CLOSESOCKET */ - -/* Define to 1 if you have the CloseSocket camel case function. */ -/* #undef HAVE_CLOSESOCKET_CAMEL */ - -/* Define to 1 if you have the connect function. */ -#define HAVE_CONNECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_ERRNO_H 1 - -/* Define to 1 if you have the fcntl function. */ -#define HAVE_FCNTL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ -#define HAVE_FCNTL_O_NONBLOCK 1 - -/* Define to 1 if you have the freeaddrinfo function. */ -#define HAVE_FREEADDRINFO 1 - -/* Define to 1 if you have a working getaddrinfo function. */ -#define HAVE_GETADDRINFO 1 - -/* Define to 1 if the getaddrinfo function is threadsafe. */ -#define HAVE_GETADDRINFO_THREADSAFE 1 - -/* Define to 1 if you have the gethostbyaddr function. */ -#define HAVE_GETHOSTBYADDR 1 - -/* Define to 1 if you have the gethostbyname function. */ -#define HAVE_GETHOSTBYNAME 1 - -/* Define to 1 if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define to 1 if you have the getnameinfo function. */ -#define HAVE_GETNAMEINFO 1 - -/* Define to 1 if you have the getservbyport_r function. */ -#define HAVE_GETSERVBYPORT_R 1 - -/* Define to 1 if you have the `gettimeofday' function. */ -#define HAVE_GETTIMEOFDAY 1 - -/* Define to 1 if you have the `if_indextoname' function. */ -#define HAVE_IF_INDEXTONAME 1 - -/* Define to 1 if you have the `inet_net_pton' function. */ -/* #undef HAVE_INET_NET_PTON */ - -/* Define to 1 if inet_net_pton supports IPv6. */ -/* #undef HAVE_INET_NET_PTON_IPV6 */ - -/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ -#define HAVE_INET_NTOP 1 - -/* Define to 1 if you have a IPv6 capable working inet_pton function. */ -#define HAVE_INET_PTON 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the ioctl function. */ -#define HAVE_IOCTL 1 - -/* Define to 1 if you have the ioctlsocket function. */ -/* #undef HAVE_IOCTLSOCKET */ - -/* Define to 1 if you have the IoctlSocket camel case function. */ -/* #undef HAVE_IOCTLSOCKET_CAMEL */ - -/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. - */ -/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ - -/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ -/* #undef HAVE_IOCTLSOCKET_FIONBIO */ - -/* Define to 1 if you have a working ioctl FIONBIO function. */ -/* #undef HAVE_IOCTL_FIONBIO */ - -/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ -/* #undef HAVE_IOCTL_SIOCGIFADDR */ - -/* Define to 1 if you have the `resolve' library (-lresolve). */ -/* #undef HAVE_LIBRESOLVE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* if your compiler supports LL */ -#define HAVE_LL 1 - -/* Define to 1 if the compiler supports the 'long long' data type. */ -#define HAVE_LONGLONG 1 - -/* Define to 1 if you have the malloc.h header file. */ -#define HAVE_MALLOC_H 1 - -/* Define to 1 if you have the memory.h header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the MSG_NOSIGNAL flag. */ -/* #undef HAVE_MSG_NOSIGNAL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_NETDB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_IN_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NETINET_TCP_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_NET_IF_H 1 - -/* Define to 1 if you have PF_INET6. */ -#define HAVE_PF_INET6 1 - -/* Define to 1 if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to 1 if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to 1 if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to 1 if you have the setsockopt function. */ -#define HAVE_SETSOCKOPT 1 - -/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ -/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define to 1 if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define to 1 if sig_atomic_t is already defined as volatile. */ -/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ - -/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 - -/* Define to 1 if you have the socket function. */ -#define HAVE_SOCKET 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define to 1 if you have the strcmpi function. */ -/* #undef HAVE_STRCMPI */ - -/* Define to 1 if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define to 1 if you have the stricmp function. */ -/* #undef HAVE_STRICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the strncasecmp function. */ -#define HAVE_STRNCASECMP 1 - -/* Define to 1 if you have the strncmpi function. */ -/* #undef HAVE_STRNCMPI */ - -/* Define to 1 if you have the strnicmp function. */ -/* #undef HAVE_STRNICMP */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STROPTS_H 1 - -/* Define to 1 if you have struct addrinfo. */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define to 1 if you have struct in6_addr. */ -#define HAVE_STRUCT_IN6_ADDR 1 - -/* Define to 1 if you have struct sockaddr_in6. */ -#define HAVE_STRUCT_SOCKADDR_IN6 1 - -/* if struct sockaddr_storage is defined */ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 - -/* Define to 1 if you have the timeval struct. */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_IOCTL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SOCKET_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_UIO_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the windows.h header file. */ -/* #undef HAVE_WINDOWS_H */ - -/* Define to 1 if you have the winsock2.h header file. */ -/* #undef HAVE_WINSOCK2_H */ - -/* Define to 1 if you have the winsock.h header file. */ -/* #undef HAVE_WINSOCK_H */ - -/* Define to 1 if you have the writev function. */ -#define HAVE_WRITEV 1 - -/* Define to 1 if you have the ws2tcpip.h header file. */ -/* #undef HAVE_WS2TCPIP_H */ - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to 1 if you are building a native Windows target. */ -/* #undef NATIVE_WINDOWS */ - -/* Define to 1 if you need the malloc.h header file even with stdlib.h */ -/* #undef NEED_MALLOC_H */ - -/* Define to 1 if you need the memory.h header file even with stdlib.h */ -/* #undef NEED_MEMORY_H */ - -/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ -#define NEED_REENTRANT 1 - -/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ -/* #undef NEED_THREAD_SAFE */ - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* cpu-machine-OS */ -#define OS "i386-pc-solaris2.11" - -/* Name of package */ -#define PACKAGE "c-ares" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "c-ares" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "c-ares 1.7.1" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "c-ares" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "1.7.1" - -/* a suitable file/device to read random data from */ -#define RANDOM_FILE "/dev/urandom" - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 int - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 void - -/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ -#define RECVFROM_TYPE_ARG2_IS_VOID 1 - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 void - -/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ -#define RECVFROM_TYPE_ARG6_IS_VOID 1 - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV int - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 int - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 void * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV int - -/* Define as the return type of signal handlers (`int' or `void'). */ -#define RETSIGTYPE void - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 int - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 void * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 size_t - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV int - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `long', as computed by sizeof. */ -#define SIZEOF_LONG 4 - -/* The size of `size_t', as computed by sizeof. */ -#define SIZEOF_SIZE_T 4 - -/* The size of `struct in6_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN6_ADDR 16 - -/* The size of `struct in_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN_ADDR 4 - -/* The size of `time_t', as computed by sizeof. */ -#define SIZEOF_TIME_T 4 - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if you can safely include both and . */ -#define TIME_WITH_SYS_TIME 1 - -/* Define to disable non-blocking sockets. */ -/* #undef USE_BLOCKING_SOCKETS */ - -/* Version number of package */ -#define VERSION "1.7.1" - -/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most - significant byte first (like Motorola and SPARC, unlike Intel). */ -#if defined AC_APPLE_UNIVERSAL_BUILD -# if defined __BIG_ENDIAN__ -# define WORDS_BIGENDIAN 1 -# endif -#else -# ifndef WORDS_BIGENDIAN -/* # undef WORDS_BIGENDIAN */ -# endif -#endif - -/* Define to 1 if OS is AIX. */ -#ifndef _ALL_SOURCE -/* # undef _ALL_SOURCE */ -#endif - -/* Number of bits in a file offset, on hosts where this is settable. */ -#define _FILE_OFFSET_BITS 64 - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ - -/* Define to empty if `const' does not conform to ANSI C. */ -/* #undef const */ - -/* Type to use in place of in_addr_t when system does not provide it. */ -/* #undef in_addr_t */ - -/* Define to `unsigned int' if does not define. */ -/* #undef size_t */ - -/* the signed version of size_t */ -/* #undef ssize_t */ diff --git a/deps/uv/c-ares/config_win32/ares_config.h b/deps/uv/c-ares/config_win32/ares_config.h deleted file mode 100644 index a1f3c320f9..0000000000 --- a/deps/uv/c-ares/config_win32/ares_config.h +++ /dev/null @@ -1,510 +0,0 @@ -/* ares_config.h. Generated from ares_config.h.in by configure. */ -/* ares_config.h.in. Generated from configure.ac by autoheader. */ - -/* Define if building universal (internal helper macro) */ -/* #undef AC_APPLE_UNIVERSAL_BUILD */ - -/* define this if ares is built for a big endian system */ -/* #undef ARES_BIG_ENDIAN */ - -/* when building as static part of libcurl */ -/* #undef BUILDING_LIBCURL */ - -/* when building c-ares library */ -/* #undef CARES_BUILDING_LIBRARY */ - -/* when not building a shared library */ -#define CARES_STATICLIB 1 - -/* Define to 1 to enable hiding of library internal symbols. */ -/* #undef CARES_SYMBOL_HIDING */ - -/* Definition to make a library symbol externally visible. */ -/* #undef CARES_SYMBOL_SCOPE_EXTERN */ - -/* if a /etc/inet dir is being used */ -/* #undef ETC_INET */ - -/* Define to the type qualifier of arg 1 for getnameinfo. */ -/* #undef GETNAMEINFO_QUAL_ARG1 */ - -/* Define to the type of arg 1 for getnameinfo. */ -/* #undef GETNAMEINFO_TYPE_ARG1 */ - -/* Define to the type of arg 2 for getnameinfo. */ -/* #undef GETNAMEINFO_TYPE_ARG2 */ - -/* Define to the type of args 4 and 6 for getnameinfo. */ -/* #undef GETNAMEINFO_TYPE_ARG46 */ - -/* Define to the type of arg 7 for getnameinfo. */ -/* #undef GETNAMEINFO_TYPE_ARG7 */ - -/* Specifies the number of arguments to getservbyport_r */ -/* #undef GETSERVBYPORT_R_ARGS */ - -/* Specifies the size of the buffer to pass to getservbyport_r */ -/* #undef GETSERVBYPORT_R_BUFSIZE */ - -/* Define to 1 if you have AF_INET6. */ -#define HAVE_AF_INET6 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_ARPA_INET_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_ARPA_NAMESER_COMPAT_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_ARPA_NAMESER_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_ASSERT_H 1 - -/* Define to 1 if you have the `bitncmp' function. */ -/* #undef HAVE_BITNCMP */ - -/* Define to 1 if bool is an available type. */ -#define HAVE_BOOL_T 1 - -/* Define to 1 if you have the clock_gettime function and monotonic timer. */ -/* #undef HAVE_CLOCK_GETTIME_MONOTONIC */ - -/* Define to 1 if you have the closesocket function. */ -#define HAVE_CLOSESOCKET 1 - -/* Define to 1 if you have the CloseSocket camel case function. */ -/* #undef HAVE_CLOSESOCKET_CAMEL */ - -/* Define to 1 if you have the connect function. */ -#define HAVE_CONNECT 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_DLFCN_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_ERRNO_H 1 - -/* Define to 1 if you have the fcntl function. */ -/* #undef HAVE_FCNTL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ -/* #undef HAVE_FCNTL_O_NONBLOCK */ - -/* Define to 1 if you have the freeaddrinfo function. */ -/* #undef HAVE_FREEADDRINFO */ - -/* Define to 1 if you have a working getaddrinfo function. */ -/* #undef HAVE_GETADDRINFO */ - -/* Define to 1 if the getaddrinfo function is threadsafe. */ -/* #undef HAVE_GETADDRINFO_THREADSAFE */ - -/* Define to 1 if you have the gethostbyaddr function. */ -#define HAVE_GETHOSTBYADDR 1 - -/* Define to 1 if you have the gethostbyname function. */ -#define HAVE_GETHOSTBYNAME 1 - -/* Define to 1 if you have the gethostname function. */ -#define HAVE_GETHOSTNAME 1 - -/* Define to 1 if you have the getnameinfo function. */ -/* #undef HAVE_GETNAMEINFO */ - -/* Define to 1 if you have the getservbyport_r function. */ -/* #undef HAVE_GETSERVBYPORT_R */ - -/* Define to 1 if you have the `gettimeofday' function. */ -#define HAVE_GETTIMEOFDAY 1 - -/* Define to 1 if you have the `if_indextoname' function. */ -/* #undef HAVE_IF_INDEXTONAME */ - -/* Define to 1 if you have the `inet_net_pton' function. */ -/* #undef HAVE_INET_NET_PTON */ - -/* Define to 1 if inet_net_pton supports IPv6. */ -/* #undef HAVE_INET_NET_PTON_IPV6 */ - -/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ -/* #undef HAVE_INET_NTOP */ - -/* Define to 1 if you have a IPv6 capable working inet_pton function. */ -/* #undef HAVE_INET_PTON */ - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the ioctl function. */ -/* #undef HAVE_IOCTL */ - -/* Define to 1 if you have the ioctlsocket function. */ -#define HAVE_IOCTLSOCKET 1 - -/* Define to 1 if you have the IoctlSocket camel case function. */ -/* #undef HAVE_IOCTLSOCKET_CAMEL */ - -/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. - */ -/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ - -/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ -#define HAVE_IOCTLSOCKET_FIONBIO 1 - -/* Define to 1 if you have a working ioctl FIONBIO function. */ -/* #undef HAVE_IOCTL_FIONBIO */ - -/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ -/* #undef HAVE_IOCTL_SIOCGIFADDR */ - -/* Define to 1 if you have the `resolve' library (-lresolve). */ -/* #undef HAVE_LIBRESOLVE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* if your compiler supports LL */ -#define HAVE_LL 1 - -/* Define to 1 if the compiler supports the 'long long' data type. */ -#define HAVE_LONGLONG 1 - -/* Define to 1 if you have the malloc.h header file. */ -#define HAVE_MALLOC_H 1 - -/* Define to 1 if you have the memory.h header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the MSG_NOSIGNAL flag. */ -/* #undef HAVE_MSG_NOSIGNAL */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_NETDB_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_NETINET_IN_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_NETINET_TCP_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_NET_IF_H */ - -/* Define to 1 if you have PF_INET6. */ -#define HAVE_PF_INET6 1 - -/* Define to 1 if you have the recv function. */ -#define HAVE_RECV 1 - -/* Define to 1 if you have the recvfrom function. */ -#define HAVE_RECVFROM 1 - -/* Define to 1 if you have the send function. */ -#define HAVE_SEND 1 - -/* Define to 1 if you have the setsockopt function. */ -#define HAVE_SETSOCKOPT 1 - -/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ -/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SIGNAL_H 1 - -/* Define to 1 if sig_atomic_t is an available typedef. */ -#define HAVE_SIG_ATOMIC_T 1 - -/* Define to 1 if sig_atomic_t is already defined as volatile. */ -/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ - -/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ -#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 - -/* Define to 1 if you have the socket function. */ -#define HAVE_SOCKET 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define to 1 if you have the strcmpi function. */ -#define HAVE_STRCMPI 1 - -/* Define to 1 if you have the strdup function. */ -#define HAVE_STRDUP 1 - -/* Define to 1 if you have the stricmp function. */ -#define HAVE_STRICMP 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the strncasecmp function. */ -#define HAVE_STRNCASECMP 1 - -/* Define to 1 if you have the strncmpi function. */ -/* #undef HAVE_STRNCMPI */ - -/* Define to 1 if you have the strnicmp function. */ -/* #undef HAVE_STRNICMP */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_STROPTS_H */ - -/* Define to 1 if you have struct addrinfo. */ -#define HAVE_STRUCT_ADDRINFO 1 - -/* Define to 1 if you have struct in6_addr. */ -#define HAVE_STRUCT_IN6_ADDR 1 - -/* Define to 1 if you have struct sockaddr_in6. */ -#define HAVE_STRUCT_SOCKADDR_IN6 1 - -/* if struct sockaddr_storage is defined */ -#define HAVE_STRUCT_SOCKADDR_STORAGE 1 - -/* Define to 1 if you have the timeval struct. */ -#define HAVE_STRUCT_TIMEVAL 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_IOCTL_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_SELECT_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_SOCKET_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_UIO_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_TIME_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the windows.h header file. */ -#define HAVE_WINDOWS_H 1 - -/* Define to 1 if you have the winsock2.h header file. */ -#define HAVE_WINSOCK2_H 1 - -/* Define to 1 if you have the winsock.h header file. */ -#define HAVE_WINSOCK_H 1 - -/* Define to 1 if you have the writev function. */ -/* #undef HAVE_WRITEV */ - -/* Define to 1 if you have the ws2tcpip.h header file. */ -#define HAVE_WS2TCPIP_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to 1 if you are building a native Windows target. */ -#define NATIVE_WINDOWS 1 - -/* Define to 1 if you need the malloc.h header file even with stdlib.h */ -/* #undef NEED_MALLOC_H */ - -/* Define to 1 if you need the memory.h header file even with stdlib.h */ -/* #undef NEED_MEMORY_H */ - -/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ -/* #undef NEED_REENTRANT */ - -/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ -/* #undef NEED_THREAD_SAFE */ - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* cpu-machine-OS */ -#define OS "i686-pc-mingw32" - -/* Name of package */ -#define PACKAGE "c-ares" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "c-ares" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "c-ares 1.7.3" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "c-ares" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "1.7.3" - -/* a suitable file/device to read random data from */ -#define RANDOM_FILE "/dev/urandom" - -/* Define to the type of arg 1 for recvfrom. */ -#define RECVFROM_TYPE_ARG1 SOCKET - -/* Define to the type pointed by arg 2 for recvfrom. */ -#define RECVFROM_TYPE_ARG2 char - -/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG2_IS_VOID */ - -/* Define to the type of arg 3 for recvfrom. */ -#define RECVFROM_TYPE_ARG3 int - -/* Define to the type of arg 4 for recvfrom. */ -#define RECVFROM_TYPE_ARG4 int - -/* Define to the type pointed by arg 5 for recvfrom. */ -#define RECVFROM_TYPE_ARG5 struct sockaddr - -/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ - -/* Define to the type pointed by arg 6 for recvfrom. */ -#define RECVFROM_TYPE_ARG6 int - -/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ -/* #undef RECVFROM_TYPE_ARG6_IS_VOID */ - -/* Define to the function return type for recvfrom. */ -#define RECVFROM_TYPE_RETV int - -/* Define to the type of arg 1 for recv. */ -#define RECV_TYPE_ARG1 SOCKET - -/* Define to the type of arg 2 for recv. */ -#define RECV_TYPE_ARG2 char * - -/* Define to the type of arg 3 for recv. */ -#define RECV_TYPE_ARG3 int - -/* Define to the type of arg 4 for recv. */ -#define RECV_TYPE_ARG4 int - -/* Define to the function return type for recv. */ -#define RECV_TYPE_RETV int - -/* Define as the return type of signal handlers (`int' or `void'). */ -#define RETSIGTYPE void - -/* Define to the type qualifier of arg 2 for send. */ -#define SEND_QUAL_ARG2 const - -/* Define to the type of arg 1 for send. */ -#define SEND_TYPE_ARG1 SOCKET - -/* Define to the type of arg 2 for send. */ -#define SEND_TYPE_ARG2 char * - -/* Define to the type of arg 3 for send. */ -#define SEND_TYPE_ARG3 int - -/* Define to the type of arg 4 for send. */ -#define SEND_TYPE_ARG4 int - -/* Define to the function return type for send. */ -#define SEND_TYPE_RETV int - -/* The size of `int', as computed by sizeof. */ -#define SIZEOF_INT 4 - -/* The size of `long', as computed by sizeof. */ -#define SIZEOF_LONG 4 - -/* The size of `size_t', as computed by sizeof. */ -#define SIZEOF_SIZE_T 4 - -/* The size of `struct in6_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN6_ADDR 16 - -/* The size of `struct in_addr', as computed by sizeof. */ -#define SIZEOF_STRUCT_IN_ADDR 4 - -/* The size of `time_t', as computed by sizeof. */ -#define SIZEOF_TIME_T 4 - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if you can safely include both and . */ -#define TIME_WITH_SYS_TIME 1 - -/* Define to disable non-blocking sockets. */ -/* #undef USE_BLOCKING_SOCKETS */ - -/* Version number of package */ -#define VERSION "1.7.3" - -/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most - significant byte first (like Motorola and SPARC, unlike Intel). */ -#if defined AC_APPLE_UNIVERSAL_BUILD -# if defined __BIG_ENDIAN__ -# define WORDS_BIGENDIAN 1 -# endif -#else -# ifndef WORDS_BIGENDIAN -/* # undef WORDS_BIGENDIAN */ -# endif -#endif - -/* Define to 1 if OS is AIX. */ -#ifndef _ALL_SOURCE -/* # undef _ALL_SOURCE */ -#endif - -/* Number of bits in a file offset, on hosts where this is settable. */ -/* #undef _FILE_OFFSET_BITS */ - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ - -/* Define to empty if `const' does not conform to ANSI C. */ -/* #undef const */ - -/* Type to use in place of in_addr_t when system does not provide it. */ -#define in_addr_t unsigned long - -/* Define to `unsigned int' if does not define. */ -/* #undef size_t */ - -/* the signed version of size_t */ -/* #undef ssize_t */ diff --git a/deps/uv/c-ares/get_ver.awk b/deps/uv/c-ares/get_ver.awk deleted file mode 100644 index a63c729a9d..0000000000 --- a/deps/uv/c-ares/get_ver.awk +++ /dev/null @@ -1,35 +0,0 @@ -# *************************************************************************** -# * Project: c-ares -# * -# *************************************************************************** -# awk script which fetches c-ares version number and string from input -# file and writes them to STDOUT. Here you can get an awk version for Win32: -# http://www.gknw.net/development/prgtools/awk-20070501.zip -# -BEGIN { - if (match (ARGV[1], /ares_version.h/)) { - while ((getline < ARGV[1]) > 0) { - if (match ($0, /^#define ARES_COPYRIGHT "[^"]+"$/)) { - libcares_copyright_str = substr($0, 25, length($0)-25); - } - else if (match ($0, /^#define ARES_VERSION_STR "[^"]+"$/)) { - libcares_ver_str = substr($3, 2, length($3)-2); - } - else if (match ($0, /^#define ARES_VERSION_MAJOR [0-9]+$/)) { - libcares_ver_major = substr($3, 1, length($3)); - } - else if (match ($0, /^#define ARES_VERSION_MINOR [0-9]+$/)) { - libcares_ver_minor = substr($3, 1, length($3)); - } - else if (match ($0, /^#define ARES_VERSION_PATCH [0-9]+$/)) { - libcares_ver_patch = substr($3, 1, length($3)); - } - } - libcares_ver = libcares_ver_major "," libcares_ver_minor "," libcares_ver_patch; - print "LIBCARES_VERSION = " libcares_ver ""; - print "LIBCARES_VERSION_STR = " libcares_ver_str ""; - print "LIBCARES_COPYRIGHT_STR = " libcares_copyright_str ""; - } -} - - diff --git a/deps/uv/c-ares/inet_net_pton.c b/deps/uv/c-ares/inet_net_pton.c deleted file mode 100644 index 0b2accf197..0000000000 --- a/deps/uv/c-ares/inet_net_pton.c +++ /dev/null @@ -1,450 +0,0 @@ - -/* - * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") - * Copyright (c) 1996,1999 by Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT - * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include -#include -#include - -#include "ares.h" -#include "ares_ipv6.h" -#include "inet_net_pton.h" - - -const struct ares_in6_addr ares_in6addr_any = { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }; - - -#if !defined(HAVE_INET_NET_PTON) || !defined(HAVE_INET_NET_PTON_IPV6) - -/* - * static int - * inet_net_pton_ipv4(src, dst, size) - * convert IPv4 network number from presentation to network format. - * accepts hex octets, hex strings, decimal octets, and /CIDR. - * "size" is in bytes and describes "dst". - * return: - * number of bits, either imputed classfully or specified with /CIDR, - * or -1 if some failure occurred (check errno). ENOENT means it was - * not an IPv4 network specification. - * note: - * network byte order assumed. this means 192.5.5.240/28 has - * 0b11110000 in its fourth octet. - * note: - * On Windows we store the error in the thread errno, not - * in the winsock error code. This is to avoid loosing the - * actual last winsock error. So use macro ERRNO to fetch the - * errno this funtion sets when returning (-1), not SOCKERRNO. - * author: - * Paul Vixie (ISC), June 1996 - */ -static int -inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size) -{ - static const char xdigits[] = "0123456789abcdef"; - static const char digits[] = "0123456789"; - int n, ch, tmp = 0, dirty, bits; - const unsigned char *odst = dst; - - ch = *src++; - if (ch == '0' && (src[0] == 'x' || src[0] == 'X') - && ISXDIGIT(src[1])) { - /* Hexadecimal: Eat nybble string. */ - if (!size) - goto emsgsize; - dirty = 0; - src++; /* skip x or X. */ - while ((ch = *src++) != '\0' && ISXDIGIT(ch)) { - if (ISUPPER(ch)) - ch = tolower(ch); - n = (int)(strchr(xdigits, ch) - xdigits); - if (dirty == 0) - tmp = n; - else - tmp = (tmp << 4) | n; - if (++dirty == 2) { - if (!size--) - goto emsgsize; - *dst++ = (unsigned char) tmp; - dirty = 0; - } - } - if (dirty) { /* Odd trailing nybble? */ - if (!size--) - goto emsgsize; - *dst++ = (unsigned char) (tmp << 4); - } - } else if (ISDIGIT(ch)) { - /* Decimal: eat dotted digit string. */ - for (;;) { - tmp = 0; - do { - n = (int)(strchr(digits, ch) - digits); - tmp *= 10; - tmp += n; - if (tmp > 255) - goto enoent; - } while ((ch = *src++) != '\0' && - ISDIGIT(ch)); - if (!size--) - goto emsgsize; - *dst++ = (unsigned char) tmp; - if (ch == '\0' || ch == '/') - break; - if (ch != '.') - goto enoent; - ch = *src++; - if (!ISDIGIT(ch)) - goto enoent; - } - } else - goto enoent; - - bits = -1; - if (ch == '/' && - ISDIGIT(src[0]) && dst > odst) { - /* CIDR width specifier. Nothing can follow it. */ - ch = *src++; /* Skip over the /. */ - bits = 0; - do { - n = (int)(strchr(digits, ch) - digits); - bits *= 10; - bits += n; - } while ((ch = *src++) != '\0' && ISDIGIT(ch)); - if (ch != '\0') - goto enoent; - if (bits > 32) - goto emsgsize; - } - - /* Firey death and destruction unless we prefetched EOS. */ - if (ch != '\0') - goto enoent; - - /* If nothing was written to the destination, we found no address. */ - if (dst == odst) - goto enoent; - /* If no CIDR spec was given, infer width from net class. */ - if (bits == -1) { - if (*odst >= 240) /* Class E */ - bits = 32; - else if (*odst >= 224) /* Class D */ - bits = 8; - else if (*odst >= 192) /* Class C */ - bits = 24; - else if (*odst >= 128) /* Class B */ - bits = 16; - else /* Class A */ - bits = 8; - /* If imputed mask is narrower than specified octets, widen. */ - if (bits < ((dst - odst) * 8)) - bits = (int)(dst - odst) * 8; - /* - * If there are no additional bits specified for a class D - * address adjust bits to 4. - */ - if (bits == 8 && *odst == 224) - bits = 4; - } - /* Extend network to cover the actual mask. */ - while (bits > ((dst - odst) * 8)) { - if (!size--) - goto emsgsize; - *dst++ = '\0'; - } - return (bits); - - enoent: - SET_ERRNO(ENOENT); - return (-1); - - emsgsize: - SET_ERRNO(EMSGSIZE); - return (-1); -} - -static int -getbits(const char *src, int *bitsp) -{ - static const char digits[] = "0123456789"; - int n; - int val; - char ch; - - val = 0; - n = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - pch = strchr(digits, ch); - if (pch != NULL) { - if (n++ != 0 && val == 0) /* no leading zeros */ - return (0); - val *= 10; - val += (pch - digits); - if (val > 128) /* range */ - return (0); - continue; - } - return (0); - } - if (n == 0) - return (0); - *bitsp = val; - return (1); -} - -static int -getv4(const char *src, unsigned char *dst, int *bitsp) -{ - static const char digits[] = "0123456789"; - unsigned char *odst = dst; - int n; - unsigned int val; - char ch; - - val = 0; - n = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - pch = strchr(digits, ch); - if (pch != NULL) { - if (n++ != 0 && val == 0) /* no leading zeros */ - return (0); - val *= 10; - val += (pch - digits); - if (val > 255) /* range */ - return (0); - continue; - } - if (ch == '.' || ch == '/') { - if (dst - odst > 3) /* too many octets? */ - return (0); - *dst++ = (unsigned char)val; - if (ch == '/') - return (getbits(src, bitsp)); - val = 0; - n = 0; - continue; - } - return (0); - } - if (n == 0) - return (0); - if (dst - odst > 3) /* too many octets? */ - return (0); - *dst++ = (unsigned char)val; - return (1); -} - -static int -inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size) -{ - static const char xdigits_l[] = "0123456789abcdef", - xdigits_u[] = "0123456789ABCDEF"; - unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; - const char *xdigits, *curtok; - int ch, saw_xdigit; - unsigned int val; - int digits; - int bits; - size_t bytes; - int words; - int ipv4; - - memset((tp = tmp), '\0', NS_IN6ADDRSZ); - endp = tp + NS_IN6ADDRSZ; - colonp = NULL; - /* Leading :: requires some special handling. */ - if (*src == ':') - if (*++src != ':') - goto enoent; - curtok = src; - saw_xdigit = 0; - val = 0; - digits = 0; - bits = -1; - ipv4 = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) - pch = strchr((xdigits = xdigits_u), ch); - if (pch != NULL) { - val <<= 4; - val |= (pch - xdigits); - if (++digits > 4) - goto enoent; - saw_xdigit = 1; - continue; - } - if (ch == ':') { - curtok = src; - if (!saw_xdigit) { - if (colonp) - goto enoent; - colonp = tp; - continue; - } else if (*src == '\0') - goto enoent; - if (tp + NS_INT16SZ > endp) - return (0); - *tp++ = (unsigned char)((val >> 8) & 0xff); - *tp++ = (unsigned char)(val & 0xff); - saw_xdigit = 0; - digits = 0; - val = 0; - continue; - } - if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && - getv4(curtok, tp, &bits) > 0) { - tp += NS_INADDRSZ; - saw_xdigit = 0; - ipv4 = 1; - break; /* '\0' was seen by inet_pton4(). */ - } - if (ch == '/' && getbits(src, &bits) > 0) - break; - goto enoent; - } - if (saw_xdigit) { - if (tp + NS_INT16SZ > endp) - goto enoent; - *tp++ = (unsigned char)((val >> 8) & 0xff); - *tp++ = (unsigned char)(val & 0xff); - } - if (bits == -1) - bits = 128; - - words = (bits + 15) / 16; - if (words < 2) - words = 2; - if (ipv4) - words = 8; - endp = tmp + 2 * words; - - if (colonp != NULL) { - /* - * Since some memmove()'s erroneously fail to handle - * overlapping regions, we'll do the shift by hand. - */ - const ssize_t n = tp - colonp; - ssize_t i; - - if (tp == endp) - goto enoent; - for (i = 1; i <= n; i++) { - *(endp - i) = *(colonp + n - i); - *(colonp + n - i) = 0; - } - tp = endp; - } - if (tp != endp) - goto enoent; - - bytes = (bits + 7) / 8; - if (bytes > size) - goto emsgsize; - memcpy(dst, tmp, bytes); - return (bits); - - enoent: - SET_ERRNO(ENOENT); - return (-1); - - emsgsize: - SET_ERRNO(EMSGSIZE); - return (-1); -} - -/* - * int - * inet_net_pton(af, src, dst, size) - * convert network number from presentation to network format. - * accepts hex octets, hex strings, decimal octets, and /CIDR. - * "size" is in bytes and describes "dst". - * return: - * number of bits, either imputed classfully or specified with /CIDR, - * or -1 if some failure occurred (check errno). ENOENT means it was - * not a valid network specification. - * note: - * On Windows we store the error in the thread errno, not - * in the winsock error code. This is to avoid loosing the - * actual last winsock error. So use macro ERRNO to fetch the - * errno this funtion sets when returning (-1), not SOCKERRNO. - * author: - * Paul Vixie (ISC), June 1996 - */ -int -ares_inet_net_pton(int af, const char *src, void *dst, size_t size) -{ - switch (af) { - case AF_INET: - return (inet_net_pton_ipv4(src, dst, size)); - case AF_INET6: - return (inet_net_pton_ipv6(src, dst, size)); - default: - SET_ERRNO(EAFNOSUPPORT); - return (-1); - } -} - -#endif - -#ifndef HAVE_INET_PTON -int ares_inet_pton(int af, const char *src, void *dst) -{ - int result; - size_t size; - - if (af == AF_INET) - size = sizeof(struct in_addr); - else if (af == AF_INET6) - size = sizeof(struct ares_in6_addr); - else - { - SET_ERRNO(EAFNOSUPPORT); - return -1; - } - result = ares_inet_net_pton(af, src, dst, size); - if (result == -1 && ERRNO == ENOENT) - return 0; - return (result > -1 ? 1 : -1); -} -#endif diff --git a/deps/uv/c-ares/inet_net_pton.h b/deps/uv/c-ares/inet_net_pton.h deleted file mode 100644 index e04bc11b16..0000000000 --- a/deps/uv/c-ares/inet_net_pton.h +++ /dev/null @@ -1,31 +0,0 @@ -#ifndef __ARES_INET_NET_PTON_H -#define __ARES_INET_NET_PTON_H - - -/* Copyright (C) 2005 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#ifdef HAVE_INET_PTON -#define ares_inet_pton(x,y,z) inet_pton(x,y,z) -#else -int ares_inet_pton(int af, const char *src, void *dst); -#endif -#if defined(HAVE_INET_NET_PTON) && defined(HAVE_INET_NET_PTON_IPV6) -#define ares_inet_net_pton(w,x,y,z) inet_net_pton(w,x,y,z) -#else -int ares_inet_net_pton(int af, const char *src, void *dst, size_t size); -#endif - -#endif /* __ARES_INET_NET_PTON_H */ diff --git a/deps/uv/c-ares/inet_ntop.c b/deps/uv/c-ares/inet_ntop.c deleted file mode 100644 index 71385cc8c9..0000000000 --- a/deps/uv/c-ares/inet_ntop.c +++ /dev/null @@ -1,232 +0,0 @@ - -/* Copyright (c) 1996 by Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE - * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS - * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - */ - -#include "ares_setup.h" - -#ifdef HAVE_SYS_SOCKET_H -# include -#endif -#ifdef HAVE_NETINET_IN_H -# include -#endif -#ifdef HAVE_ARPA_INET_H -# include -#endif -#ifdef HAVE_ARPA_NAMESER_H -# include -#else -# include "nameser.h" -#endif -#ifdef HAVE_ARPA_NAMESER_COMPAT_H -# include -#endif - -#include -#include -#include -#include -#include - -#include "ares.h" -#include "ares_ipv6.h" -#include "inet_ntop.h" - - -#ifndef HAVE_INET_NTOP - -#ifdef SPRINTF_CHAR -# define SPRINTF(x) strlen(sprintf/**/x) -#else -# define SPRINTF(x) ((size_t)sprintf x) -#endif - -/* - * WARNING: Don't even consider trying to compile this on a system where - * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. - */ - -static const char *inet_ntop4(const unsigned char *src, char *dst, size_t size); -static const char *inet_ntop6(const unsigned char *src, char *dst, size_t size); - -/* char * - * inet_ntop(af, src, dst, size) - * convert a network format address to presentation format. - * return: - * pointer to presentation format address (`dst'), or NULL (see errno). - * note: - * On Windows we store the error in the thread errno, not - * in the winsock error code. This is to avoid loosing the - * actual last winsock error. So use macro ERRNO to fetch the - * errno this funtion sets when returning NULL, not SOCKERRNO. - * author: - * Paul Vixie, 1996. - */ -const char * -ares_inet_ntop(int af, const void *src, char *dst, size_t size) -{ - switch (af) - { - case AF_INET: - return (inet_ntop4(src, dst, size)); - case AF_INET6: - return (inet_ntop6(src, dst, size)); - default: - SET_ERRNO(EAFNOSUPPORT); - return (NULL); - } - /* NOTREACHED */ -} - -/* const char * - * inet_ntop4(src, dst, size) - * format an IPv4 address, more or less like inet_ntoa() - * return: - * `dst' (as a const) - * notes: - * (1) uses no statics - * (2) takes a unsigned char* not an in_addr as input - * author: - * Paul Vixie, 1996. - */ -static const char * -inet_ntop4(const unsigned char *src, char *dst, size_t size) -{ - static const char fmt[] = "%u.%u.%u.%u"; - char tmp[sizeof "255.255.255.255"]; - - if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size) - { - SET_ERRNO(ENOSPC); - return (NULL); - } - strcpy(dst, tmp); - return (dst); -} - -/* const char * - * inet_ntop6(src, dst, size) - * convert IPv6 binary address into presentation (printable) format - * author: - * Paul Vixie, 1996. - */ -static const char * -inet_ntop6(const unsigned char *src, char *dst, size_t size) -{ - /* - * Note that int32_t and int16_t need only be "at least" large enough - * to contain a value of the specified size. On some systems, like - * Crays, there is no such thing as an integer variable with 16 bits. - * Keep this in mind if you think this function should have been coded - * to use pointer overlays. All the world's not a VAX. - */ - char tmp[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; - char *tp; - struct { - long base; - long len; - } best, cur; - unsigned long words[NS_IN6ADDRSZ / NS_INT16SZ]; - int i; - - /* - * Preprocess: - * Copy the input (bytewise) array into a wordwise array. - * Find the longest run of 0x00's in src[] for :: shorthanding. - */ - memset(words, '\0', sizeof(words)); - for (i = 0; i < NS_IN6ADDRSZ; i++) - words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3)); - - best.base = -1; - cur.base = -1; - best.len = 0; - cur.len = 0; - - for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) - { - if (words[i] == 0) - { - if (cur.base == -1) - cur.base = i, cur.len = 1; - else - cur.len++; - } - else - { - if (cur.base != -1) - { - if (best.base == -1 || cur.len > best.len) - best = cur; - cur.base = -1; - } - } - } - if (cur.base != -1) - { - if (best.base == -1 || cur.len > best.len) - best = cur; - } - if (best.base != -1 && best.len < 2) - best.base = -1; - - /* - * Format the result. - */ - tp = tmp; - for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) - { - /* Are we inside the best run of 0x00's? */ - if (best.base != -1 && i >= best.base && - i < (best.base + best.len)) - { - if (i == best.base) - *tp++ = ':'; - continue; - } - /* Are we following an initial run of 0x00s or any real hex? */ - if (i != 0) - *tp++ = ':'; - /* Is this address an encapsulated IPv4? */ - if (i == 6 && best.base == 0 && - (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) - { - if (!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp))) - return (NULL); - tp += strlen(tp); - break; - } - tp += SPRINTF((tp, "%lx", words[i])); - } - - /* Was it a trailing run of 0x00's? */ - if (best.base != -1 && (best.base + best.len) == (NS_IN6ADDRSZ / NS_INT16SZ)) - *tp++ = ':'; - *tp++ = '\0'; - - /* - * Check for overflow, copy, and we're done. - */ - if ((size_t)(tp - tmp) > size) - { - SET_ERRNO(ENOSPC); - return (NULL); - } - strcpy(dst, tmp); - return (dst); -} -#endif - diff --git a/deps/uv/c-ares/inet_ntop.h b/deps/uv/c-ares/inet_ntop.h deleted file mode 100644 index c583488f75..0000000000 --- a/deps/uv/c-ares/inet_ntop.h +++ /dev/null @@ -1,26 +0,0 @@ -#ifndef __ARES_INET_NTOP_H -#define __ARES_INET_NTOP_H - - -/* Copyright (C) 2005 by Dominick Meglio - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -#ifdef HAVE_INET_NTOP -#define ares_inet_ntop(w,x,y,z) inet_ntop(w,x,y,z) -#else -const char *ares_inet_ntop(int af, const void *src, char *dst, size_t size); -#endif - -#endif /* __ARES_INET_NTOP_H */ diff --git a/deps/uv/c-ares/nameser.h b/deps/uv/c-ares/nameser.h deleted file mode 100644 index b5be424cf7..0000000000 --- a/deps/uv/c-ares/nameser.h +++ /dev/null @@ -1,193 +0,0 @@ - -#ifndef ARES_NAMESER_H -#define ARES_NAMESER_H - -/* header file provided by liren@vivisimo.com */ - -#ifndef HAVE_ARPA_NAMESER_H - -#define NS_PACKETSZ 512 /* maximum packet size */ -#define NS_MAXDNAME 256 /* maximum domain name */ -#define NS_MAXCDNAME 255 /* maximum compressed domain name */ -#define NS_MAXLABEL 63 -#define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ -#define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ -#define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ -#define NS_INT16SZ 2 -#define NS_INADDRSZ 4 -#define NS_IN6ADDRSZ 16 -#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ -#define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ - -typedef enum __ns_class { - ns_c_invalid = 0, /* Cookie. */ - ns_c_in = 1, /* Internet. */ - ns_c_2 = 2, /* unallocated/unsupported. */ - ns_c_chaos = 3, /* MIT Chaos-net. */ - ns_c_hs = 4, /* MIT Hesiod. */ - /* Query class values which do not appear in resource records */ - ns_c_none = 254, /* for prereq. sections in update requests */ - ns_c_any = 255, /* Wildcard match. */ - ns_c_max = 65536 -} ns_class; - -typedef enum __ns_type { - ns_t_invalid = 0, /* Cookie. */ - ns_t_a = 1, /* Host address. */ - ns_t_ns = 2, /* Authoritative server. */ - ns_t_md = 3, /* Mail destination. */ - ns_t_mf = 4, /* Mail forwarder. */ - ns_t_cname = 5, /* Canonical name. */ - ns_t_soa = 6, /* Start of authority zone. */ - ns_t_mb = 7, /* Mailbox domain name. */ - ns_t_mg = 8, /* Mail group member. */ - ns_t_mr = 9, /* Mail rename name. */ - ns_t_null = 10, /* Null resource record. */ - ns_t_wks = 11, /* Well known service. */ - ns_t_ptr = 12, /* Domain name pointer. */ - ns_t_hinfo = 13, /* Host information. */ - ns_t_minfo = 14, /* Mailbox information. */ - ns_t_mx = 15, /* Mail routing information. */ - ns_t_txt = 16, /* Text strings. */ - ns_t_rp = 17, /* Responsible person. */ - ns_t_afsdb = 18, /* AFS cell database. */ - ns_t_x25 = 19, /* X_25 calling address. */ - ns_t_isdn = 20, /* ISDN calling address. */ - ns_t_rt = 21, /* Router. */ - ns_t_nsap = 22, /* NSAP address. */ - ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ - ns_t_sig = 24, /* Security signature. */ - ns_t_key = 25, /* Security key. */ - ns_t_px = 26, /* X.400 mail mapping. */ - ns_t_gpos = 27, /* Geographical position (withdrawn). */ - ns_t_aaaa = 28, /* Ip6 Address. */ - ns_t_loc = 29, /* Location Information. */ - ns_t_nxt = 30, /* Next domain (security). */ - ns_t_eid = 31, /* Endpoint identifier. */ - ns_t_nimloc = 32, /* Nimrod Locator. */ - ns_t_srv = 33, /* Server Selection. */ - ns_t_atma = 34, /* ATM Address */ - ns_t_naptr = 35, /* Naming Authority PoinTeR */ - ns_t_kx = 36, /* Key Exchange */ - ns_t_cert = 37, /* Certification record */ - ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ - ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ - ns_t_sink = 40, /* Kitchen sink (experimentatl) */ - ns_t_opt = 41, /* EDNS0 option (meta-RR) */ - ns_t_apl = 42, /* Address prefix list (RFC3123) */ - ns_t_tkey = 249, /* Transaction key */ - ns_t_tsig = 250, /* Transaction signature. */ - ns_t_ixfr = 251, /* Incremental zone transfer. */ - ns_t_axfr = 252, /* Transfer zone of authority. */ - ns_t_mailb = 253, /* Transfer mailbox records. */ - ns_t_maila = 254, /* Transfer mail agent records. */ - ns_t_any = 255, /* Wildcard match. */ - ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ - ns_t_max = 65536 -} ns_type; - -typedef enum __ns_opcode { - ns_o_query = 0, /* Standard query. */ - ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ - ns_o_status = 2, /* Name server status query (unsupported). */ - /* Opcode 3 is undefined/reserved. */ - ns_o_notify = 4, /* Zone change notification. */ - ns_o_update = 5, /* Zone update message. */ - ns_o_max = 6 -} ns_opcode; - -typedef enum __ns_rcode { - ns_r_noerror = 0, /* No error occurred. */ - ns_r_formerr = 1, /* Format error. */ - ns_r_servfail = 2, /* Server failure. */ - ns_r_nxdomain = 3, /* Name error. */ - ns_r_notimpl = 4, /* Unimplemented. */ - ns_r_refused = 5, /* Operation refused. */ - /* these are for BIND_UPDATE */ - ns_r_yxdomain = 6, /* Name exists */ - ns_r_yxrrset = 7, /* RRset exists */ - ns_r_nxrrset = 8, /* RRset does not exist */ - ns_r_notauth = 9, /* Not authoritative for zone */ - ns_r_notzone = 10, /* Zone of record different from zone section */ - ns_r_max = 11, - /* The following are TSIG extended errors */ - ns_r_badsig = 16, - ns_r_badkey = 17, - ns_r_badtime = 18 -} ns_rcode; - -#endif /* HAVE_ARPA_NAMESER_H */ - -#ifndef HAVE_ARPA_NAMESER_COMPAT_H - -#define PACKETSZ NS_PACKETSZ -#define MAXDNAME NS_MAXDNAME -#define MAXCDNAME NS_MAXCDNAME -#define MAXLABEL NS_MAXLABEL -#define HFIXEDSZ NS_HFIXEDSZ -#define QFIXEDSZ NS_QFIXEDSZ -#define RRFIXEDSZ NS_RRFIXEDSZ -#define INDIR_MASK NS_CMPRSFLGS -#define NAMESERVER_PORT NS_DEFAULTPORT - -#define QUERY ns_o_query - -#define SERVFAIL ns_r_servfail -#define NOTIMP ns_r_notimpl -#define REFUSED ns_r_refused -#undef NOERROR /* it seems this is already defined in winerror.h */ -#define NOERROR ns_r_noerror -#define FORMERR ns_r_formerr -#define NXDOMAIN ns_r_nxdomain - -#define C_IN ns_c_in -#define C_CHAOS ns_c_chaos -#define C_HS ns_c_hs -#define C_NONE ns_c_none -#define C_ANY ns_c_any - -#define T_A ns_t_a -#define T_NS ns_t_ns -#define T_MD ns_t_md -#define T_MF ns_t_mf -#define T_CNAME ns_t_cname -#define T_SOA ns_t_soa -#define T_MB ns_t_mb -#define T_MG ns_t_mg -#define T_MR ns_t_mr -#define T_NULL ns_t_null -#define T_WKS ns_t_wks -#define T_PTR ns_t_ptr -#define T_HINFO ns_t_hinfo -#define T_MINFO ns_t_minfo -#define T_MX ns_t_mx -#define T_TXT ns_t_txt -#define T_RP ns_t_rp -#define T_AFSDB ns_t_afsdb -#define T_X25 ns_t_x25 -#define T_ISDN ns_t_isdn -#define T_RT ns_t_rt -#define T_NSAP ns_t_nsap -#define T_NSAP_PTR ns_t_nsap_ptr -#define T_SIG ns_t_sig -#define T_KEY ns_t_key -#define T_PX ns_t_px -#define T_GPOS ns_t_gpos -#define T_AAAA ns_t_aaaa -#define T_LOC ns_t_loc -#define T_NXT ns_t_nxt -#define T_EID ns_t_eid -#define T_NIMLOC ns_t_nimloc -#define T_SRV ns_t_srv -#define T_ATMA ns_t_atma -#define T_NAPTR ns_t_naptr -#define T_TSIG ns_t_tsig -#define T_IXFR ns_t_ixfr -#define T_AXFR ns_t_axfr -#define T_MAILB ns_t_mailb -#define T_MAILA ns_t_maila -#define T_ANY ns_t_any - -#endif /* HAVE_ARPA_NAMESER_COMPAT_H */ - -#endif /* ARES_NAMESER_H */ diff --git a/deps/uv/c-ares/setup_once.h b/deps/uv/c-ares/setup_once.h deleted file mode 100644 index 0c7c811194..0000000000 --- a/deps/uv/c-ares/setup_once.h +++ /dev/null @@ -1,488 +0,0 @@ -#ifndef __SETUP_ONCE_H -#define __SETUP_ONCE_H - - -/* Copyright (C) 2004 - 2010 by Daniel Stenberg et al - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in advertising or - * publicity pertaining to distribution of the software without specific, - * written prior permission. M.I.T. makes no representations about the - * suitability of this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - - -/******************************************************************** - * NOTICE * - * ======== * - * * - * Content of header files lib/setup_once.h and ares/setup_once.h * - * must be kept in sync. Modify the other one if you change this. * - * * - ********************************************************************/ - - -/* - * Inclusion of common header files. - */ - -#include -#include -#include -#include -#include -#include - -#ifdef HAVE_SYS_TYPES_H -#include -#endif - -#ifdef NEED_MALLOC_H -#include -#endif - -#ifdef NEED_MEMORY_H -#include -#endif - -#ifdef HAVE_SYS_STAT_H -#include -#endif - -#ifdef HAVE_SYS_TIME_H -#include -#ifdef TIME_WITH_SYS_TIME -#include -#endif -#else -#ifdef HAVE_TIME_H -#include -#endif -#endif - -#ifdef WIN32 -#include -#include -#endif - -#ifdef HAVE_STDBOOL_H -#include -#endif - - -/* - * Definition of timeval struct for platforms that don't have it. - */ - -#ifndef HAVE_STRUCT_TIMEVAL -struct timeval { - long tv_sec; - long tv_usec; -}; -#endif - - -/* - * If we have the MSG_NOSIGNAL define, make sure we use - * it as the fourth argument of function send() - */ - -#ifdef HAVE_MSG_NOSIGNAL -#define SEND_4TH_ARG MSG_NOSIGNAL -#else -#define SEND_4TH_ARG 0 -#endif - - -#if defined(__minix) -/* Minix doesn't support recv on TCP sockets */ -#define sread(x,y,z) (ssize_t)read((RECV_TYPE_ARG1)(x), \ - (RECV_TYPE_ARG2)(y), \ - (RECV_TYPE_ARG3)(z)) - -#elif defined(HAVE_RECV) -/* - * The definitions for the return type and arguments types - * of functions recv() and send() belong and come from the - * configuration file. Do not define them in any other place. - * - * HAVE_RECV is defined if you have a function named recv() - * which is used to read incoming data from sockets. If your - * function has another name then don't define HAVE_RECV. - * - * If HAVE_RECV is defined then RECV_TYPE_ARG1, RECV_TYPE_ARG2, - * RECV_TYPE_ARG3, RECV_TYPE_ARG4 and RECV_TYPE_RETV must also - * be defined. - * - * HAVE_SEND is defined if you have a function named send() - * which is used to write outgoing data on a connected socket. - * If yours has another name then don't define HAVE_SEND. - * - * If HAVE_SEND is defined then SEND_TYPE_ARG1, SEND_QUAL_ARG2, - * SEND_TYPE_ARG2, SEND_TYPE_ARG3, SEND_TYPE_ARG4 and - * SEND_TYPE_RETV must also be defined. - */ - -#if !defined(RECV_TYPE_ARG1) || \ - !defined(RECV_TYPE_ARG2) || \ - !defined(RECV_TYPE_ARG3) || \ - !defined(RECV_TYPE_ARG4) || \ - !defined(RECV_TYPE_RETV) - /* */ - Error Missing_definition_of_return_and_arguments_types_of_recv - /* */ -#else -#define sread(x,y,z) (ssize_t)recv((RECV_TYPE_ARG1)(x), \ - (RECV_TYPE_ARG2)(y), \ - (RECV_TYPE_ARG3)(z), \ - (RECV_TYPE_ARG4)(0)) -#endif -#else /* HAVE_RECV */ -#ifndef sread - /* */ - Error Missing_definition_of_macro_sread - /* */ -#endif -#endif /* HAVE_RECV */ - - -#if defined(__minix) -/* Minix doesn't support send on TCP sockets */ -#define swrite(x,y,z) (ssize_t)write((SEND_TYPE_ARG1)(x), \ - (SEND_TYPE_ARG2)(y), \ - (SEND_TYPE_ARG3)(z)) - -#elif defined(HAVE_SEND) -#if !defined(SEND_TYPE_ARG1) || \ - !defined(SEND_QUAL_ARG2) || \ - !defined(SEND_TYPE_ARG2) || \ - !defined(SEND_TYPE_ARG3) || \ - !defined(SEND_TYPE_ARG4) || \ - !defined(SEND_TYPE_RETV) - /* */ - Error Missing_definition_of_return_and_arguments_types_of_send - /* */ -#else -#define swrite(x,y,z) (ssize_t)send((SEND_TYPE_ARG1)(x), \ - (SEND_TYPE_ARG2)(y), \ - (SEND_TYPE_ARG3)(z), \ - (SEND_TYPE_ARG4)(SEND_4TH_ARG)) -#endif -#else /* HAVE_SEND */ -#ifndef swrite - /* */ - Error Missing_definition_of_macro_swrite - /* */ -#endif -#endif /* HAVE_SEND */ - - -#if 0 -#if defined(HAVE_RECVFROM) -/* - * Currently recvfrom is only used on udp sockets. - */ -#if !defined(RECVFROM_TYPE_ARG1) || \ - !defined(RECVFROM_TYPE_ARG2) || \ - !defined(RECVFROM_TYPE_ARG3) || \ - !defined(RECVFROM_TYPE_ARG4) || \ - !defined(RECVFROM_TYPE_ARG5) || \ - !defined(RECVFROM_TYPE_ARG6) || \ - !defined(RECVFROM_TYPE_RETV) - /* */ - Error Missing_definition_of_return_and_arguments_types_of_recvfrom - /* */ -#else -#define sreadfrom(s,b,bl,f,fl) (ssize_t)recvfrom((RECVFROM_TYPE_ARG1) (s), \ - (RECVFROM_TYPE_ARG2 *)(b), \ - (RECVFROM_TYPE_ARG3) (bl), \ - (RECVFROM_TYPE_ARG4) (0), \ - (RECVFROM_TYPE_ARG5 *)(f), \ - (RECVFROM_TYPE_ARG6 *)(fl)) -#endif -#else /* HAVE_RECVFROM */ -#ifndef sreadfrom - /* */ - Error Missing_definition_of_macro_sreadfrom - /* */ -#endif -#endif /* HAVE_RECVFROM */ - - -#ifdef RECVFROM_TYPE_ARG6_IS_VOID -# define RECVFROM_ARG6_T int -#else -# define RECVFROM_ARG6_T RECVFROM_TYPE_ARG6 -#endif -#endif /* if 0 */ - - -/* - * Function-like macro definition used to close a socket. - */ - -#if defined(HAVE_CLOSESOCKET) -# define sclose(x) closesocket((x)) -#elif defined(HAVE_CLOSESOCKET_CAMEL) -# define sclose(x) CloseSocket((x)) -#else -# define sclose(x) close((x)) -#endif - - -/* - * Uppercase macro versions of ANSI/ISO is*() functions/macros which - * avoid negative number inputs with argument byte codes > 127. - */ - -#define ISSPACE(x) (isspace((int) ((unsigned char)x))) -#define ISDIGIT(x) (isdigit((int) ((unsigned char)x))) -#define ISALNUM(x) (isalnum((int) ((unsigned char)x))) -#define ISXDIGIT(x) (isxdigit((int) ((unsigned char)x))) -#define ISGRAPH(x) (isgraph((int) ((unsigned char)x))) -#define ISALPHA(x) (isalpha((int) ((unsigned char)x))) -#define ISPRINT(x) (isprint((int) ((unsigned char)x))) -#define ISUPPER(x) (isupper((int) ((unsigned char)x))) -#define ISLOWER(x) (islower((int) ((unsigned char)x))) - -#define ISBLANK(x) (int)((((unsigned char)x) == ' ') || \ - (((unsigned char)x) == '\t')) - -#define TOLOWER(x) (tolower((int) ((unsigned char)x))) - - -/* - * 'bool' exists on platforms with , i.e. C99 platforms. - * On non-C99 platforms there's no bool, so define an enum for that. - * On C99 platforms 'false' and 'true' also exist. Enum uses a - * global namespace though, so use bool_false and bool_true. - */ - -#ifndef HAVE_BOOL_T - typedef enum { - bool_false = 0, - bool_true = 1 - } bool; - -/* - * Use a define to let 'true' and 'false' use those enums. There - * are currently no use of true and false in libcurl proper, but - * there are some in the examples. This will cater for any later - * code happening to use true and false. - */ -# define false bool_false -# define true bool_true -# define HAVE_BOOL_T -#endif - - -/* - * Redefine TRUE and FALSE too, to catch current use. With this - * change, 'bool found = 1' will give a warning on MIPSPro, but - * 'bool found = TRUE' will not. Change tested on IRIX/MIPSPro, - * AIX 5.1/Xlc, Tru64 5.1/cc, w/make test too. - */ - -#ifndef TRUE -#define TRUE true -#endif -#ifndef FALSE -#define FALSE false -#endif - - -/* - * Typedef to 'int' if sig_atomic_t is not an available 'typedefed' type. - */ - -#ifndef HAVE_SIG_ATOMIC_T -typedef int sig_atomic_t; -#define HAVE_SIG_ATOMIC_T -#endif - - -/* - * Convenience SIG_ATOMIC_T definition - */ - -#ifdef HAVE_SIG_ATOMIC_T_VOLATILE -#define SIG_ATOMIC_T static sig_atomic_t -#else -#define SIG_ATOMIC_T static volatile sig_atomic_t -#endif - - -/* - * Default return type for signal handlers. - */ - -#ifndef RETSIGTYPE -#define RETSIGTYPE void -#endif - - -/* - * Macro used to include code only in debug builds. - */ - -#ifdef DEBUGBUILD -#define DEBUGF(x) x -#else -#define DEBUGF(x) do { } while (0) -#endif - - -/* - * Macro used to include assertion code only in debug builds. - */ - -#if defined(DEBUGBUILD) && defined(HAVE_ASSERT_H) -#define DEBUGASSERT(x) assert(x) -#else -#define DEBUGASSERT(x) do { } while (0) -#endif - - -/* - * Macro SOCKERRNO / SET_SOCKERRNO() returns / sets the *socket-related* errno - * (or equivalent) on this platform to hide platform details to code using it. - */ - -#ifdef USE_WINSOCK -#define SOCKERRNO ((int)WSAGetLastError()) -#define SET_SOCKERRNO(x) (WSASetLastError((int)(x))) -#else -#define SOCKERRNO (errno) -#define SET_SOCKERRNO(x) (errno = (x)) -#endif - - -/* - * Macro ERRNO / SET_ERRNO() returns / sets the NOT *socket-related* errno - * (or equivalent) on this platform to hide platform details to code using it. - */ - -#ifdef WIN32 -#define ERRNO ((int)GetLastError()) -#define SET_ERRNO(x) (SetLastError((DWORD)(x))) -#else -#define ERRNO (errno) -#define SET_ERRNO(x) (errno = (x)) -#endif - - -/* - * Portable error number symbolic names defined to Winsock error codes. - */ - -#ifdef USE_WINSOCK -#undef EBADF /* override definition in errno.h */ -#define EBADF WSAEBADF -#undef EINTR /* override definition in errno.h */ -#define EINTR WSAEINTR -#undef EINVAL /* override definition in errno.h */ -#define EINVAL WSAEINVAL -#undef EWOULDBLOCK /* override definition in errno.h */ -#define EWOULDBLOCK WSAEWOULDBLOCK -#undef EINPROGRESS /* override definition in errno.h */ -#define EINPROGRESS WSAEINPROGRESS -#undef EALREADY /* override definition in errno.h */ -#define EALREADY WSAEALREADY -#undef ENOTSOCK /* override definition in errno.h */ -#define ENOTSOCK WSAENOTSOCK -#undef EDESTADDRREQ /* override definition in errno.h */ -#define EDESTADDRREQ WSAEDESTADDRREQ -#undef EMSGSIZE /* override definition in errno.h */ -#define EMSGSIZE WSAEMSGSIZE -#undef EPROTOTYPE /* override definition in errno.h */ -#define EPROTOTYPE WSAEPROTOTYPE -#undef ENOPROTOOPT /* override definition in errno.h */ -#define ENOPROTOOPT WSAENOPROTOOPT -#undef EPROTONOSUPPORT /* override definition in errno.h */ -#define EPROTONOSUPPORT WSAEPROTONOSUPPORT -#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT -#undef EOPNOTSUPP /* override definition in errno.h */ -#define EOPNOTSUPP WSAEOPNOTSUPP -#define EPFNOSUPPORT WSAEPFNOSUPPORT -#undef EAFNOSUPPORT /* override definition in errno.h */ -#define EAFNOSUPPORT WSAEAFNOSUPPORT -#undef EADDRINUSE /* override definition in errno.h */ -#define EADDRINUSE WSAEADDRINUSE -#undef EADDRNOTAVAIL /* override definition in errno.h */ -#define EADDRNOTAVAIL WSAEADDRNOTAVAIL -#undef ENETDOWN /* override definition in errno.h */ -#define ENETDOWN WSAENETDOWN -#undef ENETUNREACH /* override definition in errno.h */ -#define ENETUNREACH WSAENETUNREACH -#undef ENETRESET /* override definition in errno.h */ -#define ENETRESET WSAENETRESET -#undef ECONNABORTED /* override definition in errno.h */ -#define ECONNABORTED WSAECONNABORTED -#undef ECONNRESET /* override definition in errno.h */ -#define ECONNRESET WSAECONNRESET -#undef ENOBUFS /* override definition in errno.h */ -#define ENOBUFS WSAENOBUFS -#undef EISCONN /* override definition in errno.h */ -#define EISCONN WSAEISCONN -#undef ENOTCONN /* override definition in errno.h */ -#define ENOTCONN WSAENOTCONN -#define ESHUTDOWN WSAESHUTDOWN -#define ETOOMANYREFS WSAETOOMANYREFS -#undef ETIMEDOUT /* override definition in errno.h */ -#define ETIMEDOUT WSAETIMEDOUT -#undef ECONNREFUSED /* override definition in errno.h */ -#define ECONNREFUSED WSAECONNREFUSED -#undef ELOOP /* override definition in errno.h */ -#define ELOOP WSAELOOP -#ifndef ENAMETOOLONG /* possible previous definition in errno.h */ -#define ENAMETOOLONG WSAENAMETOOLONG -#endif -#define EHOSTDOWN WSAEHOSTDOWN -#undef EHOSTUNREACH /* override definition in errno.h */ -#define EHOSTUNREACH WSAEHOSTUNREACH -#ifndef ENOTEMPTY /* possible previous definition in errno.h */ -#define ENOTEMPTY WSAENOTEMPTY -#endif -#define EPROCLIM WSAEPROCLIM -#define EUSERS WSAEUSERS -#define EDQUOT WSAEDQUOT -#define ESTALE WSAESTALE -#define EREMOTE WSAEREMOTE -#endif - - -/* - * Actually use __32_getpwuid() on 64-bit VMS builds for getpwuid() - */ - -#if defined(__VMS) && \ - defined(__INITIAL_POINTER_SIZE) && (__INITIAL_POINTER_SIZE == 64) -#define getpwuid __32_getpwuid -#endif - - -/* - * Macro argv_item_t hides platform details to code using it. - */ - -#ifdef __VMS -#define argv_item_t __char_ptr32 -#else -#define argv_item_t char * -#endif - - -/* - * We use this ZERO_NULL to avoid picky compiler warnings, - * when assigning a NULL pointer to a function pointer var. - */ - -#define ZERO_NULL 0 - - -#endif /* __SETUP_ONCE_H */ - diff --git a/deps/uv/c-ares/windows_port.c b/deps/uv/c-ares/windows_port.c deleted file mode 100644 index 03acd1c1e2..0000000000 --- a/deps/uv/c-ares/windows_port.c +++ /dev/null @@ -1,22 +0,0 @@ -#include "ares_setup.h" - - -/* only do the following on windows - */ -#if (defined(WIN32) || defined(WATT32)) && !defined(MSDOS) - -#ifdef __WATCOMC__ -/* - * Watcom needs a DllMain() in order to initialise the clib startup code. - */ -BOOL -WINAPI DllMain (HINSTANCE hnd, DWORD reason, LPVOID reserved) -{ - (void) hnd; - (void) reason; - (void) reserved; - return (TRUE); -} -#endif - -#endif /* WIN32 builds only */ diff --git a/deps/uv/config-mingw.mk b/deps/uv/config-mingw.mk index f1f1ce9e45..be8abca1cb 100644 --- a/deps/uv/config-mingw.mk +++ b/deps/uv/config-mingw.mk @@ -20,42 +20,44 @@ # Use make -f Makefile.gcc PREFIX=i686-w64-mingw32- # for cross compilation -CC = $(PREFIX)gcc -AR = $(PREFIX)ar +CC ?= $(PREFIX)gcc +AR ?= $(PREFIX)ar E=.exe -CFLAGS=-g --std=gnu89 -D_WIN32_WINNT=0x0501 -Ic-ares/config_win32 +CFLAGS=$(CPPFLAGS) -g --std=gnu89 -D_WIN32_WINNT=0x0501 -Isrc/ares/config_win32 LINKFLAGS=-lm -CARES_OBJS += c-ares/windows_port.o +CARES_OBJS += src/ares/windows_port.o RUNNER_CFLAGS=$(CFLAGS) -D_GNU_SOURCE # Need _GNU_SOURCE for strdup? RUNNER_LINKFLAGS=$(LINKFLAGS) RUNNER_LIBS=-lws2_32 RUNNER_SRC=test/runner-win.c -uv.a: uv-win.o uv-common.o uv-eio.o eio/eio.o $(CARES_OBJS) - $(AR) rcs uv.a uv-win.o uv-common.o uv-eio.o eio/eio.o $(CARES_OBJS) +uv.a: src/uv-win.o src/uv-common.o src/uv-eio.o src/eio/eio.o $(CARES_OBJS) + $(AR) rcs uv.a src/uv-win.o src/uv-common.o src/uv-eio.o src/eio/eio.o $(CARES_OBJS) -uv-win.o: uv-win.c uv.h uv-win.h - $(CC) $(CFLAGS) -c uv-win.c -o uv-win.o +src/uv-win.o: src/uv-win.c include/uv.h include/uv-win.h + $(CC) $(CFLAGS) -c src/uv-win.c -o src/uv-win.o -uv-common.o: uv-common.c uv.h uv-win.h - $(CC) $(CFLAGS) -c uv-common.c -o uv-common.o +src/uv-common.o: src/uv-common.c include/uv.h include/uv-win.h + $(CC) $(CFLAGS) -c src/uv-common.c -o src/uv-common.o EIO_CPPFLAGS += $(CPPFLAGS) EIO_CPPFLAGS += -DEIO_CONFIG_H=\"$(EIO_CONFIG)\" EIO_CPPFLAGS += -DEIO_STACKSIZE=65536 EIO_CPPFLAGS += -D_GNU_SOURCE -eio/eio.o: eio/eio.c - $(CC) $(EIO_CPPFLAGS) $(CFLAGS) -c eio/eio.c -o eio/eio.o +src/eio/eio.o: src/eio/eio.c + $(CC) $(EIO_CPPFLAGS) $(CFLAGS) -c src/eio/eio.c -o src/eio/eio.o -uv-eio.o: uv-eio.c - $(CC) $(CPPFLAGS) -Ieio/ $(CFLAGS) -c uv-eio.c -o uv-eio.o +src/uv-eio.o: src/uv-eio.c + $(CC) $(CPPFLAGS) -Isrc/eio/ $(CFLAGS) -c src/uv-eio.c -o src/uv-eio.o clean-platform: - -rm -f c-ares/*.o + -rm -f src/ares/*.o + -rm -f src/eio/*.o distclean-platform: - -rm -f c-ares/*.o + -rm -f src/ares/*.o + -rm -f src/eio/*.o diff --git a/deps/uv/config-unix.mk b/deps/uv/config-unix.mk index 4e503b3e54..862af2d47b 100644 --- a/deps/uv/config-unix.mk +++ b/deps/uv/config-unix.mk @@ -18,10 +18,11 @@ # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS # IN THE SOFTWARE. -CC = $(PREFIX)gcc -AR = $(PREFIX)ar +CC ?= $(PREFIX)gcc +AR ?= $(PREFIX)ar E= CFLAGS=--std=gnu89 -g +CPPFLAGS += -Isrc/ev LINKFLAGS=-lm CPPFLAGS += -D_LARGEFILE_SOURCE @@ -30,7 +31,7 @@ CPPFLAGS += -D_FILE_OFFSET_BITS=64 ifeq (SunOS,$(uname_S)) EV_CONFIG=config_sunos.h EIO_CONFIG=config_sunos.h -CPPFLAGS += -Ic-ares/config_sunos +CPPFLAGS += -Isrc/ares/config_sunos LINKFLAGS+=-lsocket -lnsl UV_OS_FILE=uv-sunos.c endif @@ -38,7 +39,7 @@ endif ifeq (Darwin,$(uname_S)) EV_CONFIG=config_darwin.h EIO_CONFIG=config_darwin.h -CPPFLAGS += -Ic-ares/config_darwin +CPPFLAGS += -Isrc/ares/config_darwin LINKFLAGS+=-framework CoreServices UV_OS_FILE=uv-darwin.c endif @@ -46,7 +47,7 @@ endif ifeq (Linux,$(uname_S)) EV_CONFIG=config_linux.h EIO_CONFIG=config_linux.h -CPPFLAGS += -Ic-ares/config_linux +CPPFLAGS += -Isrc/ares/config_linux LINKFLAGS+=-lrt UV_OS_FILE=uv-linux.c endif @@ -54,7 +55,7 @@ endif ifeq (FreeBSD,$(uname_S)) EV_CONFIG=config_freebsd.h EIO_CONFIG=config_freebsd.h -CPPFLAGS += -Ic-ares/config_freebsd +CPPFLAGS += -Isrc/ares/config_freebsd LINKFLAGS+= UV_OS_FILE=uv-freebsd.c endif @@ -62,7 +63,7 @@ endif ifneq (,$(findstring CYGWIN,$(uname_S))) EV_CONFIG=config_cygwin.h EIO_CONFIG=config_cygwin.h -CPPFLAGS += -Ic-ares/config_cygwin +CPPFLAGS += -Isrc/ares/config_cygwin LINKFLAGS+= UV_OS_FILE=uv-cygwin.c endif @@ -74,21 +75,21 @@ RUNNER_LINKFLAGS=$(LINKFLAGS) -pthread RUNNER_LIBS= RUNNER_SRC=test/runner-unix.c -uv.a: uv-unix.o uv-common.o uv-platform.o ev/ev.o uv-eio.o eio/eio.o $(CARES_OBJS) - $(AR) rcs uv.a uv-unix.o uv-platform.o uv-common.o uv-eio.o ev/ev.o \ - eio/eio.o $(CARES_OBJS) +uv.a: src/uv-unix.o src/uv-common.o src/uv-platform.o src/ev/ev.o src/uv-eio.o src/eio/eio.o $(CARES_OBJS) + $(AR) rcs uv.a src/uv-unix.o src/uv-platform.o src/uv-common.o src/uv-eio.o src/ev/ev.o \ + src/eio/eio.o $(CARES_OBJS) -uv-platform.o: $(UV_OS_FILE) uv.h uv-unix.h - $(CC) $(CPPFLAGS) $(CFLAGS) -c $(UV_OS_FILE) -o uv-platform.o +src/uv-platform.o: src/$(UV_OS_FILE) include/uv.h include/uv-unix.h + $(CC) $(CPPFLAGS) $(CFLAGS) -c src/$(UV_OS_FILE) -o src/uv-platform.o -uv-unix.o: uv-unix.c uv.h uv-unix.h - $(CC) $(CPPFLAGS) -Ieio $(CFLAGS) -c uv-unix.c -o uv-unix.o +src/uv-unix.o: src/uv-unix.c include/uv.h include/uv-unix.h + $(CC) $(CPPFLAGS) -Ieio $(CFLAGS) -c src/uv-unix.c -o src/uv-unix.o -uv-common.o: uv-common.c uv.h uv-unix.h - $(CC) $(CPPFLAGS) $(CFLAGS) -c uv-common.c -o uv-common.o +src/uv-common.o: src/uv-common.c include/uv.h include/uv-unix.h + $(CC) $(CPPFLAGS) $(CFLAGS) -c src/uv-common.c -o src/uv-common.o -ev/ev.o: ev/ev.c - $(CC) $(CPPFLAGS) $(CFLAGS) -c ev/ev.c -o ev/ev.o -DEV_CONFIG_H=\"$(EV_CONFIG)\" +src/ev/ev.o: src/ev/ev.c + $(CC) $(CPPFLAGS) $(CFLAGS) -c src/ev/ev.c -o src/ev/ev.o -DEV_CONFIG_H=\"$(EV_CONFIG)\" EIO_CPPFLAGS += $(CPPFLAGS) @@ -96,21 +97,21 @@ EIO_CPPFLAGS += -DEIO_CONFIG_H=\"$(EIO_CONFIG)\" EIO_CPPFLAGS += -DEIO_STACKSIZE=65536 EIO_CPPFLAGS += -D_GNU_SOURCE -eio/eio.o: eio/eio.c - $(CC) $(EIO_CPPFLAGS) $(CFLAGS) -c eio/eio.c -o eio/eio.o +src/eio/eio.o: src/eio/eio.c + $(CC) $(EIO_CPPFLAGS) $(CFLAGS) -c src/eio/eio.c -o src/eio/eio.o -uv-eio.o: uv-eio.c - $(CC) $(CPPFLAGS) -Ieio/ $(CFLAGS) -c uv-eio.c -o uv-eio.o +src/uv-eio.o: src/uv-eio.c + $(CC) $(CPPFLAGS) -Isrc/eio/ $(CFLAGS) -c src/uv-eio.c -o src/uv-eio.o clean-platform: - -rm -f c-ares/*.o - -rm -f ev/*.o - -rm -f eio/*.o + -rm -f src/ares/*.o + -rm -f src/ev/*.o + -rm -f src/eio/*.o -rm -rf test/run-tests.dSYM run-benchmarks.dSYM distclean-platform: - -rm -f c-ares/*.o - -rm -f ev/*.o - -rm -f eio/*.o + -rm -f src/ares/*.o + -rm -f src/ev/*.o + -rm -f src/eio/*.o -rm -rf test/run-tests.dSYM run-benchmarks.dSYM diff --git a/deps/uv/desired-api.md b/deps/uv/desired-api.md deleted file mode 100644 index 9faa57591e..0000000000 --- a/deps/uv/desired-api.md +++ /dev/null @@ -1,159 +0,0 @@ -Warning: this is not actual API but desired API. - -# `uv_handle_t` - -This is the abstract base class of all types of handles. All handles have in -common: - -* When handles are initialized, the reference count to the event loop is - increased by one. - -* The user owns the `uv_handle_t` memory and is in charge of freeing it. - -* In order to free resources associated with a handle, one must `uv_close()` - and wait for the `uv_close_cb` callback. After the close callback has been - made, the user is allowed to the `uv_handle_t` object. - -* The `uv_close_cb` is always made directly off the event loop. That is, it - is not called from `uv_close()`. - - - -# `uv_tcp_server_t` - -A TCP server class that is a subclass of `uv_handle_t`. This can be bound to -an address and begin accepting new TCP sockets. - - int uv_bind4(uv_tcp_server_t* tcp_server, struct sockaddr_in* address); - int uv_bind6(uv_tcp_server_t* tcp_server, struct sockaddr_in6* address); - -Binds the TCP server to an address. The `address` can be created with -`uv_ip4_addr()`. Call this before `uv_listen()` - -Returns zero on success, -1 on failure. Errors in order of least-seriousness: - -* `UV_EADDRINUSE` There is already another socket bound to the specified - address. - -* `UV_EADDRNOTAVAIL` The `address` parameter is an IP address that is not - -* `UV_EINVAL` The server is already bound to an address. - -* `UV_EFAULT` Memory of `address` parameter is unintelligible. - - - int uv_listen(uv_tcp_server_t*, int backlog, uv_connection_cb cb); - -Begins listening for connections. The accept callback is level-triggered. - - - int uv_accept(uv_tcp_server_t* server, - uv_tcp_t* client); - -Accepts a connection. This should be called after the accept callback is -made. The `client` parameter should be uninitialized memory; `uv_accept` is -used instead of `uv_tcp_init` for server-side `uv_tcp_t` initialization. - -Return value 0 indicates success, -1 failure. Possible errors: - -* `UV_EAGAIN` There are no connections. Wait for the `uv_connection_cb` callback - to be called again. - -* `UV_EFAULT` The memory of either `server` is unintelligible. - - - -# `uv_stream_t` - -An abstract subclass of `uv_handle_t`. Streams represent something that -reads and/or writes data. Streams can be half or full-duplex. TCP sockets -are streams, files are streams with offsets. - - int uv_read_start(uv_stream_t* stream, - uv_alloc_cb alloc_cb, - uv_read_cb read_cb); - -Starts the stream reading continuously. The `alloc_cb` is used to allow the -user to implement various means of supplying the stream with buffers to -fill. The `read_cb` returns buffers to the user filled with data. - -Sometimes the buffers returned to the user do not contain data. This does -not indicate EOF as in other systems. EOF is made via the `uv_eof_cb` which -can be set like this `uv_set_eof_cb(stream, eof_cb);` - - - int uv_read_stop(uv_stream_t* stream); - -Stops reading from the stream. - - int uv_write_req_init(uv_write_req_t*, - uv_stream_t*, - uv_buf_t bufs[], - int butcnf); - -Initiates a write request on a stream. - - int uv_shutdown_req_init(uv_shutdown_req_t*, uv_stream_t*) - -Initiates a shutdown of outgoing data once the write queue drains. - - - -# `uv_tcp_t` - -The TCP handle class represents one endpoint of a duplex TCP stream. -`uv_tcp_t` is a subclass of `uv_stream_t`. A TCP handle can represent a -client side connection (one that has been used with uv_connect_req_init`) -or a server-side connection (one that was initialized with `uv_accept`) - - int uv_connect_req_init(uv_connect_req_t* req, - uv_tcp_t* socket, - struct sockaddr* addr); - -Initiates a request to open a connection. - - - -# `uv_req_t` - -Abstract class represents an asynchronous request. This is a subclass of `uv_handle_t`. - - -# `uv_connect_req_t` - -Subclass of `uv_req_t`. Represents a request for a TCP connection. Operates -on `uv_tcp_t` handles. Like other types of requests the `close_cb` indicates -completion of the request. - - int uv_connect_req_init(uv_connect_req_t* req, - uv_tcp_t* socket, - struct sockaddr* addr); - -Initializes the connection request. Returning 0 indicates success, -1 if -there was an error. The following values can be retrieved from -`uv_last_error` in the case of an error: - -* ??? - - -# `uv_shutdown_req_t` - -Subclass of `uv_req_t`. Represents an ongoing shutdown request. Once the -write queue of the parent `uv_stream_t` is drained, the outbound data -channel is shutdown. Once a shutdown request is initiated on a stream, the -stream will allow no more writes. - - int uv_shutdown_req_init(uv_shutdown_req_t*, - uv_stream_t* parent); - -Initializes the shutdown request. - - -# `uv_write_req_t` - - int uv_write_req_init(uv_write_req_t*, - uv_stream_t*, - uv_buf_t bufs[], - int butcnf); - -Initiates a write request on a stream. diff --git a/deps/uv/eio/Changes b/deps/uv/eio/Changes deleted file mode 100644 index baa94eca9c..0000000000 --- a/deps/uv/eio/Changes +++ /dev/null @@ -1,35 +0,0 @@ -Revision history for libeio - -TODO: maybe add mincore support? available on at least darwin, solaris, linux, freebsd -TODO: openbsd requites stdint.h for intptr_t - why posix? - -1.0 - - readdir: correctly handle malloc failures. - - readdir: new flags argument, can return inode - and possibly filetype, can sort in various ways. - - readdir: stop immediately when cancelled, do - not continue reading the directory. - - fix return value of eio_sendfile_sync. - - include sys/mman.h for msync. - - added EIO_STACKSIZE. - - added msync, mtouch support (untested). - - added sync_file_range (untested). - - fixed custom support. - - use a more robust feed-add detection method. - - "outbundled" from IO::AIO. - - eio_set_max_polltime did not properly convert time to ticks. - - tentatively support darwin in sendfile. - - fix freebsd/darwin sendfile. - - also use sendfile emulation for ENOTSUP and EOPNOTSUPP - error codes. - - add OS-independent EIO_MT_* and EIO_MS_* flag enums. - - add eio_statvfs/eio_fstatvfs. - - add eio_mlock/eio_mlockall and OS-independent MCL_* flag enums. - - no longer set errno to 0 before making syscalls, this only lures - people into the trap of believing errno shows success or failure. - - "fix" demo.c so that it works as non-root. - - suppoert utimes seperately from futimes, as some systems have - utimes but not futimes. - - use _POSIX_MEMLOCK_RANGE for mlock. - - do not (errornously) overwrite CFLAGS in configure.ac. - diff --git a/deps/uv/eio/LICENSE b/deps/uv/eio/LICENSE deleted file mode 100644 index 1ed1324d30..0000000000 --- a/deps/uv/eio/LICENSE +++ /dev/null @@ -1,36 +0,0 @@ -All files in libeio are Copyright (C)2007,2008 Marc Alexander Lehmann. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - * Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following - disclaimer in the documentation and/or other materials provided - with the distribution. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -Alternatively, the contents of this package may be used under the terms -of the GNU General Public License ("GPL") version 2 or any later version, -in which case the provisions of the GPL are applicable instead of the -above. If you wish to allow the use of your version of this package only -under the terms of the GPL and not to allow others to use your version of -this file under the BSD license, indicate your decision by deleting the -provisions above and replace them with the notice and other provisions -required by the GPL in this and the other files of this package. If you do -not delete the provisions above, a recipient may use your version of this -file under either the BSD or the GPL. diff --git a/deps/uv/eio/Makefile.am b/deps/uv/eio/Makefile.am deleted file mode 100644 index 857d26b619..0000000000 --- a/deps/uv/eio/Makefile.am +++ /dev/null @@ -1,15 +0,0 @@ -AUTOMAKE_OPTIONS = foreign no-dependencies - -VERSION_INFO = 1:0 - -EXTRA_DIST = LICENSE Changes autogen.sh - -#man_MANS = ev.3 - -include_HEADERS = eio.h - -lib_LTLIBRARIES = libeio.la - -libeio_la_SOURCES = eio.c xthread.h config.h -libeio_la_LDFLAGS = -version-info $(VERSION_INFO) - diff --git a/deps/uv/eio/aclocal.m4 b/deps/uv/eio/aclocal.m4 deleted file mode 100644 index 18abb73686..0000000000 --- a/deps/uv/eio/aclocal.m4 +++ /dev/null @@ -1,8957 +0,0 @@ -# generated automatically by aclocal 1.11.1 -*- Autoconf -*- - -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, -# 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; without -# even the implied warranty of MERCHANTABILITY or FITNESS FOR A -# PARTICULAR PURPOSE. - -m4_ifndef([AC_AUTOCONF_VERSION], - [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl -m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.67],, -[m4_warning([this file was generated for autoconf 2.67. -You have another version of autoconf. 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then - lt_cv_nm_interface="MS dumpbin" - fi - rm -f conftest*]) -])# LT_PATH_NM - -# Old names: -AU_ALIAS([AM_PROG_NM], [LT_PATH_NM]) -AU_ALIAS([AC_PROG_NM], [LT_PATH_NM]) -dnl aclocal-1.4 backwards compatibility: -dnl AC_DEFUN([AM_PROG_NM], []) -dnl AC_DEFUN([AC_PROG_NM], []) - - -# LT_LIB_M -# -------- -# check for math library -AC_DEFUN([LT_LIB_M], -[AC_REQUIRE([AC_CANONICAL_HOST])dnl -LIBM= -case $host in -*-*-beos* | *-*-cygwin* | *-*-pw32* | *-*-darwin*) - # These system don't have libm, or don't need it - ;; -*-ncr-sysv4.3*) - AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw") - AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm") - ;; -*) - AC_CHECK_LIB(m, cos, LIBM="-lm") - ;; -esac -AC_SUBST([LIBM]) -])# LT_LIB_M - -# Old name: -AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M]) -dnl aclocal-1.4 backwards compatibility: -dnl AC_DEFUN([AC_CHECK_LIBM], []) - - -# _LT_COMPILER_NO_RTTI([TAGNAME]) -# ------------------------------- -m4_defun([_LT_COMPILER_NO_RTTI], -[m4_require([_LT_TAG_COMPILER])dnl - -_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)= - -if test "$GCC" = yes; 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We just wanted to have am__tar - # and am__untar set. - test -n "${am_cv_prog_tar_$1}" && break - - # tar/untar a dummy directory, and stop if the command works - rm -rf conftest.dir - mkdir conftest.dir - echo GrepMe > conftest.dir/file - AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) - rm -rf conftest.dir - if test -s conftest.tar; then - AM_RUN_LOG([$am__untar /dev/null 2>&1 && break - fi -done -rm -rf conftest.dir - -AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) -AC_MSG_RESULT([$am_cv_prog_tar_$1])]) -AC_SUBST([am__tar]) -AC_SUBST([am__untar]) -]) # _AM_PROG_TAR - diff --git a/deps/uv/eio/autogen.sh b/deps/uv/eio/autogen.sh deleted file mode 100755 index bd3387c46c..0000000000 --- a/deps/uv/eio/autogen.sh +++ /dev/null @@ -1,5 +0,0 @@ -libtoolize -aclocal -automake --add-missing -autoconf -autoheader diff --git a/deps/uv/eio/config.h.in b/deps/uv/eio/config.h.in deleted file mode 100644 index 73e9dd07d2..0000000000 --- a/deps/uv/eio/config.h.in +++ /dev/null @@ -1,86 +0,0 @@ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#undef HAVE_DLFCN_H - -/* fdatasync(2) is available */ -#undef HAVE_FDATASYNC - -/* futimes(2) is available */ -#undef HAVE_FUTIMES - -/* Define to 1 if you have the header file. */ -#undef HAVE_INTTYPES_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_MEMORY_H - -/* posix_fadvise(2) is available */ -#undef HAVE_POSIX_FADVISE - -/* posix_madvise(2) is available */ -#undef HAVE_POSIX_MADVISE - -/* pread(2) and pwrite(2) are available */ -#undef HAVE_PREADWRITE - -/* readahead(2) is available (linux) */ -#undef HAVE_READAHEAD - -/* sendfile(2) is available and supported */ -#undef HAVE_SENDFILE - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDINT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDLIB_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRINGS_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRING_H - -/* sync_file_range(2) is available */ -#undef HAVE_SYNC_FILE_RANGE - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_STAT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_TYPES_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_UNISTD_H - -/* utimes(2) is available */ -#undef HAVE_UTIMES - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#undef LT_OBJDIR - -/* Name of package */ -#undef PACKAGE - -/* Define to the address where bug reports for this package should be sent. */ -#undef PACKAGE_BUGREPORT - -/* Define to the full name of this package. */ -#undef PACKAGE_NAME - -/* Define to the full name and version of this package. */ -#undef PACKAGE_STRING - -/* Define to the one symbol short name of this package. */ -#undef PACKAGE_TARNAME - -/* Define to the home page for this package. */ -#undef PACKAGE_URL - -/* Define to the version of this package. */ -#undef PACKAGE_VERSION - -/* Define to 1 if you have the ANSI C header files. */ -#undef STDC_HEADERS diff --git a/deps/uv/eio/config_cygwin.h b/deps/uv/eio/config_cygwin.h deleted file mode 100644 index f149a6b352..0000000000 --- a/deps/uv/eio/config_cygwin.h +++ /dev/null @@ -1,77 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -#define HAVE_FDATASYNC 1 - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -/* #undef HAVE_SENDFILE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/eio/config_darwin.h b/deps/uv/eio/config_darwin.h deleted file mode 100644 index 84a3440df0..0000000000 --- a/deps/uv/eio/config_darwin.h +++ /dev/null @@ -1,82 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is not available on 10.5 but is on 10.6 - * How should we deal with this? */ -/* #define HAVE_FDATASYNC 0 */ - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -#define HAVE_SENDFILE 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/eio/config_freebsd.h b/deps/uv/eio/config_freebsd.h deleted file mode 100644 index b740cdd878..0000000000 --- a/deps/uv/eio/config_freebsd.h +++ /dev/null @@ -1,78 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -/* #undef HAVE_FDATASYNC */ - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -#define HAVE_SENDFILE 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/eio/config_linux.h b/deps/uv/eio/config_linux.h deleted file mode 100644 index 0936e7f3ea..0000000000 --- a/deps/uv/eio/config_linux.h +++ /dev/null @@ -1,81 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -#define HAVE_FDATASYNC 1 - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -#define HAVE_READAHEAD 1 - -/* sendfile(2) is available and supported */ -#define HAVE_SENDFILE 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -#define HAVE_SYNC_FILE_RANGE 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/eio/config_sunos.h b/deps/uv/eio/config_sunos.h deleted file mode 100644 index 8f878efd95..0000000000 --- a/deps/uv/eio/config_sunos.h +++ /dev/null @@ -1,81 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -#define HAVE_FDATASYNC 1 - -/* futimes(2) is available */ -/* #undef HAVE_FUTIMES */ - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -/* #undef HAVE_SENDFILE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/eio/configure.ac b/deps/uv/eio/configure.ac deleted file mode 100644 index 9f4cea9d12..0000000000 --- a/deps/uv/eio/configure.ac +++ /dev/null @@ -1,22 +0,0 @@ -AC_PREREQ(2.59) -AC_INIT -AC_CONFIG_SRCDIR([eio.h]) -AC_CONFIG_HEADERS([config.h]) - -AM_INIT_AUTOMAKE(libeio,1.0) -AM_MAINTAINER_MODE -AC_PROG_LIBTOOL - -AC_PROG_CC - -if test "x$GCC" = xyes ; then - CFLAGS="$CFLAGS -O3" -fi - -dnl somebody will forgive me -CFLAGS="-D_GNU_SOURCE $CFLAGS" - -m4_include([libeio.m4]) - -AC_CONFIG_FILES([Makefile]) -AC_OUTPUT diff --git a/deps/uv/eio/demo.c b/deps/uv/eio/demo.c deleted file mode 100644 index cbef59557f..0000000000 --- a/deps/uv/eio/demo.c +++ /dev/null @@ -1,194 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "eio.h" - -int respipe [2]; - -void -want_poll (void) -{ - char dummy; - printf ("want_poll ()\n"); - write (respipe [1], &dummy, 1); -} - -void -done_poll (void) -{ - char dummy; - printf ("done_poll ()\n"); - read (respipe [0], &dummy, 1); -} - -void -event_loop (void) -{ - // an event loop. yeah. - struct pollfd pfd; - pfd.fd = respipe [0]; - pfd.events = POLLIN; - - printf ("\nentering event loop\n"); - while (eio_nreqs ()) - { - poll (&pfd, 1, -1); - printf ("eio_poll () = %d\n", eio_poll ()); - } - printf ("leaving event loop\n"); -} - -int -res_cb (eio_req *req) -{ - printf ("res_cb(%d|%s) = %d\n", req->type, req->data ? req->data : "?", EIO_RESULT (req)); - - if (req->result < 0) - abort (); - - return 0; -} - -int -readdir_cb (eio_req *req) -{ - char *buf = (char *)EIO_BUF (req); - - printf ("readdir_cb = %d\n", EIO_RESULT (req)); - - if (EIO_RESULT (req) < 0) - return 0; - - while (EIO_RESULT (req)--) - { - printf ("readdir = <%s>\n", buf); - buf += strlen (buf) + 1; - } - - return 0; -} - -int -stat_cb (eio_req *req) -{ - struct stat *buf = EIO_STAT_BUF (req); - - if (req->type == EIO_FSTAT) - printf ("fstat_cb = %d\n", EIO_RESULT (req)); - else - printf ("stat_cb(%s) = %d\n", EIO_PATH (req), EIO_RESULT (req)); - - if (!EIO_RESULT (req)) - printf ("stat size %d perm 0%o\n", buf->st_size, buf->st_mode & 0777); - - return 0; -} - -int -read_cb (eio_req *req) -{ - unsigned char *buf = (unsigned char *)EIO_BUF (req); - - printf ("read_cb = %d (%02x%02x%02x%02x %02x%02x%02x%02x)\n", - EIO_RESULT (req), - buf [0], buf [1], buf [2], buf [3], - buf [4], buf [5], buf [6], buf [7]); - - return 0; -} - -int last_fd; - -int -open_cb (eio_req *req) -{ - printf ("open_cb = %d\n", EIO_RESULT (req)); - - last_fd = EIO_RESULT (req); - - return 0; -} - -int -main (void) -{ - printf ("pipe ()\n"); - if (pipe (respipe)) abort (); - - printf ("eio_init ()\n"); - if (eio_init (want_poll, done_poll)) abort (); - - do - { - /* avoid relative paths yourself(!) */ - eio_mkdir ("eio-test-dir", 0777, 0, res_cb, "mkdir"); - eio_nop (0, res_cb, "nop"); - event_loop (); - - eio_stat ("eio-test-dir", 0, stat_cb, "stat"); - eio_lstat ("eio-test-dir", 0, stat_cb, "stat"); - eio_open ("eio-test-dir/eio-test-file", O_RDWR | O_CREAT, 0777, 0, open_cb, "open"); - eio_symlink ("test", "eio-test-dir/eio-symlink", 0, res_cb, "symlink"); - eio_mknod ("eio-test-dir/eio-fifo", S_IFIFO, 0, 0, res_cb, "mknod"); - event_loop (); - - eio_utime ("eio-test-dir", 12345.678, 23456.789, 0, res_cb, "utime"); - eio_futime (last_fd, 92345.678, 93456.789, 0, res_cb, "futime"); - eio_chown ("eio-test-dir", getuid (), getgid (), 0, res_cb, "chown"); - eio_fchown (last_fd, getuid (), getgid (), 0, res_cb, "fchown"); - eio_fchmod (last_fd, 0723, 0, res_cb, "fchmod"); - eio_readdir ("eio-test-dir", 0, 0, readdir_cb, "readdir"); - eio_readdir ("/nonexistant", 0, 0, readdir_cb, "readdir"); - eio_fstat (last_fd, 0, stat_cb, "stat"); - eio_write (last_fd, "test\nfail\n", 10, 4, 0, res_cb, "write"); - event_loop (); - - eio_read (last_fd, 0, 8, 0, EIO_PRI_DEFAULT, read_cb, "read"); - eio_readlink ("eio-test-dir/eio-symlink", 0, res_cb, "readlink"); - event_loop (); - - eio_dup2 (1, 2, EIO_PRI_DEFAULT, res_cb, "dup"); // dup stdout to stderr - eio_chmod ("eio-test-dir", 0765, 0, res_cb, "chmod"); - eio_ftruncate (last_fd, 9, 0, res_cb, "ftruncate"); - eio_fdatasync (last_fd, 0, res_cb, "fdatasync"); - eio_fsync (last_fd, 0, res_cb, "fsync"); - eio_sync (0, res_cb, "sync"); - eio_busy (0.5, 0, res_cb, "busy"); - event_loop (); - - eio_sendfile (1, last_fd, 4, 5, 0, res_cb, "sendfile"); // write "test\n" to stdout - eio_fstat (last_fd, 0, stat_cb, "stat"); - event_loop (); - - eio_truncate ("eio-test-dir/eio-test-file", 6, 0, res_cb, "truncate"); - eio_readahead (last_fd, 0, 64, 0, res_cb, "readahead"); - event_loop (); - - eio_close (last_fd, 0, res_cb, "close"); - eio_link ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-2", 0, res_cb, "link"); - event_loop (); - - eio_rename ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-renamed", 0, res_cb, "rename"); - event_loop (); - - eio_unlink ("eio-test-dir/eio-fifo", 0, res_cb, "unlink"); - eio_unlink ("eio-test-dir/eio-symlink", 0, res_cb, "unlink"); - eio_unlink ("eio-test-dir/eio-test-file-2", 0, res_cb, "unlink"); - eio_unlink ("eio-test-dir/eio-test-file-renamed", 0, res_cb, "unlink"); - event_loop (); - - eio_rmdir ("eio-test-dir", 0, res_cb, "rmdir"); - event_loop (); - } - while (0); - - return 0; -} - diff --git a/deps/uv/eio/eio.3 b/deps/uv/eio/eio.3 deleted file mode 100644 index ec5bde33e1..0000000000 --- a/deps/uv/eio/eio.3 +++ /dev/null @@ -1,3428 +0,0 @@ -.\" Automatically generated by Pod::Man 2.16 (Pod::Simple 3.05) -.\" -.\" Standard preamble: -.\" ======================================================================== -.de Sh \" Subsection heading -.br -.if t .Sp -.ne 5 -.PP -\fB\\$1\fR -.PP -.. -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Vb \" Begin verbatim text -.ft CW -.nf -.ne \\$1 -.. -.de Ve \" End verbatim text -.ft R -.fi -.. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. \*(C+ will -.\" give a nicer C++. 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Always turn off hyphenation; it makes -.\" way too many mistakes in technical documents. -.if n .ad l -.nh -.SH "NAME" -libev \- a high performance full\-featured event loop written in C -.SH "SYNOPSIS" -.IX Header "SYNOPSIS" -.Vb 1 -\& #include -.Ve -.Sh "\s-1EXAMPLE\s0 \s-1PROGRAM\s0" -.IX Subsection "EXAMPLE PROGRAM" -.Vb 2 -\& // a single header file is required -\& #include -\& -\& // every watcher type has its own typedef\*(Aqd struct -\& // with the name ev_ -\& ev_io stdin_watcher; -\& ev_timer timeout_watcher; -\& -\& // all watcher callbacks have a similar signature -\& // this callback is called when data is readable on stdin -\& static void -\& stdin_cb (EV_P_ struct ev_io *w, int revents) -\& { -\& puts ("stdin ready"); -\& // for one\-shot events, one must manually stop the watcher -\& // with its corresponding stop function. -\& ev_io_stop (EV_A_ w); -\& -\& // this causes all nested ev_loop\*(Aqs to stop iterating -\& ev_unloop (EV_A_ EVUNLOOP_ALL); -\& } -\& -\& // another callback, this time for a time\-out -\& static void -\& timeout_cb (EV_P_ struct ev_timer *w, int revents) -\& { -\& puts ("timeout"); -\& // this causes the innermost ev_loop to stop iterating -\& ev_unloop (EV_A_ EVUNLOOP_ONE); -\& } -\& -\& int -\& main (void) -\& { -\& // use the default event loop unless you have special needs -\& struct ev_loop *loop = ev_default_loop (0); -\& -\& // initialise an io watcher, then start it -\& // this one will watch for stdin to become readable -\& ev_io_init (&stdin_watcher, stdin_cb, /*STDIN_FILENO*/ 0, EV_READ); -\& ev_io_start (loop, &stdin_watcher); -\& -\& // initialise a timer watcher, then start it -\& // simple non\-repeating 5.5 second timeout -\& ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.); -\& ev_timer_start (loop, &timeout_watcher); -\& -\& // now wait for events to arrive -\& ev_loop (loop, 0); -\& -\& // unloop was called, so exit -\& return 0; -\& } -.Ve -.SH "DESCRIPTION" -.IX Header "DESCRIPTION" -The newest version of this document is also available as an html-formatted -web page you might find easier to navigate when reading it for the first -time: . -.PP -Libev is an event loop: you register interest in certain events (such as a -file descriptor being readable or a timeout occurring), and it will manage -these event sources and provide your program with events. -.PP -To do this, it must take more or less complete control over your process -(or thread) by executing the \fIevent loop\fR handler, and will then -communicate events via a callback mechanism. -.PP -You register interest in certain events by registering so-called \fIevent -watchers\fR, which are relatively small C structures you initialise with the -details of the event, and then hand it over to libev by \fIstarting\fR the -watcher. -.Sh "\s-1FEATURES\s0" -.IX Subsection "FEATURES" -Libev supports \f(CW\*(C`select\*(C'\fR, \f(CW\*(C`poll\*(C'\fR, the Linux-specific \f(CW\*(C`epoll\*(C'\fR, the -BSD-specific \f(CW\*(C`kqueue\*(C'\fR and the Solaris-specific event port mechanisms -for file descriptor events (\f(CW\*(C`ev_io\*(C'\fR), the Linux \f(CW\*(C`inotify\*(C'\fR interface -(for \f(CW\*(C`ev_stat\*(C'\fR), relative timers (\f(CW\*(C`ev_timer\*(C'\fR), absolute timers -with customised rescheduling (\f(CW\*(C`ev_periodic\*(C'\fR), synchronous signals -(\f(CW\*(C`ev_signal\*(C'\fR), process status change events (\f(CW\*(C`ev_child\*(C'\fR), and event -watchers dealing with the event loop mechanism itself (\f(CW\*(C`ev_idle\*(C'\fR, -\&\f(CW\*(C`ev_embed\*(C'\fR, \f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR watchers) as well as -file watchers (\f(CW\*(C`ev_stat\*(C'\fR) and even limited support for fork events -(\f(CW\*(C`ev_fork\*(C'\fR). -.PP -It also is quite fast (see this -benchmark comparing it to libevent -for example). -.Sh "\s-1CONVENTIONS\s0" -.IX Subsection "CONVENTIONS" -Libev is very configurable. In this manual the default (and most common) -configuration will be described, which supports multiple event loops. For -more info about various configuration options please have a look at -\&\fB\s-1EMBED\s0\fR section in this manual. If libev was configured without support -for multiple event loops, then all functions taking an initial argument of -name \f(CW\*(C`loop\*(C'\fR (which is always of type \f(CW\*(C`struct ev_loop *\*(C'\fR) will not have -this argument. -.Sh "\s-1TIME\s0 \s-1REPRESENTATION\s0" -.IX Subsection "TIME REPRESENTATION" -Libev represents time as a single floating point number, representing the -(fractional) number of seconds since the (\s-1POSIX\s0) epoch (somewhere near -the beginning of 1970, details are complicated, don't ask). This type is -called \f(CW\*(C`ev_tstamp\*(C'\fR, which is what you should use too. It usually aliases -to the \f(CW\*(C`double\*(C'\fR type in C, and when you need to do any calculations on -it, you should treat it as some floatingpoint value. Unlike the name -component \f(CW\*(C`stamp\*(C'\fR might indicate, it is also used for time differences -throughout libev. -.SH "GLOBAL FUNCTIONS" -.IX Header "GLOBAL FUNCTIONS" -These functions can be called anytime, even before initialising the -library in any way. -.IP "ev_tstamp ev_time ()" 4 -.IX Item "ev_tstamp ev_time ()" -Returns the current time as libev would use it. Please note that the -\&\f(CW\*(C`ev_now\*(C'\fR function is usually faster and also often returns the timestamp -you actually want to know. -.IP "ev_sleep (ev_tstamp interval)" 4 -.IX Item "ev_sleep (ev_tstamp interval)" -Sleep for the given interval: The current thread will be blocked until -either it is interrupted or the given time interval has passed. Basically -this is a subsecond-resolution \f(CW\*(C`sleep ()\*(C'\fR. -.IP "int ev_version_major ()" 4 -.IX Item "int ev_version_major ()" -.PD 0 -.IP "int ev_version_minor ()" 4 -.IX Item "int ev_version_minor ()" -.PD -You can find out the major and minor \s-1ABI\s0 version numbers of the library -you linked against by calling the functions \f(CW\*(C`ev_version_major\*(C'\fR and -\&\f(CW\*(C`ev_version_minor\*(C'\fR. If you want, you can compare against the global -symbols \f(CW\*(C`EV_VERSION_MAJOR\*(C'\fR and \f(CW\*(C`EV_VERSION_MINOR\*(C'\fR, which specify the -version of the library your program was compiled against. -.Sp -These version numbers refer to the \s-1ABI\s0 version of the library, not the -release version. -.Sp -Usually, it's a good idea to terminate if the major versions mismatch, -as this indicates an incompatible change. Minor versions are usually -compatible to older versions, so a larger minor version alone is usually -not a problem. -.Sp -Example: Make sure we haven't accidentally been linked against the wrong -version. -.Sp -.Vb 3 -\& assert (("libev version mismatch", -\& ev_version_major () == EV_VERSION_MAJOR -\& && ev_version_minor () >= EV_VERSION_MINOR)); -.Ve -.IP "unsigned int ev_supported_backends ()" 4 -.IX Item "unsigned int ev_supported_backends ()" -Return the set of all backends (i.e. their corresponding \f(CW\*(C`EV_BACKEND_*\*(C'\fR -value) compiled into this binary of libev (independent of their -availability on the system you are running on). See \f(CW\*(C`ev_default_loop\*(C'\fR for -a description of the set values. -.Sp -Example: make sure we have the epoll method, because yeah this is cool and -a must have and can we have a torrent of it please!!!11 -.Sp -.Vb 2 -\& assert (("sorry, no epoll, no sex", -\& ev_supported_backends () & EVBACKEND_EPOLL)); -.Ve -.IP "unsigned int ev_recommended_backends ()" 4 -.IX Item "unsigned int ev_recommended_backends ()" -Return the set of all backends compiled into this binary of libev and also -recommended for this platform. This set is often smaller than the one -returned by \f(CW\*(C`ev_supported_backends\*(C'\fR, as for example kqueue is broken on -most BSDs and will not be autodetected unless you explicitly request it -(assuming you know what you are doing). This is the set of backends that -libev will probe for if you specify no backends explicitly. -.IP "unsigned int ev_embeddable_backends ()" 4 -.IX Item "unsigned int ev_embeddable_backends ()" -Returns the set of backends that are embeddable in other event loops. This -is the theoretical, all-platform, value. To find which backends -might be supported on the current system, you would need to look at -\&\f(CW\*(C`ev_embeddable_backends () & ev_supported_backends ()\*(C'\fR, likewise for -recommended ones. -.Sp -See the description of \f(CW\*(C`ev_embed\*(C'\fR watchers for more info. -.IP "ev_set_allocator (void *(*cb)(void *ptr, long size))" 4 -.IX Item "ev_set_allocator (void *(*cb)(void *ptr, long size))" -Sets the allocation function to use (the prototype is similar \- the -semantics are identical to the \f(CW\*(C`realloc\*(C'\fR C89/SuS/POSIX function). It is -used to allocate and free memory (no surprises here). If it returns zero -when memory needs to be allocated (\f(CW\*(C`size != 0\*(C'\fR), the library might abort -or take some potentially destructive action. -.Sp -Since some systems (at least OpenBSD and Darwin) fail to implement -correct \f(CW\*(C`realloc\*(C'\fR semantics, libev will use a wrapper around the system -\&\f(CW\*(C`realloc\*(C'\fR and \f(CW\*(C`free\*(C'\fR functions by default. -.Sp -You could override this function in high-availability programs to, say, -free some memory if it cannot allocate memory, to use a special allocator, -or even to sleep a while and retry until some memory is available. -.Sp -Example: Replace the libev allocator with one that waits a bit and then -retries (example requires a standards-compliant \f(CW\*(C`realloc\*(C'\fR). -.Sp -.Vb 6 -\& static void * -\& persistent_realloc (void *ptr, size_t size) -\& { -\& for (;;) -\& { -\& void *newptr = realloc (ptr, size); -\& -\& if (newptr) -\& return newptr; -\& -\& sleep (60); -\& } -\& } -\& -\& ... -\& ev_set_allocator (persistent_realloc); -.Ve -.IP "ev_set_syserr_cb (void (*cb)(const char *msg));" 4 -.IX Item "ev_set_syserr_cb (void (*cb)(const char *msg));" -Set the callback function to call on a retryable syscall error (such -as failed select, poll, epoll_wait). The message is a printable string -indicating the system call or subsystem causing the problem. If this -callback is set, then libev will expect it to remedy the sitution, no -matter what, when it returns. That is, libev will generally retry the -requested operation, or, if the condition doesn't go away, do bad stuff -(such as abort). -.Sp -Example: This is basically the same thing that libev does internally, too. -.Sp -.Vb 6 -\& static void -\& fatal_error (const char *msg) -\& { -\& perror (msg); -\& abort (); -\& } -\& -\& ... -\& ev_set_syserr_cb (fatal_error); -.Ve -.SH "FUNCTIONS CONTROLLING THE EVENT LOOP" -.IX Header "FUNCTIONS CONTROLLING THE EVENT LOOP" -An event loop is described by a \f(CW\*(C`struct ev_loop *\*(C'\fR. The library knows two -types of such loops, the \fIdefault\fR loop, which supports signals and child -events, and dynamically created loops which do not. -.IP "struct ev_loop *ev_default_loop (unsigned int flags)" 4 -.IX Item "struct ev_loop *ev_default_loop (unsigned int flags)" -This will initialise the default event loop if it hasn't been initialised -yet and return it. If the default loop could not be initialised, returns -false. If it already was initialised it simply returns it (and ignores the -flags. If that is troubling you, check \f(CW\*(C`ev_backend ()\*(C'\fR afterwards). -.Sp -If you don't know what event loop to use, use the one returned from this -function. -.Sp -Note that this function is \fInot\fR thread-safe, so if you want to use it -from multiple threads, you have to lock (note also that this is unlikely, -as loops cannot bes hared easily between threads anyway). -.Sp -The default loop is the only loop that can handle \f(CW\*(C`ev_signal\*(C'\fR and -\&\f(CW\*(C`ev_child\*(C'\fR watchers, and to do this, it always registers a handler -for \f(CW\*(C`SIGCHLD\*(C'\fR. If this is a problem for your app you can either -create a dynamic loop with \f(CW\*(C`ev_loop_new\*(C'\fR that doesn't do that, or you -can simply overwrite the \f(CW\*(C`SIGCHLD\*(C'\fR signal handler \fIafter\fR calling -\&\f(CW\*(C`ev_default_init\*(C'\fR. -.Sp -The flags argument can be used to specify special behaviour or specific -backends to use, and is usually specified as \f(CW0\fR (or \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). -.Sp -The following flags are supported: -.RS 4 -.ie n .IP """EVFLAG_AUTO""" 4 -.el .IP "\f(CWEVFLAG_AUTO\fR" 4 -.IX Item "EVFLAG_AUTO" -The default flags value. Use this if you have no clue (it's the right -thing, believe me). -.ie n .IP """EVFLAG_NOENV""" 4 -.el .IP "\f(CWEVFLAG_NOENV\fR" 4 -.IX Item "EVFLAG_NOENV" -If this flag bit is ored into the flag value (or the program runs setuid -or setgid) then libev will \fInot\fR look at the environment variable -\&\f(CW\*(C`LIBEV_FLAGS\*(C'\fR. Otherwise (the default), this environment variable will -override the flags completely if it is found in the environment. This is -useful to try out specific backends to test their performance, or to work -around bugs. -.ie n .IP """EVFLAG_FORKCHECK""" 4 -.el .IP "\f(CWEVFLAG_FORKCHECK\fR" 4 -.IX Item "EVFLAG_FORKCHECK" -Instead of calling \f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR manually after -a fork, you can also make libev check for a fork in each iteration by -enabling this flag. -.Sp -This works by calling \f(CW\*(C`getpid ()\*(C'\fR on every iteration of the loop, -and thus this might slow down your event loop if you do a lot of loop -iterations and little real work, but is usually not noticeable (on my -GNU/Linux system for example, \f(CW\*(C`getpid\*(C'\fR is actually a simple 5\-insn sequence -without a syscall and thus \fIvery\fR fast, but my GNU/Linux system also has -\&\f(CW\*(C`pthread_atfork\*(C'\fR which is even faster). -.Sp -The big advantage of this flag is that you can forget about fork (and -forget about forgetting to tell libev about forking) when you use this -flag. -.Sp -This flag setting cannot be overriden or specified in the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR -environment variable. -.ie n .IP """EVBACKEND_SELECT"" (value 1, portable select backend)" 4 -.el .IP "\f(CWEVBACKEND_SELECT\fR (value 1, portable select backend)" 4 -.IX Item "EVBACKEND_SELECT (value 1, portable select backend)" -This is your standard \fIselect\fR\|(2) backend. Not \fIcompletely\fR standard, as -libev tries to roll its own fd_set with no limits on the number of fds, -but if that fails, expect a fairly low limit on the number of fds when -using this backend. It doesn't scale too well (O(highest_fd)), but its -usually the fastest backend for a low number of (low-numbered :) fds. -.Sp -To get good performance out of this backend you need a high amount of -parallelity (most of the file descriptors should be busy). If you are -writing a server, you should \f(CW\*(C`accept ()\*(C'\fR in a loop to accept as many -connections as possible during one iteration. You might also want to have -a look at \f(CW\*(C`ev_set_io_collect_interval ()\*(C'\fR to increase the amount of -readyness notifications you get per iteration. -.ie n .IP """EVBACKEND_POLL"" (value 2, poll backend, available everywhere except on windows)" 4 -.el .IP "\f(CWEVBACKEND_POLL\fR (value 2, poll backend, available everywhere except on windows)" 4 -.IX Item "EVBACKEND_POLL (value 2, poll backend, available everywhere except on windows)" -And this is your standard \fIpoll\fR\|(2) backend. It's more complicated -than select, but handles sparse fds better and has no artificial -limit on the number of fds you can use (except it will slow down -considerably with a lot of inactive fds). It scales similarly to select, -i.e. O(total_fds). See the entry for \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR, above, for -performance tips. -.ie n .IP """EVBACKEND_EPOLL"" (value 4, Linux)" 4 -.el .IP "\f(CWEVBACKEND_EPOLL\fR (value 4, Linux)" 4 -.IX Item "EVBACKEND_EPOLL (value 4, Linux)" -For few fds, this backend is a bit little slower than poll and select, -but it scales phenomenally better. While poll and select usually scale -like O(total_fds) where n is the total number of fds (or the highest fd), -epoll scales either O(1) or O(active_fds). The epoll design has a number -of shortcomings, such as silently dropping events in some hard-to-detect -cases and requiring a syscall per fd change, no fork support and bad -support for dup. -.Sp -While stopping, setting and starting an I/O watcher in the same iteration -will result in some caching, there is still a syscall per such incident -(because the fd could point to a different file description now), so its -best to avoid that. Also, \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors might not work -very well if you register events for both fds. -.Sp -Please note that epoll sometimes generates spurious notifications, so you -need to use non-blocking I/O or other means to avoid blocking when no data -(or space) is available. -.Sp -Best performance from this backend is achieved by not unregistering all -watchers for a file descriptor until it has been closed, if possible, i.e. -keep at least one watcher active per fd at all times. -.Sp -While nominally embeddeble in other event loops, this feature is broken in -all kernel versions tested so far. -.ie n .IP """EVBACKEND_KQUEUE"" (value 8, most \s-1BSD\s0 clones)" 4 -.el .IP "\f(CWEVBACKEND_KQUEUE\fR (value 8, most \s-1BSD\s0 clones)" 4 -.IX Item "EVBACKEND_KQUEUE (value 8, most BSD clones)" -Kqueue deserves special mention, as at the time of this writing, it -was broken on all BSDs except NetBSD (usually it doesn't work reliably -with anything but sockets and pipes, except on Darwin, where of course -it's completely useless). For this reason it's not being \*(L"autodetected\*(R" -unless you explicitly specify it explicitly in the flags (i.e. using -\&\f(CW\*(C`EVBACKEND_KQUEUE\*(C'\fR) or libev was compiled on a known-to-be-good (\-enough) -system like NetBSD. -.Sp -You still can embed kqueue into a normal poll or select backend and use it -only for sockets (after having made sure that sockets work with kqueue on -the target platform). See \f(CW\*(C`ev_embed\*(C'\fR watchers for more info. -.Sp -It scales in the same way as the epoll backend, but the interface to the -kernel is more efficient (which says nothing about its actual speed, of -course). While stopping, setting and starting an I/O watcher does never -cause an extra syscall as with \f(CW\*(C`EVBACKEND_EPOLL\*(C'\fR, it still adds up to -two event changes per incident, support for \f(CW\*(C`fork ()\*(C'\fR is very bad and it -drops fds silently in similarly hard-to-detect cases. -.Sp -This backend usually performs well under most conditions. -.Sp -While nominally embeddable in other event loops, this doesn't work -everywhere, so you might need to test for this. And since it is broken -almost everywhere, you should only use it when you have a lot of sockets -(for which it usually works), by embedding it into another event loop -(e.g. \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR) and using it only for -sockets. -.ie n .IP """EVBACKEND_DEVPOLL"" (value 16, Solaris 8)" 4 -.el .IP "\f(CWEVBACKEND_DEVPOLL\fR (value 16, Solaris 8)" 4 -.IX Item "EVBACKEND_DEVPOLL (value 16, Solaris 8)" -This is not implemented yet (and might never be, unless you send me an -implementation). According to reports, \f(CW\*(C`/dev/poll\*(C'\fR only supports sockets -and is not embeddable, which would limit the usefulness of this backend -immensely. -.ie n .IP """EVBACKEND_PORT"" (value 32, Solaris 10)" 4 -.el .IP "\f(CWEVBACKEND_PORT\fR (value 32, Solaris 10)" 4 -.IX Item "EVBACKEND_PORT (value 32, Solaris 10)" -This uses the Solaris 10 event port mechanism. As with everything on Solaris, -it's really slow, but it still scales very well (O(active_fds)). -.Sp -Please note that solaris event ports can deliver a lot of spurious -notifications, so you need to use non-blocking I/O or other means to avoid -blocking when no data (or space) is available. -.Sp -While this backend scales well, it requires one system call per active -file descriptor per loop iteration. For small and medium numbers of file -descriptors a \*(L"slow\*(R" \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR backend -might perform better. -.Sp -On the positive side, ignoring the spurious readyness notifications, this -backend actually performed to specification in all tests and is fully -embeddable, which is a rare feat among the OS-specific backends. -.ie n .IP """EVBACKEND_ALL""" 4 -.el .IP "\f(CWEVBACKEND_ALL\fR" 4 -.IX Item "EVBACKEND_ALL" -Try all backends (even potentially broken ones that wouldn't be tried -with \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). Since this is a mask, you can do stuff such as -\&\f(CW\*(C`EVBACKEND_ALL & ~EVBACKEND_KQUEUE\*(C'\fR. -.Sp -It is definitely not recommended to use this flag. -.RE -.RS 4 -.Sp -If one or more of these are ored into the flags value, then only these -backends will be tried (in the reverse order as listed here). If none are -specified, all backends in \f(CW\*(C`ev_recommended_backends ()\*(C'\fR will be tried. -.Sp -The most typical usage is like this: -.Sp -.Vb 2 -\& if (!ev_default_loop (0)) -\& fatal ("could not initialise libev, bad $LIBEV_FLAGS in environment?"); -.Ve -.Sp -Restrict libev to the select and poll backends, and do not allow -environment settings to be taken into account: -.Sp -.Vb 1 -\& ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV); -.Ve -.Sp -Use whatever libev has to offer, but make sure that kqueue is used if -available (warning, breaks stuff, best use only with your own private -event loop and only if you know the \s-1OS\s0 supports your types of fds): -.Sp -.Vb 1 -\& ev_default_loop (ev_recommended_backends () | EVBACKEND_KQUEUE); -.Ve -.RE -.IP "struct ev_loop *ev_loop_new (unsigned int flags)" 4 -.IX Item "struct ev_loop *ev_loop_new (unsigned int flags)" -Similar to \f(CW\*(C`ev_default_loop\*(C'\fR, but always creates a new event loop that is -always distinct from the default loop. Unlike the default loop, it cannot -handle signal and child watchers, and attempts to do so will be greeted by -undefined behaviour (or a failed assertion if assertions are enabled). -.Sp -Note that this function \fIis\fR thread-safe, and the recommended way to use -libev with threads is indeed to create one loop per thread, and using the -default loop in the \*(L"main\*(R" or \*(L"initial\*(R" thread. -.Sp -Example: Try to create a event loop that uses epoll and nothing else. -.Sp -.Vb 3 -\& struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV); -\& if (!epoller) -\& fatal ("no epoll found here, maybe it hides under your chair"); -.Ve -.IP "ev_default_destroy ()" 4 -.IX Item "ev_default_destroy ()" -Destroys the default loop again (frees all memory and kernel state -etc.). None of the active event watchers will be stopped in the normal -sense, so e.g. \f(CW\*(C`ev_is_active\*(C'\fR might still return true. It is your -responsibility to either stop all watchers cleanly yoursef \fIbefore\fR -calling this function, or cope with the fact afterwards (which is usually -the easiest thing, you can just ignore the watchers and/or \f(CW\*(C`free ()\*(C'\fR them -for example). -.Sp -Note that certain global state, such as signal state, will not be freed by -this function, and related watchers (such as signal and child watchers) -would need to be stopped manually. -.Sp -In general it is not advisable to call this function except in the -rare occasion where you really need to free e.g. the signal handling -pipe fds. If you need dynamically allocated loops it is better to use -\&\f(CW\*(C`ev_loop_new\*(C'\fR and \f(CW\*(C`ev_loop_destroy\*(C'\fR). -.IP "ev_loop_destroy (loop)" 4 -.IX Item "ev_loop_destroy (loop)" -Like \f(CW\*(C`ev_default_destroy\*(C'\fR, but destroys an event loop created by an -earlier call to \f(CW\*(C`ev_loop_new\*(C'\fR. -.IP "ev_default_fork ()" 4 -.IX Item "ev_default_fork ()" -This function sets a flag that causes subsequent \f(CW\*(C`ev_loop\*(C'\fR iterations -to reinitialise the kernel state for backends that have one. Despite the -name, you can call it anytime, but it makes most sense after forking, in -the child process (or both child and parent, but that again makes little -sense). You \fImust\fR call it in the child before using any of the libev -functions, and it will only take effect at the next \f(CW\*(C`ev_loop\*(C'\fR iteration. -.Sp -On the other hand, you only need to call this function in the child -process if and only if you want to use the event library in the child. If -you just fork+exec, you don't have to call it at all. -.Sp -The function itself is quite fast and it's usually not a problem to call -it just in case after a fork. To make this easy, the function will fit in -quite nicely into a call to \f(CW\*(C`pthread_atfork\*(C'\fR: -.Sp -.Vb 1 -\& pthread_atfork (0, 0, ev_default_fork); -.Ve -.IP "ev_loop_fork (loop)" 4 -.IX Item "ev_loop_fork (loop)" -Like \f(CW\*(C`ev_default_fork\*(C'\fR, but acts on an event loop created by -\&\f(CW\*(C`ev_loop_new\*(C'\fR. Yes, you have to call this on every allocated event loop -after fork, and how you do this is entirely your own problem. -.IP "int ev_is_default_loop (loop)" 4 -.IX Item "int ev_is_default_loop (loop)" -Returns true when the given loop actually is the default loop, false otherwise. -.IP "unsigned int ev_loop_count (loop)" 4 -.IX Item "unsigned int ev_loop_count (loop)" -Returns the count of loop iterations for the loop, which is identical to -the number of times libev did poll for new events. It starts at \f(CW0\fR and -happily wraps around with enough iterations. -.Sp -This value can sometimes be useful as a generation counter of sorts (it -\&\*(L"ticks\*(R" the number of loop iterations), as it roughly corresponds with -\&\f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR calls. -.IP "unsigned int ev_backend (loop)" 4 -.IX Item "unsigned int ev_backend (loop)" -Returns one of the \f(CW\*(C`EVBACKEND_*\*(C'\fR flags indicating the event backend in -use. -.IP "ev_tstamp ev_now (loop)" 4 -.IX Item "ev_tstamp ev_now (loop)" -Returns the current \*(L"event loop time\*(R", which is the time the event loop -received events and started processing them. This timestamp does not -change as long as callbacks are being processed, and this is also the base -time used for relative timers. You can treat it as the timestamp of the -event occurring (or more correctly, libev finding out about it). -.IP "ev_loop (loop, int flags)" 4 -.IX Item "ev_loop (loop, int flags)" -Finally, this is it, the event handler. This function usually is called -after you initialised all your watchers and you want to start handling -events. -.Sp -If the flags argument is specified as \f(CW0\fR, it will not return until -either no event watchers are active anymore or \f(CW\*(C`ev_unloop\*(C'\fR was called. -.Sp -Please note that an explicit \f(CW\*(C`ev_unloop\*(C'\fR is usually better than -relying on all watchers to be stopped when deciding when a program has -finished (especially in interactive programs), but having a program that -automatically loops as long as it has to and no longer by virtue of -relying on its watchers stopping correctly is a thing of beauty. -.Sp -A flags value of \f(CW\*(C`EVLOOP_NONBLOCK\*(C'\fR will look for new events, will handle -those events and any outstanding ones, but will not block your process in -case there are no events and will return after one iteration of the loop. -.Sp -A flags value of \f(CW\*(C`EVLOOP_ONESHOT\*(C'\fR will look for new events (waiting if -neccessary) and will handle those and any outstanding ones. It will block -your process until at least one new event arrives, and will return after -one iteration of the loop. This is useful if you are waiting for some -external event in conjunction with something not expressible using other -libev watchers. However, a pair of \f(CW\*(C`ev_prepare\*(C'\fR/\f(CW\*(C`ev_check\*(C'\fR watchers is -usually a better approach for this kind of thing. -.Sp -Here are the gory details of what \f(CW\*(C`ev_loop\*(C'\fR does: -.Sp -.Vb 10 -\& \- Before the first iteration, call any pending watchers. -\& * If EVFLAG_FORKCHECK was used, check for a fork. -\& \- If a fork was detected, queue and call all fork watchers. -\& \- Queue and call all prepare watchers. -\& \- If we have been forked, recreate the kernel state. -\& \- Update the kernel state with all outstanding changes. -\& \- Update the "event loop time". -\& \- Calculate for how long to sleep or block, if at all -\& (active idle watchers, EVLOOP_NONBLOCK or not having -\& any active watchers at all will result in not sleeping). -\& \- Sleep if the I/O and timer collect interval say so. -\& \- Block the process, waiting for any events. -\& \- Queue all outstanding I/O (fd) events. -\& \- Update the "event loop time" and do time jump handling. -\& \- Queue all outstanding timers. -\& \- Queue all outstanding periodics. -\& \- If no events are pending now, queue all idle watchers. -\& \- Queue all check watchers. -\& \- Call all queued watchers in reverse order (i.e. check watchers first). -\& Signals and child watchers are implemented as I/O watchers, and will -\& be handled here by queueing them when their watcher gets executed. -\& \- If ev_unloop has been called, or EVLOOP_ONESHOT or EVLOOP_NONBLOCK -\& were used, or there are no active watchers, return, otherwise -\& continue with step *. -.Ve -.Sp -Example: Queue some jobs and then loop until no events are outstanding -anymore. -.Sp -.Vb 4 -\& ... queue jobs here, make sure they register event watchers as long -\& ... as they still have work to do (even an idle watcher will do..) -\& ev_loop (my_loop, 0); -\& ... jobs done. yeah! -.Ve -.IP "ev_unloop (loop, how)" 4 -.IX Item "ev_unloop (loop, how)" -Can be used to make a call to \f(CW\*(C`ev_loop\*(C'\fR return early (but only after it -has processed all outstanding events). The \f(CW\*(C`how\*(C'\fR argument must be either -\&\f(CW\*(C`EVUNLOOP_ONE\*(C'\fR, which will make the innermost \f(CW\*(C`ev_loop\*(C'\fR call return, or -\&\f(CW\*(C`EVUNLOOP_ALL\*(C'\fR, which will make all nested \f(CW\*(C`ev_loop\*(C'\fR calls return. -.Sp -This \*(L"unloop state\*(R" will be cleared when entering \f(CW\*(C`ev_loop\*(C'\fR again. -.IP "ev_ref (loop)" 4 -.IX Item "ev_ref (loop)" -.PD 0 -.IP "ev_unref (loop)" 4 -.IX Item "ev_unref (loop)" -.PD -Ref/unref can be used to add or remove a reference count on the event -loop: Every watcher keeps one reference, and as long as the reference -count is nonzero, \f(CW\*(C`ev_loop\*(C'\fR will not return on its own. If you have -a watcher you never unregister that should not keep \f(CW\*(C`ev_loop\*(C'\fR from -returning, \fIev_unref()\fR after starting, and \fIev_ref()\fR before stopping it. For -example, libev itself uses this for its internal signal pipe: It is not -visible to the libev user and should not keep \f(CW\*(C`ev_loop\*(C'\fR from exiting if -no event watchers registered by it are active. It is also an excellent -way to do this for generic recurring timers or from within third-party -libraries. Just remember to \fIunref after start\fR and \fIref before stop\fR -(but only if the watcher wasn't active before, or was active before, -respectively). -.Sp -Example: Create a signal watcher, but keep it from keeping \f(CW\*(C`ev_loop\*(C'\fR -running when nothing else is active. -.Sp -.Vb 4 -\& struct ev_signal exitsig; -\& ev_signal_init (&exitsig, sig_cb, SIGINT); -\& ev_signal_start (loop, &exitsig); -\& evf_unref (loop); -.Ve -.Sp -Example: For some weird reason, unregister the above signal handler again. -.Sp -.Vb 2 -\& ev_ref (loop); -\& ev_signal_stop (loop, &exitsig); -.Ve -.IP "ev_set_io_collect_interval (loop, ev_tstamp interval)" 4 -.IX Item "ev_set_io_collect_interval (loop, ev_tstamp interval)" -.PD 0 -.IP "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" 4 -.IX Item "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" -.PD -These advanced functions influence the time that libev will spend waiting -for events. Both are by default \f(CW0\fR, meaning that libev will try to -invoke timer/periodic callbacks and I/O callbacks with minimum latency. -.Sp -Setting these to a higher value (the \f(CW\*(C`interval\*(C'\fR \fImust\fR be >= \f(CW0\fR) -allows libev to delay invocation of I/O and timer/periodic callbacks to -increase efficiency of loop iterations. -.Sp -The background is that sometimes your program runs just fast enough to -handle one (or very few) event(s) per loop iteration. While this makes -the program responsive, it also wastes a lot of \s-1CPU\s0 time to poll for new -events, especially with backends like \f(CW\*(C`select ()\*(C'\fR which have a high -overhead for the actual polling but can deliver many events at once. -.Sp -By setting a higher \fIio collect interval\fR you allow libev to spend more -time collecting I/O events, so you can handle more events per iteration, -at the cost of increasing latency. Timeouts (both \f(CW\*(C`ev_periodic\*(C'\fR and -\&\f(CW\*(C`ev_timer\*(C'\fR) will be not affected. Setting this to a non-null value will -introduce an additional \f(CW\*(C`ev_sleep ()\*(C'\fR call into most loop iterations. -.Sp -Likewise, by setting a higher \fItimeout collect interval\fR you allow libev -to spend more time collecting timeouts, at the expense of increased -latency (the watcher callback will be called later). \f(CW\*(C`ev_io\*(C'\fR watchers -will not be affected. Setting this to a non-null value will not introduce -any overhead in libev. -.Sp -Many (busy) programs can usually benefit by setting the io collect -interval to a value near \f(CW0.1\fR or so, which is often enough for -interactive servers (of course not for games), likewise for timeouts. It -usually doesn't make much sense to set it to a lower value than \f(CW0.01\fR, -as this approsaches the timing granularity of most systems. -.SH "ANATOMY OF A WATCHER" -.IX Header "ANATOMY OF A WATCHER" -A watcher is a structure that you create and register to record your -interest in some event. For instance, if you want to wait for \s-1STDIN\s0 to -become readable, you would create an \f(CW\*(C`ev_io\*(C'\fR watcher for that: -.PP -.Vb 5 -\& static void my_cb (struct ev_loop *loop, struct ev_io *w, int revents) -\& { -\& ev_io_stop (w); -\& ev_unloop (loop, EVUNLOOP_ALL); -\& } -\& -\& struct ev_loop *loop = ev_default_loop (0); -\& struct ev_io stdin_watcher; -\& ev_init (&stdin_watcher, my_cb); -\& ev_io_set (&stdin_watcher, STDIN_FILENO, EV_READ); -\& ev_io_start (loop, &stdin_watcher); -\& ev_loop (loop, 0); -.Ve -.PP -As you can see, you are responsible for allocating the memory for your -watcher structures (and it is usually a bad idea to do this on the stack, -although this can sometimes be quite valid). -.PP -Each watcher structure must be initialised by a call to \f(CW\*(C`ev_init -(watcher *, callback)\*(C'\fR, which expects a callback to be provided. This -callback gets invoked each time the event occurs (or, in the case of io -watchers, each time the event loop detects that the file descriptor given -is readable and/or writable). -.PP -Each watcher type has its own \f(CW\*(C`ev__set (watcher *, ...)\*(C'\fR macro -with arguments specific to this watcher type. There is also a macro -to combine initialisation and setting in one call: \f(CW\*(C`ev__init -(watcher *, callback, ...)\*(C'\fR. -.PP -To make the watcher actually watch out for events, you have to start it -with a watcher-specific start function (\f(CW\*(C`ev__start (loop, watcher -*)\*(C'\fR), and you can stop watching for events at any time by calling the -corresponding stop function (\f(CW\*(C`ev__stop (loop, watcher *)\*(C'\fR. -.PP -As long as your watcher is active (has been started but not stopped) you -must not touch the values stored in it. Most specifically you must never -reinitialise it or call its \f(CW\*(C`set\*(C'\fR macro. -.PP -Each and every callback receives the event loop pointer as first, the -registered watcher structure as second, and a bitset of received events as -third argument. -.PP -The received events usually include a single bit per event type received -(you can receive multiple events at the same time). The possible bit masks -are: -.ie n .IP """EV_READ""" 4 -.el .IP "\f(CWEV_READ\fR" 4 -.IX Item "EV_READ" -.PD 0 -.ie n .IP """EV_WRITE""" 4 -.el .IP "\f(CWEV_WRITE\fR" 4 -.IX Item "EV_WRITE" -.PD -The file descriptor in the \f(CW\*(C`ev_io\*(C'\fR watcher has become readable and/or -writable. -.ie n .IP """EV_TIMEOUT""" 4 -.el .IP "\f(CWEV_TIMEOUT\fR" 4 -.IX Item "EV_TIMEOUT" -The \f(CW\*(C`ev_timer\*(C'\fR watcher has timed out. -.ie n .IP """EV_PERIODIC""" 4 -.el .IP "\f(CWEV_PERIODIC\fR" 4 -.IX Item "EV_PERIODIC" -The \f(CW\*(C`ev_periodic\*(C'\fR watcher has timed out. -.ie n .IP """EV_SIGNAL""" 4 -.el .IP "\f(CWEV_SIGNAL\fR" 4 -.IX Item "EV_SIGNAL" -The signal specified in the \f(CW\*(C`ev_signal\*(C'\fR watcher has been received by a thread. -.ie n .IP """EV_CHILD""" 4 -.el .IP "\f(CWEV_CHILD\fR" 4 -.IX Item "EV_CHILD" -The pid specified in the \f(CW\*(C`ev_child\*(C'\fR watcher has received a status change. -.ie n .IP """EV_STAT""" 4 -.el .IP "\f(CWEV_STAT\fR" 4 -.IX Item "EV_STAT" -The path specified in the \f(CW\*(C`ev_stat\*(C'\fR watcher changed its attributes somehow. -.ie n .IP """EV_IDLE""" 4 -.el .IP "\f(CWEV_IDLE\fR" 4 -.IX Item "EV_IDLE" -The \f(CW\*(C`ev_idle\*(C'\fR watcher has determined that you have nothing better to do. -.ie n .IP """EV_PREPARE""" 4 -.el .IP "\f(CWEV_PREPARE\fR" 4 -.IX Item "EV_PREPARE" -.PD 0 -.ie n .IP """EV_CHECK""" 4 -.el .IP "\f(CWEV_CHECK\fR" 4 -.IX Item "EV_CHECK" -.PD -All \f(CW\*(C`ev_prepare\*(C'\fR watchers are invoked just \fIbefore\fR \f(CW\*(C`ev_loop\*(C'\fR starts -to gather new events, and all \f(CW\*(C`ev_check\*(C'\fR watchers are invoked just after -\&\f(CW\*(C`ev_loop\*(C'\fR has gathered them, but before it invokes any callbacks for any -received events. Callbacks of both watcher types can start and stop as -many watchers as they want, and all of them will be taken into account -(for example, a \f(CW\*(C`ev_prepare\*(C'\fR watcher might start an idle watcher to keep -\&\f(CW\*(C`ev_loop\*(C'\fR from blocking). -.ie n .IP """EV_EMBED""" 4 -.el .IP "\f(CWEV_EMBED\fR" 4 -.IX Item "EV_EMBED" -The embedded event loop specified in the \f(CW\*(C`ev_embed\*(C'\fR watcher needs attention. -.ie n .IP """EV_FORK""" 4 -.el .IP "\f(CWEV_FORK\fR" 4 -.IX Item "EV_FORK" -The event loop has been resumed in the child process after fork (see -\&\f(CW\*(C`ev_fork\*(C'\fR). -.ie n .IP """EV_ASYNC""" 4 -.el .IP "\f(CWEV_ASYNC\fR" 4 -.IX Item "EV_ASYNC" -The given async watcher has been asynchronously notified (see \f(CW\*(C`ev_async\*(C'\fR). -.ie n .IP """EV_ERROR""" 4 -.el .IP "\f(CWEV_ERROR\fR" 4 -.IX Item "EV_ERROR" -An unspecified error has occured, the watcher has been stopped. This might -happen because the watcher could not be properly started because libev -ran out of memory, a file descriptor was found to be closed or any other -problem. You best act on it by reporting the problem and somehow coping -with the watcher being stopped. -.Sp -Libev will usually signal a few \*(L"dummy\*(R" events together with an error, -for example it might indicate that a fd is readable or writable, and if -your callbacks is well-written it can just attempt the operation and cope -with the error from \fIread()\fR or \fIwrite()\fR. This will not work in multithreaded -programs, though, so beware. -.Sh "\s-1GENERIC\s0 \s-1WATCHER\s0 \s-1FUNCTIONS\s0" -.IX Subsection "GENERIC WATCHER FUNCTIONS" -In the following description, \f(CW\*(C`TYPE\*(C'\fR stands for the watcher type, -e.g. \f(CW\*(C`timer\*(C'\fR for \f(CW\*(C`ev_timer\*(C'\fR watchers and \f(CW\*(C`io\*(C'\fR for \f(CW\*(C`ev_io\*(C'\fR watchers. -.ie n .IP """ev_init"" (ev_TYPE *watcher, callback)" 4 -.el .IP "\f(CWev_init\fR (ev_TYPE *watcher, callback)" 4 -.IX Item "ev_init (ev_TYPE *watcher, callback)" -This macro initialises the generic portion of a watcher. The contents -of the watcher object can be arbitrary (so \f(CW\*(C`malloc\*(C'\fR will do). Only -the generic parts of the watcher are initialised, you \fIneed\fR to call -the type-specific \f(CW\*(C`ev_TYPE_set\*(C'\fR macro afterwards to initialise the -type-specific parts. For each type there is also a \f(CW\*(C`ev_TYPE_init\*(C'\fR macro -which rolls both calls into one. -.Sp -You can reinitialise a watcher at any time as long as it has been stopped -(or never started) and there are no pending events outstanding. -.Sp -The callback is always of type \f(CW\*(C`void (*)(ev_loop *loop, ev_TYPE *watcher, -int revents)\*(C'\fR. -.ie n .IP """ev_TYPE_set"" (ev_TYPE *, [args])" 4 -.el .IP "\f(CWev_TYPE_set\fR (ev_TYPE *, [args])" 4 -.IX Item "ev_TYPE_set (ev_TYPE *, [args])" -This macro initialises the type-specific parts of a watcher. You need to -call \f(CW\*(C`ev_init\*(C'\fR at least once before you call this macro, but you can -call \f(CW\*(C`ev_TYPE_set\*(C'\fR any number of times. You must not, however, call this -macro on a watcher that is active (it can be pending, however, which is a -difference to the \f(CW\*(C`ev_init\*(C'\fR macro). -.Sp -Although some watcher types do not have type-specific arguments -(e.g. \f(CW\*(C`ev_prepare\*(C'\fR) you still need to call its \f(CW\*(C`set\*(C'\fR macro. -.ie n .IP """ev_TYPE_init"" (ev_TYPE *watcher, callback, [args])" 4 -.el .IP "\f(CWev_TYPE_init\fR (ev_TYPE *watcher, callback, [args])" 4 -.IX Item "ev_TYPE_init (ev_TYPE *watcher, callback, [args])" -This convinience macro rolls both \f(CW\*(C`ev_init\*(C'\fR and \f(CW\*(C`ev_TYPE_set\*(C'\fR macro -calls into a single call. This is the most convinient method to initialise -a watcher. The same limitations apply, of course. -.ie n .IP """ev_TYPE_start"" (loop *, ev_TYPE *watcher)" 4 -.el .IP "\f(CWev_TYPE_start\fR (loop *, ev_TYPE *watcher)" 4 -.IX Item "ev_TYPE_start (loop *, ev_TYPE *watcher)" -Starts (activates) the given watcher. Only active watchers will receive -events. If the watcher is already active nothing will happen. -.ie n .IP """ev_TYPE_stop"" (loop *, ev_TYPE *watcher)" 4 -.el .IP "\f(CWev_TYPE_stop\fR (loop *, ev_TYPE *watcher)" 4 -.IX Item "ev_TYPE_stop (loop *, ev_TYPE *watcher)" -Stops the given watcher again (if active) and clears the pending -status. It is possible that stopped watchers are pending (for example, -non-repeating timers are being stopped when they become pending), but -\&\f(CW\*(C`ev_TYPE_stop\*(C'\fR ensures that the watcher is neither active nor pending. If -you want to free or reuse the memory used by the watcher it is therefore a -good idea to always call its \f(CW\*(C`ev_TYPE_stop\*(C'\fR function. -.IP "bool ev_is_active (ev_TYPE *watcher)" 4 -.IX Item "bool ev_is_active (ev_TYPE *watcher)" -Returns a true value iff the watcher is active (i.e. it has been started -and not yet been stopped). As long as a watcher is active you must not modify -it. -.IP "bool ev_is_pending (ev_TYPE *watcher)" 4 -.IX Item "bool ev_is_pending (ev_TYPE *watcher)" -Returns a true value iff the watcher is pending, (i.e. it has outstanding -events but its callback has not yet been invoked). As long as a watcher -is pending (but not active) you must not call an init function on it (but -\&\f(CW\*(C`ev_TYPE_set\*(C'\fR is safe), you must not change its priority, and you must -make sure the watcher is available to libev (e.g. you cannot \f(CW\*(C`free ()\*(C'\fR -it). -.IP "callback ev_cb (ev_TYPE *watcher)" 4 -.IX Item "callback ev_cb (ev_TYPE *watcher)" -Returns the callback currently set on the watcher. -.IP "ev_cb_set (ev_TYPE *watcher, callback)" 4 -.IX Item "ev_cb_set (ev_TYPE *watcher, callback)" -Change the callback. You can change the callback at virtually any time -(modulo threads). -.IP "ev_set_priority (ev_TYPE *watcher, priority)" 4 -.IX Item "ev_set_priority (ev_TYPE *watcher, priority)" -.PD 0 -.IP "int ev_priority (ev_TYPE *watcher)" 4 -.IX Item "int ev_priority (ev_TYPE *watcher)" -.PD -Set and query the priority of the watcher. The priority is a small -integer between \f(CW\*(C`EV_MAXPRI\*(C'\fR (default: \f(CW2\fR) and \f(CW\*(C`EV_MINPRI\*(C'\fR -(default: \f(CW\*(C`\-2\*(C'\fR). Pending watchers with higher priority will be invoked -before watchers with lower priority, but priority will not keep watchers -from being executed (except for \f(CW\*(C`ev_idle\*(C'\fR watchers). -.Sp -This means that priorities are \fIonly\fR used for ordering callback -invocation after new events have been received. This is useful, for -example, to reduce latency after idling, or more often, to bind two -watchers on the same event and make sure one is called first. -.Sp -If you need to suppress invocation when higher priority events are pending -you need to look at \f(CW\*(C`ev_idle\*(C'\fR watchers, which provide this functionality. -.Sp -You \fImust not\fR change the priority of a watcher as long as it is active or -pending. -.Sp -The default priority used by watchers when no priority has been set is -always \f(CW0\fR, which is supposed to not be too high and not be too low :). -.Sp -Setting a priority outside the range of \f(CW\*(C`EV_MINPRI\*(C'\fR to \f(CW\*(C`EV_MAXPRI\*(C'\fR is -fine, as long as you do not mind that the priority value you query might -or might not have been adjusted to be within valid range. -.IP "ev_invoke (loop, ev_TYPE *watcher, int revents)" 4 -.IX Item "ev_invoke (loop, ev_TYPE *watcher, int revents)" -Invoke the \f(CW\*(C`watcher\*(C'\fR with the given \f(CW\*(C`loop\*(C'\fR and \f(CW\*(C`revents\*(C'\fR. Neither -\&\f(CW\*(C`loop\*(C'\fR nor \f(CW\*(C`revents\*(C'\fR need to be valid as long as the watcher callback -can deal with that fact. -.IP "int ev_clear_pending (loop, ev_TYPE *watcher)" 4 -.IX Item "int ev_clear_pending (loop, ev_TYPE *watcher)" -If the watcher is pending, this function returns clears its pending status -and returns its \f(CW\*(C`revents\*(C'\fR bitset (as if its callback was invoked). If the -watcher isn't pending it does nothing and returns \f(CW0\fR. -.Sh "\s-1ASSOCIATING\s0 \s-1CUSTOM\s0 \s-1DATA\s0 \s-1WITH\s0 A \s-1WATCHER\s0" -.IX Subsection "ASSOCIATING CUSTOM DATA WITH A WATCHER" -Each watcher has, by default, a member \f(CW\*(C`void *data\*(C'\fR that you can change -and read at any time, libev will completely ignore it. This can be used -to associate arbitrary data with your watcher. If you need more data and -don't want to allocate memory and store a pointer to it in that data -member, you can also \*(L"subclass\*(R" the watcher type and provide your own -data: -.PP -.Vb 7 -\& struct my_io -\& { -\& struct ev_io io; -\& int otherfd; -\& void *somedata; -\& struct whatever *mostinteresting; -\& } -.Ve -.PP -And since your callback will be called with a pointer to the watcher, you -can cast it back to your own type: -.PP -.Vb 5 -\& static void my_cb (struct ev_loop *loop, struct ev_io *w_, int revents) -\& { -\& struct my_io *w = (struct my_io *)w_; -\& ... -\& } -.Ve -.PP -More interesting and less C\-conformant ways of casting your callback type -instead have been omitted. -.PP -Another common scenario is having some data structure with multiple -watchers: -.PP -.Vb 6 -\& struct my_biggy -\& { -\& int some_data; -\& ev_timer t1; -\& ev_timer t2; -\& } -.Ve -.PP -In this case getting the pointer to \f(CW\*(C`my_biggy\*(C'\fR is a bit more complicated, -you need to use \f(CW\*(C`offsetof\*(C'\fR: -.PP -.Vb 1 -\& #include -\& -\& static void -\& t1_cb (EV_P_ struct ev_timer *w, int revents) -\& { -\& struct my_biggy big = (struct my_biggy * -\& (((char *)w) \- offsetof (struct my_biggy, t1)); -\& } -\& -\& static void -\& t2_cb (EV_P_ struct ev_timer *w, int revents) -\& { -\& struct my_biggy big = (struct my_biggy * -\& (((char *)w) \- offsetof (struct my_biggy, t2)); -\& } -.Ve -.SH "WATCHER TYPES" -.IX Header "WATCHER TYPES" -This section describes each watcher in detail, but will not repeat -information given in the last section. Any initialisation/set macros, -functions and members specific to the watcher type are explained. -.PP -Members are additionally marked with either \fI[read\-only]\fR, meaning that, -while the watcher is active, you can look at the member and expect some -sensible content, but you must not modify it (you can modify it while the -watcher is stopped to your hearts content), or \fI[read\-write]\fR, which -means you can expect it to have some sensible content while the watcher -is active, but you can also modify it. Modifying it may not do something -sensible or take immediate effect (or do anything at all), but libev will -not crash or malfunction in any way. -.ie n .Sh """ev_io"" \- is this file descriptor readable or writable?" -.el .Sh "\f(CWev_io\fP \- is this file descriptor readable or writable?" -.IX Subsection "ev_io - is this file descriptor readable or writable?" -I/O watchers check whether a file descriptor is readable or writable -in each iteration of the event loop, or, more precisely, when reading -would not block the process and writing would at least be able to write -some data. This behaviour is called level-triggering because you keep -receiving events as long as the condition persists. Remember you can stop -the watcher if you don't want to act on the event and neither want to -receive future events. -.PP -In general you can register as many read and/or write event watchers per -fd as you want (as long as you don't confuse yourself). Setting all file -descriptors to non-blocking mode is also usually a good idea (but not -required if you know what you are doing). -.PP -If you must do this, then force the use of a known-to-be-good backend -(at the time of this writing, this includes only \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR and -\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR). -.PP -Another thing you have to watch out for is that it is quite easy to -receive \*(L"spurious\*(R" readyness notifications, that is your callback might -be called with \f(CW\*(C`EV_READ\*(C'\fR but a subsequent \f(CW\*(C`read\*(C'\fR(2) will actually block -because there is no data. Not only are some backends known to create a -lot of those (for example solaris ports), it is very easy to get into -this situation even with a relatively standard program structure. Thus -it is best to always use non-blocking I/O: An extra \f(CW\*(C`read\*(C'\fR(2) returning -\&\f(CW\*(C`EAGAIN\*(C'\fR is far preferable to a program hanging until some data arrives. -.PP -If you cannot run the fd in non-blocking mode (for example you should not -play around with an Xlib connection), then you have to seperately re-test -whether a file descriptor is really ready with a known-to-be good interface -such as poll (fortunately in our Xlib example, Xlib already does this on -its own, so its quite safe to use). -.PP -\fIThe special problem of disappearing file descriptors\fR -.IX Subsection "The special problem of disappearing file descriptors" -.PP -Some backends (e.g. kqueue, epoll) need to be told about closing a file -descriptor (either by calling \f(CW\*(C`close\*(C'\fR explicitly or by any other means, -such as \f(CW\*(C`dup\*(C'\fR). The reason is that you register interest in some file -descriptor, but when it goes away, the operating system will silently drop -this interest. If another file descriptor with the same number then is -registered with libev, there is no efficient way to see that this is, in -fact, a different file descriptor. -.PP -To avoid having to explicitly tell libev about such cases, libev follows -the following policy: Each time \f(CW\*(C`ev_io_set\*(C'\fR is being called, libev -will assume that this is potentially a new file descriptor, otherwise -it is assumed that the file descriptor stays the same. That means that -you \fIhave\fR to call \f(CW\*(C`ev_io_set\*(C'\fR (or \f(CW\*(C`ev_io_init\*(C'\fR) when you change the -descriptor even if the file descriptor number itself did not change. -.PP -This is how one would do it normally anyway, the important point is that -the libev application should not optimise around libev but should leave -optimisations to libev. -.PP -\fIThe special problem of dup'ed file descriptors\fR -.IX Subsection "The special problem of dup'ed file descriptors" -.PP -Some backends (e.g. epoll), cannot register events for file descriptors, -but only events for the underlying file descriptions. That means when you -have \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors or weirder constellations, and register -events for them, only one file descriptor might actually receive events. -.PP -There is no workaround possible except not registering events -for potentially \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors, or to resort to -\&\f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.PP -\fIThe special problem of fork\fR -.IX Subsection "The special problem of fork" -.PP -Some backends (epoll, kqueue) do not support \f(CW\*(C`fork ()\*(C'\fR at all or exhibit -useless behaviour. Libev fully supports fork, but needs to be told about -it in the child. -.PP -To support fork in your programs, you either have to call -\&\f(CW\*(C`ev_default_fork ()\*(C'\fR or \f(CW\*(C`ev_loop_fork ()\*(C'\fR after a fork in the child, -enable \f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR, or resort to \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or -\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.PP -\fIThe special problem of \s-1SIGPIPE\s0\fR -.IX Subsection "The special problem of SIGPIPE" -.PP -While not really specific to libev, it is easy to forget about \s-1SIGPIPE:\s0 -when reading from a pipe whose other end has been closed, your program -gets send a \s-1SIGPIPE\s0, which, by default, aborts your program. For most -programs this is sensible behaviour, for daemons, this is usually -undesirable. -.PP -So when you encounter spurious, unexplained daemon exits, make sure you -ignore \s-1SIGPIPE\s0 (and maybe make sure you log the exit status of your daemon -somewhere, as that would have given you a big clue). -.PP -\fIWatcher-Specific Functions\fR -.IX Subsection "Watcher-Specific Functions" -.IP "ev_io_init (ev_io *, callback, int fd, int events)" 4 -.IX Item "ev_io_init (ev_io *, callback, int fd, int events)" -.PD 0 -.IP "ev_io_set (ev_io *, int fd, int events)" 4 -.IX Item "ev_io_set (ev_io *, int fd, int events)" -.PD -Configures an \f(CW\*(C`ev_io\*(C'\fR watcher. The \f(CW\*(C`fd\*(C'\fR is the file descriptor to -rceeive events for and events is either \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or -\&\f(CW\*(C`EV_READ | EV_WRITE\*(C'\fR to receive the given events. -.IP "int fd [read\-only]" 4 -.IX Item "int fd [read-only]" -The file descriptor being watched. -.IP "int events [read\-only]" 4 -.IX Item "int events [read-only]" -The events being watched. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Call \f(CW\*(C`stdin_readable_cb\*(C'\fR when \s-1STDIN_FILENO\s0 has become, well -readable, but only once. Since it is likely line-buffered, you could -attempt to read a whole line in the callback. -.PP -.Vb 6 -\& static void -\& stdin_readable_cb (struct ev_loop *loop, struct ev_io *w, int revents) -\& { -\& ev_io_stop (loop, w); -\& .. read from stdin here (or from w\->fd) and haqndle any I/O errors -\& } -\& -\& ... -\& struct ev_loop *loop = ev_default_init (0); -\& struct ev_io stdin_readable; -\& ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ); -\& ev_io_start (loop, &stdin_readable); -\& ev_loop (loop, 0); -.Ve -.ie n .Sh """ev_timer"" \- relative and optionally repeating timeouts" -.el .Sh "\f(CWev_timer\fP \- relative and optionally repeating timeouts" -.IX Subsection "ev_timer - relative and optionally repeating timeouts" -Timer watchers are simple relative timers that generate an event after a -given time, and optionally repeating in regular intervals after that. -.PP -The timers are based on real time, that is, if you register an event that -times out after an hour and you reset your system clock to last years -time, it will still time out after (roughly) and hour. \*(L"Roughly\*(R" because -detecting time jumps is hard, and some inaccuracies are unavoidable (the -monotonic clock option helps a lot here). -.PP -The relative timeouts are calculated relative to the \f(CW\*(C`ev_now ()\*(C'\fR -time. This is usually the right thing as this timestamp refers to the time -of the event triggering whatever timeout you are modifying/starting. If -you suspect event processing to be delayed and you \fIneed\fR to base the timeout -on the current time, use something like this to adjust for this: -.PP -.Vb 1 -\& ev_timer_set (&timer, after + ev_now () \- ev_time (), 0.); -.Ve -.PP -The callback is guarenteed to be invoked only when its timeout has passed, -but if multiple timers become ready during the same loop iteration then -order of execution is undefined. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" 4 -.IX Item "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" -.PD 0 -.IP "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" 4 -.IX Item "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" -.PD -Configure the timer to trigger after \f(CW\*(C`after\*(C'\fR seconds. If \f(CW\*(C`repeat\*(C'\fR is -\&\f(CW0.\fR, then it will automatically be stopped. If it is positive, then the -timer will automatically be configured to trigger again \f(CW\*(C`repeat\*(C'\fR seconds -later, again, and again, until stopped manually. -.Sp -The timer itself will do a best-effort at avoiding drift, that is, if you -configure a timer to trigger every 10 seconds, then it will trigger at -exactly 10 second intervals. If, however, your program cannot keep up with -the timer (because it takes longer than those 10 seconds to do stuff) the -timer will not fire more than once per event loop iteration. -.IP "ev_timer_again (loop, ev_timer *)" 4 -.IX Item "ev_timer_again (loop, ev_timer *)" -This will act as if the timer timed out and restart it again if it is -repeating. The exact semantics are: -.Sp -If the timer is pending, its pending status is cleared. -.Sp -If the timer is started but nonrepeating, stop it (as if it timed out). -.Sp -If the timer is repeating, either start it if necessary (with the -\&\f(CW\*(C`repeat\*(C'\fR value), or reset the running timer to the \f(CW\*(C`repeat\*(C'\fR value. -.Sp -This sounds a bit complicated, but here is a useful and typical -example: Imagine you have a tcp connection and you want a so-called idle -timeout, that is, you want to be called when there have been, say, 60 -seconds of inactivity on the socket. The easiest way to do this is to -configure an \f(CW\*(C`ev_timer\*(C'\fR with a \f(CW\*(C`repeat\*(C'\fR value of \f(CW60\fR and then call -\&\f(CW\*(C`ev_timer_again\*(C'\fR each time you successfully read or write some data. If -you go into an idle state where you do not expect data to travel on the -socket, you can \f(CW\*(C`ev_timer_stop\*(C'\fR the timer, and \f(CW\*(C`ev_timer_again\*(C'\fR will -automatically restart it if need be. -.Sp -That means you can ignore the \f(CW\*(C`after\*(C'\fR value and \f(CW\*(C`ev_timer_start\*(C'\fR -altogether and only ever use the \f(CW\*(C`repeat\*(C'\fR value and \f(CW\*(C`ev_timer_again\*(C'\fR: -.Sp -.Vb 8 -\& ev_timer_init (timer, callback, 0., 5.); -\& ev_timer_again (loop, timer); -\& ... -\& timer\->again = 17.; -\& ev_timer_again (loop, timer); -\& ... -\& timer\->again = 10.; -\& ev_timer_again (loop, timer); -.Ve -.Sp -This is more slightly efficient then stopping/starting the timer each time -you want to modify its timeout value. -.IP "ev_tstamp repeat [read\-write]" 4 -.IX Item "ev_tstamp repeat [read-write]" -The current \f(CW\*(C`repeat\*(C'\fR value. Will be used each time the watcher times out -or \f(CW\*(C`ev_timer_again\*(C'\fR is called and determines the next timeout (if any), -which is also when any modifications are taken into account. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Create a timer that fires after 60 seconds. -.PP -.Vb 5 -\& static void -\& one_minute_cb (struct ev_loop *loop, struct ev_timer *w, int revents) -\& { -\& .. one minute over, w is actually stopped right here -\& } -\& -\& struct ev_timer mytimer; -\& ev_timer_init (&mytimer, one_minute_cb, 60., 0.); -\& ev_timer_start (loop, &mytimer); -.Ve -.PP -Example: Create a timeout timer that times out after 10 seconds of -inactivity. -.PP -.Vb 5 -\& static void -\& timeout_cb (struct ev_loop *loop, struct ev_timer *w, int revents) -\& { -\& .. ten seconds without any activity -\& } -\& -\& struct ev_timer mytimer; -\& ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */ -\& ev_timer_again (&mytimer); /* start timer */ -\& ev_loop (loop, 0); -\& -\& // and in some piece of code that gets executed on any "activity": -\& // reset the timeout to start ticking again at 10 seconds -\& ev_timer_again (&mytimer); -.Ve -.ie n .Sh """ev_periodic"" \- to cron or not to cron?" -.el .Sh "\f(CWev_periodic\fP \- to cron or not to cron?" -.IX Subsection "ev_periodic - to cron or not to cron?" -Periodic watchers are also timers of a kind, but they are very versatile -(and unfortunately a bit complex). -.PP -Unlike \f(CW\*(C`ev_timer\*(C'\fR's, they are not based on real time (or relative time) -but on wallclock time (absolute time). You can tell a periodic watcher -to trigger \*(L"at\*(R" some specific point in time. For example, if you tell a -periodic watcher to trigger in 10 seconds (by specifiying e.g. \f(CW\*(C`ev_now () -+ 10.\*(C'\fR) and then reset your system clock to the last year, then it will -take a year to trigger the event (unlike an \f(CW\*(C`ev_timer\*(C'\fR, which would trigger -roughly 10 seconds later). -.PP -They can also be used to implement vastly more complex timers, such as -triggering an event on each midnight, local time or other, complicated, -rules. -.PP -As with timers, the callback is guarenteed to be invoked only when the -time (\f(CW\*(C`at\*(C'\fR) has been passed, but if multiple periodic timers become ready -during the same loop iteration then order of execution is undefined. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_periodic_init (ev_periodic *, callback, ev_tstamp at, ev_tstamp interval, reschedule_cb)" 4 -.IX Item "ev_periodic_init (ev_periodic *, callback, ev_tstamp at, ev_tstamp interval, reschedule_cb)" -.PD 0 -.IP "ev_periodic_set (ev_periodic *, ev_tstamp after, ev_tstamp repeat, reschedule_cb)" 4 -.IX Item "ev_periodic_set (ev_periodic *, ev_tstamp after, ev_tstamp repeat, reschedule_cb)" -.PD -Lots of arguments, lets sort it out... There are basically three modes of -operation, and we will explain them from simplest to complex: -.RS 4 -.IP "\(bu" 4 -absolute timer (at = time, interval = reschedule_cb = 0) -.Sp -In this configuration the watcher triggers an event at the wallclock time -\&\f(CW\*(C`at\*(C'\fR and doesn't repeat. It will not adjust when a time jump occurs, -that is, if it is to be run at January 1st 2011 then it will run when the -system time reaches or surpasses this time. -.IP "\(bu" 4 -repeating interval timer (at = offset, interval > 0, reschedule_cb = 0) -.Sp -In this mode the watcher will always be scheduled to time out at the next -\&\f(CW\*(C`at + N * interval\*(C'\fR time (for some integer N, which can also be negative) -and then repeat, regardless of any time jumps. -.Sp -This can be used to create timers that do not drift with respect to system -time: -.Sp -.Vb 1 -\& ev_periodic_set (&periodic, 0., 3600., 0); -.Ve -.Sp -This doesn't mean there will always be 3600 seconds in between triggers, -but only that the the callback will be called when the system time shows a -full hour (\s-1UTC\s0), or more correctly, when the system time is evenly divisible -by 3600. -.Sp -Another way to think about it (for the mathematically inclined) is that -\&\f(CW\*(C`ev_periodic\*(C'\fR will try to run the callback in this mode at the next possible -time where \f(CW\*(C`time = at (mod interval)\*(C'\fR, regardless of any time jumps. -.Sp -For numerical stability it is preferable that the \f(CW\*(C`at\*(C'\fR value is near -\&\f(CW\*(C`ev_now ()\*(C'\fR (the current time), but there is no range requirement for -this value. -.IP "\(bu" 4 -manual reschedule mode (at and interval ignored, reschedule_cb = callback) -.Sp -In this mode the values for \f(CW\*(C`interval\*(C'\fR and \f(CW\*(C`at\*(C'\fR are both being -ignored. Instead, each time the periodic watcher gets scheduled, the -reschedule callback will be called with the watcher as first, and the -current time as second argument. -.Sp -\&\s-1NOTE:\s0 \fIThis callback \s-1MUST\s0 \s-1NOT\s0 stop or destroy any periodic watcher, -ever, or make any event loop modifications\fR. If you need to stop it, -return \f(CW\*(C`now + 1e30\*(C'\fR (or so, fudge fudge) and stop it afterwards (e.g. by -starting an \f(CW\*(C`ev_prepare\*(C'\fR watcher, which is legal). -.Sp -Its prototype is \f(CW\*(C`ev_tstamp (*reschedule_cb)(struct ev_periodic *w, -ev_tstamp now)\*(C'\fR, e.g.: -.Sp -.Vb 4 -\& static ev_tstamp my_rescheduler (struct ev_periodic *w, ev_tstamp now) -\& { -\& return now + 60.; -\& } -.Ve -.Sp -It must return the next time to trigger, based on the passed time value -(that is, the lowest time value larger than to the second argument). It -will usually be called just before the callback will be triggered, but -might be called at other times, too. -.Sp -\&\s-1NOTE:\s0 \fIThis callback must always return a time that is later than the -passed \f(CI\*(C`now\*(C'\fI value\fR. Not even \f(CW\*(C`now\*(C'\fR itself will do, it \fImust\fR be larger. -.Sp -This can be used to create very complex timers, such as a timer that -triggers on each midnight, local time. To do this, you would calculate the -next midnight after \f(CW\*(C`now\*(C'\fR and return the timestamp value for this. How -you do this is, again, up to you (but it is not trivial, which is the main -reason I omitted it as an example). -.RE -.RS 4 -.RE -.IP "ev_periodic_again (loop, ev_periodic *)" 4 -.IX Item "ev_periodic_again (loop, ev_periodic *)" -Simply stops and restarts the periodic watcher again. This is only useful -when you changed some parameters or the reschedule callback would return -a different time than the last time it was called (e.g. in a crond like -program when the crontabs have changed). -.IP "ev_tstamp ev_periodic_at (ev_periodic *)" 4 -.IX Item "ev_tstamp ev_periodic_at (ev_periodic *)" -When active, returns the absolute time that the watcher is supposed to -trigger next. -.IP "ev_tstamp offset [read\-write]" 4 -.IX Item "ev_tstamp offset [read-write]" -When repeating, this contains the offset value, otherwise this is the -absolute point in time (the \f(CW\*(C`at\*(C'\fR value passed to \f(CW\*(C`ev_periodic_set\*(C'\fR). -.Sp -Can be modified any time, but changes only take effect when the periodic -timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called. -.IP "ev_tstamp interval [read\-write]" 4 -.IX Item "ev_tstamp interval [read-write]" -The current interval value. Can be modified any time, but changes only -take effect when the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being -called. -.IP "ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) [read\-write]" 4 -.IX Item "ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) [read-write]" -The current reschedule callback, or \f(CW0\fR, if this functionality is -switched off. Can be changed any time, but changes only take effect when -the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Call a callback every hour, or, more precisely, whenever the -system clock is divisible by 3600. The callback invocation times have -potentially a lot of jittering, but good long-term stability. -.PP -.Vb 5 -\& static void -\& clock_cb (struct ev_loop *loop, struct ev_io *w, int revents) -\& { -\& ... its now a full hour (UTC, or TAI or whatever your clock follows) -\& } -\& -\& struct ev_periodic hourly_tick; -\& ev_periodic_init (&hourly_tick, clock_cb, 0., 3600., 0); -\& ev_periodic_start (loop, &hourly_tick); -.Ve -.PP -Example: The same as above, but use a reschedule callback to do it: -.PP -.Vb 1 -\& #include -\& -\& static ev_tstamp -\& my_scheduler_cb (struct ev_periodic *w, ev_tstamp now) -\& { -\& return fmod (now, 3600.) + 3600.; -\& } -\& -\& ev_periodic_init (&hourly_tick, clock_cb, 0., 0., my_scheduler_cb); -.Ve -.PP -Example: Call a callback every hour, starting now: -.PP -.Vb 4 -\& struct ev_periodic hourly_tick; -\& ev_periodic_init (&hourly_tick, clock_cb, -\& fmod (ev_now (loop), 3600.), 3600., 0); -\& ev_periodic_start (loop, &hourly_tick); -.Ve -.ie n .Sh """ev_signal"" \- signal me when a signal gets signalled!" -.el .Sh "\f(CWev_signal\fP \- signal me when a signal gets signalled!" -.IX Subsection "ev_signal - signal me when a signal gets signalled!" -Signal watchers will trigger an event when the process receives a specific -signal one or more times. Even though signals are very asynchronous, libev -will try it's best to deliver signals synchronously, i.e. as part of the -normal event processing, like any other event. -.PP -You can configure as many watchers as you like per signal. Only when the -first watcher gets started will libev actually register a signal watcher -with the kernel (thus it coexists with your own signal handlers as long -as you don't register any with libev). Similarly, when the last signal -watcher for a signal is stopped libev will reset the signal handler to -\&\s-1SIG_DFL\s0 (regardless of what it was set to before). -.PP -If possible and supported, libev will install its handlers with -\&\f(CW\*(C`SA_RESTART\*(C'\fR behaviour enabled, so syscalls should not be unduly -interrupted. If you have a problem with syscalls getting interrupted by -signals you can block all signals in an \f(CW\*(C`ev_check\*(C'\fR watcher and unblock -them in an \f(CW\*(C`ev_prepare\*(C'\fR watcher. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_signal_init (ev_signal *, callback, int signum)" 4 -.IX Item "ev_signal_init (ev_signal *, callback, int signum)" -.PD 0 -.IP "ev_signal_set (ev_signal *, int signum)" 4 -.IX Item "ev_signal_set (ev_signal *, int signum)" -.PD -Configures the watcher to trigger on the given signal number (usually one -of the \f(CW\*(C`SIGxxx\*(C'\fR constants). -.IP "int signum [read\-only]" 4 -.IX Item "int signum [read-only]" -The signal the watcher watches out for. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Try to exit cleanly on \s-1SIGINT\s0 and \s-1SIGTERM\s0. -.PP -.Vb 5 -\& static void -\& sigint_cb (struct ev_loop *loop, struct ev_signal *w, int revents) -\& { -\& ev_unloop (loop, EVUNLOOP_ALL); -\& } -\& -\& struct ev_signal signal_watcher; -\& ev_signal_init (&signal_watcher, sigint_cb, SIGINT); -\& ev_signal_start (loop, &sigint_cb); -.Ve -.ie n .Sh """ev_child"" \- watch out for process status changes" -.el .Sh "\f(CWev_child\fP \- watch out for process status changes" -.IX Subsection "ev_child - watch out for process status changes" -Child watchers trigger when your process receives a \s-1SIGCHLD\s0 in response to -some child status changes (most typically when a child of yours dies). It -is permissible to install a child watcher \fIafter\fR the child has been -forked (which implies it might have already exited), as long as the event -loop isn't entered (or is continued from a watcher). -.PP -Only the default event loop is capable of handling signals, and therefore -you can only rgeister child watchers in the default event loop. -.PP -\fIProcess Interaction\fR -.IX Subsection "Process Interaction" -.PP -Libev grabs \f(CW\*(C`SIGCHLD\*(C'\fR as soon as the default event loop is -initialised. This is necessary to guarantee proper behaviour even if -the first child watcher is started after the child exits. The occurance -of \f(CW\*(C`SIGCHLD\*(C'\fR is recorded asynchronously, but child reaping is done -synchronously as part of the event loop processing. Libev always reaps all -children, even ones not watched. -.PP -\fIOverriding the Built-In Processing\fR -.IX Subsection "Overriding the Built-In Processing" -.PP -Libev offers no special support for overriding the built-in child -processing, but if your application collides with libev's default child -handler, you can override it easily by installing your own handler for -\&\f(CW\*(C`SIGCHLD\*(C'\fR after initialising the default loop, and making sure the -default loop never gets destroyed. You are encouraged, however, to use an -event-based approach to child reaping and thus use libev's support for -that, so other libev users can use \f(CW\*(C`ev_child\*(C'\fR watchers freely. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_child_init (ev_child *, callback, int pid, int trace)" 4 -.IX Item "ev_child_init (ev_child *, callback, int pid, int trace)" -.PD 0 -.IP "ev_child_set (ev_child *, int pid, int trace)" 4 -.IX Item "ev_child_set (ev_child *, int pid, int trace)" -.PD -Configures the watcher to wait for status changes of process \f(CW\*(C`pid\*(C'\fR (or -\&\fIany\fR process if \f(CW\*(C`pid\*(C'\fR is specified as \f(CW0\fR). The callback can look -at the \f(CW\*(C`rstatus\*(C'\fR member of the \f(CW\*(C`ev_child\*(C'\fR watcher structure to see -the status word (use the macros from \f(CW\*(C`sys/wait.h\*(C'\fR and see your systems -\&\f(CW\*(C`waitpid\*(C'\fR documentation). The \f(CW\*(C`rpid\*(C'\fR member contains the pid of the -process causing the status change. \f(CW\*(C`trace\*(C'\fR must be either \f(CW0\fR (only -activate the watcher when the process terminates) or \f(CW1\fR (additionally -activate the watcher when the process is stopped or continued). -.IP "int pid [read\-only]" 4 -.IX Item "int pid [read-only]" -The process id this watcher watches out for, or \f(CW0\fR, meaning any process id. -.IP "int rpid [read\-write]" 4 -.IX Item "int rpid [read-write]" -The process id that detected a status change. -.IP "int rstatus [read\-write]" 4 -.IX Item "int rstatus [read-write]" -The process exit/trace status caused by \f(CW\*(C`rpid\*(C'\fR (see your systems -\&\f(CW\*(C`waitpid\*(C'\fR and \f(CW\*(C`sys/wait.h\*(C'\fR documentation for details). -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: \f(CW\*(C`fork()\*(C'\fR a new process and install a child handler to wait for -its completion. -.PP -.Vb 1 -\& ev_child cw; -\& -\& static void -\& child_cb (EV_P_ struct ev_child *w, int revents) -\& { -\& ev_child_stop (EV_A_ w); -\& printf ("process %d exited with status %x\en", w\->rpid, w\->rstatus); -\& } -\& -\& pid_t pid = fork (); -\& -\& if (pid < 0) -\& // error -\& else if (pid == 0) -\& { -\& // the forked child executes here -\& exit (1); -\& } -\& else -\& { -\& ev_child_init (&cw, child_cb, pid, 0); -\& ev_child_start (EV_DEFAULT_ &cw); -\& } -.Ve -.ie n .Sh """ev_stat"" \- did the file attributes just change?" -.el .Sh "\f(CWev_stat\fP \- did the file attributes just change?" -.IX Subsection "ev_stat - did the file attributes just change?" -This watches a filesystem path for attribute changes. That is, it calls -\&\f(CW\*(C`stat\*(C'\fR regularly (or when the \s-1OS\s0 says it changed) and sees if it changed -compared to the last time, invoking the callback if it did. -.PP -The path does not need to exist: changing from \*(L"path exists\*(R" to \*(L"path does -not exist\*(R" is a status change like any other. The condition \*(L"path does -not exist\*(R" is signified by the \f(CW\*(C`st_nlink\*(C'\fR field being zero (which is -otherwise always forced to be at least one) and all the other fields of -the stat buffer having unspecified contents. -.PP -The path \fIshould\fR be absolute and \fImust not\fR end in a slash. If it is -relative and your working directory changes, the behaviour is undefined. -.PP -Since there is no standard to do this, the portable implementation simply -calls \f(CW\*(C`stat (2)\*(C'\fR regularly on the path to see if it changed somehow. You -can specify a recommended polling interval for this case. If you specify -a polling interval of \f(CW0\fR (highly recommended!) then a \fIsuitable, -unspecified default\fR value will be used (which you can expect to be around -five seconds, although this might change dynamically). Libev will also -impose a minimum interval which is currently around \f(CW0.1\fR, but thats -usually overkill. -.PP -This watcher type is not meant for massive numbers of stat watchers, -as even with OS-supported change notifications, this can be -resource-intensive. -.PP -At the time of this writing, only the Linux inotify interface is -implemented (implementing kqueue support is left as an exercise for the -reader, note, however, that the author sees no way of implementing ev_stat -semantics with kqueue). Inotify will be used to give hints only and should -not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers, which means that libev -sometimes needs to fall back to regular polling again even with inotify, -but changes are usually detected immediately, and if the file exists there -will be no polling. -.PP -\fI\s-1ABI\s0 Issues (Largefile Support)\fR -.IX Subsection "ABI Issues (Largefile Support)" -.PP -Libev by default (unless the user overrides this) uses the default -compilation environment, which means that on systems with optionally -disabled large file support, you get the 32 bit version of the stat -structure. When using the library from programs that change the \s-1ABI\s0 to -use 64 bit file offsets the programs will fail. In that case you have to -compile libev with the same flags to get binary compatibility. This is -obviously the case with any flags that change the \s-1ABI\s0, but the problem is -most noticably with ev_stat and largefile support. -.PP -\fIInotify\fR -.IX Subsection "Inotify" -.PP -When \f(CW\*(C`inotify (7)\*(C'\fR support has been compiled into libev (generally only -available on Linux) and present at runtime, it will be used to speed up -change detection where possible. The inotify descriptor will be created lazily -when the first \f(CW\*(C`ev_stat\*(C'\fR watcher is being started. -.PP -Inotify presence does not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers -except that changes might be detected earlier, and in some cases, to avoid -making regular \f(CW\*(C`stat\*(C'\fR calls. Even in the presence of inotify support -there are many cases where libev has to resort to regular \f(CW\*(C`stat\*(C'\fR polling. -.PP -(There is no support for kqueue, as apparently it cannot be used to -implement this functionality, due to the requirement of having a file -descriptor open on the object at all times). -.PP -\fIThe special problem of stat time resolution\fR -.IX Subsection "The special problem of stat time resolution" -.PP -The \f(CW\*(C`stat ()\*(C'\fR syscall only supports full-second resolution portably, and -even on systems where the resolution is higher, many filesystems still -only support whole seconds. -.PP -That means that, if the time is the only thing that changes, you can -easily miss updates: on the first update, \f(CW\*(C`ev_stat\*(C'\fR detects a change and -calls your callback, which does something. When there is another update -within the same second, \f(CW\*(C`ev_stat\*(C'\fR will be unable to detect it as the stat -data does not change. -.PP -The solution to this is to delay acting on a change for slightly more -than second (or till slightly after the next full second boundary), using -a roughly one-second-delay \f(CW\*(C`ev_timer\*(C'\fR (e.g. \f(CW\*(C`ev_timer_set (w, 0., 1.02); -ev_timer_again (loop, w)\*(C'\fR). -.PP -The \f(CW.02\fR offset is added to work around small timing inconsistencies -of some operating systems (where the second counter of the current time -might be be delayed. One such system is the Linux kernel, where a call to -\&\f(CW\*(C`gettimeofday\*(C'\fR might return a timestamp with a full second later than -a subsequent \f(CW\*(C`time\*(C'\fR call \- if the equivalent of \f(CW\*(C`time ()\*(C'\fR is used to -update file times then there will be a small window where the kernel uses -the previous second to update file times but libev might already execute -the timer callback). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" 4 -.IX Item "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" -.PD 0 -.IP "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" 4 -.IX Item "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" -.PD -Configures the watcher to wait for status changes of the given -\&\f(CW\*(C`path\*(C'\fR. The \f(CW\*(C`interval\*(C'\fR is a hint on how quickly a change is expected to -be detected and should normally be specified as \f(CW0\fR to let libev choose -a suitable value. The memory pointed to by \f(CW\*(C`path\*(C'\fR must point to the same -path for as long as the watcher is active. -.Sp -The callback will receive \f(CW\*(C`EV_STAT\*(C'\fR when a change was detected, relative -to the attributes at the time the watcher was started (or the last change -was detected). -.IP "ev_stat_stat (loop, ev_stat *)" 4 -.IX Item "ev_stat_stat (loop, ev_stat *)" -Updates the stat buffer immediately with new values. If you change the -watched path in your callback, you could call this function to avoid -detecting this change (while introducing a race condition if you are not -the only one changing the path). Can also be useful simply to find out the -new values. -.IP "ev_statdata attr [read\-only]" 4 -.IX Item "ev_statdata attr [read-only]" -The most-recently detected attributes of the file. Although the type is -\&\f(CW\*(C`ev_statdata\*(C'\fR, this is usually the (or one of the) \f(CW\*(C`struct stat\*(C'\fR types -suitable for your system, but you can only rely on the POSIX-standardised -members to be present. If the \f(CW\*(C`st_nlink\*(C'\fR member is \f(CW0\fR, then there was -some error while \f(CW\*(C`stat\*(C'\fRing the file. -.IP "ev_statdata prev [read\-only]" 4 -.IX Item "ev_statdata prev [read-only]" -The previous attributes of the file. The callback gets invoked whenever -\&\f(CW\*(C`prev\*(C'\fR != \f(CW\*(C`attr\*(C'\fR, or, more precisely, one or more of these members -differ: \f(CW\*(C`st_dev\*(C'\fR, \f(CW\*(C`st_ino\*(C'\fR, \f(CW\*(C`st_mode\*(C'\fR, \f(CW\*(C`st_nlink\*(C'\fR, \f(CW\*(C`st_uid\*(C'\fR, -\&\f(CW\*(C`st_gid\*(C'\fR, \f(CW\*(C`st_rdev\*(C'\fR, \f(CW\*(C`st_size\*(C'\fR, \f(CW\*(C`st_atime\*(C'\fR, \f(CW\*(C`st_mtime\*(C'\fR, \f(CW\*(C`st_ctime\*(C'\fR. -.IP "ev_tstamp interval [read\-only]" 4 -.IX Item "ev_tstamp interval [read-only]" -The specified interval. -.IP "const char *path [read\-only]" 4 -.IX Item "const char *path [read-only]" -The filesystem path that is being watched. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Watch \f(CW\*(C`/etc/passwd\*(C'\fR for attribute changes. -.PP -.Vb 10 -\& static void -\& passwd_cb (struct ev_loop *loop, ev_stat *w, int revents) -\& { -\& /* /etc/passwd changed in some way */ -\& if (w\->attr.st_nlink) -\& { -\& printf ("passwd current size %ld\en", (long)w\->attr.st_size); -\& printf ("passwd current atime %ld\en", (long)w\->attr.st_mtime); -\& printf ("passwd current mtime %ld\en", (long)w\->attr.st_mtime); -\& } -\& else -\& /* you shalt not abuse printf for puts */ -\& puts ("wow, /etc/passwd is not there, expect problems. " -\& "if this is windows, they already arrived\en"); -\& } -\& -\& ... -\& ev_stat passwd; -\& -\& ev_stat_init (&passwd, passwd_cb, "/etc/passwd", 0.); -\& ev_stat_start (loop, &passwd); -.Ve -.PP -Example: Like above, but additionally use a one-second delay so we do not -miss updates (however, frequent updates will delay processing, too, so -one might do the work both on \f(CW\*(C`ev_stat\*(C'\fR callback invocation \fIand\fR on -\&\f(CW\*(C`ev_timer\*(C'\fR callback invocation). -.PP -.Vb 2 -\& static ev_stat passwd; -\& static ev_timer timer; -\& -\& static void -\& timer_cb (EV_P_ ev_timer *w, int revents) -\& { -\& ev_timer_stop (EV_A_ w); -\& -\& /* now it\*(Aqs one second after the most recent passwd change */ -\& } -\& -\& static void -\& stat_cb (EV_P_ ev_stat *w, int revents) -\& { -\& /* reset the one\-second timer */ -\& ev_timer_again (EV_A_ &timer); -\& } -\& -\& ... -\& ev_stat_init (&passwd, stat_cb, "/etc/passwd", 0.); -\& ev_stat_start (loop, &passwd); -\& ev_timer_init (&timer, timer_cb, 0., 1.02); -.Ve -.ie n .Sh """ev_idle"" \- when you've got nothing better to do..." -.el .Sh "\f(CWev_idle\fP \- when you've got nothing better to do..." -.IX Subsection "ev_idle - when you've got nothing better to do..." -Idle watchers trigger events when no other events of the same or higher -priority are pending (prepare, check and other idle watchers do not -count). -.PP -That is, as long as your process is busy handling sockets or timeouts -(or even signals, imagine) of the same or higher priority it will not be -triggered. But when your process is idle (or only lower-priority watchers -are pending), the idle watchers are being called once per event loop -iteration \- until stopped, that is, or your process receives more events -and becomes busy again with higher priority stuff. -.PP -The most noteworthy effect is that as long as any idle watchers are -active, the process will not block when waiting for new events. -.PP -Apart from keeping your process non-blocking (which is a useful -effect on its own sometimes), idle watchers are a good place to do -\&\*(L"pseudo-background processing\*(R", or delay processing stuff to after the -event loop has handled all outstanding events. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_idle_init (ev_signal *, callback)" 4 -.IX Item "ev_idle_init (ev_signal *, callback)" -Initialises and configures the idle watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_idle_set\*(C'\fR macro, but using it is utterly pointless, -believe me. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Dynamically allocate an \f(CW\*(C`ev_idle\*(C'\fR watcher, start it, and in the -callback, free it. Also, use no error checking, as usual. -.PP -.Vb 7 -\& static void -\& idle_cb (struct ev_loop *loop, struct ev_idle *w, int revents) -\& { -\& free (w); -\& // now do something you wanted to do when the program has -\& // no longer anything immediate to do. -\& } -\& -\& struct ev_idle *idle_watcher = malloc (sizeof (struct ev_idle)); -\& ev_idle_init (idle_watcher, idle_cb); -\& ev_idle_start (loop, idle_cb); -.Ve -.ie n .Sh """ev_prepare""\fP and \f(CW""ev_check"" \- customise your event loop!" -.el .Sh "\f(CWev_prepare\fP and \f(CWev_check\fP \- customise your event loop!" -.IX Subsection "ev_prepare and ev_check - customise your event loop!" -Prepare and check watchers are usually (but not always) used in tandem: -prepare watchers get invoked before the process blocks and check watchers -afterwards. -.PP -You \fImust not\fR call \f(CW\*(C`ev_loop\*(C'\fR or similar functions that enter -the current event loop from either \f(CW\*(C`ev_prepare\*(C'\fR or \f(CW\*(C`ev_check\*(C'\fR -watchers. Other loops than the current one are fine, however. The -rationale behind this is that you do not need to check for recursion in -those watchers, i.e. the sequence will always be \f(CW\*(C`ev_prepare\*(C'\fR, blocking, -\&\f(CW\*(C`ev_check\*(C'\fR so if you have one watcher of each kind they will always be -called in pairs bracketing the blocking call. -.PP -Their main purpose is to integrate other event mechanisms into libev and -their use is somewhat advanced. This could be used, for example, to track -variable changes, implement your own watchers, integrate net-snmp or a -coroutine library and lots more. They are also occasionally useful if -you cache some data and want to flush it before blocking (for example, -in X programs you might want to do an \f(CW\*(C`XFlush ()\*(C'\fR in an \f(CW\*(C`ev_prepare\*(C'\fR -watcher). -.PP -This is done by examining in each prepare call which file descriptors need -to be watched by the other library, registering \f(CW\*(C`ev_io\*(C'\fR watchers for -them and starting an \f(CW\*(C`ev_timer\*(C'\fR watcher for any timeouts (many libraries -provide just this functionality). Then, in the check watcher you check for -any events that occured (by checking the pending status of all watchers -and stopping them) and call back into the library. The I/O and timer -callbacks will never actually be called (but must be valid nevertheless, -because you never know, you know?). -.PP -As another example, the Perl Coro module uses these hooks to integrate -coroutines into libev programs, by yielding to other active coroutines -during each prepare and only letting the process block if no coroutines -are ready to run (it's actually more complicated: it only runs coroutines -with priority higher than or equal to the event loop and one coroutine -of lower priority, but only once, using idle watchers to keep the event -loop from blocking if lower-priority coroutines are active, thus mapping -low-priority coroutines to idle/background tasks). -.PP -It is recommended to give \f(CW\*(C`ev_check\*(C'\fR watchers highest (\f(CW\*(C`EV_MAXPRI\*(C'\fR) -priority, to ensure that they are being run before any other watchers -after the poll. Also, \f(CW\*(C`ev_check\*(C'\fR watchers (and \f(CW\*(C`ev_prepare\*(C'\fR watchers, -too) should not activate (\*(L"feed\*(R") events into libev. While libev fully -supports this, they might get executed before other \f(CW\*(C`ev_check\*(C'\fR watchers -did their job. As \f(CW\*(C`ev_check\*(C'\fR watchers are often used to embed other -(non-libev) event loops those other event loops might be in an unusable -state until their \f(CW\*(C`ev_check\*(C'\fR watcher ran (always remind yourself to -coexist peacefully with others). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_prepare_init (ev_prepare *, callback)" 4 -.IX Item "ev_prepare_init (ev_prepare *, callback)" -.PD 0 -.IP "ev_check_init (ev_check *, callback)" 4 -.IX Item "ev_check_init (ev_check *, callback)" -.PD -Initialises and configures the prepare or check watcher \- they have no -parameters of any kind. There are \f(CW\*(C`ev_prepare_set\*(C'\fR and \f(CW\*(C`ev_check_set\*(C'\fR -macros, but using them is utterly, utterly and completely pointless. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -There are a number of principal ways to embed other event loops or modules -into libev. Here are some ideas on how to include libadns into libev -(there is a Perl module named \f(CW\*(C`EV::ADNS\*(C'\fR that does this, which you could -use as a working example. Another Perl module named \f(CW\*(C`EV::Glib\*(C'\fR embeds a -Glib main context into libev, and finally, \f(CW\*(C`Glib::EV\*(C'\fR embeds \s-1EV\s0 into the -Glib event loop). -.PP -Method 1: Add \s-1IO\s0 watchers and a timeout watcher in a prepare handler, -and in a check watcher, destroy them and call into libadns. What follows -is pseudo-code only of course. This requires you to either use a low -priority for the check watcher or use \f(CW\*(C`ev_clear_pending\*(C'\fR explicitly, as -the callbacks for the IO/timeout watchers might not have been called yet. -.PP -.Vb 2 -\& static ev_io iow [nfd]; -\& static ev_timer tw; -\& -\& static void -\& io_cb (ev_loop *loop, ev_io *w, int revents) -\& { -\& } -\& -\& // create io watchers for each fd and a timer before blocking -\& static void -\& adns_prepare_cb (ev_loop *loop, ev_prepare *w, int revents) -\& { -\& int timeout = 3600000; -\& struct pollfd fds [nfd]; -\& // actual code will need to loop here and realloc etc. -\& adns_beforepoll (ads, fds, &nfd, &timeout, timeval_from (ev_time ())); -\& -\& /* the callback is illegal, but won\*(Aqt be called as we stop during check */ -\& ev_timer_init (&tw, 0, timeout * 1e\-3); -\& ev_timer_start (loop, &tw); -\& -\& // create one ev_io per pollfd -\& for (int i = 0; i < nfd; ++i) -\& { -\& ev_io_init (iow + i, io_cb, fds [i].fd, -\& ((fds [i].events & POLLIN ? EV_READ : 0) -\& | (fds [i].events & POLLOUT ? EV_WRITE : 0))); -\& -\& fds [i].revents = 0; -\& ev_io_start (loop, iow + i); -\& } -\& } -\& -\& // stop all watchers after blocking -\& static void -\& adns_check_cb (ev_loop *loop, ev_check *w, int revents) -\& { -\& ev_timer_stop (loop, &tw); -\& -\& for (int i = 0; i < nfd; ++i) -\& { -\& // set the relevant poll flags -\& // could also call adns_processreadable etc. here -\& struct pollfd *fd = fds + i; -\& int revents = ev_clear_pending (iow + i); -\& if (revents & EV_READ ) fd\->revents |= fd\->events & POLLIN; -\& if (revents & EV_WRITE) fd\->revents |= fd\->events & POLLOUT; -\& -\& // now stop the watcher -\& ev_io_stop (loop, iow + i); -\& } -\& -\& adns_afterpoll (adns, fds, nfd, timeval_from (ev_now (loop)); -\& } -.Ve -.PP -Method 2: This would be just like method 1, but you run \f(CW\*(C`adns_afterpoll\*(C'\fR -in the prepare watcher and would dispose of the check watcher. -.PP -Method 3: If the module to be embedded supports explicit event -notification (adns does), you can also make use of the actual watcher -callbacks, and only destroy/create the watchers in the prepare watcher. -.PP -.Vb 5 -\& static void -\& timer_cb (EV_P_ ev_timer *w, int revents) -\& { -\& adns_state ads = (adns_state)w\->data; -\& update_now (EV_A); -\& -\& adns_processtimeouts (ads, &tv_now); -\& } -\& -\& static void -\& io_cb (EV_P_ ev_io *w, int revents) -\& { -\& adns_state ads = (adns_state)w\->data; -\& update_now (EV_A); -\& -\& if (revents & EV_READ ) adns_processreadable (ads, w\->fd, &tv_now); -\& if (revents & EV_WRITE) adns_processwriteable (ads, w\->fd, &tv_now); -\& } -\& -\& // do not ever call adns_afterpoll -.Ve -.PP -Method 4: Do not use a prepare or check watcher because the module you -want to embed is too inflexible to support it. Instead, youc na override -their poll function. The drawback with this solution is that the main -loop is now no longer controllable by \s-1EV\s0. The \f(CW\*(C`Glib::EV\*(C'\fR module does -this. -.PP -.Vb 4 -\& static gint -\& event_poll_func (GPollFD *fds, guint nfds, gint timeout) -\& { -\& int got_events = 0; -\& -\& for (n = 0; n < nfds; ++n) -\& // create/start io watcher that sets the relevant bits in fds[n] and increment got_events -\& -\& if (timeout >= 0) -\& // create/start timer -\& -\& // poll -\& ev_loop (EV_A_ 0); -\& -\& // stop timer again -\& if (timeout >= 0) -\& ev_timer_stop (EV_A_ &to); -\& -\& // stop io watchers again \- their callbacks should have set -\& for (n = 0; n < nfds; ++n) -\& ev_io_stop (EV_A_ iow [n]); -\& -\& return got_events; -\& } -.Ve -.ie n .Sh """ev_embed"" \- when one backend isn't enough..." -.el .Sh "\f(CWev_embed\fP \- when one backend isn't enough..." -.IX Subsection "ev_embed - when one backend isn't enough..." -This is a rather advanced watcher type that lets you embed one event loop -into another (currently only \f(CW\*(C`ev_io\*(C'\fR events are supported in the embedded -loop, other types of watchers might be handled in a delayed or incorrect -fashion and must not be used). -.PP -There are primarily two reasons you would want that: work around bugs and -prioritise I/O. -.PP -As an example for a bug workaround, the kqueue backend might only support -sockets on some platform, so it is unusable as generic backend, but you -still want to make use of it because you have many sockets and it scales -so nicely. In this case, you would create a kqueue-based loop and embed it -into your default loop (which might use e.g. poll). Overall operation will -be a bit slower because first libev has to poll and then call kevent, but -at least you can use both at what they are best. -.PP -As for prioritising I/O: rarely you have the case where some fds have -to be watched and handled very quickly (with low latency), and even -priorities and idle watchers might have too much overhead. In this case -you would put all the high priority stuff in one loop and all the rest in -a second one, and embed the second one in the first. -.PP -As long as the watcher is active, the callback will be invoked every time -there might be events pending in the embedded loop. The callback must then -call \f(CW\*(C`ev_embed_sweep (mainloop, watcher)\*(C'\fR to make a single sweep and invoke -their callbacks (you could also start an idle watcher to give the embedded -loop strictly lower priority for example). You can also set the callback -to \f(CW0\fR, in which case the embed watcher will automatically execute the -embedded loop sweep. -.PP -As long as the watcher is started it will automatically handle events. The -callback will be invoked whenever some events have been handled. You can -set the callback to \f(CW0\fR to avoid having to specify one if you are not -interested in that. -.PP -Also, there have not currently been made special provisions for forking: -when you fork, you not only have to call \f(CW\*(C`ev_loop_fork\*(C'\fR on both loops, -but you will also have to stop and restart any \f(CW\*(C`ev_embed\*(C'\fR watchers -yourself. -.PP -Unfortunately, not all backends are embeddable, only the ones returned by -\&\f(CW\*(C`ev_embeddable_backends\*(C'\fR are, which, unfortunately, does not include any -portable one. -.PP -So when you want to use this feature you will always have to be prepared -that you cannot get an embeddable loop. The recommended way to get around -this is to have a separate variables for your embeddable loop, try to -create it, and if that fails, use the normal loop for everything. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" 4 -.IX Item "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" -.PD 0 -.IP "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" 4 -.IX Item "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" -.PD -Configures the watcher to embed the given loop, which must be -embeddable. If the callback is \f(CW0\fR, then \f(CW\*(C`ev_embed_sweep\*(C'\fR will be -invoked automatically, otherwise it is the responsibility of the callback -to invoke it (it will continue to be called until the sweep has been done, -if you do not want thta, you need to temporarily stop the embed watcher). -.IP "ev_embed_sweep (loop, ev_embed *)" 4 -.IX Item "ev_embed_sweep (loop, ev_embed *)" -Make a single, non-blocking sweep over the embedded loop. This works -similarly to \f(CW\*(C`ev_loop (embedded_loop, EVLOOP_NONBLOCK)\*(C'\fR, but in the most -apropriate way for embedded loops. -.IP "struct ev_loop *other [read\-only]" 4 -.IX Item "struct ev_loop *other [read-only]" -The embedded event loop. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Try to get an embeddable event loop and embed it into the default -event loop. If that is not possible, use the default loop. The default -loop is stored in \f(CW\*(C`loop_hi\*(C'\fR, while the mebeddable loop is stored in -\&\f(CW\*(C`loop_lo\*(C'\fR (which is \f(CW\*(C`loop_hi\*(C'\fR in the acse no embeddable loop can be -used). -.PP -.Vb 3 -\& struct ev_loop *loop_hi = ev_default_init (0); -\& struct ev_loop *loop_lo = 0; -\& struct ev_embed embed; -\& -\& // see if there is a chance of getting one that works -\& // (remember that a flags value of 0 means autodetection) -\& loop_lo = ev_embeddable_backends () & ev_recommended_backends () -\& ? ev_loop_new (ev_embeddable_backends () & ev_recommended_backends ()) -\& : 0; -\& -\& // if we got one, then embed it, otherwise default to loop_hi -\& if (loop_lo) -\& { -\& ev_embed_init (&embed, 0, loop_lo); -\& ev_embed_start (loop_hi, &embed); -\& } -\& else -\& loop_lo = loop_hi; -.Ve -.PP -Example: Check if kqueue is available but not recommended and create -a kqueue backend for use with sockets (which usually work with any -kqueue implementation). Store the kqueue/socket\-only event loop in -\&\f(CW\*(C`loop_socket\*(C'\fR. (One might optionally use \f(CW\*(C`EVFLAG_NOENV\*(C'\fR, too). -.PP -.Vb 3 -\& struct ev_loop *loop = ev_default_init (0); -\& struct ev_loop *loop_socket = 0; -\& struct ev_embed embed; -\& -\& if (ev_supported_backends () & ~ev_recommended_backends () & EVBACKEND_KQUEUE) -\& if ((loop_socket = ev_loop_new (EVBACKEND_KQUEUE)) -\& { -\& ev_embed_init (&embed, 0, loop_socket); -\& ev_embed_start (loop, &embed); -\& } -\& -\& if (!loop_socket) -\& loop_socket = loop; -\& -\& // now use loop_socket for all sockets, and loop for everything else -.Ve -.ie n .Sh """ev_fork"" \- the audacity to resume the event loop after a fork" -.el .Sh "\f(CWev_fork\fP \- the audacity to resume the event loop after a fork" -.IX Subsection "ev_fork - the audacity to resume the event loop after a fork" -Fork watchers are called when a \f(CW\*(C`fork ()\*(C'\fR was detected (usually because -whoever is a good citizen cared to tell libev about it by calling -\&\f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR). The invocation is done before the -event loop blocks next and before \f(CW\*(C`ev_check\*(C'\fR watchers are being called, -and only in the child after the fork. If whoever good citizen calling -\&\f(CW\*(C`ev_default_fork\*(C'\fR cheats and calls it in the wrong process, the fork -handlers will be invoked, too, of course. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_fork_init (ev_signal *, callback)" 4 -.IX Item "ev_fork_init (ev_signal *, callback)" -Initialises and configures the fork watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_fork_set\*(C'\fR macro, but using it is utterly pointless, -believe me. -.ie n .Sh """ev_async"" \- how to wake up another event loop" -.el .Sh "\f(CWev_async\fP \- how to wake up another event loop" -.IX Subsection "ev_async - how to wake up another event loop" -In general, you cannot use an \f(CW\*(C`ev_loop\*(C'\fR from multiple threads or other -asynchronous sources such as signal handlers (as opposed to multiple event -loops \- those are of course safe to use in different threads). -.PP -Sometimes, however, you need to wake up another event loop you do not -control, for example because it belongs to another thread. This is what -\&\f(CW\*(C`ev_async\*(C'\fR watchers do: as long as the \f(CW\*(C`ev_async\*(C'\fR watcher is active, you -can signal it by calling \f(CW\*(C`ev_async_send\*(C'\fR, which is thread\- and signal -safe. -.PP -This functionality is very similar to \f(CW\*(C`ev_signal\*(C'\fR watchers, as signals, -too, are asynchronous in nature, and signals, too, will be compressed -(i.e. the number of callback invocations may be less than the number of -\&\f(CW\*(C`ev_async_sent\*(C'\fR calls). -.PP -Unlike \f(CW\*(C`ev_signal\*(C'\fR watchers, \f(CW\*(C`ev_async\*(C'\fR works with any event loop, not -just the default loop. -.PP -\fIQueueing\fR -.IX Subsection "Queueing" -.PP -\&\f(CW\*(C`ev_async\*(C'\fR does not support queueing of data in any way. The reason -is that the author does not know of a simple (or any) algorithm for a -multiple-writer-single-reader queue that works in all cases and doesn't -need elaborate support such as pthreads. -.PP -That means that if you want to queue data, you have to provide your own -queue. But at least I can tell you would implement locking around your -queue: -.IP "queueing from a signal handler context" 4 -.IX Item "queueing from a signal handler context" -To implement race-free queueing, you simply add to the queue in the signal -handler but you block the signal handler in the watcher callback. Here is an example that does that for -some fictitiuous \s-1SIGUSR1\s0 handler: -.Sp -.Vb 1 -\& static ev_async mysig; -\& -\& static void -\& sigusr1_handler (void) -\& { -\& sometype data; -\& -\& // no locking etc. -\& queue_put (data); -\& ev_async_send (EV_DEFAULT_ &mysig); -\& } -\& -\& static void -\& mysig_cb (EV_P_ ev_async *w, int revents) -\& { -\& sometype data; -\& sigset_t block, prev; -\& -\& sigemptyset (&block); -\& sigaddset (&block, SIGUSR1); -\& sigprocmask (SIG_BLOCK, &block, &prev); -\& -\& while (queue_get (&data)) -\& process (data); -\& -\& if (sigismember (&prev, SIGUSR1) -\& sigprocmask (SIG_UNBLOCK, &block, 0); -\& } -.Ve -.Sp -(Note: pthreads in theory requires you to use \f(CW\*(C`pthread_setmask\*(C'\fR -instead of \f(CW\*(C`sigprocmask\*(C'\fR when you use threads, but libev doesn't do it -either...). -.IP "queueing from a thread context" 4 -.IX Item "queueing from a thread context" -The strategy for threads is different, as you cannot (easily) block -threads but you can easily preempt them, so to queue safely you need to -employ a traditional mutex lock, such as in this pthread example: -.Sp -.Vb 2 -\& static ev_async mysig; -\& static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER; -\& -\& static void -\& otherthread (void) -\& { -\& // only need to lock the actual queueing operation -\& pthread_mutex_lock (&mymutex); -\& queue_put (data); -\& pthread_mutex_unlock (&mymutex); -\& -\& ev_async_send (EV_DEFAULT_ &mysig); -\& } -\& -\& static void -\& mysig_cb (EV_P_ ev_async *w, int revents) -\& { -\& pthread_mutex_lock (&mymutex); -\& -\& while (queue_get (&data)) -\& process (data); -\& -\& pthread_mutex_unlock (&mymutex); -\& } -.Ve -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_async_init (ev_async *, callback)" 4 -.IX Item "ev_async_init (ev_async *, callback)" -Initialises and configures the async watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_asynd_set\*(C'\fR macro, but using it is utterly pointless, -believe me. -.IP "ev_async_send (loop, ev_async *)" 4 -.IX Item "ev_async_send (loop, ev_async *)" -Sends/signals/activates the given \f(CW\*(C`ev_async\*(C'\fR watcher, that is, feeds -an \f(CW\*(C`EV_ASYNC\*(C'\fR event on the watcher into the event loop. Unlike -\&\f(CW\*(C`ev_feed_event\*(C'\fR, this call is safe to do in other threads, signal or -similar contexts (see the dicusssion of \f(CW\*(C`EV_ATOMIC_T\*(C'\fR in the embedding -section below on what exactly this means). -.Sp -This call incurs the overhead of a syscall only once per loop iteration, -so while the overhead might be noticable, it doesn't apply to repeated -calls to \f(CW\*(C`ev_async_send\*(C'\fR. -.IP "bool = ev_async_pending (ev_async *)" 4 -.IX Item "bool = ev_async_pending (ev_async *)" -Returns a non-zero value when \f(CW\*(C`ev_async_send\*(C'\fR has been called on the -watcher but the event has not yet been processed (or even noted) by the -event loop. -.Sp -\&\f(CW\*(C`ev_async_send\*(C'\fR sets a flag in the watcher and wakes up the loop. When -the loop iterates next and checks for the watcher to have become active, -it will reset the flag again. \f(CW\*(C`ev_async_pending\*(C'\fR can be used to very -quickly check wether invoking the loop might be a good idea. -.Sp -Not that this does \fInot\fR check wether the watcher itself is pending, only -wether it has been requested to make this watcher pending. -.SH "OTHER FUNCTIONS" -.IX Header "OTHER FUNCTIONS" -There are some other functions of possible interest. Described. Here. Now. -.IP "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" 4 -.IX Item "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" -This function combines a simple timer and an I/O watcher, calls your -callback on whichever event happens first and automatically stop both -watchers. This is useful if you want to wait for a single event on an fd -or timeout without having to allocate/configure/start/stop/free one or -more watchers yourself. -.Sp -If \f(CW\*(C`fd\*(C'\fR is less than 0, then no I/O watcher will be started and events -is being ignored. Otherwise, an \f(CW\*(C`ev_io\*(C'\fR watcher for the given \f(CW\*(C`fd\*(C'\fR and -\&\f(CW\*(C`events\*(C'\fR set will be craeted and started. -.Sp -If \f(CW\*(C`timeout\*(C'\fR is less than 0, then no timeout watcher will be -started. Otherwise an \f(CW\*(C`ev_timer\*(C'\fR watcher with after = \f(CW\*(C`timeout\*(C'\fR (and -repeat = 0) will be started. While \f(CW0\fR is a valid timeout, it is of -dubious value. -.Sp -The callback has the type \f(CW\*(C`void (*cb)(int revents, void *arg)\*(C'\fR and gets -passed an \f(CW\*(C`revents\*(C'\fR set like normal event callbacks (a combination of -\&\f(CW\*(C`EV_ERROR\*(C'\fR, \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or \f(CW\*(C`EV_TIMEOUT\*(C'\fR) and the \f(CW\*(C`arg\*(C'\fR -value passed to \f(CW\*(C`ev_once\*(C'\fR: -.Sp -.Vb 7 -\& static void stdin_ready (int revents, void *arg) -\& { -\& if (revents & EV_TIMEOUT) -\& /* doh, nothing entered */; -\& else if (revents & EV_READ) -\& /* stdin might have data for us, joy! */; -\& } -\& -\& ev_once (STDIN_FILENO, EV_READ, 10., stdin_ready, 0); -.Ve -.IP "ev_feed_event (ev_loop *, watcher *, int revents)" 4 -.IX Item "ev_feed_event (ev_loop *, watcher *, int revents)" -Feeds the given event set into the event loop, as if the specified event -had happened for the specified watcher (which must be a pointer to an -initialised but not necessarily started event watcher). -.IP "ev_feed_fd_event (ev_loop *, int fd, int revents)" 4 -.IX Item "ev_feed_fd_event (ev_loop *, int fd, int revents)" -Feed an event on the given fd, as if a file descriptor backend detected -the given events it. -.IP "ev_feed_signal_event (ev_loop *loop, int signum)" 4 -.IX Item "ev_feed_signal_event (ev_loop *loop, int signum)" -Feed an event as if the given signal occured (\f(CW\*(C`loop\*(C'\fR must be the default -loop!). -.SH "LIBEVENT EMULATION" -.IX Header "LIBEVENT EMULATION" -Libev offers a compatibility emulation layer for libevent. It cannot -emulate the internals of libevent, so here are some usage hints: -.IP "\(bu" 4 -Use it by including , as usual. -.IP "\(bu" 4 -The following members are fully supported: ev_base, ev_callback, -ev_arg, ev_fd, ev_res, ev_events. -.IP "\(bu" 4 -Avoid using ev_flags and the EVLIST_*\-macros, while it is -maintained by libev, it does not work exactly the same way as in libevent (consider -it a private \s-1API\s0). -.IP "\(bu" 4 -Priorities are not currently supported. Initialising priorities -will fail and all watchers will have the same priority, even though there -is an ev_pri field. -.IP "\(bu" 4 -In libevent, the last base created gets the signals, in libev, the -first base created (== the default loop) gets the signals. -.IP "\(bu" 4 -Other members are not supported. -.IP "\(bu" 4 -The libev emulation is \fInot\fR \s-1ABI\s0 compatible to libevent, you need -to use the libev header file and library. -.SH "\*(C+ SUPPORT" -.IX Header " SUPPORT" -Libev comes with some simplistic wrapper classes for \*(C+ that mainly allow -you to use some convinience methods to start/stop watchers and also change -the callback model to a model using method callbacks on objects. -.PP -To use it, -.PP -.Vb 1 -\& #include -.Ve -.PP -This automatically includes \fIev.h\fR and puts all of its definitions (many -of them macros) into the global namespace. All \*(C+ specific things are -put into the \f(CW\*(C`ev\*(C'\fR namespace. It should support all the same embedding -options as \fIev.h\fR, most notably \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. -.PP -Care has been taken to keep the overhead low. The only data member the \*(C+ -classes add (compared to plain C\-style watchers) is the event loop pointer -that the watcher is associated with (or no additional members at all if -you disable \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR when embedding libev). -.PP -Currently, functions, and static and non-static member functions can be -used as callbacks. Other types should be easy to add as long as they only -need one additional pointer for context. If you need support for other -types of functors please contact the author (preferably after implementing -it). -.PP -Here is a list of things available in the \f(CW\*(C`ev\*(C'\fR namespace: -.ie n .IP """ev::READ""\fR, \f(CW""ev::WRITE"" etc." 4 -.el .IP "\f(CWev::READ\fR, \f(CWev::WRITE\fR etc." 4 -.IX Item "ev::READ, ev::WRITE etc." -These are just enum values with the same values as the \f(CW\*(C`EV_READ\*(C'\fR etc. -macros from \fIev.h\fR. -.ie n .IP """ev::tstamp""\fR, \f(CW""ev::now""" 4 -.el .IP "\f(CWev::tstamp\fR, \f(CWev::now\fR" 4 -.IX Item "ev::tstamp, ev::now" -Aliases to the same types/functions as with the \f(CW\*(C`ev_\*(C'\fR prefix. -.ie n .IP """ev::io""\fR, \f(CW""ev::timer""\fR, \f(CW""ev::periodic""\fR, \f(CW""ev::idle""\fR, \f(CW""ev::sig"" etc." 4 -.el .IP "\f(CWev::io\fR, \f(CWev::timer\fR, \f(CWev::periodic\fR, \f(CWev::idle\fR, \f(CWev::sig\fR etc." 4 -.IX Item "ev::io, ev::timer, ev::periodic, ev::idle, ev::sig etc." -For each \f(CW\*(C`ev_TYPE\*(C'\fR watcher in \fIev.h\fR there is a corresponding class of -the same name in the \f(CW\*(C`ev\*(C'\fR namespace, with the exception of \f(CW\*(C`ev_signal\*(C'\fR -which is called \f(CW\*(C`ev::sig\*(C'\fR to avoid clashes with the \f(CW\*(C`signal\*(C'\fR macro -defines by many implementations. -.Sp -All of those classes have these methods: -.RS 4 -.IP "ev::TYPE::TYPE ()" 4 -.IX Item "ev::TYPE::TYPE ()" -.PD 0 -.IP "ev::TYPE::TYPE (struct ev_loop *)" 4 -.IX Item "ev::TYPE::TYPE (struct ev_loop *)" -.IP "ev::TYPE::~TYPE" 4 -.IX Item "ev::TYPE::~TYPE" -.PD -The constructor (optionally) takes an event loop to associate the watcher -with. If it is omitted, it will use \f(CW\*(C`EV_DEFAULT\*(C'\fR. -.Sp -The constructor calls \f(CW\*(C`ev_init\*(C'\fR for you, which means you have to call the -\&\f(CW\*(C`set\*(C'\fR method before starting it. -.Sp -It will not set a callback, however: You have to call the templated \f(CW\*(C`set\*(C'\fR -method to set a callback before you can start the watcher. -.Sp -(The reason why you have to use a method is a limitation in \*(C+ which does -not allow explicit template arguments for constructors). -.Sp -The destructor automatically stops the watcher if it is active. -.IP "w\->set (object *)" 4 -.IX Item "w->set (object *)" -This method sets the callback method to call. The method has to have a -signature of \f(CW\*(C`void (*)(ev_TYPE &, int)\*(C'\fR, it receives the watcher as -first argument and the \f(CW\*(C`revents\*(C'\fR as second. The object must be given as -parameter and is stored in the \f(CW\*(C`data\*(C'\fR member of the watcher. -.Sp -This method synthesizes efficient thunking code to call your method from -the C callback that libev requires. If your compiler can inline your -callback (i.e. it is visible to it at the place of the \f(CW\*(C`set\*(C'\fR call and -your compiler is good :), then the method will be fully inlined into the -thunking function, making it as fast as a direct C callback. -.Sp -Example: simple class declaration and watcher initialisation -.Sp -.Vb 4 -\& struct myclass -\& { -\& void io_cb (ev::io &w, int revents) { } -\& } -\& -\& myclass obj; -\& ev::io iow; -\& iow.set (&obj); -.Ve -.IP "w\->set (void *data = 0)" 4 -.IX Item "w->set (void *data = 0)" -Also sets a callback, but uses a static method or plain function as -callback. The optional \f(CW\*(C`data\*(C'\fR argument will be stored in the watcher's -\&\f(CW\*(C`data\*(C'\fR member and is free for you to use. -.Sp -The prototype of the \f(CW\*(C`function\*(C'\fR must be \f(CW\*(C`void (*)(ev::TYPE &w, int)\*(C'\fR. -.Sp -See the method\-\f(CW\*(C`set\*(C'\fR above for more details. -.Sp -Example: -.Sp -.Vb 2 -\& static void io_cb (ev::io &w, int revents) { } -\& iow.set (); -.Ve -.IP "w\->set (struct ev_loop *)" 4 -.IX Item "w->set (struct ev_loop *)" -Associates a different \f(CW\*(C`struct ev_loop\*(C'\fR with this watcher. You can only -do this when the watcher is inactive (and not pending either). -.IP "w\->set ([args])" 4 -.IX Item "w->set ([args])" -Basically the same as \f(CW\*(C`ev_TYPE_set\*(C'\fR, with the same args. Must be -called at least once. Unlike the C counterpart, an active watcher gets -automatically stopped and restarted when reconfiguring it with this -method. -.IP "w\->start ()" 4 -.IX Item "w->start ()" -Starts the watcher. Note that there is no \f(CW\*(C`loop\*(C'\fR argument, as the -constructor already stores the event loop. -.IP "w\->stop ()" 4 -.IX Item "w->stop ()" -Stops the watcher if it is active. Again, no \f(CW\*(C`loop\*(C'\fR argument. -.ie n .IP "w\->again () (""ev::timer""\fR, \f(CW""ev::periodic"" only)" 4 -.el .IP "w\->again () (\f(CWev::timer\fR, \f(CWev::periodic\fR only)" 4 -.IX Item "w->again () (ev::timer, ev::periodic only)" -For \f(CW\*(C`ev::timer\*(C'\fR and \f(CW\*(C`ev::periodic\*(C'\fR, this invokes the corresponding -\&\f(CW\*(C`ev_TYPE_again\*(C'\fR function. -.ie n .IP "w\->sweep () (""ev::embed"" only)" 4 -.el .IP "w\->sweep () (\f(CWev::embed\fR only)" 4 -.IX Item "w->sweep () (ev::embed only)" -Invokes \f(CW\*(C`ev_embed_sweep\*(C'\fR. -.ie n .IP "w\->update () (""ev::stat"" only)" 4 -.el .IP "w\->update () (\f(CWev::stat\fR only)" 4 -.IX Item "w->update () (ev::stat only)" -Invokes \f(CW\*(C`ev_stat_stat\*(C'\fR. -.RE -.RS 4 -.RE -.PP -Example: Define a class with an \s-1IO\s0 and idle watcher, start one of them in -the constructor. -.PP -.Vb 4 -\& class myclass -\& { -\& ev::io io; void io_cb (ev::io &w, int revents); -\& ev:idle idle void idle_cb (ev::idle &w, int revents); -\& -\& myclass (int fd) -\& { -\& io .set (this); -\& idle.set (this); -\& -\& io.start (fd, ev::READ); -\& } -\& }; -.Ve -.SH "OTHER LANGUAGE BINDINGS" -.IX Header "OTHER LANGUAGE BINDINGS" -Libev does not offer other language bindings itself, but bindings for a -numbe rof languages exist in the form of third-party packages. If you know -any interesting language binding in addition to the ones listed here, drop -me a note. -.IP "Perl" 4 -.IX Item "Perl" -The \s-1EV\s0 module implements the full libev \s-1API\s0 and is actually used to test -libev. \s-1EV\s0 is developed together with libev. Apart from the \s-1EV\s0 core module, -there are additional modules that implement libev-compatible interfaces -to \f(CW\*(C`libadns\*(C'\fR (\f(CW\*(C`EV::ADNS\*(C'\fR), \f(CW\*(C`Net::SNMP\*(C'\fR (\f(CW\*(C`Net::SNMP::EV\*(C'\fR) and the -\&\f(CW\*(C`libglib\*(C'\fR event core (\f(CW\*(C`Glib::EV\*(C'\fR and \f(CW\*(C`EV::Glib\*(C'\fR). -.Sp -It can be found and installed via \s-1CPAN\s0, its homepage is found at -. -.IP "Ruby" 4 -.IX Item "Ruby" -Tony Arcieri has written a ruby extension that offers access to a subset -of the libev \s-1API\s0 and adds filehandle abstractions, asynchronous \s-1DNS\s0 and -more on top of it. It can be found via gem servers. Its homepage is at -. -.IP "D" 4 -.IX Item "D" -Leandro Lucarella has written a D language binding (\fIev.d\fR) for libev, to -be found at . -.SH "MACRO MAGIC" -.IX Header "MACRO MAGIC" -Libev can be compiled with a variety of options, the most fundamantal -of which is \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. This option determines whether (most) -functions and callbacks have an initial \f(CW\*(C`struct ev_loop *\*(C'\fR argument. -.PP -To make it easier to write programs that cope with either variant, the -following macros are defined: -.ie n .IP """EV_A""\fR, \f(CW""EV_A_""" 4 -.el .IP "\f(CWEV_A\fR, \f(CWEV_A_\fR" 4 -.IX Item "EV_A, EV_A_" -This provides the loop \fIargument\fR for functions, if one is required (\*(L"ev -loop argument\*(R"). The \f(CW\*(C`EV_A\*(C'\fR form is used when this is the sole argument, -\&\f(CW\*(C`EV_A_\*(C'\fR is used when other arguments are following. Example: -.Sp -.Vb 3 -\& ev_unref (EV_A); -\& ev_timer_add (EV_A_ watcher); -\& ev_loop (EV_A_ 0); -.Ve -.Sp -It assumes the variable \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR is in scope, -which is often provided by the following macro. -.ie n .IP """EV_P""\fR, \f(CW""EV_P_""" 4 -.el .IP "\f(CWEV_P\fR, \f(CWEV_P_\fR" 4 -.IX Item "EV_P, EV_P_" -This provides the loop \fIparameter\fR for functions, if one is required (\*(L"ev -loop parameter\*(R"). The \f(CW\*(C`EV_P\*(C'\fR form is used when this is the sole parameter, -\&\f(CW\*(C`EV_P_\*(C'\fR is used when other parameters are following. Example: -.Sp -.Vb 2 -\& // this is how ev_unref is being declared -\& static void ev_unref (EV_P); -\& -\& // this is how you can declare your typical callback -\& static void cb (EV_P_ ev_timer *w, int revents) -.Ve -.Sp -It declares a parameter \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR, quite -suitable for use with \f(CW\*(C`EV_A\*(C'\fR. -.ie n .IP """EV_DEFAULT""\fR, \f(CW""EV_DEFAULT_""" 4 -.el .IP "\f(CWEV_DEFAULT\fR, \f(CWEV_DEFAULT_\fR" 4 -.IX Item "EV_DEFAULT, EV_DEFAULT_" -Similar to the other two macros, this gives you the value of the default -loop, if multiple loops are supported (\*(L"ev loop default\*(R"). -.ie n .IP """EV_DEFAULT_UC""\fR, \f(CW""EV_DEFAULT_UC_""" 4 -.el .IP "\f(CWEV_DEFAULT_UC\fR, \f(CWEV_DEFAULT_UC_\fR" 4 -.IX Item "EV_DEFAULT_UC, EV_DEFAULT_UC_" -Usage identical to \f(CW\*(C`EV_DEFAULT\*(C'\fR and \f(CW\*(C`EV_DEFAULT_\*(C'\fR, but requires that the -default loop has been initialised (\f(CW\*(C`UC\*(C'\fR == unchecked). Their behaviour -is undefined when the default loop has not been initialised by a previous -execution of \f(CW\*(C`EV_DEFAULT\*(C'\fR, \f(CW\*(C`EV_DEFAULT_\*(C'\fR or \f(CW\*(C`ev_default_init (...)\*(C'\fR. -.Sp -It is often prudent to use \f(CW\*(C`EV_DEFAULT\*(C'\fR when initialising the first -watcher in a function but use \f(CW\*(C`EV_DEFAULT_UC\*(C'\fR afterwards. -.PP -Example: Declare and initialise a check watcher, utilising the above -macros so it will work regardless of whether multiple loops are supported -or not. -.PP -.Vb 5 -\& static void -\& check_cb (EV_P_ ev_timer *w, int revents) -\& { -\& ev_check_stop (EV_A_ w); -\& } -\& -\& ev_check check; -\& ev_check_init (&check, check_cb); -\& ev_check_start (EV_DEFAULT_ &check); -\& ev_loop (EV_DEFAULT_ 0); -.Ve -.SH "EMBEDDING" -.IX Header "EMBEDDING" -Libev can (and often is) directly embedded into host -applications. Examples of applications that embed it include the Deliantra -Game Server, the \s-1EV\s0 perl module, the \s-1GNU\s0 Virtual Private Ethernet (gvpe) -and rxvt-unicode. -.PP -The goal is to enable you to just copy the necessary files into your -source directory without having to change even a single line in them, so -you can easily upgrade by simply copying (or having a checked-out copy of -libev somewhere in your source tree). -.Sh "\s-1FILESETS\s0" -.IX Subsection "FILESETS" -Depending on what features you need you need to include one or more sets of files -in your app. -.PP -\fI\s-1CORE\s0 \s-1EVENT\s0 \s-1LOOP\s0\fR -.IX Subsection "CORE EVENT LOOP" -.PP -To include only the libev core (all the \f(CW\*(C`ev_*\*(C'\fR functions), with manual -configuration (no autoconf): -.PP -.Vb 2 -\& #define EV_STANDALONE 1 -\& #include "ev.c" -.Ve -.PP -This will automatically include \fIev.h\fR, too, and should be done in a -single C source file only to provide the function implementations. To use -it, do the same for \fIev.h\fR in all files wishing to use this \s-1API\s0 (best -done by writing a wrapper around \fIev.h\fR that you can include instead and -where you can put other configuration options): -.PP -.Vb 2 -\& #define EV_STANDALONE 1 -\& #include "ev.h" -.Ve -.PP -Both header files and implementation files can be compiled with a \*(C+ -compiler (at least, thats a stated goal, and breakage will be treated -as a bug). -.PP -You need the following files in your source tree, or in a directory -in your include path (e.g. in libev/ when using \-Ilibev): -.PP -.Vb 4 -\& ev.h -\& ev.c -\& ev_vars.h -\& ev_wrap.h -\& -\& ev_win32.c required on win32 platforms only -\& -\& ev_select.c only when select backend is enabled (which is enabled by default) -\& ev_poll.c only when poll backend is enabled (disabled by default) -\& ev_epoll.c only when the epoll backend is enabled (disabled by default) -\& ev_kqueue.c only when the kqueue backend is enabled (disabled by default) -\& ev_port.c only when the solaris port backend is enabled (disabled by default) -.Ve -.PP -\&\fIev.c\fR includes the backend files directly when enabled, so you only need -to compile this single file. -.PP -\fI\s-1LIBEVENT\s0 \s-1COMPATIBILITY\s0 \s-1API\s0\fR -.IX Subsection "LIBEVENT COMPATIBILITY API" -.PP -To include the libevent compatibility \s-1API\s0, also include: -.PP -.Vb 1 -\& #include "event.c" -.Ve -.PP -in the file including \fIev.c\fR, and: -.PP -.Vb 1 -\& #include "event.h" -.Ve -.PP -in the files that want to use the libevent \s-1API\s0. This also includes \fIev.h\fR. -.PP -You need the following additional files for this: -.PP -.Vb 2 -\& event.h -\& event.c -.Ve -.PP -\fI\s-1AUTOCONF\s0 \s-1SUPPORT\s0\fR -.IX Subsection "AUTOCONF SUPPORT" -.PP -Instead of using \f(CW\*(C`EV_STANDALONE=1\*(C'\fR and providing your config in -whatever way you want, you can also \f(CW\*(C`m4_include([libev.m4])\*(C'\fR in your -\&\fIconfigure.ac\fR and leave \f(CW\*(C`EV_STANDALONE\*(C'\fR undefined. \fIev.c\fR will then -include \fIconfig.h\fR and configure itself accordingly. -.PP -For this of course you need the m4 file: -.PP -.Vb 1 -\& libev.m4 -.Ve -.Sh "\s-1PREPROCESSOR\s0 \s-1SYMBOLS/MACROS\s0" -.IX Subsection "PREPROCESSOR SYMBOLS/MACROS" -Libev can be configured via a variety of preprocessor symbols you have to -define before including any of its files. The default in the absense of -autoconf is noted for every option. -.IP "\s-1EV_STANDALONE\s0" 4 -.IX Item "EV_STANDALONE" -Must always be \f(CW1\fR if you do not use autoconf configuration, which -keeps libev from including \fIconfig.h\fR, and it also defines dummy -implementations for some libevent functions (such as logging, which is not -supported). It will also not define any of the structs usually found in -\&\fIevent.h\fR that are not directly supported by the libev core alone. -.IP "\s-1EV_USE_MONOTONIC\s0" 4 -.IX Item "EV_USE_MONOTONIC" -If defined to be \f(CW1\fR, libev will try to detect the availability of the -monotonic clock option at both compiletime and runtime. Otherwise no use -of the monotonic clock option will be attempted. If you enable this, you -usually have to link against librt or something similar. Enabling it when -the functionality isn't available is safe, though, although you have -to make sure you link against any libraries where the \f(CW\*(C`clock_gettime\*(C'\fR -function is hiding in (often \fI\-lrt\fR). -.IP "\s-1EV_USE_REALTIME\s0" 4 -.IX Item "EV_USE_REALTIME" -If defined to be \f(CW1\fR, libev will try to detect the availability of the -realtime clock option at compiletime (and assume its availability at -runtime if successful). Otherwise no use of the realtime clock option will -be attempted. This effectively replaces \f(CW\*(C`gettimeofday\*(C'\fR by \f(CW\*(C`clock_get -(CLOCK_REALTIME, ...)\*(C'\fR and will not normally affect correctness. See the -note about libraries in the description of \f(CW\*(C`EV_USE_MONOTONIC\*(C'\fR, though. -.IP "\s-1EV_USE_NANOSLEEP\s0" 4 -.IX Item "EV_USE_NANOSLEEP" -If defined to be \f(CW1\fR, libev will assume that \f(CW\*(C`nanosleep ()\*(C'\fR is available -and will use it for delays. Otherwise it will use \f(CW\*(C`select ()\*(C'\fR. -.IP "\s-1EV_USE_EVENTFD\s0" 4 -.IX Item "EV_USE_EVENTFD" -If defined to be \f(CW1\fR, then libev will assume that \f(CW\*(C`eventfd ()\*(C'\fR is -available and will probe for kernel support at runtime. This will improve -\&\f(CW\*(C`ev_signal\*(C'\fR and \f(CW\*(C`ev_async\*(C'\fR performance and reduce resource consumption. -If undefined, it will be enabled if the headers indicate GNU/Linux + Glibc -2.7 or newer, otherwise disabled. -.IP "\s-1EV_USE_SELECT\s0" 4 -.IX Item "EV_USE_SELECT" -If undefined or defined to be \f(CW1\fR, libev will compile in support for the -\&\f(CW\*(C`select\*(C'\fR(2) backend. No attempt at autodetection will be done: if no -other method takes over, select will be it. Otherwise the select backend -will not be compiled in. -.IP "\s-1EV_SELECT_USE_FD_SET\s0" 4 -.IX Item "EV_SELECT_USE_FD_SET" -If defined to \f(CW1\fR, then the select backend will use the system \f(CW\*(C`fd_set\*(C'\fR -structure. This is useful if libev doesn't compile due to a missing -\&\f(CW\*(C`NFDBITS\*(C'\fR or \f(CW\*(C`fd_mask\*(C'\fR definition or it misguesses the bitset layout on -exotic systems. This usually limits the range of file descriptors to some -low limit such as 1024 or might have other limitations (winsocket only -allows 64 sockets). The \f(CW\*(C`FD_SETSIZE\*(C'\fR macro, set before compilation, might -influence the size of the \f(CW\*(C`fd_set\*(C'\fR used. -.IP "\s-1EV_SELECT_IS_WINSOCKET\s0" 4 -.IX Item "EV_SELECT_IS_WINSOCKET" -When defined to \f(CW1\fR, the select backend will assume that -select/socket/connect etc. don't understand file descriptors but -wants osf handles on win32 (this is the case when the select to -be used is the winsock select). This means that it will call -\&\f(CW\*(C`_get_osfhandle\*(C'\fR on the fd to convert it to an \s-1OS\s0 handle. Otherwise, -it is assumed that all these functions actually work on fds, even -on win32. Should not be defined on non\-win32 platforms. -.IP "\s-1EV_FD_TO_WIN32_HANDLE\s0" 4 -.IX Item "EV_FD_TO_WIN32_HANDLE" -If \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR is enabled, then libev needs a way to map -file descriptors to socket handles. When not defining this symbol (the -default), then libev will call \f(CW\*(C`_get_osfhandle\*(C'\fR, which is usually -correct. In some cases, programs use their own file descriptor management, -in which case they can provide this function to map fds to socket handles. -.IP "\s-1EV_USE_POLL\s0" 4 -.IX Item "EV_USE_POLL" -If defined to be \f(CW1\fR, libev will compile in support for the \f(CW\*(C`poll\*(C'\fR(2) -backend. Otherwise it will be enabled on non\-win32 platforms. It -takes precedence over select. -.IP "\s-1EV_USE_EPOLL\s0" 4 -.IX Item "EV_USE_EPOLL" -If defined to be \f(CW1\fR, libev will compile in support for the Linux -\&\f(CW\*(C`epoll\*(C'\fR(7) backend. Its availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for GNU/Linux systems. If undefined, it will be enabled if the -headers indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled. -.IP "\s-1EV_USE_KQUEUE\s0" 4 -.IX Item "EV_USE_KQUEUE" -If defined to be \f(CW1\fR, libev will compile in support for the \s-1BSD\s0 style -\&\f(CW\*(C`kqueue\*(C'\fR(2) backend. Its actual availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for \s-1BSD\s0 and BSD-like systems, although on most BSDs kqueue only -supports some types of fds correctly (the only platform we found that -supports ptys for example was NetBSD), so kqueue might be compiled in, but -not be used unless explicitly requested. The best way to use it is to find -out whether kqueue supports your type of fd properly and use an embedded -kqueue loop. -.IP "\s-1EV_USE_PORT\s0" 4 -.IX Item "EV_USE_PORT" -If defined to be \f(CW1\fR, libev will compile in support for the Solaris -10 port style backend. Its availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for Solaris 10 systems. -.IP "\s-1EV_USE_DEVPOLL\s0" 4 -.IX Item "EV_USE_DEVPOLL" -reserved for future expansion, works like the \s-1USE\s0 symbols above. -.IP "\s-1EV_USE_INOTIFY\s0" 4 -.IX Item "EV_USE_INOTIFY" -If defined to be \f(CW1\fR, libev will compile in support for the Linux inotify -interface to speed up \f(CW\*(C`ev_stat\*(C'\fR watchers. Its actual availability will -be detected at runtime. If undefined, it will be enabled if the headers -indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled. -.IP "\s-1EV_ATOMIC_T\s0" 4 -.IX Item "EV_ATOMIC_T" -Libev requires an integer type (suitable for storing \f(CW0\fR or \f(CW1\fR) whose -access is atomic with respect to other threads or signal contexts. No such -type is easily found in the C language, so you can provide your own type -that you know is safe for your purposes. It is used both for signal handler \*(L"locking\*(R" -as well as for signal and thread safety in \f(CW\*(C`ev_async\*(C'\fR watchers. -.Sp -In the absense of this define, libev will use \f(CW\*(C`sig_atomic_t volatile\*(C'\fR -(from \fIsignal.h\fR), which is usually good enough on most platforms. -.IP "\s-1EV_H\s0" 4 -.IX Item "EV_H" -The name of the \fIev.h\fR header file used to include it. The default if -undefined is \f(CW"ev.h"\fR in \fIevent.h\fR, \fIev.c\fR and \fIev++.h\fR. This can be -used to virtually rename the \fIev.h\fR header file in case of conflicts. -.IP "\s-1EV_CONFIG_H\s0" 4 -.IX Item "EV_CONFIG_H" -If \f(CW\*(C`EV_STANDALONE\*(C'\fR isn't \f(CW1\fR, this variable can be used to override -\&\fIev.c\fR's idea of where to find the \fIconfig.h\fR file, similarly to -\&\f(CW\*(C`EV_H\*(C'\fR, above. -.IP "\s-1EV_EVENT_H\s0" 4 -.IX Item "EV_EVENT_H" -Similarly to \f(CW\*(C`EV_H\*(C'\fR, this macro can be used to override \fIevent.c\fR's idea -of how the \fIevent.h\fR header can be found, the default is \f(CW"event.h"\fR. -.IP "\s-1EV_PROTOTYPES\s0" 4 -.IX Item "EV_PROTOTYPES" -If defined to be \f(CW0\fR, then \fIev.h\fR will not define any function -prototypes, but still define all the structs and other symbols. This is -occasionally useful if you want to provide your own wrapper functions -around libev functions. -.IP "\s-1EV_MULTIPLICITY\s0" 4 -.IX Item "EV_MULTIPLICITY" -If undefined or defined to \f(CW1\fR, then all event-loop-specific functions -will have the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument, and you can create -additional independent event loops. Otherwise there will be no support -for multiple event loops and there is no first event loop pointer -argument. Instead, all functions act on the single default loop. -.IP "\s-1EV_MINPRI\s0" 4 -.IX Item "EV_MINPRI" -.PD 0 -.IP "\s-1EV_MAXPRI\s0" 4 -.IX Item "EV_MAXPRI" -.PD -The range of allowed priorities. \f(CW\*(C`EV_MINPRI\*(C'\fR must be smaller or equal to -\&\f(CW\*(C`EV_MAXPRI\*(C'\fR, but otherwise there are no non-obvious limitations. You can -provide for more priorities by overriding those symbols (usually defined -to be \f(CW\*(C`\-2\*(C'\fR and \f(CW2\fR, respectively). -.Sp -When doing priority-based operations, libev usually has to linearly search -all the priorities, so having many of them (hundreds) uses a lot of space -and time, so using the defaults of five priorities (\-2 .. +2) is usually -fine. -.Sp -If your embedding app does not need any priorities, defining these both to -\&\f(CW0\fR will save some memory and cpu. -.IP "\s-1EV_PERIODIC_ENABLE\s0" 4 -.IX Item "EV_PERIODIC_ENABLE" -If undefined or defined to be \f(CW1\fR, then periodic timers are supported. If -defined to be \f(CW0\fR, then they are not. Disabling them saves a few kB of -code. -.IP "\s-1EV_IDLE_ENABLE\s0" 4 -.IX Item "EV_IDLE_ENABLE" -If undefined or defined to be \f(CW1\fR, then idle watchers are supported. If -defined to be \f(CW0\fR, then they are not. Disabling them saves a few kB of -code. -.IP "\s-1EV_EMBED_ENABLE\s0" 4 -.IX Item "EV_EMBED_ENABLE" -If undefined or defined to be \f(CW1\fR, then embed watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_STAT_ENABLE\s0" 4 -.IX Item "EV_STAT_ENABLE" -If undefined or defined to be \f(CW1\fR, then stat watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_FORK_ENABLE\s0" 4 -.IX Item "EV_FORK_ENABLE" -If undefined or defined to be \f(CW1\fR, then fork watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_ASYNC_ENABLE\s0" 4 -.IX Item "EV_ASYNC_ENABLE" -If undefined or defined to be \f(CW1\fR, then async watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_MINIMAL\s0" 4 -.IX Item "EV_MINIMAL" -If you need to shave off some kilobytes of code at the expense of some -speed, define this symbol to \f(CW1\fR. Currently this is used to override some -inlining decisions, saves roughly 30% codesize of amd64. It also selects a -much smaller 2\-heap for timer management over the default 4\-heap. -.IP "\s-1EV_PID_HASHSIZE\s0" 4 -.IX Item "EV_PID_HASHSIZE" -\&\f(CW\*(C`ev_child\*(C'\fR watchers use a small hash table to distribute workload by -pid. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_MINIMAL\*(C'\fR), usually more -than enough. If you need to manage thousands of children you might want to -increase this value (\fImust\fR be a power of two). -.IP "\s-1EV_INOTIFY_HASHSIZE\s0" 4 -.IX Item "EV_INOTIFY_HASHSIZE" -\&\f(CW\*(C`ev_stat\*(C'\fR watchers use a small hash table to distribute workload by -inotify watch id. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_MINIMAL\*(C'\fR), -usually more than enough. If you need to manage thousands of \f(CW\*(C`ev_stat\*(C'\fR -watchers you might want to increase this value (\fImust\fR be a power of -two). -.IP "\s-1EV_USE_4HEAP\s0" 4 -.IX Item "EV_USE_4HEAP" -Heaps are not very cache-efficient. To improve the cache-efficiency of the -timer and periodics heap, libev uses a 4\-heap when this symbol is defined -to \f(CW1\fR. The 4\-heap uses more complicated (longer) code but has a -noticable after performance with many (thousands) of watchers. -.Sp -The default is \f(CW1\fR unless \f(CW\*(C`EV_MINIMAL\*(C'\fR is set in which case it is \f(CW0\fR -(disabled). -.IP "\s-1EV_HEAP_CACHE_AT\s0" 4 -.IX Item "EV_HEAP_CACHE_AT" -Heaps are not very cache-efficient. To improve the cache-efficiency of the -timer and periodics heap, libev can cache the timestamp (\fIat\fR) within -the heap structure (selected by defining \f(CW\*(C`EV_HEAP_CACHE_AT\*(C'\fR to \f(CW1\fR), -which uses 8\-12 bytes more per watcher and a few hundred bytes more code, -but avoids random read accesses on heap changes. This noticably improves -performance noticably with with many (hundreds) of watchers. -.Sp -The default is \f(CW1\fR unless \f(CW\*(C`EV_MINIMAL\*(C'\fR is set in which case it is \f(CW0\fR -(disabled). -.IP "\s-1EV_COMMON\s0" 4 -.IX Item "EV_COMMON" -By default, all watchers have a \f(CW\*(C`void *data\*(C'\fR member. By redefining -this macro to a something else you can include more and other types of -members. You have to define it each time you include one of the files, -though, and it must be identical each time. -.Sp -For example, the perl \s-1EV\s0 module uses something like this: -.Sp -.Vb 3 -\& #define EV_COMMON \e -\& SV *self; /* contains this struct */ \e -\& SV *cb_sv, *fh /* note no trailing ";" */ -.Ve -.IP "\s-1EV_CB_DECLARE\s0 (type)" 4 -.IX Item "EV_CB_DECLARE (type)" -.PD 0 -.IP "\s-1EV_CB_INVOKE\s0 (watcher, revents)" 4 -.IX Item "EV_CB_INVOKE (watcher, revents)" -.IP "ev_set_cb (ev, cb)" 4 -.IX Item "ev_set_cb (ev, cb)" -.PD -Can be used to change the callback member declaration in each watcher, -and the way callbacks are invoked and set. Must expand to a struct member -definition and a statement, respectively. See the \fIev.h\fR header file for -their default definitions. One possible use for overriding these is to -avoid the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument in all cases, or to use -method calls instead of plain function calls in \*(C+. -.Sh "\s-1EXPORTED\s0 \s-1API\s0 \s-1SYMBOLS\s0" -.IX Subsection "EXPORTED API SYMBOLS" -If you need to re-export the \s-1API\s0 (e.g. via a dll) and you need a list of -exported symbols, you can use the provided \fISymbol.*\fR files which list -all public symbols, one per line: -.PP -.Vb 2 -\& Symbols.ev for libev proper -\& Symbols.event for the libevent emulation -.Ve -.PP -This can also be used to rename all public symbols to avoid clashes with -multiple versions of libev linked together (which is obviously bad in -itself, but sometimes it is inconvinient to avoid this). -.PP -A sed command like this will create wrapper \f(CW\*(C`#define\*(C'\fR's that you need to -include before including \fIev.h\fR: -.PP -.Vb 1 -\& wrap.h -.Ve -.PP -This would create a file \fIwrap.h\fR which essentially looks like this: -.PP -.Vb 4 -\& #define ev_backend myprefix_ev_backend -\& #define ev_check_start myprefix_ev_check_start -\& #define ev_check_stop myprefix_ev_check_stop -\& ... -.Ve -.Sh "\s-1EXAMPLES\s0" -.IX Subsection "EXAMPLES" -For a real-world example of a program the includes libev -verbatim, you can have a look at the \s-1EV\s0 perl module -(). It has the libev files in -the \fIlibev/\fR subdirectory and includes them in the \fI\s-1EV/EVAPI\s0.h\fR (public -interface) and \fI\s-1EV\s0.xs\fR (implementation) files. Only the \fI\s-1EV\s0.xs\fR file -will be compiled. It is pretty complex because it provides its own header -file. -.PP -The usage in rxvt-unicode is simpler. It has a \fIev_cpp.h\fR header file -that everybody includes and which overrides some configure choices: -.PP -.Vb 9 -\& #define EV_MINIMAL 1 -\& #define EV_USE_POLL 0 -\& #define EV_MULTIPLICITY 0 -\& #define EV_PERIODIC_ENABLE 0 -\& #define EV_STAT_ENABLE 0 -\& #define EV_FORK_ENABLE 0 -\& #define EV_CONFIG_H -\& #define EV_MINPRI 0 -\& #define EV_MAXPRI 0 -\& -\& #include "ev++.h" -.Ve -.PP -And a \fIev_cpp.C\fR implementation file that contains libev proper and is compiled: -.PP -.Vb 2 -\& #include "ev_cpp.h" -\& #include "ev.c" -.Ve -.SH "THREADS AND COROUTINES" -.IX Header "THREADS AND COROUTINES" -.Sh "\s-1THREADS\s0" -.IX Subsection "THREADS" -Libev itself is completely threadsafe, but it uses no locking. This -means that you can use as many loops as you want in parallel, as long as -only one thread ever calls into one libev function with the same loop -parameter. -.PP -Or put differently: calls with different loop parameters can be done in -parallel from multiple threads, calls with the same loop parameter must be -done serially (but can be done from different threads, as long as only one -thread ever is inside a call at any point in time, e.g. by using a mutex -per loop). -.PP -If you want to know which design is best for your problem, then I cannot -help you but by giving some generic advice: -.IP "\(bu" 4 -most applications have a main thread: use the default libev loop -in that thread, or create a seperate thread running only the default loop. -.Sp -This helps integrating other libraries or software modules that use libev -themselves and don't care/know about threading. -.IP "\(bu" 4 -one loop per thread is usually a good model. -.Sp -Doing this is almost never wrong, sometimes a better-performance model -exists, but it is always a good start. -.IP "\(bu" 4 -other models exist, such as the leader/follower pattern, where one -loop is handed through multiple threads in a kind of round-robbin fashion. -.Sp -Chosing a model is hard \- look around, learn, know that usually you cna do -better than you currently do :\-) -.IP "\(bu" 4 -often you need to talk to some other thread which blocks in the -event loop \- \f(CW\*(C`ev_async\*(C'\fR watchers can be used to wake them up from other -threads safely (or from signal contexts...). -.Sh "\s-1COROUTINES\s0" -.IX Subsection "COROUTINES" -Libev is much more accomodating to coroutines (\*(L"cooperative threads\*(R"): -libev fully supports nesting calls to it's functions from different -coroutines (e.g. you can call \f(CW\*(C`ev_loop\*(C'\fR on the same loop from two -different coroutines and switch freely between both coroutines running the -loop, as long as you don't confuse yourself). The only exception is that -you must not do this from \f(CW\*(C`ev_periodic\*(C'\fR reschedule callbacks. -.PP -Care has been invested into making sure that libev does not keep local -state inside \f(CW\*(C`ev_loop\*(C'\fR, and other calls do not usually allow coroutine -switches. -.SH "COMPLEXITIES" -.IX Header "COMPLEXITIES" -In this section the complexities of (many of) the algorithms used inside -libev will be explained. For complexity discussions about backends see the -documentation for \f(CW\*(C`ev_default_init\*(C'\fR. -.PP -All of the following are about amortised time: If an array needs to be -extended, libev needs to realloc and move the whole array, but this -happens asymptotically never with higher number of elements, so O(1) might -mean it might do a lengthy realloc operation in rare cases, but on average -it is much faster and asymptotically approaches constant time. -.IP "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" 4 -.IX Item "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" -This means that, when you have a watcher that triggers in one hour and -there are 100 watchers that would trigger before that then inserting will -have to skip roughly seven (\f(CW\*(C`ld 100\*(C'\fR) of these watchers. -.IP "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" 4 -.IX Item "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" -That means that changing a timer costs less than removing/adding them -as only the relative motion in the event queue has to be paid for. -.IP "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" 4 -.IX Item "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" -These just add the watcher into an array or at the head of a list. -.IP "Stopping check/prepare/idle/fork/async watchers: O(1)" 4 -.IX Item "Stopping check/prepare/idle/fork/async watchers: O(1)" -.PD 0 -.IP "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % \s-1EV_PID_HASHSIZE\s0))" 4 -.IX Item "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % EV_PID_HASHSIZE))" -.PD -These watchers are stored in lists then need to be walked to find the -correct watcher to remove. The lists are usually short (you don't usually -have many watchers waiting for the same fd or signal). -.IP "Finding the next timer in each loop iteration: O(1)" 4 -.IX Item "Finding the next timer in each loop iteration: O(1)" -By virtue of using a binary or 4\-heap, the next timer is always found at a -fixed position in the storage array. -.IP "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" 4 -.IX Item "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" -A change means an I/O watcher gets started or stopped, which requires -libev to recalculate its status (and possibly tell the kernel, depending -on backend and wether \f(CW\*(C`ev_io_set\*(C'\fR was used). -.IP "Activating one watcher (putting it into the pending state): O(1)" 4 -.IX Item "Activating one watcher (putting it into the pending state): O(1)" -.PD 0 -.IP "Priority handling: O(number_of_priorities)" 4 -.IX Item "Priority handling: O(number_of_priorities)" -.PD -Priorities are implemented by allocating some space for each -priority. When doing priority-based operations, libev usually has to -linearly search all the priorities, but starting/stopping and activating -watchers becomes O(1) w.r.t. priority handling. -.IP "Sending an ev_async: O(1)" 4 -.IX Item "Sending an ev_async: O(1)" -.PD 0 -.IP "Processing ev_async_send: O(number_of_async_watchers)" 4 -.IX Item "Processing ev_async_send: O(number_of_async_watchers)" -.IP "Processing signals: O(max_signal_number)" 4 -.IX Item "Processing signals: O(max_signal_number)" -.PD -Sending involves a syscall \fIiff\fR there were no other \f(CW\*(C`ev_async_send\*(C'\fR -calls in the current loop iteration. Checking for async and signal events -involves iterating over all running async watchers or all signal numbers. -.SH "Win32 platform limitations and workarounds" -.IX Header "Win32 platform limitations and workarounds" -Win32 doesn't support any of the standards (e.g. \s-1POSIX\s0) that libev -requires, and its I/O model is fundamentally incompatible with the \s-1POSIX\s0 -model. Libev still offers limited functionality on this platform in -the form of the \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR backend, and only supports socket -descriptors. This only applies when using Win32 natively, not when using -e.g. cygwin. -.PP -Lifting these limitations would basically require the full -re-implementation of the I/O system. If you are into these kinds of -things, then note that glib does exactly that for you in a very portable -way (note also that glib is the slowest event library known to man). -.PP -There is no supported compilation method available on windows except -embedding it into other applications. -.PP -Due to the many, low, and arbitrary limits on the win32 platform and -the abysmal performance of winsockets, using a large number of sockets -is not recommended (and not reasonable). If your program needs to use -more than a hundred or so sockets, then likely it needs to use a totally -different implementation for windows, as libev offers the \s-1POSIX\s0 readyness -notification model, which cannot be implemented efficiently on windows -(microsoft monopoly games). -.IP "The winsocket select function" 4 -.IX Item "The winsocket select function" -The winsocket \f(CW\*(C`select\*(C'\fR function doesn't follow \s-1POSIX\s0 in that it requires -socket \fIhandles\fR and not socket \fIfile descriptors\fR. This makes select -very inefficient, and also requires a mapping from file descriptors -to socket handles. See the discussion of the \f(CW\*(C`EV_SELECT_USE_FD_SET\*(C'\fR, -\&\f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR and \f(CW\*(C`EV_FD_TO_WIN32_HANDLE\*(C'\fR preprocessor -symbols for more info. -.Sp -The configuration for a \*(L"naked\*(R" win32 using the microsoft runtime -libraries and raw winsocket select is: -.Sp -.Vb 2 -\& #define EV_USE_SELECT 1 -\& #define EV_SELECT_IS_WINSOCKET 1 /* forces EV_SELECT_USE_FD_SET, too */ -.Ve -.Sp -Note that winsockets handling of fd sets is O(n), so you can easily get a -complexity in the O(nA\*^X) range when using win32. -.IP "Limited number of file descriptors" 4 -.IX Item "Limited number of file descriptors" -Windows has numerous arbitrary (and low) limits on things. -.Sp -Early versions of winsocket's select only supported waiting for a maximum -of \f(CW64\fR handles (probably owning to the fact that all windows kernels -can only wait for \f(CW64\fR things at the same time internally; microsoft -recommends spawning a chain of threads and wait for 63 handles and the -previous thread in each. Great). -.Sp -Newer versions support more handles, but you need to define \f(CW\*(C`FD_SETSIZE\*(C'\fR -to some high number (e.g. \f(CW2048\fR) before compiling the winsocket select -call (which might be in libev or elsewhere, for example, perl does its own -select emulation on windows). -.Sp -Another limit is the number of file descriptors in the microsoft runtime -libraries, which by default is \f(CW64\fR (there must be a hidden \fI64\fR fetish -or something like this inside microsoft). You can increase this by calling -\&\f(CW\*(C`_setmaxstdio\*(C'\fR, which can increase this limit to \f(CW2048\fR (another -arbitrary limit), but is broken in many versions of the microsoft runtime -libraries. -.Sp -This might get you to about \f(CW512\fR or \f(CW2048\fR sockets (depending on -windows version and/or the phase of the moon). To get more, you need to -wrap all I/O functions and provide your own fd management, but the cost of -calling select (O(nA\*^X)) will likely make this unworkable. -.SH "PORTABILITY REQUIREMENTS" -.IX Header "PORTABILITY REQUIREMENTS" -In addition to a working ISO-C implementation, libev relies on a few -additional extensions: -.ie n .IP """sig_atomic_t volatile"" must be thread-atomic as well" 4 -.el .IP "\f(CWsig_atomic_t volatile\fR must be thread-atomic as well" 4 -.IX Item "sig_atomic_t volatile must be thread-atomic as well" -The type \f(CW\*(C`sig_atomic_t volatile\*(C'\fR (or whatever is defined as -\&\f(CW\*(C`EV_ATOMIC_T\*(C'\fR) must be atomic w.r.t. accesses from different -threads. This is not part of the specification for \f(CW\*(C`sig_atomic_t\*(C'\fR, but is -believed to be sufficiently portable. -.ie n .IP """sigprocmask"" must work in a threaded environment" 4 -.el .IP "\f(CWsigprocmask\fR must work in a threaded environment" 4 -.IX Item "sigprocmask must work in a threaded environment" -Libev uses \f(CW\*(C`sigprocmask\*(C'\fR to temporarily block signals. This is not -allowed in a threaded program (\f(CW\*(C`pthread_sigmask\*(C'\fR has to be used). Typical -pthread implementations will either allow \f(CW\*(C`sigprocmask\*(C'\fR in the \*(L"main -thread\*(R" or will block signals process-wide, both behaviours would -be compatible with libev. Interaction between \f(CW\*(C`sigprocmask\*(C'\fR and -\&\f(CW\*(C`pthread_sigmask\*(C'\fR could complicate things, however. -.Sp -The most portable way to handle signals is to block signals in all threads -except the initial one, and run the default loop in the initial thread as -well. -.ie n .IP """long"" must be large enough for common memory allocation sizes" 4 -.el .IP "\f(CWlong\fR must be large enough for common memory allocation sizes" 4 -.IX Item "long must be large enough for common memory allocation sizes" -To improve portability and simplify using libev, libev uses \f(CW\*(C`long\*(C'\fR -internally instead of \f(CW\*(C`size_t\*(C'\fR when allocating its data structures. On -non-POSIX systems (Microsoft...) this might be unexpectedly low, but -is still at least 31 bits everywhere, which is enough for hundreds of -millions of watchers. -.ie n .IP """double"" must hold a time value in seconds with enough accuracy" 4 -.el .IP "\f(CWdouble\fR must hold a time value in seconds with enough accuracy" 4 -.IX Item "double must hold a time value in seconds with enough accuracy" -The type \f(CW\*(C`double\*(C'\fR is used to represent timestamps. It is required to -have at least 51 bits of mantissa (and 9 bits of exponent), which is good -enough for at least into the year 4000. This requirement is fulfilled by -implementations implementing \s-1IEEE\s0 754 (basically all existing ones). -.PP -If you know of other additional requirements drop me a note. -.SH "AUTHOR" -.IX Header "AUTHOR" -Marc Lehmann . -.SH "POD ERRORS" -.IX Header "POD ERRORS" -Hey! \fBThe above document had some coding errors, which are explained below:\fR -.IP "Around line 3052:" 4 -.IX Item "Around line 3052:" -You forgot a '=back' before '=head2' diff --git a/deps/uv/eio/eio.c b/deps/uv/eio/eio.c deleted file mode 100644 index 7f48add401..0000000000 --- a/deps/uv/eio/eio.c +++ /dev/null @@ -1,2133 +0,0 @@ -/* - * libeio implementation - * - * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -#include "eio.h" - -#ifdef EIO_STACKSIZE -# define XTHREAD_STACKSIZE EIO_STACKSIZE -#endif - -// For statically-linked pthreads-w32, use: -// #ifdef _WIN32 -// # define PTW32_STATIC_LIB 1 -// #endif -#include "xthread.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef _WIN32 -#include -#endif - -#ifndef EIO_FINISH -# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 -#endif - -#ifndef EIO_DESTROY -# define EIO_DESTROY(req) do { if ((req)->destroy) (req)->destroy (req); } while (0) -#endif - -#ifndef EIO_FEED -# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) -#endif - -#ifdef _WIN32 - -# include -# include -# include -# include -# include -# include -# include - -# define ENOTSOCK WSAENOTSOCK -# define EOPNOTSUPP WSAEOPNOTSUPP -# define ECANCELED 140 - -# ifndef EIO_STRUCT_DIRENT -# define EIO_STRUCT_DIRENT struct dirent -# endif - -#else - -# ifdef EIO_CONFIG_H -# include EIO_CONFIG_H -# else -# include "config.h" -# endif - -# include -# include -# include -# include -# include -# include - -#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES -# include -#endif - -/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ -# if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ -# define _DIRENT_HAVE_D_TYPE /* sigh */ -# define D_INO(de) (de)->d_fileno -# define D_NAMLEN(de) (de)->d_namlen -# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 -# define D_INO(de) (de)->d_ino -# endif - -#ifdef _D_EXACT_NAMLEN -# undef D_NAMLEN -# define D_NAMLEN(de) _D_EXACT_NAMLEN (de) -#endif - -# ifdef _DIRENT_HAVE_D_TYPE -# define D_TYPE(de) (de)->d_type -# endif - -# ifndef EIO_STRUCT_DIRENT -# define EIO_STRUCT_DIRENT struct dirent -# endif - -#endif - -#if HAVE_SENDFILE -# if __linux -# include -# elif __FreeBSD__ || defined __APPLE__ -# include -# include -# elif __hpux -# include -# elif __solaris -# include -# else -# error sendfile support requested but not available -# endif -#endif - -#ifndef D_TYPE -# define D_TYPE(de) 0 -#endif -#ifndef D_INO -# define D_INO(de) 0 -#endif -#ifndef D_NAMLEN -# define D_NAMLEN(de) strlen ((de)->d_name) -#endif - -/* number of seconds after which an idle threads exit */ -#define IDLE_TIMEOUT 10 - -/* used for struct dirent, AIX doesn't provide it */ -#ifndef NAME_MAX -# define NAME_MAX 4096 -#endif - -/* used for readlink etc. */ -#ifndef PATH_MAX -# define PATH_MAX 4096 -#endif - -/* buffer size for various temporary buffers */ -#define EIO_BUFSIZE 65536 - -#define dBUF \ - char *eio_buf; \ - ETP_WORKER_LOCK (self); \ - self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ - ETP_WORKER_UNLOCK (self); \ - errno = ENOMEM; \ - if (!eio_buf) \ - return -1; - -#define EIO_TICKS ((1000000 + 1023) >> 10) - -/*****************************************************************************/ - -#if __GNUC__ >= 3 -# define expect(expr,value) __builtin_expect ((expr),(value)) -#else -# define expect(expr,value) (expr) -#endif - -#define expect_false(expr) expect ((expr) != 0, 0) -#define expect_true(expr) expect ((expr) != 0, 1) - -/*****************************************************************************/ - -#define ETP_PRI_MIN EIO_PRI_MIN -#define ETP_PRI_MAX EIO_PRI_MAX - -struct etp_worker; - -#define ETP_REQ eio_req -#define ETP_DESTROY(req) eio_destroy (req) -static int eio_finish (eio_req *req); -#define ETP_FINISH(req) eio_finish (req) -static void eio_execute (struct etp_worker *self, eio_req *req); -#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) - -#define ETP_WORKER_CLEAR(req) \ - if (wrk->dbuf) \ - { \ - free (wrk->dbuf); \ - wrk->dbuf = 0; \ - } \ - \ - if (wrk->dirp) \ - { \ - closedir (wrk->dirp); \ - wrk->dirp = 0; \ - } - -#define ETP_WORKER_COMMON \ - void *dbuf; \ - DIR *dirp; - -/*****************************************************************************/ - -#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) - -/* calculate time difference in ~1/EIO_TICKS of a second */ -static int tvdiff (struct timeval *tv1, struct timeval *tv2) -{ - return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS - + ((tv2->tv_usec - tv1->tv_usec) >> 10); -} - -static unsigned int started, idle, wanted = 4; - -static void (*want_poll_cb) (void); -static void (*done_poll_cb) (void); - -static unsigned int max_poll_time; /* reslock */ -static unsigned int max_poll_reqs; /* reslock */ - -static volatile unsigned int nreqs; /* reqlock */ -static volatile unsigned int nready; /* reqlock */ -static volatile unsigned int npending; /* reqlock */ -static volatile unsigned int max_idle = 4; - -static xmutex_t wrklock = X_MUTEX_INIT; -static xmutex_t reslock = X_MUTEX_INIT; -static xmutex_t reqlock = X_MUTEX_INIT; -static xcond_t reqwait = X_COND_INIT; - -#if defined (__APPLE__) -static xmutex_t apple_bug_writelock = X_MUTEX_INIT; -#endif - -#if !HAVE_PREADWRITE -/* - * make our pread/pwrite emulation safe against themselves, but not against - * normal read/write by using a mutex. slows down execution a lot, - * but that's your problem, not mine. - */ -static xmutex_t preadwritelock = X_MUTEX_INIT; -#endif - -typedef struct etp_worker -{ - /* locked by wrklock */ - struct etp_worker *prev, *next; - - xthread_t tid; - - /* locked by reslock, reqlock or wrklock */ - ETP_REQ *req; /* currently processed request */ - - ETP_WORKER_COMMON -} etp_worker; - -static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ - -#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) -#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) - -/* worker threads management */ - -static void etp_worker_clear (etp_worker *wrk) -{ - ETP_WORKER_CLEAR (wrk); -} - -static void etp_worker_free (etp_worker *wrk) -{ - wrk->next->prev = wrk->prev; - wrk->prev->next = wrk->next; - - free (wrk); -} - -static unsigned int etp_nreqs (void) -{ - int retval; - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = nreqs; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - return retval; -} - -static unsigned int etp_nready (void) -{ - unsigned int retval; - - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = nready; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - - return retval; -} - -static unsigned int etp_npending (void) -{ - unsigned int retval; - - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = npending; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - - return retval; -} - -static unsigned int etp_nthreads (void) -{ - unsigned int retval; - - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = started; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - - return retval; -} - -/* - * a somewhat faster data structure might be nice, but - * with 8 priorities this actually needs <20 insns - * per shift, the most expensive operation. - */ -typedef struct { - ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ - int size; -} etp_reqq; - -static etp_reqq req_queue; -static etp_reqq res_queue; - -static int reqq_push (etp_reqq *q, ETP_REQ *req) -{ - int pri = req->pri; - req->next = 0; - - if (q->qe[pri]) - { - q->qe[pri]->next = req; - q->qe[pri] = req; - } - else - q->qe[pri] = q->qs[pri] = req; - - return q->size++; -} - -static ETP_REQ *reqq_shift (etp_reqq *q) -{ - int pri; - - if (!q->size) - return 0; - - --q->size; - - for (pri = ETP_NUM_PRI; pri--; ) - { - eio_req *req = q->qs[pri]; - - if (req) - { - if (!(q->qs[pri] = (eio_req *)req->next)) - q->qe[pri] = 0; - - return req; - } - } - - abort (); -} - -static void etp_atfork_prepare (void) -{ - X_LOCK (wrklock); - X_LOCK (reqlock); - X_LOCK (reslock); -#if !HAVE_PREADWRITE - X_LOCK (preadwritelock); -#endif -} - -static void etp_atfork_parent (void) -{ -#if !HAVE_PREADWRITE - X_UNLOCK (preadwritelock); -#endif - X_UNLOCK (reslock); - X_UNLOCK (reqlock); - X_UNLOCK (wrklock); -} - -static void etp_atfork_child (void) -{ - ETP_REQ *prv; - - while ((prv = reqq_shift (&req_queue))) - ETP_DESTROY (prv); - - while ((prv = reqq_shift (&res_queue))) - ETP_DESTROY (prv); - - while (wrk_first.next != &wrk_first) - { - etp_worker *wrk = wrk_first.next; - - if (wrk->req) - ETP_DESTROY (wrk->req); - - etp_worker_clear (wrk); - etp_worker_free (wrk); - } - - started = 0; - idle = 0; - nreqs = 0; - nready = 0; - npending = 0; - - etp_atfork_parent (); -} - -static void -etp_once_init (void) -{ - X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); -} - -static int -etp_init (void (*want_poll)(void), void (*done_poll)(void)) -{ - static pthread_once_t doinit = PTHREAD_ONCE_INIT; - - pthread_once (&doinit, etp_once_init); - - want_poll_cb = want_poll; - done_poll_cb = done_poll; - - return 0; -} - -X_THREAD_PROC (etp_proc); - -static void etp_start_thread (void) -{ - etp_worker *wrk = calloc (1, sizeof (etp_worker)); - - /*TODO*/ - assert (("unable to allocate worker thread data", wrk)); - - X_LOCK (wrklock); - - if (thread_create (&wrk->tid, etp_proc, (void *)wrk)) - { - wrk->prev = &wrk_first; - wrk->next = wrk_first.next; - wrk_first.next->prev = wrk; - wrk_first.next = wrk; - ++started; - } - else - free (wrk); - - X_UNLOCK (wrklock); -} - -static void etp_maybe_start_thread (void) -{ - if (expect_true (etp_nthreads () >= wanted)) - return; - - /* todo: maybe use idle here, but might be less exact */ - if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) - return; - - etp_start_thread (); -} - -static void etp_end_thread (void) -{ - eio_req *req = calloc (1, sizeof (eio_req)); - - req->type = -1; - req->pri = ETP_PRI_MAX - ETP_PRI_MIN; - - X_LOCK (reqlock); - reqq_push (&req_queue, req); - X_COND_SIGNAL (reqwait); - X_UNLOCK (reqlock); - - X_LOCK (wrklock); - --started; - X_UNLOCK (wrklock); -} - -static int etp_poll (void) -{ - unsigned int maxreqs; - unsigned int maxtime; - struct timeval tv_start, tv_now; - - X_LOCK (reslock); - maxreqs = max_poll_reqs; - maxtime = max_poll_time; - X_UNLOCK (reslock); - - if (maxtime) - gettimeofday (&tv_start, 0); - - for (;;) - { - ETP_REQ *req; - - etp_maybe_start_thread (); - - X_LOCK (reslock); - req = reqq_shift (&res_queue); - - if (req) - { - --npending; - - if (!res_queue.size && done_poll_cb) - done_poll_cb (); - } - - X_UNLOCK (reslock); - - if (!req) - return 0; - - X_LOCK (reqlock); - --nreqs; - X_UNLOCK (reqlock); - - if (expect_false (req->type == EIO_GROUP && req->size)) - { - req->int1 = 1; /* mark request as delayed */ - continue; - } - else - { - int res = ETP_FINISH (req); - if (expect_false (res)) - return res; - } - - if (expect_false (maxreqs && !--maxreqs)) - break; - - if (maxtime) - { - gettimeofday (&tv_now, 0); - - if (tvdiff (&tv_start, &tv_now) >= maxtime) - break; - } - } - - errno = EAGAIN; - return -1; -} - -static void etp_cancel (ETP_REQ *req) -{ - X_LOCK (wrklock); - req->flags |= EIO_FLAG_CANCELLED; - X_UNLOCK (wrklock); - - eio_grp_cancel (req); -} - -static void etp_submit (ETP_REQ *req) -{ - req->pri -= ETP_PRI_MIN; - - if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; - if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; - - if (expect_false (req->type == EIO_GROUP)) - { - /* I hope this is worth it :/ */ - X_LOCK (reqlock); - ++nreqs; - X_UNLOCK (reqlock); - - X_LOCK (reslock); - - ++npending; - - if (!reqq_push (&res_queue, req) && want_poll_cb) - want_poll_cb (); - - X_UNLOCK (reslock); - } - else - { - X_LOCK (reqlock); - ++nreqs; - ++nready; - reqq_push (&req_queue, req); - X_COND_SIGNAL (reqwait); - X_UNLOCK (reqlock); - - etp_maybe_start_thread (); - } -} - -static void etp_set_max_poll_time (double nseconds) -{ - if (WORDACCESS_UNSAFE) X_LOCK (reslock); - max_poll_time = nseconds * EIO_TICKS; - if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); -} - -static void etp_set_max_poll_reqs (unsigned int maxreqs) -{ - if (WORDACCESS_UNSAFE) X_LOCK (reslock); - max_poll_reqs = maxreqs; - if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); -} - -static void etp_set_max_idle (unsigned int nthreads) -{ - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - max_idle = nthreads <= 0 ? 1 : nthreads; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); -} - -static void etp_set_min_parallel (unsigned int nthreads) -{ - if (wanted < nthreads) - wanted = nthreads; -} - -static void etp_set_max_parallel (unsigned int nthreads) -{ - if (wanted > nthreads) - wanted = nthreads; - - while (started > wanted) - etp_end_thread (); -} - -/*****************************************************************************/ - -static void grp_try_feed (eio_req *grp) -{ - while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) - { - grp->flags &= ~EIO_FLAG_GROUPADD; - - EIO_FEED (grp); - - /* stop if no progress has been made */ - if (!(grp->flags & EIO_FLAG_GROUPADD)) - { - grp->feed = 0; - break; - } - } -} - -static int grp_dec (eio_req *grp) -{ - --grp->size; - - /* call feeder, if applicable */ - grp_try_feed (grp); - - /* finish, if done */ - if (!grp->size && grp->int1) - return eio_finish (grp); - else - return 0; -} - -void eio_destroy (eio_req *req) -{ - if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); - if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); - - EIO_DESTROY (req); -} - -static int eio_finish (eio_req *req) -{ - int res = EIO_FINISH (req); - - if (req->grp) - { - int res2; - eio_req *grp = req->grp; - - /* unlink request */ - if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; - if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; - - if (grp->grp_first == req) - grp->grp_first = req->grp_next; - - res2 = grp_dec (grp); - - if (!res && res2) - res = res2; - } - - eio_destroy (req); - - return res; -} - -void eio_grp_cancel (eio_req *grp) -{ - for (grp = grp->grp_first; grp; grp = grp->grp_next) - eio_cancel (grp); -} - -void eio_cancel (eio_req *req) -{ - etp_cancel (req); -} - -void eio_submit (eio_req *req) -{ - etp_submit (req); -} - -unsigned int eio_nreqs (void) -{ - return etp_nreqs (); -} - -unsigned int eio_nready (void) -{ - return etp_nready (); -} - -unsigned int eio_npending (void) -{ - return etp_npending (); -} - -unsigned int eio_nthreads (void) -{ - return etp_nthreads (); -} - -void eio_set_max_poll_time (double nseconds) -{ - etp_set_max_poll_time (nseconds); -} - -void eio_set_max_poll_reqs (unsigned int maxreqs) -{ - etp_set_max_poll_reqs (maxreqs); -} - -void eio_set_max_idle (unsigned int nthreads) -{ - etp_set_max_idle (nthreads); -} - -void eio_set_min_parallel (unsigned int nthreads) -{ - etp_set_min_parallel (nthreads); -} - -void eio_set_max_parallel (unsigned int nthreads) -{ - etp_set_max_parallel (nthreads); -} - -int eio_poll (void) -{ - return etp_poll (); -} - -/*****************************************************************************/ -/* work around various missing functions */ - -#if !HAVE_PREADWRITE -# undef pread -# undef pwrite -# define pread eio__pread -# define pwrite eio__pwrite - -ssize_t -eio__pread (int fd, void *buf, size_t count, off_t offset) -{ - ssize_t res; - off_t ooffset; - - X_LOCK (preadwritelock); - ooffset = lseek (fd, 0, SEEK_CUR); - lseek (fd, offset, SEEK_SET); - res = read (fd, buf, count); - lseek (fd, ooffset, SEEK_SET); - X_UNLOCK (preadwritelock); - - return res; -} - -ssize_t -eio__pwrite (int fd, void *buf, size_t count, off_t offset) -{ - ssize_t res; - off_t ooffset; - - X_LOCK (preadwritelock); - ooffset = lseek (fd, 0, SEEK_CUR); - lseek (fd, offset, SEEK_SET); - res = write (fd, buf, count); - lseek (fd, ooffset, SEEK_SET); - X_UNLOCK (preadwritelock); - - return res; -} -#endif - -#ifndef HAVE_UTIMES - -# undef utimes -# define utimes(path,times) eio__utimes (path, times) - -static int -eio__utimes (const char *filename, const struct timeval times[2]) -{ - if (times) - { - struct utimbuf buf; - - buf.actime = times[0].tv_sec; - buf.modtime = times[1].tv_sec; - - return utime (filename, &buf); - } - else - return utime (filename, 0); -} - -#endif - -#ifndef HAVE_FUTIMES - -# undef futimes -# define futimes(fd,times) eio__futimes (fd, times) - -static int eio__futimes (int fd, const struct timeval tv[2]) -{ - errno = ENOSYS; - return -1; -} - -#endif - -#ifdef _WIN32 -# define fsync(fd) (FlushFileBuffers((HANDLE)_get_osfhandle(fd)) ? 0 : -1) -#endif - -#if !HAVE_FDATASYNC -# undef fdatasync -# define fdatasync(fd) fsync (fd) -#endif - -// Use unicode and big file aware stat on windows -#ifdef _WIN32 -# undef stat -# undef fstat -# define stat _stati64 -# define fstat _fstati64 -#endif - -/* sync_file_range always needs emulation */ -int -eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) -{ -#if HAVE_SYNC_FILE_RANGE - int res; - - if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE - || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE - || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) - { - flags = 0 - | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) - | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) - | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); - } - - res = sync_file_range (fd, offset, nbytes, flags); - - if (!res || errno != ENOSYS) - return res; -#endif - - /* even though we could play tricks with the flags, it's better to always - * call fdatasync, as that matches the expectation of its users best */ - return fdatasync (fd); -} - -#if !HAVE_READAHEAD -# undef readahead -# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) - -static ssize_t -eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) -{ - size_t todo = count; - dBUF; - - while (todo > 0) - { - size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE; - - pread (fd, eio_buf, len, offset); - offset += len; - todo -= len; - } - - errno = 0; - return count; -} - -#endif - -/* sendfile always needs emulation */ -static ssize_t -eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) -{ - ssize_t res; - - if (!count) - return 0; - -#if HAVE_SENDFILE -# if __linux - res = sendfile (ofd, ifd, &offset, count); - -# elif __FreeBSD__ - /* - * Of course, the freebsd sendfile is a dire hack with no thoughts - * wasted on making it similar to other I/O functions. - */ - { - off_t sbytes; - res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); - - #if 0 /* according to the manpage, this is correct, but broken behaviour */ - /* freebsd' sendfile will return 0 on success */ - /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ - /* not on e.g. EIO or EPIPE - sounds broken */ - if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) - res = sbytes; - #endif - - /* according to source inspection, this is correct, and useful behaviour */ - if (sbytes) - res = sbytes; - } - -# elif defined (__APPLE__) - - { - off_t sbytes = count; - res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); - - /* according to the manpage, sbytes is always valid */ - if (sbytes) - res = sbytes; - } - -# elif __hpux - res = sendfile (ofd, ifd, offset, count, 0, 0); - -# elif __solaris - { - struct sendfilevec vec; - size_t sbytes; - - vec.sfv_fd = ifd; - vec.sfv_flag = 0; - vec.sfv_off = offset; - vec.sfv_len = count; - - res = sendfilev (ofd, &vec, 1, &sbytes); - - if (res < 0 && sbytes) - res = sbytes; - } - -# endif - -//#elif defined (_WIN32) -// -// /* does not work, just for documentation of what would need to be done */ -// { -// HANDLE h = TO_SOCKET (ifd); -// SetFilePointer (h, offset, 0, FILE_BEGIN); -// res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); -// } - -#else - res = -1; - errno = ENOSYS; -#endif - - if (res < 0 - && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK - /* BSDs */ -#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ - || errno == ENOTSUP -#endif - || errno == EOPNOTSUPP /* BSDs */ -#if __solaris - || errno == EAFNOSUPPORT || errno == EPROTOTYPE -#endif - ) - ) - { - /* emulate sendfile. this is a major pain in the ass */ - dBUF; - - res = 0; - - while (count) - { - ssize_t cnt; - - cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); - - if (cnt <= 0) - { - if (cnt && !res) res = -1; - break; - } - - cnt = write (ofd, eio_buf, cnt); - - if (cnt <= 0) - { - if (cnt && !res) res = -1; - break; - } - - offset += cnt; - res += cnt; - count -= cnt; - } - } - - return res; -} - -static signed char -eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) -{ - return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ - : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; -} - -#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 - -#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ -#define EIO_SORT_FAST 60 /* when to only use insertion sort */ - -static void -eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) -{ - unsigned char bits [9 + sizeof (ino_t) * 8]; - unsigned char *bit = bits; - - assert (CHAR_BIT == 8); - assert (sizeof (eio_dirent) * 8 < 256); - assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */ - assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */ - - if (size <= EIO_SORT_FAST) - return; - - /* first prepare an array of bits to test in our radix sort */ - /* try to take endianness into account, as well as differences in ino_t sizes */ - /* inode_bits must contain all inodes ORed together */ - /* which is used to skip bits that are 0 everywhere, which is very common */ - { - ino_t endianness; - int i, j; - - /* we store the byte offset of byte n into byte n of "endianness" */ - for (i = 0; i < sizeof (ino_t); ++i) - ((unsigned char *)&endianness)[i] = i; - - *bit++ = 0; - - for (i = 0; i < sizeof (ino_t); ++i) - { - /* shifting off the byte offsets out of "endianness" */ - int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; - endianness >>= 8; - - for (j = 0; j < 8; ++j) - if (inode_bits & (((ino_t)1) << (i * 8 + j))) - *bit++ = offs + j; - } - - for (j = 0; j < 8; ++j) - if (score_bits & (1 << j)) - *bit++ = offsetof (eio_dirent, score) * 8 + j; - } - - /* now actually do the sorting (a variant of MSD radix sort) */ - { - eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base; - eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end; - unsigned char *bit_stk [9 + sizeof (ino_t) * 8]; - int stk_idx = 0; - - base_stk [stk_idx] = dents; - end_stk [stk_idx] = dents + size; - bit_stk [stk_idx] = bit - 1; - - do - { - base = base_stk [stk_idx]; - end = end_stk [stk_idx]; - bit = bit_stk [stk_idx]; - - for (;;) - { - unsigned char O = *bit >> 3; - unsigned char M = 1 << (*bit & 7); - - eio_dirent *a = base; - eio_dirent *b = end; - - if (b - a < EIO_SORT_CUTOFF) - break; - - /* now bit-partition the array on the bit */ - /* this ugly asymmetric loop seems to perform much better than typical */ - /* partition algos found in the literature */ - do - if (!(((unsigned char *)a)[O] & M)) - ++a; - else if (!(((unsigned char *)--b)[O] & M)) - { - eio_dirent tmp = *a; *a = *b; *b = tmp; - ++a; - } - while (b > a); - - /* next bit, or stop, if no bits left in this path */ - if (!*--bit) - break; - - base_stk [stk_idx] = a; - end_stk [stk_idx] = end; - bit_stk [stk_idx] = bit; - ++stk_idx; - - end = a; - } - } - while (stk_idx--); - } -} - -static void -eio_dent_insertion_sort (eio_dirent *dents, int size) -{ - /* first move the smallest element to the front, to act as a sentinel */ - { - int i; - eio_dirent *min = dents; - - /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ - for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) - if (EIO_DENT_CMP (dents [i], <, *min)) - min = &dents [i]; - - /* swap elements 0 and j (minimum) */ - { - eio_dirent tmp = *dents; *dents = *min; *min = tmp; - } - } - - /* then do standard insertion sort, assuming that all elements are >= dents [0] */ - { - eio_dirent *i, *j; - - for (i = dents + 1; i < dents + size; ++i) - { - eio_dirent value = *i; - - for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) - j [1] = j [0]; - - j [1] = value; - } - } -} - -static void -eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) -{ - if (size <= 1) - return; /* our insertion sort relies on size > 0 */ - - /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ - /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ - eio_dent_radix_sort (dents, size, score_bits, inode_bits); - - /* use an insertion sort at the end, or for small arrays, */ - /* as insertion sort is more efficient for small partitions */ - eio_dent_insertion_sort (dents, size); -} - -/* read a full directory */ -static void -eio__scandir (eio_req *req, etp_worker *self) -{ - DIR *dirp; - EIO_STRUCT_DIRENT *entp; - char *name, *names; - int namesalloc = 4096; - int namesoffs = 0; - int flags = req->int1; - eio_dirent *dents = 0; - int dentalloc = 128; - int dentoffs = 0; - ino_t inode_bits = 0; - - req->result = -1; - - if (!(flags & EIO_READDIR_DENTS)) - flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); - - X_LOCK (wrklock); - /* the corresponding closedir is in ETP_WORKER_CLEAR */ - self->dirp = dirp = opendir (req->ptr1); - req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; - req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; - req->ptr2 = names = malloc (namesalloc); - X_UNLOCK (wrklock); - - if (dirp && names && (!flags || dents)) - for (;;) - { - errno = 0; - entp = readdir (dirp); - - if (!entp) - { - if (errno) - break; - - /* sort etc. */ - req->int1 = flags; - req->result = dentoffs; - - if (flags & EIO_READDIR_STAT_ORDER) - eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */ - else if (flags & EIO_READDIR_DIRS_FIRST) - if (flags & EIO_READDIR_FOUND_UNKNOWN) - eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ - else - { - /* in this case, all is known, and we just put dirs first and sort them */ - eio_dirent *oth = dents + dentoffs; - eio_dirent *dir = dents; - - /* now partition dirs to the front, and non-dirs to the back */ - /* by walking from both sides and swapping if necessary */ - /* also clear score, so it doesn't influence sorting */ - while (oth > dir) - { - if (dir->type == EIO_DT_DIR) - ++dir; - else if ((--oth)->type == EIO_DT_DIR) - { - eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; - - ++dir; - } - } - - /* now sort the dirs only */ - eio_dent_sort (dents, dir - dents, 0, inode_bits); - } - - break; - } - - /* now add the entry to our list(s) */ - name = entp->d_name; - - /* skip . and .. entries */ - if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) - { - int len = D_NAMLEN (entp) + 1; - - while (expect_false (namesoffs + len > namesalloc)) - { - namesalloc *= 2; - X_LOCK (wrklock); - req->ptr2 = names = realloc (names, namesalloc); - X_UNLOCK (wrklock); - - if (!names) - break; - } - - memcpy (names + namesoffs, name, len); - - if (dents) - { - struct eio_dirent *ent; - - if (expect_false (dentoffs == dentalloc)) - { - dentalloc *= 2; - X_LOCK (wrklock); - req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); - X_UNLOCK (wrklock); - - if (!dents) - break; - } - - ent = dents + dentoffs; - - ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ - ent->namelen = len - 1; - ent->inode = D_INO (entp); - - inode_bits |= ent->inode; - - switch (D_TYPE (entp)) - { - default: - ent->type = EIO_DT_UNKNOWN; - flags |= EIO_READDIR_FOUND_UNKNOWN; - break; - - #ifdef DT_FIFO - case DT_FIFO: ent->type = EIO_DT_FIFO; break; - #endif - #ifdef DT_CHR - case DT_CHR: ent->type = EIO_DT_CHR; break; - #endif - #ifdef DT_MPC - case DT_MPC: ent->type = EIO_DT_MPC; break; - #endif - #ifdef DT_DIR - case DT_DIR: ent->type = EIO_DT_DIR; break; - #endif - #ifdef DT_NAM - case DT_NAM: ent->type = EIO_DT_NAM; break; - #endif - #ifdef DT_BLK - case DT_BLK: ent->type = EIO_DT_BLK; break; - #endif - #ifdef DT_MPB - case DT_MPB: ent->type = EIO_DT_MPB; break; - #endif - #ifdef DT_REG - case DT_REG: ent->type = EIO_DT_REG; break; - #endif - #ifdef DT_NWK - case DT_NWK: ent->type = EIO_DT_NWK; break; - #endif - #ifdef DT_CMP - case DT_CMP: ent->type = EIO_DT_CMP; break; - #endif - #ifdef DT_LNK - case DT_LNK: ent->type = EIO_DT_LNK; break; - #endif - #ifdef DT_SOCK - case DT_SOCK: ent->type = EIO_DT_SOCK; break; - #endif - #ifdef DT_DOOR - case DT_DOOR: ent->type = EIO_DT_DOOR; break; - #endif - #ifdef DT_WHT - case DT_WHT: ent->type = EIO_DT_WHT; break; - #endif - } - - ent->score = 7; - - if (flags & EIO_READDIR_DIRS_FIRST) - { - if (ent->type == EIO_DT_UNKNOWN) - { - if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ - ent->score = 1; - else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ - ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ - } - else if (ent->type == EIO_DT_DIR) - ent->score = 0; - } - } - - namesoffs += len; - ++dentoffs; - } - - if (EIO_CANCELLED (req)) - { - errno = ECANCELED; - break; - } - } -} - -#ifdef PAGESIZE -# define eio_pagesize() PAGESIZE - -#elif defined(_WIN32) - /* Windows */ - static intptr_t - eio_pagesize (void) - { - SYSTEM_INFO si; - GetSystemInfo(&si); - return si.dwPageSize; - } - -#else - /* POSIX */ - static intptr_t - eio_pagesize (void) - { - static intptr_t page; - - if (!page) - page = sysconf (_SC_PAGESIZE); - - return page; - } -#endif - -static void -eio_page_align (void **addr, size_t *length) -{ - intptr_t mask = eio_pagesize () - 1; - - /* round down addr */ - intptr_t adj = mask & (intptr_t)*addr; - - *addr = (void *)((intptr_t)*addr - adj); - *length += adj; - - /* round up length */ - *length = (*length + mask) & ~mask; -} - -#if !_POSIX_MEMLOCK -# define eio__mlockall(a) ((errno = ENOSYS), -1) -#else - -static int -eio__mlockall (int flags) -{ - #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 - extern int mallopt (int, int); - mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ - #endif - - if (EIO_MCL_CURRENT != MCL_CURRENT - || EIO_MCL_FUTURE != MCL_FUTURE) - { - flags = 0 - | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) - | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); - } - - return mlockall (flags); -} -#endif - -#if !_POSIX_MEMLOCK_RANGE -# define eio__mlock(a,b) ((errno = ENOSYS), -1) -#else - -static int -eio__mlock (void *addr, size_t length) -{ - eio_page_align (&addr, &length); - - return mlock (addr, length); -} - -#endif - -#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) -# define eio__msync(a,b,c) ((errno = ENOSYS), -1) -#else - -int -eio__msync (void *mem, size_t len, int flags) -{ - eio_page_align (&mem, &len); - - if (EIO_MS_ASYNC != MS_SYNC - || EIO_MS_INVALIDATE != MS_INVALIDATE - || EIO_MS_SYNC != MS_SYNC) - { - flags = 0 - | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) - | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) - | (flags & EIO_MS_SYNC ? MS_SYNC : 0); - } - - return msync (mem, len, flags); -} - -#endif - -int -eio__mtouch (void *mem, size_t len, int flags) -{ - eio_page_align (&mem, &len); - - { - intptr_t addr = (intptr_t)mem; - intptr_t end = addr + len; - intptr_t page = eio_pagesize (); - - if (addr < end) - if (flags & EIO_MT_MODIFY) /* modify */ - do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); - else - do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); - } - - return 0; -} - -/*****************************************************************************/ - -#define ALLOC(len) \ - if (!req->ptr2) \ - { \ - X_LOCK (wrklock); \ - req->flags |= EIO_FLAG_PTR2_FREE; \ - X_UNLOCK (wrklock); \ - req->ptr2 = malloc (len); \ - if (!req->ptr2) \ - { \ - errno = ENOMEM; \ - req->result = -1; \ - break; \ - } \ - } - -X_THREAD_PROC (etp_proc) -{ - ETP_REQ *req; - struct timespec ts; - etp_worker *self = (etp_worker *)thr_arg; - - /* try to distribute timeouts somewhat randomly */ - ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); - - for (;;) - { - X_LOCK (reqlock); - - for (;;) - { - self->req = req = reqq_shift (&req_queue); - - if (req) - break; - - ++idle; - - ts.tv_sec = time (0) + IDLE_TIMEOUT; - if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) - { - if (idle > max_idle) - { - --idle; - X_UNLOCK (reqlock); - X_LOCK (wrklock); - --started; - X_UNLOCK (wrklock); - goto quit; - } - - /* we are allowed to idle, so do so without any timeout */ - X_COND_WAIT (reqwait, reqlock); - } - - --idle; - } - - --nready; - - X_UNLOCK (reqlock); - - if (req->type < 0) - goto quit; - - if (!EIO_CANCELLED (req)) - ETP_EXECUTE (self, req); - - X_LOCK (reslock); - - ++npending; - - if (!reqq_push (&res_queue, req) && want_poll_cb) - want_poll_cb (); - - self->req = 0; - etp_worker_clear (self); - - X_UNLOCK (reslock); - } - -quit: - X_LOCK (wrklock); - etp_worker_free (self); - X_UNLOCK (wrklock); - - return 0; -} - -/*****************************************************************************/ - -int eio_init (void (*want_poll)(void), void (*done_poll)(void)) -{ - return etp_init (want_poll, done_poll); -} - -static void eio_api_destroy (eio_req *req) -{ - free (req); -} - -#define REQ(rtype) \ - eio_req *req; \ - \ - req = (eio_req *)calloc (1, sizeof *req); \ - if (!req) \ - return 0; \ - \ - req->type = rtype; \ - req->pri = pri; \ - req->finish = cb; \ - req->data = data; \ - req->destroy = eio_api_destroy; - -#define SEND eio_submit (req); return req - -#define PATH \ - req->flags |= EIO_FLAG_PTR1_FREE; \ - req->ptr1 = strdup (path); \ - if (!req->ptr1) \ - { \ - eio_api_destroy (req); \ - return 0; \ - } - -static void eio_execute (etp_worker *self, eio_req *req) -{ - switch (req->type) - { - case EIO_READ: ALLOC (req->size); - req->result = req->offs >= 0 - ? pread (req->int1, req->ptr2, req->size, req->offs) - : read (req->int1, req->ptr2, req->size); break; - case EIO_WRITE: -#if defined (__APPLE__) - pthread_mutex_lock (&apple_bug_writelock); -#endif - - req->result = req->offs >= 0 - ? pwrite (req->int1, req->ptr2, req->size, req->offs) - : write (req->int1, req->ptr2, req->size); - -#if defined (__APPLE__) - pthread_mutex_unlock (&apple_bug_writelock); -#endif - break; - - case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; - case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; - - case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); - req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; -#ifndef _WIN32 - case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); - req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; -#endif - case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); - req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; - -#ifndef _WIN32 - case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); - req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; - case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); - req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; - - case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; - case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; -#endif - case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; -#ifndef _WIN32 - case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; - case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; -#endif - case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; - - case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break; - case EIO_CLOSE: req->result = close (req->int1); break; - case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; - case EIO_UNLINK: req->result = unlink (req->ptr1); break; - case EIO_RMDIR: req->result = rmdir (req->ptr1); break; -#ifdef _WIN32 - case EIO_MKDIR: req->result = mkdir (req->ptr1); break; -#else - case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; -#endif - case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; -#ifndef _WIN32 - case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; - case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; - case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; -#endif - -#ifndef _WIN32 - case EIO_READLINK: ALLOC (PATH_MAX); - req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; -#endif - -#ifndef _WIN32 - case EIO_SYNC: req->result = 0; sync (); break; -#endif - case EIO_FSYNC: req->result = fsync (req->int1); break; - case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; - case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; - case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; - case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; - case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; - case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; - - case EIO_READDIR: eio__scandir (req, self); break; - - case EIO_BUSY: -#ifdef _WIN32 - Sleep (req->nv1 * 1e3); -#else - { - struct timeval tv; - - tv.tv_sec = req->nv1; - tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; - - req->result = select (0, 0, 0, 0, &tv); - } -#endif - break; - - case EIO_UTIME: - case EIO_FUTIME: - { - struct timeval tv[2]; - struct timeval *times; - - if (req->nv1 != -1. || req->nv2 != -1.) - { - tv[0].tv_sec = req->nv1; - tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; - tv[1].tv_sec = req->nv2; - tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; - - times = tv; - } - else - times = 0; - - req->result = req->type == EIO_FUTIME - ? futimes (req->int1, times) - : utimes (req->ptr1, times); - } - break; - - case EIO_GROUP: - abort (); /* handled in eio_request */ - - case EIO_NOP: - req->result = 0; - break; - - case EIO_CUSTOM: - ((void (*)(eio_req *))req->feed) (req); - break; - - default: - errno = ENOSYS; - req->result = -1; - break; - } - - req->errorno = errno; -} - -#ifndef EIO_NO_WRAPPERS - -eio_req *eio_nop (int pri, eio_cb cb, void *data) -{ - REQ (EIO_NOP); SEND; -} - -eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data) -{ - REQ (EIO_BUSY); req->nv1 = delay; SEND; -} - -eio_req *eio_sync (int pri, eio_cb cb, void *data) -{ - REQ (EIO_SYNC); SEND; -} - -eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FSYNC); req->int1 = fd; SEND; -} - -eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) -{ - REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; -} - -eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) -{ - REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; -} - -eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) -{ - REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; -} - -eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) -{ - REQ (EIO_MLOCKALL); req->int1 = flags; SEND; -} - -eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) -{ - REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; -} - -eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FDATASYNC); req->int1 = fd; SEND; -} - -eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) -{ - REQ (EIO_CLOSE); req->int1 = fd; SEND; -} - -eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) -{ - REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; -} - -eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) -{ - REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; -} - -eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) -{ - REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; -} - -eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FSTAT); req->int1 = fd; SEND; -} - -eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FSTATVFS); req->int1 = fd; SEND; -} - -eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; -} - -eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; -} - -eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; -} - -eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) -{ - REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; -} - -eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) -{ - REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND; -} - -eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data) -{ - REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; -} - -eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data) -{ - REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; -} - -eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data) -{ - REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; -} - -eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) -{ - REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; -} - -eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) -{ - REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; -} - -eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) -{ - REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND; -} - -eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data) -{ - REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND; -} - -static eio_req * -eio__1path (int type, const char *path, int pri, eio_cb cb, void *data) -{ - REQ (type); PATH; SEND; -} - -eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) -{ - return eio__1path (EIO_READLINK, path, pri, cb, data); -} - -eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) -{ - return eio__1path (EIO_STAT, path, pri, cb, data); -} - -eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) -{ - return eio__1path (EIO_LSTAT, path, pri, cb, data); -} - -eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) -{ - return eio__1path (EIO_STATVFS, path, pri, cb, data); -} - -eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) -{ - return eio__1path (EIO_UNLINK, path, pri, cb, data); -} - -eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) -{ - return eio__1path (EIO_RMDIR, path, pri, cb, data); -} - -eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) -{ - REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; -} - -eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) -{ - REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; -} - -static eio_req * -eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) -{ - REQ (type); PATH; - - req->flags |= EIO_FLAG_PTR2_FREE; - req->ptr2 = strdup (new_path); - if (!req->ptr2) - { - eio_api_destroy (req); - return 0; - } - - SEND; -} - -eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data) -{ - return eio__2path (EIO_LINK, path, new_path, pri, cb, data); -} - -eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data) -{ - return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data); -} - -eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) -{ - return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); -} - -eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) -{ - REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; -} - -#endif - -eio_req *eio_grp (eio_cb cb, void *data) -{ - const int pri = EIO_PRI_MAX; - - REQ (EIO_GROUP); SEND; -} - -#undef REQ -#undef PATH -#undef SEND - -/*****************************************************************************/ -/* grp functions */ - -void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) -{ - grp->int2 = limit; - grp->feed = feed; - - grp_try_feed (grp); -} - -void eio_grp_limit (eio_req *grp, int limit) -{ - grp->int2 = limit; - - grp_try_feed (grp); -} - -void eio_grp_add (eio_req *grp, eio_req *req) -{ - assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); - - grp->flags |= EIO_FLAG_GROUPADD; - - ++grp->size; - req->grp = grp; - - req->grp_prev = 0; - req->grp_next = grp->grp_first; - - if (grp->grp_first) - grp->grp_first->grp_prev = req; - - grp->grp_first = req; -} - -/*****************************************************************************/ -/* misc garbage */ - -ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) -{ - etp_worker wrk; - ssize_t ret; - - wrk.dbuf = 0; - - ret = eio__sendfile (ofd, ifd, offset, count, &wrk); - - if (wrk.dbuf) - free (wrk.dbuf); - - return ret; -} - diff --git a/deps/uv/eio/eio.h b/deps/uv/eio/eio.h deleted file mode 100644 index 1d597e1fa4..0000000000 --- a/deps/uv/eio/eio.h +++ /dev/null @@ -1,356 +0,0 @@ -/* - * libeio API header - * - * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -#ifndef EIO_H_ -#define EIO_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -#include -#include - -#ifdef __OpenBSD__ -# include -#endif - -#ifdef _WIN32 -# define uid_t int -# define gid_t int -#endif - -typedef struct eio_req eio_req; -typedef struct eio_dirent eio_dirent; - -typedef int (*eio_cb)(eio_req *req); - -#ifndef EIO_REQ_MEMBERS -# define EIO_REQ_MEMBERS -#endif - -#ifndef EIO_STRUCT_STAT -# ifdef _WIN32 -# define EIO_STRUCT_STAT struct _stati64 -# else -# define EIO_STRUCT_STAT struct stat -# endif -#endif - -#ifndef EIO_STRUCT_STATVFS -# define EIO_STRUCT_STATVFS struct statvfs -#endif - -/* for readdir */ - -/* eio_readdir flags */ -enum -{ - EIO_READDIR_DENTS = 0x01, /* ptr2 contains eio_dirents, not just the (unsorted) names */ - EIO_READDIR_DIRS_FIRST = 0x02, /* dirents gets sorted into a good stat() ing order to find directories first */ - EIO_READDIR_STAT_ORDER = 0x04, /* dirents gets sorted into a good stat() ing order to quickly stat all files */ - EIO_READDIR_FOUND_UNKNOWN = 0x80, /* set by eio_readdir when *_ARRAY was set and any TYPE=UNKNOWN's were found */ - - EIO_READDIR_CUSTOM1 = 0x100, /* for use by apps */ - EIO_READDIR_CUSTOM2 = 0x200 /* for use by apps */ -}; - -/* using "typical" values in the hope that the compiler will do something sensible */ -enum eio_dtype -{ - EIO_DT_UNKNOWN = 0, - EIO_DT_FIFO = 1, - EIO_DT_CHR = 2, - EIO_DT_MPC = 3, /* multiplexed char device (v7+coherent) */ - EIO_DT_DIR = 4, - EIO_DT_NAM = 5, /* xenix special named file */ - EIO_DT_BLK = 6, - EIO_DT_MPB = 7, /* multiplexed block device (v7+coherent) */ - EIO_DT_REG = 8, - EIO_DT_NWK = 9, /* HP-UX network special */ - EIO_DT_CMP = 9, /* VxFS compressed */ - EIO_DT_LNK = 10, - /* DT_SHAD = 11,*/ - EIO_DT_SOCK = 12, - EIO_DT_DOOR = 13, /* solaris door */ - EIO_DT_WHT = 14, - EIO_DT_MAX = 15 /* highest DT_VALUE ever, hopefully */ -}; - -struct eio_dirent -{ - int nameofs; /* offset of null-terminated name string in (char *)req->ptr2 */ - unsigned short namelen; /* size of filename without trailing 0 */ - unsigned char type; /* one of EIO_DT_* */ - signed char score; /* internal use */ - ino_t inode; /* the inode number, if available, otherwise unspecified */ -}; - -/* eio_msync flags */ -enum -{ - EIO_MS_ASYNC = 1, - EIO_MS_INVALIDATE = 2, - EIO_MS_SYNC = 4 -}; - -/* eio_mtouch flags */ - -enum -{ - EIO_MT_MODIFY = 1 -}; - -/* eio_sync_file_range flags */ - -enum -{ - EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1, - EIO_SYNC_FILE_RANGE_WRITE = 2, - EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4 -}; - -typedef double eio_tstamp; /* feel free to use double in your code directly */ - -/* the eio request structure */ - -enum -{ - EIO_CUSTOM, - EIO_OPEN, EIO_CLOSE, EIO_DUP2, - EIO_READ, EIO_WRITE, - EIO_READAHEAD, EIO_SENDFILE, - EIO_STAT, EIO_LSTAT, EIO_FSTAT, - EIO_STATVFS, EIO_FSTATVFS, - EIO_TRUNCATE, EIO_FTRUNCATE, - EIO_UTIME, EIO_FUTIME, - EIO_CHMOD, EIO_FCHMOD, - EIO_CHOWN, EIO_FCHOWN, - EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, - EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, - EIO_MLOCK, EIO_MLOCKALL, - EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, - EIO_MKNOD, EIO_READDIR, - EIO_LINK, EIO_SYMLINK, EIO_READLINK, - EIO_GROUP, EIO_NOP, - EIO_BUSY -}; - -/* mlockall constants */ -enum -{ - EIO_MCL_CURRENT = 1, - EIO_MCL_FUTURE = 2, -}; - -/* request priorities */ - -enum { - EIO_PRI_MIN = -4, - EIO_PRI_MAX = 4, - EIO_PRI_DEFAULT = 0, -}; - -/* eio request structure */ -/* this structure is mostly read-only */ -/* when initialising it, all members must be zero-initialised */ -struct eio_req -{ - eio_req volatile *next; /* private ETP */ - - ssize_t result; /* result of syscall, e.g. result = read (... */ - off_t offs; /* read, write, truncate, readahead, sync_file_range: file offset */ - size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range: length */ - void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ - void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */ - eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ - eio_tstamp nv2; /* utime, futime: mtime */ - - int type; /* EIO_xxx constant ETP */ - int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ - long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range: flags */ - long int3; /* chown, fchown: gid; mknod: dev_t */ - int errorno; /* errno value on syscall return */ - - unsigned char flags; /* private */ - signed char pri; /* the priority */ - - void *data; - eio_cb finish; - void (*destroy)(eio_req *req); /* called when requets no longer needed */ - void (*feed)(eio_req *req); /* only used for group requests */ - - EIO_REQ_MEMBERS - - eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ -}; - -/* _private_ request flags */ -enum { - EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */ - EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */ - EIO_FLAG_PTR2_FREE = 0x04, /* need to free(ptr2) */ - EIO_FLAG_GROUPADD = 0x08 /* some request was added to the group */ -}; - -/* undocumented/unsupported/private helper */ -/*void eio_page_align (void **addr, size_t *length);*/ - -/* returns < 0 on error, errno set - * need_poll, if non-zero, will be called when results are available - * and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself). - * done_poll is called when the need to poll is gone. - */ -int eio_init (void (*want_poll)(void), void (*done_poll)(void)); - -/* must be called regularly to handle pending requests */ -/* returns 0 if all requests were handled, -1 if not, or the value of EIO_FINISH if != 0 */ -int eio_poll (void); - -/* stop polling if poll took longer than duration seconds */ -void eio_set_max_poll_time (eio_tstamp nseconds); -/* do not handle more then count requests in one call to eio_poll_cb */ -void eio_set_max_poll_reqs (unsigned int nreqs); - -/* set minimum required number - * maximum wanted number - * or maximum idle number of threads */ -void eio_set_min_parallel (unsigned int nthreads); -void eio_set_max_parallel (unsigned int nthreads); -void eio_set_max_idle (unsigned int nthreads); - -unsigned int eio_nreqs (void); /* number of requests in-flight */ -unsigned int eio_nready (void); /* number of not-yet handled requests */ -unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */ -unsigned int eio_nthreads (void); /* number of worker threads in use currently */ - -/*****************************************************************************/ -/* convinience wrappers */ - -#ifndef EIO_NO_WRAPPERS -eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ -eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ -eio_req *eio_sync (int pri, eio_cb cb, void *data); -eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); -eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); -eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); -eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); -eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data); -eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data); -eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data); -eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); -eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); -eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); -eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); -eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); -eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data); -eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data); -eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); -eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data); -eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data); -eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data); -eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); -eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data); -eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); -eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data); -eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data); -eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ -eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data); -eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data); -eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ -eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); -eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); -eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); -eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); -eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data); -#endif - -/*****************************************************************************/ -/* groups */ - -eio_req *eio_grp (eio_cb cb, void *data); -void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit); -void eio_grp_limit (eio_req *grp, int limit); -void eio_grp_add (eio_req *grp, eio_req *req); -void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */ - -/*****************************************************************************/ -/* request api */ - -/* true if the request was cancelled, useful in the invoke callback */ -#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED) - -#define EIO_RESULT(req) ((req)->result) -/* returns a pointer to the result buffer allocated by eio */ -#define EIO_BUF(req) ((req)->ptr2) -#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req)) -#define EIO_STATVFS_BUF(req) ((EIO_STRUCT_STATVFS *)EIO_BUF(req)) -#define EIO_PATH(req) ((char *)(req)->ptr1) - -/* submit a request for execution */ -void eio_submit (eio_req *req); -/* cancel a request as soon fast as possible, if possible */ -void eio_cancel (eio_req *req); -/* destroy a request that has never been submitted */ -void eio_destroy (eio_req *req); - -/*****************************************************************************/ -/* convinience functions */ - -ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); - -/*****************************************************************************/ -/* export these so node_file can use these function instead of pread/write */ - -#if !HAVE_PREADWRITE -ssize_t eio__pread (int fd, void *buf, size_t count, off_t offset); -ssize_t eio__pwrite (int fd, void *buf, size_t count, off_t offset); -#endif - -#ifdef __cplusplus -} -#endif - -#endif - diff --git a/deps/uv/eio/eio.pod b/deps/uv/eio/eio.pod deleted file mode 100644 index c83768ebf1..0000000000 --- a/deps/uv/eio/eio.pod +++ /dev/null @@ -1,303 +0,0 @@ -=head1 NAME - -libeio - truly asynchronous POSIX I/O - -=head1 SYNOPSIS - - #include - -=head1 DESCRIPTION - -The newest version of this document is also available as an html-formatted -web page you might find easier to navigate when reading it for the first -time: L. - -Note that this library is a by-product of the C perl -module, and many of the subtler points regarding requets lifetime -and so on are only documented in its documentation at the -moment: L. - -=head2 FEATURES - -This library provides fully asynchronous versions of most POSIX functions -dealign with I/O. Unlike most asynchronous libraries, this not only -includes C and C, but also C, C, C and -similar functions, as well as less rarely ones such as C, C -or C. - -It also offers wrappers around C (Solaris, Linux, HP-UX and -FreeBSD, with emulation on other platforms) and C (Linux, with -emulation elsewhere>). - -The goal is to enable you to write fully non-blocking programs. For -example, in a game server, you would not want to freeze for a few seconds -just because the server is running a backup and you happen to call -C. - -=head2 TIME REPRESENTATION - -Libeio represents time as a single floating point number, representing the -(fractional) number of seconds since the (POSIX) epoch (somewhere near -the beginning of 1970, details are complicated, don't ask). This type is -called C, but it is guarenteed to be of type C (or -better), so you can freely use C yourself. - -Unlike the name component C might indicate, it is also used for -time differences throughout libeio. - -=head2 FORK SUPPORT - -Calling C is fully supported by this module. It is implemented in these steps: - - 1. wait till all requests in "execute" state have been handled - (basically requests that are already handed over to the kernel). - 2. fork - 3. in the parent, continue business as usual, done - 4. in the child, destroy all ready and pending requests and free the - memory used by the worker threads. This gives you a fully empty - libeio queue. - -=head1 INITIALISATION/INTEGRATION - -Before you can call any eio functions you first have to initialise the -library. The library integrates into any event loop, but can also be used -without one, including in polling mode. - -You have to provide the necessary glue yourself, however. - -=over 4 - -=item int eio_init (void (*want_poll)(void), void (*done_poll)(void)) - -This function initialises the library. On success it returns C<0>, on -failure it returns C<-1> and sets C appropriately. - -It accepts two function pointers specifying callbacks as argument, both of -which can be C<0>, in which case the callback isn't called. - -=item want_poll callback - -The C callback is invoked whenever libeio wants attention (i.e. -it wants to be polled by calling C). It is "edge-triggered", -that is, it will only be called once when eio wants attention, until all -pending requests have been handled. - -This callback is called while locks are being held, so I. That includes -C. What you should do is notify some other thread, or wake up -your event loop, and then call C. - -=item done_poll callback - -This callback is invoked when libeio detects that all pending requests -have been handled. It is "edge-triggered", that is, it will only be -called once after C. To put it differently, C and -C are invoked in pairs: after C you have to call -C until either C indicates that everything has been -handled or C has been called, which signals the same. - -Note that C might return after C and C -have been called again, so watch out for races in your code. - -As with C, this callback is called while lcoks are being held, -so you I. - -=item int eio_poll () - -This function has to be called whenever there are pending requests that -need finishing. You usually call this after C has indicated -that you should do so, but you can also call this function regularly to -poll for new results. - -If any request invocation returns a non-zero value, then C -immediately returns with that value as return value. - -Otherwise, if all requests could be handled, it returns C<0>. If for some -reason not all requests have been handled, i.e. some are still pending, it -returns C<-1>. - -=back - -For libev, you would typically use an C watcher: the -C callback would invoke C to wake up the event -loop. Inside the callback set for the watcher, one would call C (followed by C again if C indicates that not -all requests have been handled yet). The race is taken care of because -libev resets/rearms the async watcher before calling your callback, -and therefore, before calling C. This might result in (some) -spurious wake-ups, but is generally harmless. - -For most other event loops, you would typically use a pipe - the event -loop should be told to wait for read readyness on the read end. In -C you would write a single byte, in C you would try -to read that byte, and in the callback for the read end, you would call -C. The race is avoided here because the event loop should invoke -your callback again and again until the byte has been read (as the pipe -read callback does not read it, only C). - -=head2 CONFIGURATION - -The functions in this section can sometimes be useful, but the default -configuration will do in most case, so you should skip this section on -first reading. - -=over 4 - -=item eio_set_max_poll_time (eio_tstamp nseconds) - -This causes C to return after it has detected that it was -running for C seconds or longer (this number can be fractional). - -This can be used to limit the amount of time spent handling eio requests, -for example, in interactive programs, you might want to limit this time to -C<0.01> seconds or so. - -Note that: - -a) libeio doesn't know how long your request callbacks take, so the time -spent in C is up to one callback invocation longer then this -interval. - -b) this is implemented by calling C after each request, -which can be costly. - -c) at least one request will be handled. - -=item eio_set_max_poll_reqs (unsigned int nreqs) - -When C is non-zero, then C will not handle more than -C requests per invocation. This is a less costly way to limit the -amount of work done by C then setting a time limit. - -If you know your callbacks are generally fast, you could use this to -encourage interactiveness in your programs by setting it to C<10>, C<100> -or even C<1000>. - -=item eio_set_min_parallel (unsigned int nthreads) - -Make sure libeio can handle at least this many requests in parallel. It -might be able handle more. - -=item eio_set_max_parallel (unsigned int nthreads) - -Set the maximum number of threads that libeio will spawn. - -=item eio_set_max_idle (unsigned int nthreads) - -Libeio uses threads internally to handle most requests, and will start and stop threads on demand. - -This call can be used to limit the number of idle threads (threads without -work to do): libeio will keep some threads idle in preperation for more -requests, but never longer than C threads. - -In addition to this, libeio will also stop threads when they are idle for -a few seconds, regardless of this setting. - -=item unsigned int eio_nthreads () - -Return the number of worker threads currently running. - -=item unsigned int eio_nreqs () - -Return the number of requests currently handled by libeio. This is the -total number of requests that have been submitted to libeio, but not yet -destroyed. - -=item unsigned int eio_nready () - -Returns the number of ready requests, i.e. requests that have been -submitted but have not yet entered the execution phase. - -=item unsigned int eio_npending () - -Returns the number of pending requests, i.e. requests that have been -executed and have results, but have not been finished yet by a call to -C). - -=back - - -=head1 ANATOMY OF AN EIO REQUEST - -#TODO - - -=head1 HIGH LEVEL REQUEST API - -#TODO - -=back - - -=head1 LOW LEVEL REQUEST API - -#TODO - -=head1 EMBEDDING - -Libeio can be embedded directly into programs. This functionality is not -documented and not (yet) officially supported. - -Note that, when including C, you are responsible for defining -the compilation environment (C<_LARGEFILE_SOURCE>, C<_GNU_SOURCE> etc.). - -If you need to know how, check the C perl module, which does -exactly that. - - -=head1 COMPILETIME CONFIGURATION - -These symbols, if used, must be defined when compiling F. - -=over 4 - -=item EIO_STACKSIZE - -This symbol governs the stack size for each eio thread. Libeio itself -was written to use very little stackspace, but when using C -requests, you might want to increase this. - -If this symbol is undefined (the default) then libeio will use its default -stack size (C currently). If it is defined, but -C<0>, then the default operating system stack size will be used. In all -other cases, the value must be an expression that evaluates to the desired -stack size. - -=back - - -=head1 PORTABILITY REQUIREMENTS - -In addition to a working ISO-C implementation, libeio relies on a few -additional extensions: - -=over 4 - -=item POSIX threads - -To be portable, this module uses threads, specifically, the POSIX threads -library must be available (and working, which partially excludes many xBSD -systems, where C is buggy). - -=item POSIX-compatible filesystem API - -This is actually a harder portability requirement: The libeio API is quite -demanding regarding POSIX API calls (symlinks, user/group management -etc.). - -=item C must hold a time value in seconds with enough accuracy - -The type C is used to represent timestamps. It is required to -have at least 51 bits of mantissa (and 9 bits of exponent), which is good -enough for at least into the year 4000. This requirement is fulfilled by -implementations implementing IEEE 754 (basically all existing ones). - -=back - -If you know of other additional requirements drop me a note. - - -=head1 AUTHOR - -Marc Lehmann . - diff --git a/deps/uv/eio/libeio.m4 b/deps/uv/eio/libeio.m4 deleted file mode 100644 index 5302cfcc91..0000000000 --- a/deps/uv/eio/libeio.m4 +++ /dev/null @@ -1,156 +0,0 @@ -AC_SEARCH_LIBS( - pthread_create, - [pthread pthreads pthreadVC2], - , - [AC_MSG_ERROR(pthread functions not found)] -) - -AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([[ -#include -#include -#include -struct timeval tv[2]; -int res; -int main (void) -{ - res = utimes ("/", tv); - return 0; -} -]],ac_cv_utimes=yes,ac_cv_utimes=no)]) -test $ac_cv_utimes = yes && AC_DEFINE(HAVE_UTIMES, 1, utimes(2) is available) - -AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([[ -#include -#include -#include -struct timeval tv[2]; -int res; -int fd; -int main (void) -{ - res = futimes (fd, tv); - return 0; -} -]],ac_cv_futimes=yes,ac_cv_futimes=no)]) -test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available) - -AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([ -#include -int main (void) -{ - int fd = 0; - size_t count = 2; - ssize_t res; - res = readahead (fd, 0, count); - return 0; -} -],ac_cv_readahead=yes,ac_cv_readahead=no)]) -test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux)) - -AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([ -#include -int main (void) -{ - int fd = 0; - fdatasync (fd); - return 0; -} -],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)]) -test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available) - -AC_CACHE_CHECK(for pread and pwrite, ac_cv_preadwrite, [AC_LINK_IFELSE([ -#include -int main (void) -{ - int fd = 0; - size_t count = 1; - char buf; - off_t offset = 1; - ssize_t res; - res = pread (fd, &buf, count, offset); - res = pwrite (fd, &buf, count, offset); - return 0; -} -],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)]) -test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available) - -AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([ -# include -#if __linux -# include -#elif __FreeBSD__ || defined __APPLE__ -# include -# include -#elif __hpux -# include -#else -# error unsupported architecture -#endif -int main (void) -{ - int fd = 0; - off_t offset = 1; - size_t count = 2; - ssize_t res; -#if __linux - res = sendfile (fd, fd, offset, count); -#elif __FreeBSD__ - res = sendfile (fd, fd, offset, count, 0, &offset, 0); -#elif __hpux - res = sendfile (fd, fd, offset, count, 0, 0); -#endif - return 0; -} -],ac_cv_sendfile=yes,ac_cv_sendfile=no)]) -test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported) - -AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([ -#include -int main (void) -{ - int fd = 0; - off64_t offset = 1; - off64_t nbytes = 1; - unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER; - ssize_t res; - res = sync_file_range (fd, offset, nbytes, flags); - return 0; -} -],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)]) -test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available) - -dnl ############################################################################# -dnl # these checks exist for the benefit of IO::AIO - -dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required -dnl functionality actually being present. ugh. -AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([ -#include -int main (void) -{ - int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL); - int a = POSIX_MADV_SEQUENTIAL; - int b = POSIX_MADV_RANDOM; - int c = POSIX_MADV_WILLNEED; - int d = POSIX_MADV_DONTNEED; - return 0; -} -],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)]) -test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available) - -AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([ -#define _XOPEN_SOURCE 600 -#include -int main (void) -{ - int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL); - int a = POSIX_FADV_SEQUENTIAL; - int b = POSIX_FADV_NOREUSE; - int c = POSIX_FADV_RANDOM; - int d = POSIX_FADV_WILLNEED; - int e = POSIX_FADV_DONTNEED; - return 0; -} -],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)]) -test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available) - diff --git a/deps/uv/eio/xthread.h b/deps/uv/eio/xthread.h deleted file mode 100644 index 01e2933507..0000000000 --- a/deps/uv/eio/xthread.h +++ /dev/null @@ -1,161 +0,0 @@ -#ifndef XTHREAD_H_ -#define XTHREAD_H_ - -/* whether word reads are potentially non-atomic. - * this is conservatice, likely most arches this runs - * on have atomic word read/writes. - */ -#ifndef WORDACCESS_UNSAFE -# if __i386 || __x86_64 -# define WORDACCESS_UNSAFE 0 -# else -# define WORDACCESS_UNSAFE 1 -# endif -#endif - -///////////////////////////////////////////////////////////////////////////// - -#ifdef _WIN32 - -#ifndef __MINGW32__ -typedef int ssize_t -#endif - -#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls -#ifndef _WIN32_WINNT -#define _WIN32_WINNT 0x400 -#endif -#include //D -#include -#include -#include -#include -#include -#include -#include -#define sigset_t int -#define pthread_sigmask(a,b,c) -#define sigaddset(a,b) -#define sigemptyset(s) -#define sigfillset(s) - -typedef pthread_mutex_t xmutex_t; -#define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER -#define X_LOCK(mutex) pthread_mutex_lock (&(mutex)) -#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) - -typedef pthread_cond_t xcond_t; -#define X_COND_INIT PTHREAD_COND_INITIALIZER -#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond)) -#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex)) -#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to)) - -typedef pthread_t xthread_t; -#define X_THREAD_PROC(name) void *name (void *thr_arg) -#define X_THREAD_ATFORK(a,b,c) - -static int -thread_create (xthread_t *tid, void *(*proc)(void *), void *arg) -{ - int retval; - pthread_attr_t attr; - - pthread_attr_init (&attr); - pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); - - retval = pthread_create (tid, &attr, proc, arg) == 0; - - pthread_attr_destroy (&attr); - - return retval; -} - -#define respipe_read(a,b,c) PerlSock_recv ((a), (b), (c), 0) -#define respipe_write(a,b,c) send ((a), (b), (c), 0) -#define respipe_close(a) PerlSock_closesocket ((a)) - -#else -///////////////////////////////////////////////////////////////////////////// - -#if __linux && !defined(_GNU_SOURCE) -# define _GNU_SOURCE -#endif - -/* just in case */ -#define _REENTRANT 1 - -#if __solaris -# define _POSIX_PTHREAD_SEMANTICS 1 -/* try to bribe solaris headers into providing a current pthread API - * despite environment being configured for an older version. - */ -# define __EXTENSIONS__ 1 -#endif - -#include -#include -#include -#include -#include - -typedef pthread_mutex_t xmutex_t; -#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) -# define X_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP -#else -# define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER -#endif -#define X_LOCK(mutex) pthread_mutex_lock (&(mutex)) -#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) - -typedef pthread_cond_t xcond_t; -#define X_COND_INIT PTHREAD_COND_INITIALIZER -#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond)) -#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex)) -#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to)) - -typedef pthread_t xthread_t; -#define X_THREAD_PROC(name) static void *name (void *thr_arg) -#define X_THREAD_ATFORK(prepare,parent,child) pthread_atfork (prepare, parent, child) - -// the broken bsd's once more -#ifndef PTHREAD_STACK_MIN -# define PTHREAD_STACK_MIN 0 -#endif - -#ifndef X_STACKSIZE -# define X_STACKSIZE sizeof (long) * 4096 -#endif - -static int -thread_create (xthread_t *tid, void *(*proc)(void *), void *arg) -{ - int retval; - sigset_t fullsigset, oldsigset; - pthread_attr_t attr; - - pthread_attr_init (&attr); - pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); - pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < X_STACKSIZE ? X_STACKSIZE : PTHREAD_STACK_MIN); -#ifdef PTHREAD_SCOPE_PROCESS - pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); -#endif - - sigfillset (&fullsigset); - - pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset); - retval = pthread_create (tid, &attr, proc, arg) == 0; - pthread_sigmask (SIG_SETMASK, &oldsigset, 0); - - pthread_attr_destroy (&attr); - - return retval; -} - -#define respipe_read(a,b,c) read ((a), (b), (c)) -#define respipe_write(a,b,c) write ((a), (b), (c)) -#define respipe_close(a) close ((a)) - -#endif - -#endif - diff --git a/deps/uv/ev/Changes b/deps/uv/ev/Changes deleted file mode 100644 index d6fca2f67c..0000000000 --- a/deps/uv/ev/Changes +++ /dev/null @@ -1,388 +0,0 @@ -Revision history for libev, a high-performance and full-featured event loop. - -4.04 Wed Feb 16 09:01:51 CET 2011 - - fix two problems in the native win32 backend, where reuse of fd's - with different underlying handles caused handles not to be removed - or added to the select set (analyzed and tested by Bert Belder). - - do no rely on ceil() in ev_e?poll.c. - - backport libev to HP-UX versions before 11 v3. - - configure did not detect nanosleep and clock_gettime properly when - they are available in the libc (as opposed to -lrt). - -4.03 Tue Jan 11 14:37:25 CET 2011 - - officially support polling files with all backends. - - support files, /dev/zero etc. the same way as select in the epoll - backend, by generating events on our own. - - ports backend: work around solaris bug 6874410 and many related ones - (EINTR, maybe more), with no performance loss (note that the solaris - bug report is actually wrong, reality is far more bizarre and broken - than that). - - define EV_READ/EV_WRITE as macros in event.h, as some programs use - #ifdef to test for them. - - new (experimental) function: ev_feed_signal. - - new (to become default) EVFLAG_NOSIGMASK flag. - - new EVBACKEND_MASK symbol. - - updated COMMON IDIOMS SECTION. - -4.01 Fri Nov 5 21:51:29 CET 2010 - - automake fucked it up, apparently, --add-missing -f is not quite enough - to make it update its files, so 4.00 didn't install ev++.h and - event.h on make install. grrr. - - ev_loop(count|depth) didn't return anything (Robin Haberkorn). - - change EV_UNDEF to 0xffffffff to silence some overzealous compilers. - - use "(libev) " prefix for all libev error messages now. - -4.00 Mon Oct 25 12:32:12 CEST 2010 - - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading. - - ev_embed_stop did not correctly stop the watcher (very good - testcase by Vladimir Timofeev). - - ev_run will now always update the current loop time - it erroneously - didn't when idle watchers were active, causing timers not to fire. - - fix a bug where a timeout of zero caused the timer not to fire - in the libevent emulation (testcase by Péter Szabó). - - applied win32 fixes by Michael Lenaghan (also James Mansion). - - replace EV_MINIMAL by EV_FEATURES. - - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it - seems the former is *much* faster than the latter. - - linux kernel version detection (for inotify bug workarounds) - did not work properly. - - reduce the number of spurious wake-ups with the ports backend. - - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu). - - do async init within ev_async_start, not ev_async_set, which avoids - an API quirk where the set function must be called in the C++ API - even when there is nothing to set. - - add (undocumented) EV_ENABLE when adding events with kqueue, - this might help with OS X, which seems to need it despite documenting - not to need it (helpfully pointed out by Tilghman Lesher). - - do not use poll by default on freebsd, it's broken (what isn't - on freebsd...). - - allow to embed epoll on kernels >= 2.6.32. - - configure now prepends -O3, not appends it, so one can still - override it. - - ev.pod: greatly expanded the portability section, added a porting - section, a description of watcher states and made lots of minor fixes. - - disable poll backend on AIX, the poll header spams the namespace - and it's not worth working around dead platforms (reported - and analyzed by Aivars Kalvans). - - improve header file compatibility of the standalone eventfd code - in an obscure case. - - implement EV_AVOID_STDIO option. - - do not use sscanf to parse linux version number (smaller, faster, - no sscanf dependency). - - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings. - - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs. - - add section on accept() problems to the manpage. - - rename EV_TIMEOUT to EV_TIMER. - - rename ev_loop_count/depth/verify/loop/unloop. - - remove ev_default_destroy and ev_default_fork. - - switch to two-digit minor version. - - work around an apparent gentoo compiler bug. - - define _DARWIN_UNLIMITED_SELECT. just so. - - use enum instead of #define for most constants. - - improve compatibility to older C++ compilers. - - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now - default arguments when compiled as C++. - - enable automake dependency tracking. - - ev_loop_new no longer leaks memory when loop creation failed. - - new ev_cleanup watcher type. - -3.9 Thu Dec 31 07:59:59 CET 2009 - - signalfd is no longer used by default and has to be requested - explicitly - this means that easy to catch bugs become hard to - catch race conditions, but the users have spoken. - - point out the unspecified signal mask in the documentation, and - that this is a race condition regardless of EV_SIGNALFD. - - backport inotify code to C89. - - inotify file descriptors could leak into child processes. - - ev_stat watchers could keep an errornous extra ref on the loop, - preventing exit when unregistering all watchers (testcases - provided by ry@tinyclouds.org). - - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration - symbols to make it easier for apps to do their own fd management. - - support EV_IDLE_ENABLE being disabled in ev++.h - (patch by Didier Spezia). - - take advantage of inotify_init1, if available, to set cloexec/nonblock - on fd creation, to avoid races. - - the signal handling pipe wasn't always initialised under windows - (analysed by lekma). - - changed minimum glibc requirement from glibc 2.9 to 2.7, for - signalfd. - - add missing string.h include (Denis F. Latypoff). - - only replace ev_stat.prev when we detect an actual difference, - so prev is (almost) always different to attr. this might - have caused the problems with 04_stat.t. - - add ev::timer->remaining () method to C++ API. - -3.8 Sun Aug 9 14:30:45 CEST 2009 - - incompatible change: do not necessarily reset signal handler - to SIG_DFL when a sighandler is stopped. - - ev_default_destroy did not properly free or zero some members, - potentially causing crashes and memory corruption on repeated - ev_default_destroy/ev_default_loop calls. - - take advantage of signalfd on GNU/Linux systems. - - document that the signal mask might be in an unspecified - state when using libev's signal handling. - - take advantage of some GNU/Linux calls to set cloexec/nonblock - on fd creation, to avoid race conditions. - -3.7 Fri Jul 17 16:36:32 CEST 2009 - - ev_unloop and ev_loop wrongly used a global variable to exit loops, - instead of using a per-loop variable (bug caught by accident...). - - the ev_set_io_collect_interval interpretation has changed. - - add new functionality: ev_set_userdata, ev_userdata, - ev_set_invoke_pending_cb, ev_set_loop_release_cb, - ev_invoke_pending, ev_pending_count, together with a long example - about thread locking. - - add ev_timer_remaining (as requested by Denis F. Latypoff). - - add ev_loop_depth. - - calling ev_unloop in fork/prepare watchers will no longer poll - for new events. - - Denis F. Latypoff corrected many typos in example code snippets. - - honor autoconf detection of EV_USE_CLOCK_SYSCALL, also double- - check that the syscall number is available before trying to - use it (reported by ry@tinyclouds). - - use GetSystemTimeAsFileTime instead of _timeb on windows, for - slightly higher accuracy. - - properly declare ev_loop_verify and ev_now_update even when - !EV_MULTIPLICITY. - - do not compile in any priority code when EV_MAXPRI == EV_MINPRI. - - support EV_MINIMAL==2 for a reduced API. - - actually 0-initialise struct sigaction when installing signals. - - add section on hibernate and stopped processes to ev_timer docs. - -3.6 Tue Apr 28 02:49:30 CEST 2009 - - multiple timers becoming ready within an event loop iteration - will be invoked in the "correct" order now. - - do not leave the event loop early just because we have no active - watchers, fixing a problem when embedding a kqueue loop - that has active kernel events but no registered watchers - (reported by blacksand blacksand). - - correctly zero the idx values for arrays, so destroying and - reinitialising the default loop actually works (patch by - Malek Hadj-Ali). - - implement ev_suspend and ev_resume. - - new EV_CUSTOM revents flag for use by applications. - - add documentation section about priorites. - - add a glossary to the dcoumentation. - - extend the ev_fork description slightly. - - optimize a jump out of call_pending. - -3.53 Sun Feb 15 02:38:20 CET 2009 - - fix a bug in event pipe creation on win32 that would cause a - failed assertion on event loop creation (patch by Malek Hadj-Ali). - - probe for CLOCK_REALTIME support at runtime as well and fall - back to gettimeofday if there is an error, to support older - operating systems with newer header files/libraries. - - prefer gettimeofday over clock_gettime with USE_CLOCK_SYSCALL - (default most everywhere), otherwise not. - -3.52 Wed Jan 7 21:43:02 CET 2009 - - fix compilation of select backend in fd_set mode when NFDBITS is - missing (to get it to compile on QNX, reported by Rodrigo Campos). - - better select-nfds handling when select backend is in fd_set mode. - - diagnose fd_set overruns when select backend is in fd_set mode. - - due to a thinko, instead of disabling everything but - select on the borked OS X platform, everything but select was - allowed (reported by Emanuele Giaquinta). - - actually verify that local and remote port are matching in - libev's socketpair emulation, which makes denial-of-service - attacks harder (but not impossible - it's windows). Make sure - it even works under vista, which thinks that getpeer/sockname - should return fantasy port numbers. - - include "libev" in all assertion messages for potentially - clearer diagnostics. - - event_get_version (libevent compatibility) returned - a useless string instead of the expected version string - (patch by W.C.A. Wijngaards). - -3.51 Wed Dec 24 23:00:11 CET 2008 - - fix a bug where an inotify watcher was added twice, causing - freezes on hash collisions (reported and analysed by Graham Leggett). - - new config symbol, EV_USE_CLOCK_SYSCALL, to make libev use - a direct syscall - slower, but no dependency on librt et al. - - assume negative return values != -1 signals success of port_getn - (http://cvs.epicsol.org/cgi/viewcvs.cgi/epic5/source/newio.c?rev=1.52) - (no known failure reports, but it doesn't hurt). - - fork detection in ev_embed now stops and restarts the watcher - automatically. - - EXPERIMENTAL: default the method to operator () in ev++.h, - to make it nicer to use functors (requested by Benedek László). - - fixed const object callbacks in ev++.h. - - replaced loop_ref argument of watcher.set (loop) by a direct - ev_loop * in ev++.h, to avoid clashes with functor patch. - - do not try to watch the empty string via inotify. - - inotify watchers could be leaked under certain circumstances. - - OS X 10.5 is actually even more broken than earlier versions, - so fall back to select on that piece of garbage. - - fixed some weirdness in the ev_embed documentation. - -3.49 Wed Nov 19 11:26:53 CET 2008 - - ev_stat watchers will now use inotify as a mere hint on - kernels <2.6.25, or if the filesystem is not in the - "known to be good" list. - - better mingw32 compatibility (it's not as borked as native win32) - (analysed by Roger Pack). - - include stdio.h in the example program, as too many people are - confused by the weird C language otherwise. I guess the next thing - I get told is that the "..." ellipses in the examples don't compile - with their C compiler. - -3.48 Thu Oct 30 09:02:37 CET 2008 - - further optimise away the EPOLL_CTL_ADD/MOD combo in the epoll - backend by assuming the kernel event mask hasn't changed if - ADD fails with EEXIST. - - work around spurious event notification bugs in epoll by using - a 32-bit generation counter. recreate kernel state if we receive - spurious notifications or unwanted events. this is very costly, - but I didn't come up with this horrible design. - - use memset to initialise most arrays now and do away with the - init functions. - - expand time-out strategies into a "Be smart about timeouts" section. - - drop the "struct" from all ev_watcher declarations in the - documentation and did other clarifications (yeah, it was a mistake - to have a struct AND a function called ev_loop). - - fix a bug where ev_default would not initialise the default - loop again after it was destroyed with ev_default_destroy. - - rename syserr to ev_syserr to avoid name clashes when embedding, - do similar changes for event.c. - -3.45 Tue Oct 21 21:59:26 CEST 2008 - - disable inotify usage on linux <2.6.25, as it is broken - (reported by Yoann Vandoorselaere). - - ev_stat erroneously would try to add inotify watchers - even when inotify wasn't available (this should only - have a performance impact). - - ev_once now passes both timeout and io to the callback if both - occur concurrently, instead of giving timeouts precedence. - - disable EV_USE_INOTIFY when sys/inotify.h is too old. - -3.44 Mon Sep 29 05:18:39 CEST 2008 - - embed watchers now automatically invoke ev_loop_fork on the - embedded loop when the parent loop forks. - - new function: ev_now_update (loop). - - verify_watcher was not marked static. - - improve the "associating..." manpage section. - - documentation tweaks here and there. - -3.43 Sun Jul 6 05:34:41 CEST 2008 - - include more include files on windows to get struct _stati64 - (reported by Chris Hulbert, but doesn't quite fix his issue). - - add missing #include in ev.c on windows (reported by - Matt Tolton). - -3.42 Tue Jun 17 12:12:07 CEST 2008 - - work around yet another windows bug: FD_SET actually adds fd's - multiple times to the fd_*SET*, despite official MSN docs claiming - otherwise. Reported and well-analysed by Matt Tolton. - - define NFDBITS to 0 when EV_SELECT_IS_WINSOCKET to make it compile - (reported any analysed by Chris Hulbert). - - fix a bug in ev_ebadf (this function is only used to catch - programming errors in the libev user). reported by Matt Tolton. - - fix a bug in fd_intern on win32 (could lead to compile errors - under some circumstances, but would work correctly if it compiles). - reported by Matt Tolton. - - (try to) work around missing lstat on windows. - - pass in the write fd set as except fd set under windows. windows - is so uncontrollably lame that it requires this. this means that - switching off oobinline is not supported (but tcp/ip doesn't - have oob, so that would be stupid anyways. - - use posix module symbol to auto-detect monotonic clock presence - and some other default values. - -3.41 Fri May 23 18:42:54 CEST 2008 - - work around an obscure bug in winsocket select: if you - provide only empty fd sets then select returns WSAEINVAL. how sucky. - - improve timer scheduling stability and reduce use of time_epsilon. - - use 1-based 2-heap for EV_MINIMAL, simplifies code, reduces - codesize and makes for better cache-efficiency. - - use 3-based 4-heap for !EV_MINIMAL. this makes better use - of cpu cache lines and gives better growth behaviour than - 2-based heaps. - - cache timestamp within heap for !EV_MINIMAL, to avoid random - memory accesses. - - document/add EV_USE_4HEAP and EV_HEAP_CACHE_AT. - - fix a potential aliasing issue in ev_timer_again. - - add/document ev_periodic_at, retract direct access to ->at. - - improve ev_stat docs. - - add portability requirements section. - - fix manpage headers etc. - - normalise WSA error codes to lower range on windows. - - add consistency check code that can be called automatically - or on demand to check for internal structures (ev_loop_verify). - -3.31 Wed Apr 16 20:45:04 CEST 2008 - - added last minute fix for ev_poll.c by Brandon Black. - -3.3 Wed Apr 16 19:04:10 CEST 2008 - - event_base_loopexit should return 0 on success - (W.C.A. Wijngaards). - - added linux eventfd support. - - try to autodetect epoll and inotify support - by libc header version if not using autoconf. - - new symbols: EV_DEFAULT_UC and EV_DEFAULT_UC_. - - declare functions defined in ev.h as inline if - C99 or gcc are available. - - enable inlining with gcc versions 2 and 3. - - work around broken poll implementations potentially - not clearing revents field in ev_poll (Brandon Black) - (no such systems are known at this time). - - work around a bug in realloc on openbsd and darwin, - also makes the erroneous valgrind complaints - go away (noted by various people). - - fix ev_async_pending, add c++ wrapper for ev_async - (based on patch sent by Johannes Deisenhofer). - - add sensible set method to ev::embed. - - made integer constants type int in ev.h. - -3.2 Wed Apr 2 17:11:19 CEST 2008 - - fix a 64 bit overflow issue in the select backend, - by using fd_mask instead of int for the mask. - - rename internal sighandler to avoid clash with very old perls. - - entering ev_loop will not clear the ONESHOT or NONBLOCKING - flags of any outer loops anymore. - - add ev_async_pending. - -3.1 Thu Mar 13 13:45:22 CET 2008 - - implement ev_async watchers. - - only initialise signal pipe on demand. - - make use of sig_atomic_t configurable. - - improved documentation. - -3.0 Mon Jan 28 13:14:47 CET 2008 - - API/ABI bump to version 3.0. - - ev++.h includes "ev.h" by default now, not . - - slightly improved documentation. - - speed up signal detection after a fork. - - only optionally return trace status changed in ev_child - watchers. - - experimental (and undocumented) loop wrappers for ev++.h. - -2.01 Tue Dec 25 08:04:41 CET 2007 - - separate Changes file. - - fix ev_path_set => ev_stat_set typo. - - remove event_compat.h from the libev tarball. - - change how include files are found. - - doc updates. - - update licenses, explicitly allow for GPL relicensing. - -2.0 Sat Dec 22 17:47:03 CET 2007 - - new ev_sleep, ev_set_(io|timeout)_collect_interval. - - removed epoll from embeddable fd set. - - fix embed watchers. - - renamed ev_embed.loop to other. - - added exported Symbol tables. - - undefine member wrapper macros at the end of ev.c. - - respect EV_H in ev++.h. - -1.86 Tue Dec 18 02:36:57 CET 2007 - - fix memleak on loop destroy (not relevant for perl). - -1.85 Fri Dec 14 20:32:40 CET 2007 - - fix some aliasing issues w.r.t. timers and periodics - (not relevant for perl). - -(for historic versions refer to EV/Changes, found in the Perl interface) - -0.1 Wed Oct 31 21:31:48 CET 2007 - - original version; hacked together in <24h. - diff --git a/deps/uv/ev/LICENSE b/deps/uv/ev/LICENSE deleted file mode 100644 index 7fa0e9f844..0000000000 --- a/deps/uv/ev/LICENSE +++ /dev/null @@ -1,36 +0,0 @@ -All files in libev are Copyright (C)2007,2008,2009 Marc Alexander Lehmann. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - * Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following - disclaimer in the documentation and/or other materials provided - with the distribution. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -Alternatively, the contents of this package may be used under the terms -of the GNU General Public License ("GPL") version 2 or any later version, -in which case the provisions of the GPL are applicable instead of the -above. If you wish to allow the use of your version of this package only -under the terms of the GPL and not to allow others to use your version of -this file under the BSD license, indicate your decision by deleting the -provisions above and replace them with the notice and other provisions -required by the GPL in this and the other files of this package. If you do -not delete the provisions above, a recipient may use your version of this -file under either the BSD or the GPL. diff --git a/deps/uv/ev/Makefile.am b/deps/uv/ev/Makefile.am deleted file mode 100644 index 058c2cb0c1..0000000000 --- a/deps/uv/ev/Makefile.am +++ /dev/null @@ -1,18 +0,0 @@ -AUTOMAKE_OPTIONS = foreign - -VERSION_INFO = 4:0:0 - -EXTRA_DIST = LICENSE Changes libev.m4 autogen.sh \ - ev_vars.h ev_wrap.h \ - ev_epoll.c ev_select.c ev_poll.c ev_kqueue.c ev_port.c ev_win32.c \ - ev.3 ev.pod - -man_MANS = ev.3 - -include_HEADERS = ev.h ev++.h event.h - -lib_LTLIBRARIES = libev.la - -libev_la_SOURCES = ev.c event.c -libev_la_LDFLAGS = -version-info $(VERSION_INFO) - diff --git a/deps/uv/ev/Makefile.in b/deps/uv/ev/Makefile.in deleted file mode 100644 index 9817a7ebd7..0000000000 --- a/deps/uv/ev/Makefile.in +++ /dev/null @@ -1,771 +0,0 @@ -# Makefile.in generated by automake 1.11.1 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, -# Inc. -# This Makefile.in is free software; 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And also smaller. Yay. - - Some of the specialties of libev not commonly found elsewhere are: - - - extensive and detailed, readable documentation (not doxygen garbage). - - fully supports fork, can detect fork in various ways and automatically - re-arms kernel mechanisms that do not support fork. - - highly optimised select, poll, epoll, kqueue and event ports backends. - - filesystem object (path) watching (with optional linux inotify support). - - wallclock-based times (using absolute time, cron-like). - - relative timers/timeouts (handle time jumps). - - fast intra-thread communication between multiple - event loops (with optional fast linux eventfd backend). - - extremely easy to embed. - - very small codebase, no bloated library. - - fully extensible by being able to plug into the event loop, - integrate other event loops, integrate other event loop users. - - very little memory use (small watchers, small event loop data). - - optional C++ interface allowing method and function callbacks - at no extra memory or runtime overhead. - - optional Perl interface with similar characteristics (capable - of running Glib/Gtk2 on libev, interfaces with Net::SNMP and - libadns). - - support for other languages (multiple C++ interfaces, D, Ruby, - Python) available from third-parties. - - Examples of programs that embed libev: the EV perl module, - rxvt-unicode, gvpe (GNU Virtual Private Ethernet), the Deliantra MMORPG - server (http://www.deliantra.net/), Rubinius (a next-generation Ruby - VM), the Ebb web server, the Rev event toolkit. - - -CONTRIBUTORS - - libev was written and designed by Marc Lehmann and Emanuele Giaquinta. - - The following people sent in patches or made other noteworthy - contributions to the design (for minor patches, see the Changes - file. If I forgot to include you, please shout at me, it was an - accident): - - W.C.A. 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then - lt_cv_nm_interface="MS dumpbin" - fi - rm -f conftest*]) -])# LT_PATH_NM - -# Old names: -AU_ALIAS([AM_PROG_NM], [LT_PATH_NM]) -AU_ALIAS([AC_PROG_NM], [LT_PATH_NM]) -dnl aclocal-1.4 backwards compatibility: -dnl AC_DEFUN([AM_PROG_NM], []) -dnl AC_DEFUN([AC_PROG_NM], []) - - -# LT_LIB_M -# -------- -# check for math library -AC_DEFUN([LT_LIB_M], -[AC_REQUIRE([AC_CANONICAL_HOST])dnl -LIBM= -case $host in -*-*-beos* | *-*-cygwin* | *-*-pw32* | *-*-darwin*) - # These system don't have libm, or don't need it - ;; -*-ncr-sysv4.3*) - AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw") - AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm") - ;; -*) - AC_CHECK_LIB(m, cos, LIBM="-lm") - ;; -esac -AC_SUBST([LIBM]) -])# LT_LIB_M - -# Old name: -AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M]) -dnl aclocal-1.4 backwards compatibility: -dnl AC_DEFUN([AC_CHECK_LIBM], []) - - -# _LT_COMPILER_NO_RTTI([TAGNAME]) -# ------------------------------- -m4_defun([_LT_COMPILER_NO_RTTI], -[m4_require([_LT_TAG_COMPILER])dnl - -_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)= - -if test "$GCC" = yes; 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- Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) - echo m68k-tektronix-bsd - exit ;; - *:IRIX*:*:*) - echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` - exit ;; - ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. - echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id - exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' - i*86:AIX:*:*) - echo i386-ibm-aix - exit ;; - ia64:AIX:*:*) - if [ -x /usr/bin/oslevel ] ; then - IBM_REV=`/usr/bin/oslevel` - else - IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} - fi - echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} - exit ;; - *:AIX:2:3) - if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #include - - main() - { - if (!__power_pc()) - exit(1); - puts("powerpc-ibm-aix3.2.5"); - exit(0); - } -EOF - if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` - then - echo "$SYSTEM_NAME" - else - echo rs6000-ibm-aix3.2.5 - fi - elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then - echo rs6000-ibm-aix3.2.4 - else - echo rs6000-ibm-aix3.2 - fi - exit ;; - *:AIX:*:[456]) - IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` - if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then - IBM_ARCH=rs6000 - else - IBM_ARCH=powerpc - fi - if [ -x /usr/bin/oslevel ] ; then - IBM_REV=`/usr/bin/oslevel` - else - IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} - fi - echo ${IBM_ARCH}-ibm-aix${IBM_REV} - exit ;; - *:AIX:*:*) - echo rs6000-ibm-aix - exit ;; - ibmrt:4.4BSD:*|romp-ibm:BSD:*) - echo romp-ibm-bsd4.4 - exit ;; - ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and - echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to - exit ;; # report: romp-ibm BSD 4.3 - *:BOSX:*:*) - echo rs6000-bull-bosx - exit ;; - DPX/2?00:B.O.S.:*:*) - echo m68k-bull-sysv3 - exit ;; - 9000/[34]??:4.3bsd:1.*:*) - echo m68k-hp-bsd - exit ;; - hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) - echo m68k-hp-bsd4.4 - exit ;; - 9000/[34678]??:HP-UX:*:*) - HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` - case "${UNAME_MACHINE}" in - 9000/31? ) HP_ARCH=m68000 ;; - 9000/[34]?? ) HP_ARCH=m68k ;; - 9000/[678][0-9][0-9]) - if [ -x /usr/bin/getconf ]; then - sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` - sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` - case "${sc_cpu_version}" in - 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0 - 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1 - 532) # CPU_PA_RISC2_0 - case "${sc_kernel_bits}" in - 32) HP_ARCH="hppa2.0n" ;; - 64) HP_ARCH="hppa2.0w" ;; - '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20 - esac ;; - esac - fi - if [ "${HP_ARCH}" = "" ]; then - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - - #define _HPUX_SOURCE - #include - #include - - int main () - { - #if defined(_SC_KERNEL_BITS) - long bits = sysconf(_SC_KERNEL_BITS); - #endif - long cpu = sysconf (_SC_CPU_VERSION); - - switch (cpu) - { - case CPU_PA_RISC1_0: puts ("hppa1.0"); break; - case CPU_PA_RISC1_1: puts ("hppa1.1"); break; - case CPU_PA_RISC2_0: - #if defined(_SC_KERNEL_BITS) - switch (bits) - { - case 64: puts ("hppa2.0w"); break; - case 32: puts ("hppa2.0n"); break; - default: puts ("hppa2.0"); break; - } break; - #else /* !defined(_SC_KERNEL_BITS) */ - puts ("hppa2.0"); break; - #endif - default: puts ("hppa1.0"); break; - } - exit (0); - } -EOF - (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` - test -z "$HP_ARCH" && HP_ARCH=hppa - fi ;; - esac - if [ ${HP_ARCH} = "hppa2.0w" ] - then - eval $set_cc_for_build - - # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating - # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler - # generating 64-bit code. GNU and HP use different nomenclature: - # - # $ CC_FOR_BUILD=cc ./config.guess - # => hppa2.0w-hp-hpux11.23 - # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess - # => hppa64-hp-hpux11.23 - - if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | - grep __LP64__ >/dev/null - then - HP_ARCH="hppa2.0w" - else - HP_ARCH="hppa64" - fi - fi - echo ${HP_ARCH}-hp-hpux${HPUX_REV} - exit ;; - ia64:HP-UX:*:*) - HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` - echo ia64-hp-hpux${HPUX_REV} - exit ;; - 3050*:HI-UX:*:*) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #include - int - main () - { - long cpu = sysconf (_SC_CPU_VERSION); - /* The order matters, because CPU_IS_HP_MC68K erroneously returns - true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct - results, however. */ - if (CPU_IS_PA_RISC (cpu)) - { - switch (cpu) - { - case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; - case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; - case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; - default: puts ("hppa-hitachi-hiuxwe2"); break; - } - } - else if (CPU_IS_HP_MC68K (cpu)) - puts ("m68k-hitachi-hiuxwe2"); - else puts ("unknown-hitachi-hiuxwe2"); - exit (0); - } -EOF - $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && - { echo "$SYSTEM_NAME"; exit; } - echo unknown-hitachi-hiuxwe2 - exit ;; - 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) - echo hppa1.1-hp-bsd - exit ;; - 9000/8??:4.3bsd:*:*) - echo hppa1.0-hp-bsd - exit ;; - *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) - echo hppa1.0-hp-mpeix - exit ;; - hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) - echo hppa1.1-hp-osf - exit ;; - hp8??:OSF1:*:*) - echo hppa1.0-hp-osf - exit ;; - i*86:OSF1:*:*) - if [ -x /usr/sbin/sysversion ] ; then - echo ${UNAME_MACHINE}-unknown-osf1mk - else - echo ${UNAME_MACHINE}-unknown-osf1 - fi - exit ;; - parisc*:Lites*:*:*) - echo hppa1.1-hp-lites - exit ;; - C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) - echo c1-convex-bsd - exit ;; - C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) - if getsysinfo -f scalar_acc - then echo c32-convex-bsd - else echo c2-convex-bsd - fi - exit ;; - C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) - echo c34-convex-bsd - exit ;; - C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) - echo c38-convex-bsd - exit ;; - C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) - echo c4-convex-bsd - exit ;; - CRAY*Y-MP:*:*:*) - echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*[A-Z]90:*:*:*) - echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ - | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ - -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ - -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*TS:*:*:*) - echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*T3E:*:*:*) - echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*SV1:*:*:*) - echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - *:UNICOS/mp:*:*) - echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) - FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` - FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` - FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` - echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" - exit ;; - 5000:UNIX_System_V:4.*:*) - FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` - FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'` - echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" - exit ;; - i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) - echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} - exit ;; - sparc*:BSD/OS:*:*) - echo sparc-unknown-bsdi${UNAME_RELEASE} - exit ;; - *:BSD/OS:*:*) - echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} - exit ;; - *:FreeBSD:*:*) - case ${UNAME_MACHINE} in - pc98) - echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - amd64) - echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - *) - echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - esac - exit ;; - i*:CYGWIN*:*) - echo ${UNAME_MACHINE}-pc-cygwin - exit ;; - *:MINGW*:*) - echo ${UNAME_MACHINE}-pc-mingw32 - exit ;; - i*:windows32*:*) - # uname -m includes "-pc" on this system. - echo ${UNAME_MACHINE}-mingw32 - exit ;; - i*:PW*:*) - echo ${UNAME_MACHINE}-pc-pw32 - exit ;; - *:Interix*:[3456]*) - case ${UNAME_MACHINE} in - x86) - echo i586-pc-interix${UNAME_RELEASE} - exit ;; - EM64T | authenticamd) - echo x86_64-unknown-interix${UNAME_RELEASE} - exit ;; - IA64) - echo ia64-unknown-interix${UNAME_RELEASE} - exit ;; - esac ;; - [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) - echo i${UNAME_MACHINE}-pc-mks - exit ;; - i*:Windows_NT*:* | Pentium*:Windows_NT*:*) - # How do we know it's Interix rather than the generic POSIX subsystem? - # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we - # UNAME_MACHINE based on the output of uname instead of i386? - echo i586-pc-interix - exit ;; - i*:UWIN*:*) - echo ${UNAME_MACHINE}-pc-uwin - exit ;; - amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) - echo x86_64-unknown-cygwin - exit ;; - p*:CYGWIN*:*) - echo powerpcle-unknown-cygwin - exit ;; - prep*:SunOS:5.*:*) - echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit ;; - *:GNU:*:*) - # the GNU system - echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` - exit ;; - *:GNU/*:*:*) - # other systems with GNU libc and userland - echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu - exit ;; - i*86:Minix:*:*) - echo ${UNAME_MACHINE}-pc-minix - exit ;; - arm*:Linux:*:*) - eval $set_cc_for_build - if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ - | grep -q __ARM_EABI__ - then - echo ${UNAME_MACHINE}-unknown-linux-gnu - else - echo ${UNAME_MACHINE}-unknown-linux-gnueabi - fi - exit ;; - avr32*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - cris:Linux:*:*) - echo cris-axis-linux-gnu - exit ;; - crisv32:Linux:*:*) - echo crisv32-axis-linux-gnu - exit ;; - frv:Linux:*:*) - echo frv-unknown-linux-gnu - exit ;; - ia64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - m32r*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - m68*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - mips:Linux:*:*) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #undef CPU - #undef mips - #undef mipsel - #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) - CPU=mipsel - #else - #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) - CPU=mips - #else - CPU= - #endif - #endif -EOF - eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' - /^CPU/{ - s: ::g - p - }'`" - test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; } - ;; - mips64:Linux:*:*) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #undef CPU - #undef mips64 - #undef mips64el - #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) - CPU=mips64el - #else - #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) - CPU=mips64 - #else - CPU= - #endif - #endif -EOF - eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' - /^CPU/{ - s: ::g - p - }'`" - test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; } - ;; - or32:Linux:*:*) - echo or32-unknown-linux-gnu - exit ;; - ppc:Linux:*:*) - echo powerpc-unknown-linux-gnu - exit ;; - ppc64:Linux:*:*) - echo powerpc64-unknown-linux-gnu - exit ;; - alpha:Linux:*:*) - case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in - EV5) UNAME_MACHINE=alphaev5 ;; - EV56) UNAME_MACHINE=alphaev56 ;; - PCA56) UNAME_MACHINE=alphapca56 ;; - PCA57) UNAME_MACHINE=alphapca56 ;; - EV6) UNAME_MACHINE=alphaev6 ;; - EV67) UNAME_MACHINE=alphaev67 ;; - EV68*) UNAME_MACHINE=alphaev68 ;; - esac - objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null - if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi - echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC} - exit ;; - parisc:Linux:*:* | hppa:Linux:*:*) - # Look for CPU level - case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in - PA7*) echo hppa1.1-unknown-linux-gnu ;; - PA8*) echo hppa2.0-unknown-linux-gnu ;; - *) echo hppa-unknown-linux-gnu ;; - esac - exit ;; - parisc64:Linux:*:* | hppa64:Linux:*:*) - echo hppa64-unknown-linux-gnu - exit ;; - s390:Linux:*:* | s390x:Linux:*:*) - echo ${UNAME_MACHINE}-ibm-linux - exit ;; - sh64*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - sh*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - sparc:Linux:*:* | sparc64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - vax:Linux:*:*) - echo ${UNAME_MACHINE}-dec-linux-gnu - exit ;; - x86_64:Linux:*:*) - echo x86_64-unknown-linux-gnu - exit ;; - xtensa*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-gnu - exit ;; - i*86:Linux:*:*) - # The BFD linker knows what the default object file format is, so - # first see if it will tell us. cd to the root directory to prevent - # problems with other programs or directories called `ld' in the path. - # Set LC_ALL=C to ensure ld outputs messages in English. - ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \ - | sed -ne '/supported targets:/!d - s/[ ][ ]*/ /g - s/.*supported targets: *// - s/ .*// - p'` - case "$ld_supported_targets" in - elf32-i386) - TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu" - ;; 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exit; } - ;; - i*86:DYNIX/ptx:4*:*) - # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. - # earlier versions are messed up and put the nodename in both - # sysname and nodename. - echo i386-sequent-sysv4 - exit ;; - i*86:UNIX_SV:4.2MP:2.*) - # Unixware is an offshoot of SVR4, but it has its own version - # number series starting with 2... - # I am not positive that other SVR4 systems won't match this, - # I just have to hope. -- rms. - # Use sysv4.2uw... so that sysv4* matches it. - echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} - exit ;; - i*86:OS/2:*:*) - # If we were able to find `uname', then EMX Unix compatibility - # is probably installed. - echo ${UNAME_MACHINE}-pc-os2-emx - exit ;; - i*86:XTS-300:*:STOP) - echo ${UNAME_MACHINE}-unknown-stop - exit ;; - i*86:atheos:*:*) - echo ${UNAME_MACHINE}-unknown-atheos - exit ;; - i*86:syllable:*:*) - echo ${UNAME_MACHINE}-pc-syllable - exit ;; - i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*) - echo i386-unknown-lynxos${UNAME_RELEASE} - exit ;; - i*86:*DOS:*:*) - echo ${UNAME_MACHINE}-pc-msdosdjgpp - exit ;; - i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) - UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` - if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then - echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} - else - echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} - fi - exit ;; - i*86:*:5:[678]*) - # UnixWare 7.x, OpenUNIX and OpenServer 6. - case `/bin/uname -X | grep "^Machine"` in - *486*) UNAME_MACHINE=i486 ;; - *Pentium) UNAME_MACHINE=i586 ;; - *Pent*|*Celeron) UNAME_MACHINE=i686 ;; - esac - echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} - exit ;; - i*86:*:3.2:*) - if test -f /usr/options/cb.name; then - UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then - UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` - (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 - (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ - && UNAME_MACHINE=i586 - (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ - && UNAME_MACHINE=i686 - (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ - && UNAME_MACHINE=i686 - echo ${UNAME_MACHINE}-pc-sco$UNAME_REL - else - echo ${UNAME_MACHINE}-pc-sysv32 - fi - exit ;; - pc:*:*:*) - # Left here for compatibility: - # uname -m prints for DJGPP always 'pc', but it prints nothing about - # the processor, so we play safe by assuming i386. - echo i386-pc-msdosdjgpp - exit ;; - Intel:Mach:3*:*) - echo i386-pc-mach3 - exit ;; - paragon:*:*:*) - echo i860-intel-osf1 - exit ;; - i860:*:4.*:*) # i860-SVR4 - if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then - echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 - else # Add other i860-SVR4 vendors below as they are discovered. - echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 - fi - exit ;; - mini*:CTIX:SYS*5:*) - # "miniframe" - echo m68010-convergent-sysv - exit ;; - mc68k:UNIX:SYSTEM5:3.51m) - echo m68k-convergent-sysv - exit ;; - M680?0:D-NIX:5.3:*) - echo m68k-diab-dnix - exit ;; - M68*:*:R3V[5678]*:*) - test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; - 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) - OS_REL='' - test -r /etc/.relid \ - && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && { echo i486-ncr-sysv4.3${OS_REL}; exit; } - /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ - && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; - 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && { echo i486-ncr-sysv4; exit; } ;; - m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) - echo m68k-unknown-lynxos${UNAME_RELEASE} - exit ;; - mc68030:UNIX_System_V:4.*:*) - echo m68k-atari-sysv4 - exit ;; - TSUNAMI:LynxOS:2.*:*) - echo sparc-unknown-lynxos${UNAME_RELEASE} - exit ;; - rs6000:LynxOS:2.*:*) - echo rs6000-unknown-lynxos${UNAME_RELEASE} - exit ;; - PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*) - echo powerpc-unknown-lynxos${UNAME_RELEASE} - exit ;; - SM[BE]S:UNIX_SV:*:*) - echo mips-dde-sysv${UNAME_RELEASE} - exit ;; - RM*:ReliantUNIX-*:*:*) - echo mips-sni-sysv4 - exit ;; - RM*:SINIX-*:*:*) - echo mips-sni-sysv4 - exit ;; - *:SINIX-*:*:*) - if uname -p 2>/dev/null >/dev/null ; then - UNAME_MACHINE=`(uname -p) 2>/dev/null` - echo ${UNAME_MACHINE}-sni-sysv4 - else - echo ns32k-sni-sysv - fi - exit ;; - PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort - # says - echo i586-unisys-sysv4 - exit ;; - *:UNIX_System_V:4*:FTX*) - # From Gerald Hewes . - # How about differentiating between stratus architectures? -djm - echo hppa1.1-stratus-sysv4 - exit ;; - *:*:*:FTX*) - # From seanf@swdc.stratus.com. - echo i860-stratus-sysv4 - exit ;; - i*86:VOS:*:*) - # From Paul.Green@stratus.com. - echo ${UNAME_MACHINE}-stratus-vos - exit ;; - *:VOS:*:*) - # From Paul.Green@stratus.com. - echo hppa1.1-stratus-vos - exit ;; - mc68*:A/UX:*:*) - echo m68k-apple-aux${UNAME_RELEASE} - exit ;; - news*:NEWS-OS:6*:*) - echo mips-sony-newsos6 - exit ;; - R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) - if [ -d /usr/nec ]; then - echo mips-nec-sysv${UNAME_RELEASE} - else - echo mips-unknown-sysv${UNAME_RELEASE} - fi - exit ;; - BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. - echo powerpc-be-beos - exit ;; - BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. - echo powerpc-apple-beos - exit ;; - BePC:BeOS:*:*) # BeOS running on Intel PC compatible. - echo i586-pc-beos - exit ;; - SX-4:SUPER-UX:*:*) - echo sx4-nec-superux${UNAME_RELEASE} - exit ;; - SX-5:SUPER-UX:*:*) - echo sx5-nec-superux${UNAME_RELEASE} - exit ;; - SX-6:SUPER-UX:*:*) - echo sx6-nec-superux${UNAME_RELEASE} - exit ;; - SX-7:SUPER-UX:*:*) - echo sx7-nec-superux${UNAME_RELEASE} - exit ;; - SX-8:SUPER-UX:*:*) - echo sx8-nec-superux${UNAME_RELEASE} - exit ;; - SX-8R:SUPER-UX:*:*) - echo sx8r-nec-superux${UNAME_RELEASE} - exit ;; - Power*:Rhapsody:*:*) - echo powerpc-apple-rhapsody${UNAME_RELEASE} - exit ;; - *:Rhapsody:*:*) - echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} - exit ;; - *:Darwin:*:*) - UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown - case $UNAME_PROCESSOR in - unknown) UNAME_PROCESSOR=powerpc ;; - esac - echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} - exit ;; - *:procnto*:*:* | *:QNX:[0123456789]*:*) - UNAME_PROCESSOR=`uname -p` - if test "$UNAME_PROCESSOR" = "x86"; then - UNAME_PROCESSOR=i386 - UNAME_MACHINE=pc - fi - echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} - exit ;; - *:QNX:*:4*) - echo i386-pc-qnx - exit ;; - NSE-?:NONSTOP_KERNEL:*:*) - echo nse-tandem-nsk${UNAME_RELEASE} - exit ;; - NSR-?:NONSTOP_KERNEL:*:*) - echo nsr-tandem-nsk${UNAME_RELEASE} - exit ;; - *:NonStop-UX:*:*) - echo mips-compaq-nonstopux - exit ;; - BS2000:POSIX*:*:*) - echo bs2000-siemens-sysv - exit ;; - DS/*:UNIX_System_V:*:*) - echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} - exit ;; - *:Plan9:*:*) - # "uname -m" is not consistent, so use $cputype instead. 386 - # is converted to i386 for consistency with other x86 - # operating systems. - if test "$cputype" = "386"; then - UNAME_MACHINE=i386 - else - UNAME_MACHINE="$cputype" - fi - echo ${UNAME_MACHINE}-unknown-plan9 - exit ;; - *:TOPS-10:*:*) - echo pdp10-unknown-tops10 - exit ;; - *:TENEX:*:*) - echo pdp10-unknown-tenex - exit ;; - KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) - echo pdp10-dec-tops20 - exit ;; - XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) - echo pdp10-xkl-tops20 - exit ;; - *:TOPS-20:*:*) - echo pdp10-unknown-tops20 - exit ;; - *:ITS:*:*) - echo pdp10-unknown-its - exit ;; - SEI:*:*:SEIUX) - echo mips-sei-seiux${UNAME_RELEASE} - exit ;; - *:DragonFly:*:*) - echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` - exit ;; - *:*VMS:*:*) - UNAME_MACHINE=`(uname -p) 2>/dev/null` - case "${UNAME_MACHINE}" in - A*) echo alpha-dec-vms ; exit ;; - I*) echo ia64-dec-vms ; exit ;; - V*) echo vax-dec-vms ; exit ;; - esac ;; - *:XENIX:*:SysV) - echo i386-pc-xenix - exit ;; - i*86:skyos:*:*) - echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//' - exit ;; - i*86:rdos:*:*) - echo ${UNAME_MACHINE}-pc-rdos - exit ;; -esac - -#echo '(No uname command or uname output not recognized.)' 1>&2 -#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2 - -eval $set_cc_for_build -cat >$dummy.c < -# include -#endif -main () -{ -#if defined (sony) -#if defined (MIPSEB) - /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, - I don't know.... */ - printf ("mips-sony-bsd\n"); exit (0); -#else -#include - printf ("m68k-sony-newsos%s\n", -#ifdef NEWSOS4 - "4" -#else - "" -#endif - ); exit (0); -#endif -#endif - -#if defined (__arm) && defined (__acorn) && defined (__unix) - printf ("arm-acorn-riscix\n"); exit (0); -#endif - -#if defined (hp300) && !defined (hpux) - printf ("m68k-hp-bsd\n"); exit (0); -#endif - -#if defined (NeXT) -#if !defined (__ARCHITECTURE__) -#define __ARCHITECTURE__ "m68k" -#endif - int version; - version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; - if (version < 4) - printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); - else - printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); - exit (0); -#endif - -#if defined (MULTIMAX) || defined (n16) -#if defined (UMAXV) - printf ("ns32k-encore-sysv\n"); exit (0); -#else -#if defined (CMU) - printf ("ns32k-encore-mach\n"); exit (0); -#else - printf ("ns32k-encore-bsd\n"); exit (0); -#endif -#endif -#endif - -#if defined (__386BSD__) - printf ("i386-pc-bsd\n"); exit (0); -#endif - -#if defined (sequent) -#if defined (i386) - printf ("i386-sequent-dynix\n"); exit (0); -#endif -#if defined (ns32000) - printf ("ns32k-sequent-dynix\n"); exit (0); -#endif -#endif - -#if defined (_SEQUENT_) - struct utsname un; - - uname(&un); - - if (strncmp(un.version, "V2", 2) == 0) { - printf ("i386-sequent-ptx2\n"); exit (0); - } - if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ - printf ("i386-sequent-ptx1\n"); exit (0); - } - printf ("i386-sequent-ptx\n"); exit (0); - -#endif - -#if defined (vax) -# if !defined (ultrix) -# include -# if defined (BSD) -# if BSD == 43 - printf ("vax-dec-bsd4.3\n"); exit (0); -# else -# if BSD == 199006 - printf ("vax-dec-bsd4.3reno\n"); exit (0); -# else - printf ("vax-dec-bsd\n"); exit (0); -# endif -# endif -# else - printf ("vax-dec-bsd\n"); exit (0); -# endif -# else - printf ("vax-dec-ultrix\n"); exit (0); -# endif -#endif - -#if defined (alliant) && defined (i860) - printf ("i860-alliant-bsd\n"); exit (0); -#endif - - exit (1); -} -EOF - -$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` && - { echo "$SYSTEM_NAME"; exit; } - -# Apollos put the system type in the environment. - -test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; } - -# Convex versions that predate uname can use getsysinfo(1) - -if [ -x /usr/convex/getsysinfo ] -then - case `getsysinfo -f cpu_type` in - c1*) - echo c1-convex-bsd - exit ;; - c2*) - if getsysinfo -f scalar_acc - then echo c32-convex-bsd - else echo c2-convex-bsd - fi - exit ;; - c34*) - echo c34-convex-bsd - exit ;; - c38*) - echo c38-convex-bsd - exit ;; - c4*) - echo c4-convex-bsd - exit ;; - esac -fi - -cat >&2 < in order to provide the needed -information to handle your system. - -config.guess timestamp = $timestamp - -uname -m = `(uname -m) 2>/dev/null || echo unknown` -uname -r = `(uname -r) 2>/dev/null || echo unknown` -uname -s = `(uname -s) 2>/dev/null || echo unknown` -uname -v = `(uname -v) 2>/dev/null || echo unknown` - -/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` -/bin/uname -X = `(/bin/uname -X) 2>/dev/null` - -hostinfo = `(hostinfo) 2>/dev/null` -/bin/universe = `(/bin/universe) 2>/dev/null` -/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` -/bin/arch = `(/bin/arch) 2>/dev/null` -/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` -/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` - -UNAME_MACHINE = ${UNAME_MACHINE} -UNAME_RELEASE = ${UNAME_RELEASE} -UNAME_SYSTEM = ${UNAME_SYSTEM} -UNAME_VERSION = ${UNAME_VERSION} -EOF - -exit 1 - -# Local variables: -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "timestamp='" -# time-stamp-format: "%:y-%02m-%02d" -# time-stamp-end: "'" -# End: diff --git a/deps/uv/ev/config.h.in b/deps/uv/ev/config.h.in deleted file mode 100644 index 75da15cce7..0000000000 --- a/deps/uv/ev/config.h.in +++ /dev/null @@ -1,125 +0,0 @@ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the `clock_gettime' function. */ -#undef HAVE_CLOCK_GETTIME - -/* "use syscall interface for clock_gettime" */ -#undef HAVE_CLOCK_SYSCALL - -/* Define to 1 if you have the header file. */ -#undef HAVE_DLFCN_H - -/* Define to 1 if you have the `epoll_ctl' function. */ -#undef HAVE_EPOLL_CTL - -/* Define to 1 if you have the `eventfd' function. */ -#undef HAVE_EVENTFD - -/* Define to 1 if you have the `inotify_init' function. */ -#undef HAVE_INOTIFY_INIT - -/* Define to 1 if you have the header file. */ -#undef HAVE_INTTYPES_H - -/* Define to 1 if you have the `kqueue' function. */ -#undef HAVE_KQUEUE - -/* Define to 1 if you have the `m' library (-lm). */ -#undef HAVE_LIBM - -/* Define to 1 if you have the `rt' library (-lrt). */ -#undef HAVE_LIBRT - -/* Define to 1 if you have the header file. */ -#undef HAVE_MEMORY_H - -/* Define to 1 if you have the `nanosleep' function. */ -#undef HAVE_NANOSLEEP - -/* Define to 1 if you have the `poll' function. */ -#undef HAVE_POLL - -/* Define to 1 if you have the header file. */ -#undef HAVE_POLL_H - -/* Define to 1 if you have the `port_create' function. */ -#undef HAVE_PORT_CREATE - -/* Define to 1 if you have the header file. */ -#undef HAVE_PORT_H - -/* Define to 1 if you have the `select' function. */ -#undef HAVE_SELECT - -/* Define to 1 if you have the `signalfd' function. */ -#undef HAVE_SIGNALFD - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDINT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDLIB_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRINGS_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRING_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_EPOLL_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_EVENTFD_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_EVENT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_INOTIFY_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_SELECT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_SIGNALFD_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_STAT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_TYPES_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_UNISTD_H - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#undef LT_OBJDIR - -/* Name of package */ -#undef PACKAGE - -/* Define to the address where bug reports for this package should be sent. */ -#undef PACKAGE_BUGREPORT - -/* Define to the full name of this package. */ -#undef PACKAGE_NAME - -/* Define to the full name and version of this package. */ -#undef PACKAGE_STRING - -/* Define to the one symbol short name of this package. */ -#undef PACKAGE_TARNAME - -/* Define to the home page for this package. */ -#undef PACKAGE_URL - -/* Define to the version of this package. */ -#undef PACKAGE_VERSION - -/* Define to 1 if you have the ANSI C header files. */ -#undef STDC_HEADERS - -/* Version number of package */ -#undef VERSION diff --git a/deps/uv/ev/config.sub b/deps/uv/ev/config.sub deleted file mode 100755 index 6759825a5b..0000000000 --- a/deps/uv/ev/config.sub +++ /dev/null @@ -1,1658 +0,0 @@ -#! /bin/sh -# Configuration validation subroutine script. -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, -# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 -# Free Software Foundation, Inc. - -timestamp='2008-01-16' - -# This file is (in principle) common to ALL GNU software. -# The presence of a machine in this file suggests that SOME GNU software -# can handle that machine. It does not imply ALL GNU software can. -# -# This file is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA -# 02110-1301, USA. -# -# As a special exception to the GNU General Public License, if you -# distribute this file as part of a program that contains a -# configuration script generated by Autoconf, you may include it under -# the same distribution terms that you use for the rest of that program. - - -# Please send patches to . Submit a context -# diff and a properly formatted ChangeLog entry. -# -# Configuration subroutine to validate and canonicalize a configuration type. -# Supply the specified configuration type as an argument. -# If it is invalid, we print an error message on stderr and exit with code 1. -# Otherwise, we print the canonical config type on stdout and succeed. - -# This file is supposed to be the same for all GNU packages -# and recognize all the CPU types, system types and aliases -# that are meaningful with *any* GNU software. -# Each package is responsible for reporting which valid configurations -# it does not support. The user should be able to distinguish -# a failure to support a valid configuration from a meaningless -# configuration. - -# The goal of this file is to map all the various variations of a given -# machine specification into a single specification in the form: -# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM -# or in some cases, the newer four-part form: -# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM -# It is wrong to echo any other type of specification. - -me=`echo "$0" | sed -e 's,.*/,,'` - -usage="\ -Usage: $0 [OPTION] CPU-MFR-OPSYS - $0 [OPTION] ALIAS - -Canonicalize a configuration name. - -Operation modes: - -h, --help print this help, then exit - -t, --time-stamp print date of last modification, then exit - -v, --version print version number, then exit - -Report bugs and patches to ." - -version="\ -GNU config.sub ($timestamp) - -Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, -2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. - -This is free software; see the source for copying conditions. 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We pick the logical manufacturer. -vendor=unknown -case $basic_machine in - *-unknown) - case $os in - -riscix*) - vendor=acorn - ;; - -sunos*) - vendor=sun - ;; - -aix*) - vendor=ibm - ;; - -beos*) - vendor=be - ;; - -hpux*) - vendor=hp - ;; - -mpeix*) - vendor=hp - ;; - -hiux*) - vendor=hitachi - ;; - -unos*) - vendor=crds - ;; - -dgux*) - vendor=dg - ;; - -luna*) - vendor=omron - ;; - -genix*) - vendor=ns - ;; - -mvs* | -opened*) - vendor=ibm - ;; - -os400*) - vendor=ibm - ;; - -ptx*) - vendor=sequent - ;; - -tpf*) - vendor=ibm - ;; - -vxsim* | -vxworks* | -windiss*) - vendor=wrs - ;; - -aux*) - vendor=apple - ;; - -hms*) - vendor=hitachi - ;; - -mpw* | -macos*) - vendor=apple - ;; - -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) - vendor=atari - ;; - -vos*) - vendor=stratus - ;; - esac - basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"` - ;; -esac - -echo $basic_machine$os -exit - -# Local variables: -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "timestamp='" -# time-stamp-format: "%:y-%02m-%02d" -# time-stamp-end: "'" -# End: diff --git a/deps/uv/ev/config_cygwin.h b/deps/uv/ev/config_cygwin.h deleted file mode 100644 index 1f6f6d98c8..0000000000 --- a/deps/uv/ev/config_cygwin.h +++ /dev/null @@ -1,123 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the `clock_gettime' function. */ -/* #undef HAVE_CLOCK_GETTIME */ - -/* "use syscall interface for clock_gettime" */ -/* #undef HAVE_CLOCK_SYSCALL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the `epoll_ctl' function. */ -/* #undef HAVE_EPOLL_CTL */ - -/* Define to 1 if you have the `eventfd' function. */ -/* #undef HAVE_EVENTFD */ - -/* Define to 1 if you have the `inotify_init' function. */ -/* #undef HAVE_INOTIFY_INIT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the `kqueue' function. */ -/* #undef HAVE_KQUEUE */ - -/* Define to 1 if you have the `m' library (-lm). */ -#define HAVE_LIBM 1 - -/* Define to 1 if you have the `rt' library (-lrt). */ -/* #undef HAVE_LIBRT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the `nanosleep' function. */ -/* #undef HAVE_NANOSLEEP */ - -/* Define to 1 if you have the `poll' function. */ -#define HAVE_POLL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_POLL_H 1 - -/* Define to 1 if you have the `port_create' function. */ -/* #undef HAVE_PORT_CREATE */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_PORT_H */ - -/* Define to 1 if you have the `select' function. */ -#define HAVE_SELECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EPOLL_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EVENTFD_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EVENT_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_INOTIFY_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_QUEUE_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libev" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "3.9" diff --git a/deps/uv/ev/config_darwin.h b/deps/uv/ev/config_darwin.h deleted file mode 100644 index 03e3b219ec..0000000000 --- a/deps/uv/ev/config_darwin.h +++ /dev/null @@ -1,122 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the `clock_gettime' function. */ -/* #undef HAVE_CLOCK_GETTIME */ - -/* "use syscall interface for clock_gettime" */ -/* #undef HAVE_CLOCK_SYSCALL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the `epoll_ctl' function. */ -/* #undef HAVE_EPOLL_CTL */ - -/* Define to 1 if you have the `eventfd' function. */ -/* #undef HAVE_EVENTFD */ - -/* Define to 1 if you have the `inotify_init' function. */ -/* #undef HAVE_INOTIFY_INIT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the `kqueue' function. */ -#define HAVE_KQUEUE 1 - -/* Define to 1 if you have the `m' library (-lm). */ -#define HAVE_LIBM 1 - -/* Define to 1 if you have the `rt' library (-lrt). */ -/* #undef HAVE_LIBRT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the `nanosleep' function. */ -/* #undef HAVE_NANOSLEEP */ - -/* Define to 1 if you have the `poll' function. */ -#define HAVE_POLL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_POLL_H 1 - -/* Define to 1 if you have the `port_create' function. */ -/* #undef HAVE_PORT_CREATE */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_PORT_H */ - -/* Define to 1 if you have the `select' function. */ -#define HAVE_SELECT 1 - -/* Define to 1 if you have the `signalfd' function. */ -/* #undef HAVE_SIGNALFD */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EPOLL_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EVENTFD_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_EVENT_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_INOTIFY_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_QUEUE_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_SIGNALFD_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Name of package */ -#define PACKAGE "libev" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "3.9" diff --git a/deps/uv/ev/config_freebsd.h b/deps/uv/ev/config_freebsd.h deleted file mode 100644 index ebebd4156d..0000000000 --- a/deps/uv/ev/config_freebsd.h +++ /dev/null @@ -1,120 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the `clock_gettime' function. */ -/* #undef HAVE_CLOCK_GETTIME */ - -/* "use syscall interface for clock_gettime" */ -/* #undef HAVE_CLOCK_SYSCALL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the `epoll_ctl' function. */ -/* #undef HAVE_EPOLL_CTL */ - -/* Define to 1 if you have the `eventfd' function. */ -/* #undef HAVE_EVENTFD */ - -/* Define to 1 if you have the `inotify_init' function. */ -/* #undef HAVE_INOTIFY_INIT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the `kqueue' function. */ -#define HAVE_KQUEUE 1 - -/* Define to 1 if you have the `m' library (-lm). */ -#define HAVE_LIBM 1 - -/* Define to 1 if you have the `rt' library (-lrt). */ -/* #undef HAVE_LIBRT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the `nanosleep' function. */ -/* #undef HAVE_NANOSLEEP */ - -/* Define to 1 if you have the `poll' function. */ -#define HAVE_POLL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_POLL_H 1 - -/* Define to 1 if you have the `port_create' function. */ -/* #undef HAVE_PORT_CREATE */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_PORT_H */ - -/* Define to 1 if you have the `select' function. */ -#define HAVE_SELECT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EPOLL_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EVENTFD_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_EVENT_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_INOTIFY_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_QUEUE_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libev" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "3.9" diff --git a/deps/uv/ev/config_linux.h b/deps/uv/ev/config_linux.h deleted file mode 100644 index 14f952de61..0000000000 --- a/deps/uv/ev/config_linux.h +++ /dev/null @@ -1,122 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the `clock_gettime' function. */ -/* #undef HAVE_CLOCK_GETTIME */ - -/* "use syscall interface for clock_gettime" */ -#define HAVE_CLOCK_SYSCALL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the `epoll_ctl' function. */ -#define HAVE_EPOLL_CTL 1 - -/* Define to 1 if you have the `eventfd' function. */ -#define HAVE_EVENTFD 1 - -/* Define to 1 if you have the `inotify_init' function. */ -#define HAVE_INOTIFY_INIT 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the `kqueue' function. */ -/* #undef HAVE_KQUEUE */ - -/* Define to 1 if you have the `m' library (-lm). */ -#define HAVE_LIBM 1 - -/* Define to 1 if you have the `rt' library (-lrt). */ -/* #undef HAVE_LIBRT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the `nanosleep' function. */ -/* #undef HAVE_NANOSLEEP */ - -/* Define to 1 if you have the `poll' function. */ -#define HAVE_POLL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_POLL_H 1 - -/* Define to 1 if you have the `port_create' function. */ -/* #undef HAVE_PORT_CREATE */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_PORT_H */ - -/* Define to 1 if you have the `select' function. */ -#define HAVE_SELECT 1 - -/* Define to 1 if you have the `signalfd' function. */ -#define HAVE_SIGNALFD 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_EPOLL_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_EVENTFD_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EVENT_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_INOTIFY_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_QUEUE_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SIGNALFD_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Name of package */ -#define PACKAGE "libev" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "3.9" diff --git a/deps/uv/ev/config_sunos.h b/deps/uv/ev/config_sunos.h deleted file mode 100644 index 9f8861d8a3..0000000000 --- a/deps/uv/ev/config_sunos.h +++ /dev/null @@ -1,122 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the `clock_gettime' function. */ -/* #undef HAVE_CLOCK_GETTIME */ - -/* "use syscall interface for clock_gettime" */ -/* #undef HAVE_CLOCK_SYSCALL */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the `epoll_ctl' function. */ -/* #undef HAVE_EPOLL_CTL */ - -/* Define to 1 if you have the `eventfd' function. */ -/* #undef HAVE_EVENTFD */ - -/* Define to 1 if you have the `inotify_init' function. */ -/* #undef HAVE_INOTIFY_INIT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the `kqueue' function. */ -/* #undef HAVE_KQUEUE */ - -/* Define to 1 if you have the `m' library (-lm). */ -#define HAVE_LIBM 1 - -/* Define to 1 if you have the `rt' library (-lrt). */ -/* #undef HAVE_LIBRT */ - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the `nanosleep' function. */ -/* #undef HAVE_NANOSLEEP */ - -/* Define to 1 if you have the `poll' function. */ -#define HAVE_POLL 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_POLL_H 1 - -/* Define to 1 if you have the `port_create' function. */ -#define HAVE_PORT_CREATE 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_PORT_H 1 - -/* Define to 1 if you have the `select' function. */ -#define HAVE_SELECT 1 - -/* Define to 1 if you have the `signalfd' function. */ -/* #undef HAVE_SIGNALFD */ - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EPOLL_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EVENTFD_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_EVENT_H */ - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_INOTIFY_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_QUEUE_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_SELECT_H 1 - -/* Define to 1 if you have the header file. */ -/* #undef HAVE_SYS_SIGNALFD_H */ - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Name of package */ -#define PACKAGE "libev" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "3.9" diff --git a/deps/uv/ev/configure b/deps/uv/ev/configure deleted file mode 100755 index 98f102f1e4..0000000000 --- a/deps/uv/ev/configure +++ /dev/null @@ -1,13037 +0,0 @@ -#! /bin/sh -# Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.67. -# -# -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, -# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software -# Foundation, Inc. -# -# -# This configure script is free software; the Free Software Foundation -# gives unlimited permission to copy, distribute and modify it. -## -------------------- ## -## M4sh Initialization. ## -## -------------------- ## - -# Be more Bourne compatible -DUALCASE=1; export DUALCASE # for MKS sh -if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : - emulate sh - NULLCMD=: - # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which - # is contrary to our usage. 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It works by - # looking at the text of this script. This case will never be run, - # since it is checked for above. - exit 1 - ;; - -none) - exec "$@" - ;; - -*) - echo "Unknown depmode $depmode" 1>&2 - exit 1 - ;; -esac - -exit 0 - -# Local Variables: -# mode: shell-script -# sh-indentation: 2 -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "scriptversion=" -# time-stamp-format: "%:y-%02m-%02d.%02H" -# time-stamp-time-zone: "UTC" -# time-stamp-end: "; # UTC" -# End: diff --git a/deps/uv/ev/ev++.h b/deps/uv/ev/ev++.h deleted file mode 100644 index ce42b5f2de..0000000000 --- a/deps/uv/ev/ev++.h +++ /dev/null @@ -1,816 +0,0 @@ -/* - * libev simple C++ wrapper classes - * - * Copyright (c) 2007,2008,2010 Marc Alexander Lehmann - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -#ifndef EVPP_H__ -#define EVPP_H__ - -#ifdef EV_H -# include EV_H -#else -# include "ev.h" -#endif - -#ifndef EV_USE_STDEXCEPT -# define EV_USE_STDEXCEPT 1 -#endif - -#if EV_USE_STDEXCEPT -# include -#endif - -namespace ev { - - typedef ev_tstamp tstamp; - - enum { - UNDEF = EV_UNDEF, - NONE = EV_NONE, - READ = EV_READ, - WRITE = EV_WRITE, -#if EV_COMPAT3 - TIMEOUT = EV_TIMEOUT, -#endif - TIMER = EV_TIMER, - PERIODIC = EV_PERIODIC, - SIGNAL = EV_SIGNAL, - CHILD = EV_CHILD, - STAT = EV_STAT, - IDLE = EV_IDLE, - CHECK = EV_CHECK, - PREPARE = EV_PREPARE, - FORK = EV_FORK, - ASYNC = EV_ASYNC, - EMBED = EV_EMBED, -# undef ERROR // some systems stupidly #define ERROR - ERROR = EV_ERROR - }; - - enum - { - AUTO = EVFLAG_AUTO, - NOENV = EVFLAG_NOENV, - FORKCHECK = EVFLAG_FORKCHECK, - - SELECT = EVBACKEND_SELECT, - POLL = EVBACKEND_POLL, - EPOLL = EVBACKEND_EPOLL, - KQUEUE = EVBACKEND_KQUEUE, - DEVPOLL = EVBACKEND_DEVPOLL, - PORT = EVBACKEND_PORT - }; - - enum - { -#if EV_COMPAT3 - NONBLOCK = EVLOOP_NONBLOCK, - ONESHOT = EVLOOP_ONESHOT, -#endif - NOWAIT = EVRUN_NOWAIT, - ONCE = EVRUN_ONCE - }; - - enum how_t - { - ONE = EVBREAK_ONE, - ALL = EVBREAK_ALL - }; - - struct bad_loop -#if EV_USE_STDEXCEPT - : std::runtime_error -#endif - { -#if EV_USE_STDEXCEPT - bad_loop () - : std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?") - { - } -#endif - }; - -#ifdef EV_AX -# undef EV_AX -#endif - -#ifdef EV_AX_ -# undef EV_AX_ -#endif - -#if EV_MULTIPLICITY -# define EV_AX raw_loop -# define EV_AX_ raw_loop, -#else -# define EV_AX -# define EV_AX_ -#endif - - struct loop_ref - { - loop_ref (EV_P) throw () -#if EV_MULTIPLICITY - : EV_AX (EV_A) -#endif - { - } - - bool operator == (const loop_ref &other) const throw () - { -#if EV_MULTIPLICITY - return EV_AX == other.EV_AX; -#else - return true; -#endif - } - - bool operator != (const loop_ref &other) const throw () - { -#if EV_MULTIPLICITY - return ! (*this == other); -#else - return false; -#endif - } - -#if EV_MULTIPLICITY - bool operator == (const EV_P) const throw () - { - return this->EV_AX == EV_A; - } - - bool operator != (const EV_P) const throw () - { - return (*this == EV_A); - } - - operator struct ev_loop * () const throw () - { - return EV_AX; - } - - operator const struct ev_loop * () const throw () - { - return EV_AX; - } - - bool is_default () const throw () - { - return EV_AX == ev_default_loop (0); - } -#endif - -#if EV_COMPAT3 - void loop (int flags = 0) - { - ev_run (EV_AX_ flags); - } - - void unloop (how_t how = ONE) throw () - { - ev_break (EV_AX_ how); - } -#endif - - void run (int flags = 0) - { - ev_run (EV_AX_ flags); - } - - void break_loop (how_t how = ONE) throw () - { - ev_break (EV_AX_ how); - } - - void post_fork () throw () - { - ev_loop_fork (EV_AX); - } - - unsigned int backend () const throw () - { - return ev_backend (EV_AX); - } - - tstamp now () const throw () - { - return ev_now (EV_AX); - } - - void ref () throw () - { - ev_ref (EV_AX); - } - - void unref () throw () - { - ev_unref (EV_AX); - } - -#if EV_FEATURE_API - unsigned int iteration () const throw () - { - return ev_iteration (EV_AX); - } - - unsigned int depth () const throw () - { - return ev_depth (EV_AX); - } - - void set_io_collect_interval (tstamp interval) throw () - { - ev_set_io_collect_interval (EV_AX_ interval); - } - - void set_timeout_collect_interval (tstamp interval) throw () - { - ev_set_timeout_collect_interval (EV_AX_ interval); - } -#endif - - // function callback - void once (int fd, int events, tstamp timeout, void (*cb)(int, void *), void *arg = 0) throw () - { - ev_once (EV_AX_ fd, events, timeout, cb, arg); - } - - // method callback - template - void once (int fd, int events, tstamp timeout, K *object) throw () - { - once (fd, events, timeout, method_thunk, object); - } - - // default method == operator () - template - void once (int fd, int events, tstamp timeout, K *object) throw () - { - once (fd, events, timeout, method_thunk, object); - } - - template - static void method_thunk (int revents, void *arg) - { - static_cast(arg)->*method - (revents); - } - - // no-argument method callback - template - void once (int fd, int events, tstamp timeout, K *object) throw () - { - once (fd, events, timeout, method_noargs_thunk, object); - } - - template - static void method_noargs_thunk (int revents, void *arg) - { - static_cast(arg)->*method - (); - } - - // simpler function callback - template - void once (int fd, int events, tstamp timeout) throw () - { - once (fd, events, timeout, simpler_func_thunk); - } - - template - static void simpler_func_thunk (int revents, void *arg) - { - (*cb) - (revents); - } - - // simplest function callback - template - void once (int fd, int events, tstamp timeout) throw () - { - once (fd, events, timeout, simplest_func_thunk); - } - - template - static void simplest_func_thunk (int revents, void *arg) - { - (*cb) - (); - } - - void feed_fd_event (int fd, int revents) throw () - { - ev_feed_fd_event (EV_AX_ fd, revents); - } - - void feed_signal_event (int signum) throw () - { - ev_feed_signal_event (EV_AX_ signum); - } - -#if EV_MULTIPLICITY - struct ev_loop* EV_AX; -#endif - - }; - -#if EV_MULTIPLICITY - struct dynamic_loop : loop_ref - { - - dynamic_loop (unsigned int flags = AUTO) throw (bad_loop) - : loop_ref (ev_loop_new (flags)) - { - if (!EV_AX) - throw bad_loop (); - } - - ~dynamic_loop () throw () - { - ev_loop_destroy (EV_AX); - EV_AX = 0; - } - - private: - - dynamic_loop (const dynamic_loop &); - - dynamic_loop & operator= (const dynamic_loop &); - - }; -#endif - - struct default_loop : loop_ref - { - default_loop (unsigned int flags = AUTO) throw (bad_loop) -#if EV_MULTIPLICITY - : loop_ref (ev_default_loop (flags)) -#endif - { - if ( -#if EV_MULTIPLICITY - !EV_AX -#else - !ev_default_loop (flags) -#endif - ) - throw bad_loop (); - } - - private: - default_loop (const default_loop &); - default_loop &operator = (const default_loop &); - }; - - inline loop_ref get_default_loop () throw () - { -#if EV_MULTIPLICITY - return ev_default_loop (0); -#else - return loop_ref (); -#endif - } - -#undef EV_AX -#undef EV_AX_ - -#undef EV_PX -#undef EV_PX_ -#if EV_MULTIPLICITY -# define EV_PX loop_ref EV_A -# define EV_PX_ loop_ref EV_A_ -#else -# define EV_PX -# define EV_PX_ -#endif - - template - struct base : ev_watcher - { - #if EV_MULTIPLICITY - EV_PX; - - // loop set - void set (EV_P) throw () - { - this->EV_A = EV_A; - } - #endif - - base (EV_PX) throw () - #if EV_MULTIPLICITY - : EV_A (EV_A) - #endif - { - ev_init (this, 0); - } - - void set_ (const void *data, void (*cb)(EV_P_ ev_watcher *w, int revents)) throw () - { - this->data = (void *)data; - ev_set_cb (static_cast(this), cb); - } - - // function callback - template - void set (void *data = 0) throw () - { - set_ (data, function_thunk); - } - - template - static void function_thunk (EV_P_ ev_watcher *w, int revents) - { - function - (*static_cast(w), revents); - } - - // method callback - template - void set (K *object) throw () - { - set_ (object, method_thunk); - } - - // default method == operator () - template - void set (K *object) throw () - { - set_ (object, method_thunk); - } - - template - static void method_thunk (EV_P_ ev_watcher *w, int revents) - { - (static_cast(w->data)->*method) - (*static_cast(w), revents); - } - - // no-argument callback - template - void set (K *object) throw () - { - set_ (object, method_noargs_thunk); - } - - template - static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents) - { - (static_cast(w->data)->*method) - (); - } - - void operator ()(int events = EV_UNDEF) - { - return - ev_cb (static_cast(this)) - (static_cast(this), events); - } - - bool is_active () const throw () - { - return ev_is_active (static_cast(this)); - } - - bool is_pending () const throw () - { - return ev_is_pending (static_cast(this)); - } - - void feed_event (int revents) throw () - { - ev_feed_event (EV_A_ static_cast(this), revents); - } - }; - - inline tstamp now () throw () - { - return ev_time (); - } - - inline void delay (tstamp interval) throw () - { - ev_sleep (interval); - } - - inline int version_major () throw () - { - return ev_version_major (); - } - - inline int version_minor () throw () - { - return ev_version_minor (); - } - - inline unsigned int supported_backends () throw () - { - return ev_supported_backends (); - } - - inline unsigned int recommended_backends () throw () - { - return ev_recommended_backends (); - } - - inline unsigned int embeddable_backends () throw () - { - return ev_embeddable_backends (); - } - - inline void set_allocator (void *(*cb)(void *ptr, long size)) throw () - { - ev_set_allocator (cb); - } - - inline void set_syserr_cb (void (*cb)(const char *msg)) throw () - { - ev_set_syserr_cb (cb); - } - - #if EV_MULTIPLICITY - #define EV_CONSTRUCT(cppstem,cstem) \ - (EV_PX = get_default_loop ()) throw () \ - : base (EV_A) \ - { \ - } - #else - #define EV_CONSTRUCT(cppstem,cstem) \ - () throw () \ - { \ - } - #endif - - /* using a template here would require quite a bit more lines, - * so a macro solution was chosen */ - #define EV_BEGIN_WATCHER(cppstem,cstem) \ - \ - struct cppstem : base \ - { \ - void start () throw () \ - { \ - ev_ ## cstem ## _start (EV_A_ static_cast(this)); \ - } \ - \ - void stop () throw () \ - { \ - ev_ ## cstem ## _stop (EV_A_ static_cast(this)); \ - } \ - \ - cppstem EV_CONSTRUCT(cppstem,cstem) \ - \ - ~cppstem () throw () \ - { \ - stop (); \ - } \ - \ - using base::set; \ - \ - private: \ - \ - cppstem (const cppstem &o); \ - \ - cppstem &operator =(const cppstem &o); \ - \ - public: - - #define EV_END_WATCHER(cppstem,cstem) \ - }; - - EV_BEGIN_WATCHER (io, io) - void set (int fd, int events) throw () - { - int active = is_active (); - if (active) stop (); - ev_io_set (static_cast(this), fd, events); - if (active) start (); - } - - void set (int events) throw () - { - int active = is_active (); - if (active) stop (); - ev_io_set (static_cast(this), fd, events); - if (active) start (); - } - - void start (int fd, int events) throw () - { - set (fd, events); - start (); - } - EV_END_WATCHER (io, io) - - EV_BEGIN_WATCHER (timer, timer) - void set (ev_tstamp after, ev_tstamp repeat = 0.) throw () - { - int active = is_active (); - if (active) stop (); - ev_timer_set (static_cast(this), after, repeat); - if (active) start (); - } - - void start (ev_tstamp after, ev_tstamp repeat = 0.) throw () - { - set (after, repeat); - start (); - } - - void again () throw () - { - ev_timer_again (EV_A_ static_cast(this)); - } - - ev_tstamp remaining () - { - return ev_timer_remaining (EV_A_ static_cast(this)); - } - EV_END_WATCHER (timer, timer) - - #if EV_PERIODIC_ENABLE - EV_BEGIN_WATCHER (periodic, periodic) - void set (ev_tstamp at, ev_tstamp interval = 0.) throw () - { - int active = is_active (); - if (active) stop (); - ev_periodic_set (static_cast(this), at, interval, 0); - if (active) start (); - } - - void start (ev_tstamp at, ev_tstamp interval = 0.) throw () - { - set (at, interval); - start (); - } - - void again () throw () - { - ev_periodic_again (EV_A_ static_cast(this)); - } - EV_END_WATCHER (periodic, periodic) - #endif - - #if EV_SIGNAL_ENABLE - EV_BEGIN_WATCHER (sig, signal) - void set (int signum) throw () - { - int active = is_active (); - if (active) stop (); - ev_signal_set (static_cast(this), signum); - if (active) start (); - } - - void start (int signum) throw () - { - set (signum); - start (); - } - EV_END_WATCHER (sig, signal) - #endif - - #if EV_CHILD_ENABLE - EV_BEGIN_WATCHER (child, child) - void set (int pid, int trace = 0) throw () - { - int active = is_active (); - if (active) stop (); - ev_child_set (static_cast(this), pid, trace); - if (active) start (); - } - - void start (int pid, int trace = 0) throw () - { - set (pid, trace); - start (); - } - EV_END_WATCHER (child, child) - #endif - - #if EV_STAT_ENABLE - EV_BEGIN_WATCHER (stat, stat) - void set (const char *path, ev_tstamp interval = 0.) throw () - { - int active = is_active (); - if (active) stop (); - ev_stat_set (static_cast(this), path, interval); - if (active) start (); - } - - void start (const char *path, ev_tstamp interval = 0.) throw () - { - stop (); - set (path, interval); - start (); - } - - void update () throw () - { - ev_stat_stat (EV_A_ static_cast(this)); - } - EV_END_WATCHER (stat, stat) - #endif - - #if EV_IDLE_ENABLE - EV_BEGIN_WATCHER (idle, idle) - void set () throw () { } - EV_END_WATCHER (idle, idle) - #endif - - #if EV_PREPARE_ENABLE - EV_BEGIN_WATCHER (prepare, prepare) - void set () throw () { } - EV_END_WATCHER (prepare, prepare) - #endif - - #if EV_CHECK_ENABLE - EV_BEGIN_WATCHER (check, check) - void set () throw () { } - EV_END_WATCHER (check, check) - #endif - - #if EV_EMBED_ENABLE - EV_BEGIN_WATCHER (embed, embed) - void set (struct ev_loop *embedded_loop) throw () - { - int active = is_active (); - if (active) stop (); - ev_embed_set (static_cast(this), embedded_loop); - if (active) start (); - } - - void start (struct ev_loop *embedded_loop) throw () - { - set (embedded_loop); - start (); - } - - void sweep () - { - ev_embed_sweep (EV_A_ static_cast(this)); - } - EV_END_WATCHER (embed, embed) - #endif - - #if EV_FORK_ENABLE - EV_BEGIN_WATCHER (fork, fork) - void set () throw () { } - EV_END_WATCHER (fork, fork) - #endif - - #if EV_ASYNC_ENABLE - EV_BEGIN_WATCHER (async, async) - void send () throw () - { - ev_async_send (EV_A_ static_cast(this)); - } - - bool async_pending () throw () - { - return ev_async_pending (static_cast(this)); - } - EV_END_WATCHER (async, async) - #endif - - #undef EV_PX - #undef EV_PX_ - #undef EV_CONSTRUCT - #undef EV_BEGIN_WATCHER - #undef EV_END_WATCHER -} - -#endif - diff --git a/deps/uv/ev/ev.3 b/deps/uv/ev/ev.3 deleted file mode 100644 index f2a4514582..0000000000 --- a/deps/uv/ev/ev.3 +++ /dev/null @@ -1,5311 +0,0 @@ -.\" Automatically generated by Pod::Man 2.22 (Pod::Simple 3.07) -.\" -.\" Standard preamble: -.\" ======================================================================== -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Vb \" Begin verbatim text -.ft CW -.nf -.ne \\$1 -.. -.de Ve \" End verbatim text -.ft R -.fi -.. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. \*(C+ will -.\" give a nicer C++. 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Always turn off hyphenation; it makes -.\" way too many mistakes in technical documents. -.if n .ad l -.nh -.SH "NAME" -libev \- a high performance full\-featured event loop written in C -.SH "SYNOPSIS" -.IX Header "SYNOPSIS" -.Vb 1 -\& #include -.Ve -.SS "\s-1EXAMPLE\s0 \s-1PROGRAM\s0" -.IX Subsection "EXAMPLE PROGRAM" -.Vb 2 -\& // a single header file is required -\& #include -\& -\& #include // for puts -\& -\& // every watcher type has its own typedef\*(Aqd struct -\& // with the name ev_TYPE -\& ev_io stdin_watcher; -\& ev_timer timeout_watcher; -\& -\& // all watcher callbacks have a similar signature -\& // this callback is called when data is readable on stdin -\& static void -\& stdin_cb (EV_P_ ev_io *w, int revents) -\& { -\& puts ("stdin ready"); -\& // for one\-shot events, one must manually stop the watcher -\& // with its corresponding stop function. -\& ev_io_stop (EV_A_ w); -\& -\& // this causes all nested ev_run\*(Aqs to stop iterating -\& ev_break (EV_A_ EVBREAK_ALL); -\& } -\& -\& // another callback, this time for a time\-out -\& static void -\& timeout_cb (EV_P_ ev_timer *w, int revents) -\& { -\& puts ("timeout"); -\& // this causes the innermost ev_run to stop iterating -\& ev_break (EV_A_ EVBREAK_ONE); -\& } -\& -\& int -\& main (void) -\& { -\& // use the default event loop unless you have special needs -\& struct ev_loop *loop = EV_DEFAULT; -\& -\& // initialise an io watcher, then start it -\& // this one will watch for stdin to become readable -\& ev_io_init (&stdin_watcher, stdin_cb, /*STDIN_FILENO*/ 0, EV_READ); -\& ev_io_start (loop, &stdin_watcher); -\& -\& // initialise a timer watcher, then start it -\& // simple non\-repeating 5.5 second timeout -\& ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.); -\& ev_timer_start (loop, &timeout_watcher); -\& -\& // now wait for events to arrive -\& ev_run (loop, 0); -\& -\& // break was called, so exit -\& return 0; -\& } -.Ve -.SH "ABOUT THIS DOCUMENT" -.IX Header "ABOUT THIS DOCUMENT" -This document documents the libev software package. -.PP -The newest version of this document is also available as an html-formatted -web page you might find easier to navigate when reading it for the first -time: . -.PP -While this document tries to be as complete as possible in documenting -libev, its usage and the rationale behind its design, it is not a tutorial -on event-based programming, nor will it introduce event-based programming -with libev. -.PP -Familiarity with event based programming techniques in general is assumed -throughout this document. -.SH "WHAT TO READ WHEN IN A HURRY" -.IX Header "WHAT TO READ WHEN IN A HURRY" -This manual tries to be very detailed, but unfortunately, this also makes -it very long. If you just want to know the basics of libev, I suggest -reading \*(L"\s-1ANATOMY\s0 \s-1OF\s0 A \s-1WATCHER\s0\*(R", then the \*(L"\s-1EXAMPLE\s0 \s-1PROGRAM\s0\*(R" above and -look up the missing functions in \*(L"\s-1GLOBAL\s0 \s-1FUNCTIONS\s0\*(R" and the \f(CW\*(C`ev_io\*(C'\fR and -\&\f(CW\*(C`ev_timer\*(C'\fR sections in \*(L"\s-1WATCHER\s0 \s-1TYPES\s0\*(R". -.SH "ABOUT LIBEV" -.IX Header "ABOUT LIBEV" -Libev is an event loop: you register interest in certain events (such as a -file descriptor being readable or a timeout occurring), and it will manage -these event sources and provide your program with events. -.PP -To do this, it must take more or less complete control over your process -(or thread) by executing the \fIevent loop\fR handler, and will then -communicate events via a callback mechanism. -.PP -You register interest in certain events by registering so-called \fIevent -watchers\fR, which are relatively small C structures you initialise with the -details of the event, and then hand it over to libev by \fIstarting\fR the -watcher. -.SS "\s-1FEATURES\s0" -.IX Subsection "FEATURES" -Libev supports \f(CW\*(C`select\*(C'\fR, \f(CW\*(C`poll\*(C'\fR, the Linux-specific \f(CW\*(C`epoll\*(C'\fR, the -BSD-specific \f(CW\*(C`kqueue\*(C'\fR and the Solaris-specific event port mechanisms -for file descriptor events (\f(CW\*(C`ev_io\*(C'\fR), the Linux \f(CW\*(C`inotify\*(C'\fR interface -(for \f(CW\*(C`ev_stat\*(C'\fR), Linux eventfd/signalfd (for faster and cleaner -inter-thread wakeup (\f(CW\*(C`ev_async\*(C'\fR)/signal handling (\f(CW\*(C`ev_signal\*(C'\fR)) relative -timers (\f(CW\*(C`ev_timer\*(C'\fR), absolute timers with customised rescheduling -(\f(CW\*(C`ev_periodic\*(C'\fR), synchronous signals (\f(CW\*(C`ev_signal\*(C'\fR), process status -change events (\f(CW\*(C`ev_child\*(C'\fR), and event watchers dealing with the event -loop mechanism itself (\f(CW\*(C`ev_idle\*(C'\fR, \f(CW\*(C`ev_embed\*(C'\fR, \f(CW\*(C`ev_prepare\*(C'\fR and -\&\f(CW\*(C`ev_check\*(C'\fR watchers) as well as file watchers (\f(CW\*(C`ev_stat\*(C'\fR) and even -limited support for fork events (\f(CW\*(C`ev_fork\*(C'\fR). -.PP -It also is quite fast (see this - comparing it to libevent -for example). -.SS "\s-1CONVENTIONS\s0" -.IX Subsection "CONVENTIONS" -Libev is very configurable. In this manual the default (and most common) -configuration will be described, which supports multiple event loops. For -more info about various configuration options please have a look at -\&\fB\s-1EMBED\s0\fR section in this manual. If libev was configured without support -for multiple event loops, then all functions taking an initial argument of -name \f(CW\*(C`loop\*(C'\fR (which is always of type \f(CW\*(C`struct ev_loop *\*(C'\fR) will not have -this argument. -.SS "\s-1TIME\s0 \s-1REPRESENTATION\s0" -.IX Subsection "TIME REPRESENTATION" -Libev represents time as a single floating point number, representing -the (fractional) number of seconds since the (\s-1POSIX\s0) epoch (in practice -somewhere near the beginning of 1970, details are complicated, don't -ask). This type is called \f(CW\*(C`ev_tstamp\*(C'\fR, which is what you should use -too. It usually aliases to the \f(CW\*(C`double\*(C'\fR type in C. When you need to do -any calculations on it, you should treat it as some floating point value. -.PP -Unlike the name component \f(CW\*(C`stamp\*(C'\fR might indicate, it is also used for -time differences (e.g. delays) throughout libev. -.SH "ERROR HANDLING" -.IX Header "ERROR HANDLING" -Libev knows three classes of errors: operating system errors, usage errors -and internal errors (bugs). -.PP -When libev catches an operating system error it cannot handle (for example -a system call indicating a condition libev cannot fix), it calls the callback -set via \f(CW\*(C`ev_set_syserr_cb\*(C'\fR, which is supposed to fix the problem or -abort. The default is to print a diagnostic message and to call \f(CW\*(C`abort -()\*(C'\fR. -.PP -When libev detects a usage error such as a negative timer interval, then -it will print a diagnostic message and abort (via the \f(CW\*(C`assert\*(C'\fR mechanism, -so \f(CW\*(C`NDEBUG\*(C'\fR will disable this checking): these are programming errors in -the libev caller and need to be fixed there. -.PP -Libev also has a few internal error-checking \f(CW\*(C`assert\*(C'\fRions, and also has -extensive consistency checking code. These do not trigger under normal -circumstances, as they indicate either a bug in libev or worse. -.SH "GLOBAL FUNCTIONS" -.IX Header "GLOBAL FUNCTIONS" -These functions can be called anytime, even before initialising the -library in any way. -.IP "ev_tstamp ev_time ()" 4 -.IX Item "ev_tstamp ev_time ()" -Returns the current time as libev would use it. Please note that the -\&\f(CW\*(C`ev_now\*(C'\fR function is usually faster and also often returns the timestamp -you actually want to know. Also interesting is the combination of -\&\f(CW\*(C`ev_update_now\*(C'\fR and \f(CW\*(C`ev_now\*(C'\fR. -.IP "ev_sleep (ev_tstamp interval)" 4 -.IX Item "ev_sleep (ev_tstamp interval)" -Sleep for the given interval: The current thread will be blocked until -either it is interrupted or the given time interval has passed. Basically -this is a sub-second-resolution \f(CW\*(C`sleep ()\*(C'\fR. -.IP "int ev_version_major ()" 4 -.IX Item "int ev_version_major ()" -.PD 0 -.IP "int ev_version_minor ()" 4 -.IX Item "int ev_version_minor ()" -.PD -You can find out the major and minor \s-1ABI\s0 version numbers of the library -you linked against by calling the functions \f(CW\*(C`ev_version_major\*(C'\fR and -\&\f(CW\*(C`ev_version_minor\*(C'\fR. If you want, you can compare against the global -symbols \f(CW\*(C`EV_VERSION_MAJOR\*(C'\fR and \f(CW\*(C`EV_VERSION_MINOR\*(C'\fR, which specify the -version of the library your program was compiled against. -.Sp -These version numbers refer to the \s-1ABI\s0 version of the library, not the -release version. -.Sp -Usually, it's a good idea to terminate if the major versions mismatch, -as this indicates an incompatible change. Minor versions are usually -compatible to older versions, so a larger minor version alone is usually -not a problem. -.Sp -Example: Make sure we haven't accidentally been linked against the wrong -version (note, however, that this will not detect other \s-1ABI\s0 mismatches, -such as \s-1LFS\s0 or reentrancy). -.Sp -.Vb 3 -\& assert (("libev version mismatch", -\& ev_version_major () == EV_VERSION_MAJOR -\& && ev_version_minor () >= EV_VERSION_MINOR)); -.Ve -.IP "unsigned int ev_supported_backends ()" 4 -.IX Item "unsigned int ev_supported_backends ()" -Return the set of all backends (i.e. their corresponding \f(CW\*(C`EV_BACKEND_*\*(C'\fR -value) compiled into this binary of libev (independent of their -availability on the system you are running on). See \f(CW\*(C`ev_default_loop\*(C'\fR for -a description of the set values. -.Sp -Example: make sure we have the epoll method, because yeah this is cool and -a must have and can we have a torrent of it please!!!11 -.Sp -.Vb 2 -\& assert (("sorry, no epoll, no sex", -\& ev_supported_backends () & EVBACKEND_EPOLL)); -.Ve -.IP "unsigned int ev_recommended_backends ()" 4 -.IX Item "unsigned int ev_recommended_backends ()" -Return the set of all backends compiled into this binary of libev and -also recommended for this platform, meaning it will work for most file -descriptor types. This set is often smaller than the one returned by -\&\f(CW\*(C`ev_supported_backends\*(C'\fR, as for example kqueue is broken on most BSDs -and will not be auto-detected unless you explicitly request it (assuming -you know what you are doing). This is the set of backends that libev will -probe for if you specify no backends explicitly. -.IP "unsigned int ev_embeddable_backends ()" 4 -.IX Item "unsigned int ev_embeddable_backends ()" -Returns the set of backends that are embeddable in other event loops. This -value is platform-specific but can include backends not available on the -current system. To find which embeddable backends might be supported on -the current system, you would need to look at \f(CW\*(C`ev_embeddable_backends () -& ev_supported_backends ()\*(C'\fR, likewise for recommended ones. -.Sp -See the description of \f(CW\*(C`ev_embed\*(C'\fR watchers for more info. -.IP "ev_set_allocator (void *(*cb)(void *ptr, long size))" 4 -.IX Item "ev_set_allocator (void *(*cb)(void *ptr, long size))" -Sets the allocation function to use (the prototype is similar \- the -semantics are identical to the \f(CW\*(C`realloc\*(C'\fR C89/SuS/POSIX function). It is -used to allocate and free memory (no surprises here). If it returns zero -when memory needs to be allocated (\f(CW\*(C`size != 0\*(C'\fR), the library might abort -or take some potentially destructive action. -.Sp -Since some systems (at least OpenBSD and Darwin) fail to implement -correct \f(CW\*(C`realloc\*(C'\fR semantics, libev will use a wrapper around the system -\&\f(CW\*(C`realloc\*(C'\fR and \f(CW\*(C`free\*(C'\fR functions by default. -.Sp -You could override this function in high-availability programs to, say, -free some memory if it cannot allocate memory, to use a special allocator, -or even to sleep a while and retry until some memory is available. -.Sp -Example: Replace the libev allocator with one that waits a bit and then -retries (example requires a standards-compliant \f(CW\*(C`realloc\*(C'\fR). -.Sp -.Vb 6 -\& static void * -\& persistent_realloc (void *ptr, size_t size) -\& { -\& for (;;) -\& { -\& void *newptr = realloc (ptr, size); -\& -\& if (newptr) -\& return newptr; -\& -\& sleep (60); -\& } -\& } -\& -\& ... -\& ev_set_allocator (persistent_realloc); -.Ve -.IP "ev_set_syserr_cb (void (*cb)(const char *msg))" 4 -.IX Item "ev_set_syserr_cb (void (*cb)(const char *msg))" -Set the callback function to call on a retryable system call error (such -as failed select, poll, epoll_wait). The message is a printable string -indicating the system call or subsystem causing the problem. If this -callback is set, then libev will expect it to remedy the situation, no -matter what, when it returns. That is, libev will generally retry the -requested operation, or, if the condition doesn't go away, do bad stuff -(such as abort). -.Sp -Example: This is basically the same thing that libev does internally, too. -.Sp -.Vb 6 -\& static void -\& fatal_error (const char *msg) -\& { -\& perror (msg); -\& abort (); -\& } -\& -\& ... -\& ev_set_syserr_cb (fatal_error); -.Ve -.IP "ev_feed_signal (int signum)" 4 -.IX Item "ev_feed_signal (int signum)" -This function can be used to \*(L"simulate\*(R" a signal receive. It is completely -safe to call this function at any time, from any context, including signal -handlers or random threads. -.Sp -Its main use is to customise signal handling in your process, especially -in the presence of threads. For example, you could block signals -by default in all threads (and specifying \f(CW\*(C`EVFLAG_NOSIGMASK\*(C'\fR when -creating any loops), and in one thread, use \f(CW\*(C`sigwait\*(C'\fR or any other -mechanism to wait for signals, then \*(L"deliver\*(R" them to libev by calling -\&\f(CW\*(C`ev_feed_signal\*(C'\fR. -.SH "FUNCTIONS CONTROLLING EVENT LOOPS" -.IX Header "FUNCTIONS CONTROLLING EVENT LOOPS" -An event loop is described by a \f(CW\*(C`struct ev_loop *\*(C'\fR (the \f(CW\*(C`struct\*(C'\fR is -\&\fInot\fR optional in this case unless libev 3 compatibility is disabled, as -libev 3 had an \f(CW\*(C`ev_loop\*(C'\fR function colliding with the struct name). -.PP -The library knows two types of such loops, the \fIdefault\fR loop, which -supports child process events, and dynamically created event loops which -do not. -.IP "struct ev_loop *ev_default_loop (unsigned int flags)" 4 -.IX Item "struct ev_loop *ev_default_loop (unsigned int flags)" -This returns the \*(L"default\*(R" event loop object, which is what you should -normally use when you just need \*(L"the event loop\*(R". Event loop objects and -the \f(CW\*(C`flags\*(C'\fR parameter are described in more detail in the entry for -\&\f(CW\*(C`ev_loop_new\*(C'\fR. -.Sp -If the default loop is already initialised then this function simply -returns it (and ignores the flags. If that is troubling you, check -\&\f(CW\*(C`ev_backend ()\*(C'\fR afterwards). Otherwise it will create it with the given -flags, which should almost always be \f(CW0\fR, unless the caller is also the -one calling \f(CW\*(C`ev_run\*(C'\fR or otherwise qualifies as \*(L"the main program\*(R". -.Sp -If you don't know what event loop to use, use the one returned from this -function (or via the \f(CW\*(C`EV_DEFAULT\*(C'\fR macro). -.Sp -Note that this function is \fInot\fR thread-safe, so if you want to use it -from multiple threads, you have to employ some kind of mutex (note also -that this case is unlikely, as loops cannot be shared easily between -threads anyway). -.Sp -The default loop is the only loop that can handle \f(CW\*(C`ev_child\*(C'\fR watchers, -and to do this, it always registers a handler for \f(CW\*(C`SIGCHLD\*(C'\fR. If this is -a problem for your application you can either create a dynamic loop with -\&\f(CW\*(C`ev_loop_new\*(C'\fR which doesn't do that, or you can simply overwrite the -\&\f(CW\*(C`SIGCHLD\*(C'\fR signal handler \fIafter\fR calling \f(CW\*(C`ev_default_init\*(C'\fR. -.Sp -Example: This is the most typical usage. -.Sp -.Vb 2 -\& if (!ev_default_loop (0)) -\& fatal ("could not initialise libev, bad $LIBEV_FLAGS in environment?"); -.Ve -.Sp -Example: Restrict libev to the select and poll backends, and do not allow -environment settings to be taken into account: -.Sp -.Vb 1 -\& ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV); -.Ve -.IP "struct ev_loop *ev_loop_new (unsigned int flags)" 4 -.IX Item "struct ev_loop *ev_loop_new (unsigned int flags)" -This will create and initialise a new event loop object. If the loop -could not be initialised, returns false. -.Sp -This function is thread-safe, and one common way to use libev with -threads is indeed to create one loop per thread, and using the default -loop in the \*(L"main\*(R" or \*(L"initial\*(R" thread. -.Sp -The flags argument can be used to specify special behaviour or specific -backends to use, and is usually specified as \f(CW0\fR (or \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). -.Sp -The following flags are supported: -.RS 4 -.ie n .IP """EVFLAG_AUTO""" 4 -.el .IP "\f(CWEVFLAG_AUTO\fR" 4 -.IX Item "EVFLAG_AUTO" -The default flags value. Use this if you have no clue (it's the right -thing, believe me). -.ie n .IP """EVFLAG_NOENV""" 4 -.el .IP "\f(CWEVFLAG_NOENV\fR" 4 -.IX Item "EVFLAG_NOENV" -If this flag bit is or'ed into the flag value (or the program runs setuid -or setgid) then libev will \fInot\fR look at the environment variable -\&\f(CW\*(C`LIBEV_FLAGS\*(C'\fR. Otherwise (the default), this environment variable will -override the flags completely if it is found in the environment. This is -useful to try out specific backends to test their performance, or to work -around bugs. -.ie n .IP """EVFLAG_FORKCHECK""" 4 -.el .IP "\f(CWEVFLAG_FORKCHECK\fR" 4 -.IX Item "EVFLAG_FORKCHECK" -Instead of calling \f(CW\*(C`ev_loop_fork\*(C'\fR manually after a fork, you can also -make libev check for a fork in each iteration by enabling this flag. -.Sp -This works by calling \f(CW\*(C`getpid ()\*(C'\fR on every iteration of the loop, -and thus this might slow down your event loop if you do a lot of loop -iterations and little real work, but is usually not noticeable (on my -GNU/Linux system for example, \f(CW\*(C`getpid\*(C'\fR is actually a simple 5\-insn sequence -without a system call and thus \fIvery\fR fast, but my GNU/Linux system also has -\&\f(CW\*(C`pthread_atfork\*(C'\fR which is even faster). -.Sp -The big advantage of this flag is that you can forget about fork (and -forget about forgetting to tell libev about forking) when you use this -flag. -.Sp -This flag setting cannot be overridden or specified in the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR -environment variable. -.ie n .IP """EVFLAG_NOINOTIFY""" 4 -.el .IP "\f(CWEVFLAG_NOINOTIFY\fR" 4 -.IX Item "EVFLAG_NOINOTIFY" -When this flag is specified, then libev will not attempt to use the -\&\fIinotify\fR \s-1API\s0 for its \f(CW\*(C`ev_stat\*(C'\fR watchers. Apart from debugging and -testing, this flag can be useful to conserve inotify file descriptors, as -otherwise each loop using \f(CW\*(C`ev_stat\*(C'\fR watchers consumes one inotify handle. -.ie n .IP """EVFLAG_SIGNALFD""" 4 -.el .IP "\f(CWEVFLAG_SIGNALFD\fR" 4 -.IX Item "EVFLAG_SIGNALFD" -When this flag is specified, then libev will attempt to use the -\&\fIsignalfd\fR \s-1API\s0 for its \f(CW\*(C`ev_signal\*(C'\fR (and \f(CW\*(C`ev_child\*(C'\fR) watchers. This \s-1API\s0 -delivers signals synchronously, which makes it both faster and might make -it possible to get the queued signal data. It can also simplify signal -handling with threads, as long as you properly block signals in your -threads that are not interested in handling them. -.Sp -Signalfd will not be used by default as this changes your signal mask, and -there are a lot of shoddy libraries and programs (glib's threadpool for -example) that can't properly initialise their signal masks. -.ie n .IP """EVFLAG_NOSIGMASK""" 4 -.el .IP "\f(CWEVFLAG_NOSIGMASK\fR" 4 -.IX Item "EVFLAG_NOSIGMASK" -When this flag is specified, then libev will avoid to modify the signal -mask. Specifically, this means you ahve to make sure signals are unblocked -when you want to receive them. -.Sp -This behaviour is useful when you want to do your own signal handling, or -want to handle signals only in specific threads and want to avoid libev -unblocking the signals. -.Sp -It's also required by \s-1POSIX\s0 in a threaded program, as libev calls -\&\f(CW\*(C`sigprocmask\*(C'\fR, whose behaviour is officially unspecified. -.Sp -This flag's behaviour will become the default in future versions of libev. -.ie n .IP """EVBACKEND_SELECT"" (value 1, portable select backend)" 4 -.el .IP "\f(CWEVBACKEND_SELECT\fR (value 1, portable select backend)" 4 -.IX Item "EVBACKEND_SELECT (value 1, portable select backend)" -This is your standard \fIselect\fR\|(2) backend. Not \fIcompletely\fR standard, as -libev tries to roll its own fd_set with no limits on the number of fds, -but if that fails, expect a fairly low limit on the number of fds when -using this backend. It doesn't scale too well (O(highest_fd)), but its -usually the fastest backend for a low number of (low-numbered :) fds. -.Sp -To get good performance out of this backend you need a high amount of -parallelism (most of the file descriptors should be busy). If you are -writing a server, you should \f(CW\*(C`accept ()\*(C'\fR in a loop to accept as many -connections as possible during one iteration. You might also want to have -a look at \f(CW\*(C`ev_set_io_collect_interval ()\*(C'\fR to increase the amount of -readiness notifications you get per iteration. -.Sp -This backend maps \f(CW\*(C`EV_READ\*(C'\fR to the \f(CW\*(C`readfds\*(C'\fR set and \f(CW\*(C`EV_WRITE\*(C'\fR to the -\&\f(CW\*(C`writefds\*(C'\fR set (and to work around Microsoft Windows bugs, also onto the -\&\f(CW\*(C`exceptfds\*(C'\fR set on that platform). -.ie n .IP """EVBACKEND_POLL"" (value 2, poll backend, available everywhere except on windows)" 4 -.el .IP "\f(CWEVBACKEND_POLL\fR (value 2, poll backend, available everywhere except on windows)" 4 -.IX Item "EVBACKEND_POLL (value 2, poll backend, available everywhere except on windows)" -And this is your standard \fIpoll\fR\|(2) backend. It's more complicated -than select, but handles sparse fds better and has no artificial -limit on the number of fds you can use (except it will slow down -considerably with a lot of inactive fds). It scales similarly to select, -i.e. O(total_fds). See the entry for \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR, above, for -performance tips. -.Sp -This backend maps \f(CW\*(C`EV_READ\*(C'\fR to \f(CW\*(C`POLLIN | POLLERR | POLLHUP\*(C'\fR, and -\&\f(CW\*(C`EV_WRITE\*(C'\fR to \f(CW\*(C`POLLOUT | POLLERR | POLLHUP\*(C'\fR. -.ie n .IP """EVBACKEND_EPOLL"" (value 4, Linux)" 4 -.el .IP "\f(CWEVBACKEND_EPOLL\fR (value 4, Linux)" 4 -.IX Item "EVBACKEND_EPOLL (value 4, Linux)" -Use the linux-specific \fIepoll\fR\|(7) interface (for both pre\- and post\-2.6.9 -kernels). -.Sp -For few fds, this backend is a bit little slower than poll and select, -but it scales phenomenally better. While poll and select usually scale -like O(total_fds) where n is the total number of fds (or the highest fd), -epoll scales either O(1) or O(active_fds). -.Sp -The epoll mechanism deserves honorable mention as the most misdesigned -of the more advanced event mechanisms: mere annoyances include silently -dropping file descriptors, requiring a system call per change per file -descriptor (and unnecessary guessing of parameters), problems with dup, -returning before the timeout value, resulting in additional iterations -(and only giving 5ms accuracy while select on the same platform gives -0.1ms) and so on. The biggest issue is fork races, however \- if a program -forks then \fIboth\fR parent and child process have to recreate the epoll -set, which can take considerable time (one syscall per file descriptor) -and is of course hard to detect. -.Sp -Epoll is also notoriously buggy \- embedding epoll fds \fIshould\fR work, but -of course \fIdoesn't\fR, and epoll just loves to report events for totally -\&\fIdifferent\fR file descriptors (even already closed ones, so one cannot -even remove them from the set) than registered in the set (especially -on \s-1SMP\s0 systems). Libev tries to counter these spurious notifications by -employing an additional generation counter and comparing that against the -events to filter out spurious ones, recreating the set when required. Last -not least, it also refuses to work with some file descriptors which work -perfectly fine with \f(CW\*(C`select\*(C'\fR (files, many character devices...). -.Sp -Epoll is truly the train wreck analog among event poll mechanisms, -a frankenpoll, cobbled together in a hurry, no thought to design or -interaction with others. -.Sp -While stopping, setting and starting an I/O watcher in the same iteration -will result in some caching, there is still a system call per such -incident (because the same \fIfile descriptor\fR could point to a different -\&\fIfile description\fR now), so its best to avoid that. Also, \f(CW\*(C`dup ()\*(C'\fR'ed -file descriptors might not work very well if you register events for both -file descriptors. -.Sp -Best performance from this backend is achieved by not unregistering all -watchers for a file descriptor until it has been closed, if possible, -i.e. keep at least one watcher active per fd at all times. Stopping and -starting a watcher (without re-setting it) also usually doesn't cause -extra overhead. A fork can both result in spurious notifications as well -as in libev having to destroy and recreate the epoll object, which can -take considerable time and thus should be avoided. -.Sp -All this means that, in practice, \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR can be as fast or -faster than epoll for maybe up to a hundred file descriptors, depending on -the usage. So sad. -.Sp -While nominally embeddable in other event loops, this feature is broken in -all kernel versions tested so far. -.Sp -This backend maps \f(CW\*(C`EV_READ\*(C'\fR and \f(CW\*(C`EV_WRITE\*(C'\fR in the same way as -\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.ie n .IP """EVBACKEND_KQUEUE"" (value 8, most \s-1BSD\s0 clones)" 4 -.el .IP "\f(CWEVBACKEND_KQUEUE\fR (value 8, most \s-1BSD\s0 clones)" 4 -.IX Item "EVBACKEND_KQUEUE (value 8, most BSD clones)" -Kqueue deserves special mention, as at the time of this writing, it -was broken on all BSDs except NetBSD (usually it doesn't work reliably -with anything but sockets and pipes, except on Darwin, where of course -it's completely useless). Unlike epoll, however, whose brokenness -is by design, these kqueue bugs can (and eventually will) be fixed -without \s-1API\s0 changes to existing programs. For this reason it's not being -\&\*(L"auto-detected\*(R" unless you explicitly specify it in the flags (i.e. using -\&\f(CW\*(C`EVBACKEND_KQUEUE\*(C'\fR) or libev was compiled on a known-to-be-good (\-enough) -system like NetBSD. -.Sp -You still can embed kqueue into a normal poll or select backend and use it -only for sockets (after having made sure that sockets work with kqueue on -the target platform). See \f(CW\*(C`ev_embed\*(C'\fR watchers for more info. -.Sp -It scales in the same way as the epoll backend, but the interface to the -kernel is more efficient (which says nothing about its actual speed, of -course). While stopping, setting and starting an I/O watcher does never -cause an extra system call as with \f(CW\*(C`EVBACKEND_EPOLL\*(C'\fR, it still adds up to -two event changes per incident. Support for \f(CW\*(C`fork ()\*(C'\fR is very bad (but -sane, unlike epoll) and it drops fds silently in similarly hard-to-detect -cases -.Sp -This backend usually performs well under most conditions. -.Sp -While nominally embeddable in other event loops, this doesn't work -everywhere, so you might need to test for this. And since it is broken -almost everywhere, you should only use it when you have a lot of sockets -(for which it usually works), by embedding it into another event loop -(e.g. \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR (but \f(CW\*(C`poll\*(C'\fR is of course -also broken on \s-1OS\s0 X)) and, did I mention it, using it only for sockets. -.Sp -This backend maps \f(CW\*(C`EV_READ\*(C'\fR into an \f(CW\*(C`EVFILT_READ\*(C'\fR kevent with -\&\f(CW\*(C`NOTE_EOF\*(C'\fR, and \f(CW\*(C`EV_WRITE\*(C'\fR into an \f(CW\*(C`EVFILT_WRITE\*(C'\fR kevent with -\&\f(CW\*(C`NOTE_EOF\*(C'\fR. -.ie n .IP """EVBACKEND_DEVPOLL"" (value 16, Solaris 8)" 4 -.el .IP "\f(CWEVBACKEND_DEVPOLL\fR (value 16, Solaris 8)" 4 -.IX Item "EVBACKEND_DEVPOLL (value 16, Solaris 8)" -This is not implemented yet (and might never be, unless you send me an -implementation). According to reports, \f(CW\*(C`/dev/poll\*(C'\fR only supports sockets -and is not embeddable, which would limit the usefulness of this backend -immensely. -.ie n .IP """EVBACKEND_PORT"" (value 32, Solaris 10)" 4 -.el .IP "\f(CWEVBACKEND_PORT\fR (value 32, Solaris 10)" 4 -.IX Item "EVBACKEND_PORT (value 32, Solaris 10)" -This uses the Solaris 10 event port mechanism. As with everything on Solaris, -it's really slow, but it still scales very well (O(active_fds)). -.Sp -While this backend scales well, it requires one system call per active -file descriptor per loop iteration. For small and medium numbers of file -descriptors a \*(L"slow\*(R" \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR backend -might perform better. -.Sp -On the positive side, this backend actually performed fully to -specification in all tests and is fully embeddable, which is a rare feat -among the OS-specific backends (I vastly prefer correctness over speed -hacks). -.Sp -On the negative side, the interface is \fIbizarre\fR \- so bizarre that -even sun itself gets it wrong in their code examples: The event polling -function sometimes returning events to the caller even though an error -occurred, but with no indication whether it has done so or not (yes, it's -even documented that way) \- deadly for edge-triggered interfaces where -you absolutely have to know whether an event occurred or not because you -have to re-arm the watcher. -.Sp -Fortunately libev seems to be able to work around these idiocies. -.Sp -This backend maps \f(CW\*(C`EV_READ\*(C'\fR and \f(CW\*(C`EV_WRITE\*(C'\fR in the same way as -\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.ie n .IP """EVBACKEND_ALL""" 4 -.el .IP "\f(CWEVBACKEND_ALL\fR" 4 -.IX Item "EVBACKEND_ALL" -Try all backends (even potentially broken ones that wouldn't be tried -with \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). Since this is a mask, you can do stuff such as -\&\f(CW\*(C`EVBACKEND_ALL & ~EVBACKEND_KQUEUE\*(C'\fR. -.Sp -It is definitely not recommended to use this flag, use whatever -\&\f(CW\*(C`ev_recommended_backends ()\*(C'\fR returns, or simply do not specify a backend -at all. -.ie n .IP """EVBACKEND_MASK""" 4 -.el .IP "\f(CWEVBACKEND_MASK\fR" 4 -.IX Item "EVBACKEND_MASK" -Not a backend at all, but a mask to select all backend bits from a -\&\f(CW\*(C`flags\*(C'\fR value, in case you want to mask out any backends from a flags -value (e.g. when modifying the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR environment variable). -.RE -.RS 4 -.Sp -If one or more of the backend flags are or'ed into the flags value, -then only these backends will be tried (in the reverse order as listed -here). If none are specified, all backends in \f(CW\*(C`ev_recommended_backends -()\*(C'\fR will be tried. -.Sp -Example: Try to create a event loop that uses epoll and nothing else. -.Sp -.Vb 3 -\& struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV); -\& if (!epoller) -\& fatal ("no epoll found here, maybe it hides under your chair"); -.Ve -.Sp -Example: Use whatever libev has to offer, but make sure that kqueue is -used if available. -.Sp -.Vb 1 -\& struct ev_loop *loop = ev_loop_new (ev_recommended_backends () | EVBACKEND_KQUEUE); -.Ve -.RE -.IP "ev_loop_destroy (loop)" 4 -.IX Item "ev_loop_destroy (loop)" -Destroys an event loop object (frees all memory and kernel state -etc.). None of the active event watchers will be stopped in the normal -sense, so e.g. \f(CW\*(C`ev_is_active\*(C'\fR might still return true. It is your -responsibility to either stop all watchers cleanly yourself \fIbefore\fR -calling this function, or cope with the fact afterwards (which is usually -the easiest thing, you can just ignore the watchers and/or \f(CW\*(C`free ()\*(C'\fR them -for example). -.Sp -Note that certain global state, such as signal state (and installed signal -handlers), will not be freed by this function, and related watchers (such -as signal and child watchers) would need to be stopped manually. -.Sp -This function is normally used on loop objects allocated by -\&\f(CW\*(C`ev_loop_new\*(C'\fR, but it can also be used on the default loop returned by -\&\f(CW\*(C`ev_default_loop\*(C'\fR, in which case it is not thread-safe. -.Sp -Note that it is not advisable to call this function on the default loop -except in the rare occasion where you really need to free its resources. -If you need dynamically allocated loops it is better to use \f(CW\*(C`ev_loop_new\*(C'\fR -and \f(CW\*(C`ev_loop_destroy\*(C'\fR. -.IP "ev_loop_fork (loop)" 4 -.IX Item "ev_loop_fork (loop)" -This function sets a flag that causes subsequent \f(CW\*(C`ev_run\*(C'\fR iterations to -reinitialise the kernel state for backends that have one. Despite the -name, you can call it anytime, but it makes most sense after forking, in -the child process. You \fImust\fR call it (or use \f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR) in the -child before resuming or calling \f(CW\*(C`ev_run\*(C'\fR. -.Sp -Again, you \fIhave\fR to call it on \fIany\fR loop that you want to re-use after -a fork, \fIeven if you do not plan to use the loop in the parent\fR. This is -because some kernel interfaces *cough* \fIkqueue\fR *cough* do funny things -during fork. -.Sp -On the other hand, you only need to call this function in the child -process if and only if you want to use the event loop in the child. If -you just fork+exec or create a new loop in the child, you don't have to -call it at all (in fact, \f(CW\*(C`epoll\*(C'\fR is so badly broken that it makes a -difference, but libev will usually detect this case on its own and do a -costly reset of the backend). -.Sp -The function itself is quite fast and it's usually not a problem to call -it just in case after a fork. -.Sp -Example: Automate calling \f(CW\*(C`ev_loop_fork\*(C'\fR on the default loop when -using pthreads. -.Sp -.Vb 5 -\& static void -\& post_fork_child (void) -\& { -\& ev_loop_fork (EV_DEFAULT); -\& } -\& -\& ... -\& pthread_atfork (0, 0, post_fork_child); -.Ve -.IP "int ev_is_default_loop (loop)" 4 -.IX Item "int ev_is_default_loop (loop)" -Returns true when the given loop is, in fact, the default loop, and false -otherwise. -.IP "unsigned int ev_iteration (loop)" 4 -.IX Item "unsigned int ev_iteration (loop)" -Returns the current iteration count for the event loop, which is identical -to the number of times libev did poll for new events. It starts at \f(CW0\fR -and happily wraps around with enough iterations. -.Sp -This value can sometimes be useful as a generation counter of sorts (it -\&\*(L"ticks\*(R" the number of loop iterations), as it roughly corresponds with -\&\f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR calls \- and is incremented between the -prepare and check phases. -.IP "unsigned int ev_depth (loop)" 4 -.IX Item "unsigned int ev_depth (loop)" -Returns the number of times \f(CW\*(C`ev_run\*(C'\fR was entered minus the number of -times \f(CW\*(C`ev_run\*(C'\fR was exited normally, in other words, the recursion depth. -.Sp -Outside \f(CW\*(C`ev_run\*(C'\fR, this number is zero. In a callback, this number is -\&\f(CW1\fR, unless \f(CW\*(C`ev_run\*(C'\fR was invoked recursively (or from another thread), -in which case it is higher. -.Sp -Leaving \f(CW\*(C`ev_run\*(C'\fR abnormally (setjmp/longjmp, cancelling the thread, -throwing an exception etc.), doesn't count as \*(L"exit\*(R" \- consider this -as a hint to avoid such ungentleman-like behaviour unless it's really -convenient, in which case it is fully supported. -.IP "unsigned int ev_backend (loop)" 4 -.IX Item "unsigned int ev_backend (loop)" -Returns one of the \f(CW\*(C`EVBACKEND_*\*(C'\fR flags indicating the event backend in -use. -.IP "ev_tstamp ev_now (loop)" 4 -.IX Item "ev_tstamp ev_now (loop)" -Returns the current \*(L"event loop time\*(R", which is the time the event loop -received events and started processing them. This timestamp does not -change as long as callbacks are being processed, and this is also the base -time used for relative timers. You can treat it as the timestamp of the -event occurring (or more correctly, libev finding out about it). -.IP "ev_now_update (loop)" 4 -.IX Item "ev_now_update (loop)" -Establishes the current time by querying the kernel, updating the time -returned by \f(CW\*(C`ev_now ()\*(C'\fR in the progress. This is a costly operation and -is usually done automatically within \f(CW\*(C`ev_run ()\*(C'\fR. -.Sp -This function is rarely useful, but when some event callback runs for a -very long time without entering the event loop, updating libev's idea of -the current time is a good idea. -.Sp -See also \*(L"The special problem of time updates\*(R" in the \f(CW\*(C`ev_timer\*(C'\fR section. -.IP "ev_suspend (loop)" 4 -.IX Item "ev_suspend (loop)" -.PD 0 -.IP "ev_resume (loop)" 4 -.IX Item "ev_resume (loop)" -.PD -These two functions suspend and resume an event loop, for use when the -loop is not used for a while and timeouts should not be processed. -.Sp -A typical use case would be an interactive program such as a game: When -the user presses \f(CW\*(C`^Z\*(C'\fR to suspend the game and resumes it an hour later it -would be best to handle timeouts as if no time had actually passed while -the program was suspended. This can be achieved by calling \f(CW\*(C`ev_suspend\*(C'\fR -in your \f(CW\*(C`SIGTSTP\*(C'\fR handler, sending yourself a \f(CW\*(C`SIGSTOP\*(C'\fR and calling -\&\f(CW\*(C`ev_resume\*(C'\fR directly afterwards to resume timer processing. -.Sp -Effectively, all \f(CW\*(C`ev_timer\*(C'\fR watchers will be delayed by the time spend -between \f(CW\*(C`ev_suspend\*(C'\fR and \f(CW\*(C`ev_resume\*(C'\fR, and all \f(CW\*(C`ev_periodic\*(C'\fR watchers -will be rescheduled (that is, they will lose any events that would have -occurred while suspended). -.Sp -After calling \f(CW\*(C`ev_suspend\*(C'\fR you \fBmust not\fR call \fIany\fR function on the -given loop other than \f(CW\*(C`ev_resume\*(C'\fR, and you \fBmust not\fR call \f(CW\*(C`ev_resume\*(C'\fR -without a previous call to \f(CW\*(C`ev_suspend\*(C'\fR. -.Sp -Calling \f(CW\*(C`ev_suspend\*(C'\fR/\f(CW\*(C`ev_resume\*(C'\fR has the side effect of updating the -event loop time (see \f(CW\*(C`ev_now_update\*(C'\fR). -.IP "ev_run (loop, int flags)" 4 -.IX Item "ev_run (loop, int flags)" -Finally, this is it, the event handler. This function usually is called -after you have initialised all your watchers and you want to start -handling events. It will ask the operating system for any new events, call -the watcher callbacks, an then repeat the whole process indefinitely: This -is why event loops are called \fIloops\fR. -.Sp -If the flags argument is specified as \f(CW0\fR, it will keep handling events -until either no event watchers are active anymore or \f(CW\*(C`ev_break\*(C'\fR was -called. -.Sp -Please note that an explicit \f(CW\*(C`ev_break\*(C'\fR is usually better than -relying on all watchers to be stopped when deciding when a program has -finished (especially in interactive programs), but having a program -that automatically loops as long as it has to and no longer by virtue -of relying on its watchers stopping correctly, that is truly a thing of -beauty. -.Sp -This function is also \fImostly\fR exception-safe \- you can break out of -a \f(CW\*(C`ev_run\*(C'\fR call by calling \f(CW\*(C`longjmp\*(C'\fR in a callback, throwing a \*(C+ -exception and so on. This does not decrement the \f(CW\*(C`ev_depth\*(C'\fR value, nor -will it clear any outstanding \f(CW\*(C`EVBREAK_ONE\*(C'\fR breaks. -.Sp -A flags value of \f(CW\*(C`EVRUN_NOWAIT\*(C'\fR will look for new events, will handle -those events and any already outstanding ones, but will not wait and -block your process in case there are no events and will return after one -iteration of the loop. This is sometimes useful to poll and handle new -events while doing lengthy calculations, to keep the program responsive. -.Sp -A flags value of \f(CW\*(C`EVRUN_ONCE\*(C'\fR will look for new events (waiting if -necessary) and will handle those and any already outstanding ones. It -will block your process until at least one new event arrives (which could -be an event internal to libev itself, so there is no guarantee that a -user-registered callback will be called), and will return after one -iteration of the loop. -.Sp -This is useful if you are waiting for some external event in conjunction -with something not expressible using other libev watchers (i.e. "roll your -own \f(CW\*(C`ev_run\*(C'\fR"). However, a pair of \f(CW\*(C`ev_prepare\*(C'\fR/\f(CW\*(C`ev_check\*(C'\fR watchers is -usually a better approach for this kind of thing. -.Sp -Here are the gory details of what \f(CW\*(C`ev_run\*(C'\fR does: -.Sp -.Vb 10 -\& \- Increment loop depth. -\& \- Reset the ev_break status. -\& \- Before the first iteration, call any pending watchers. -\& LOOP: -\& \- If EVFLAG_FORKCHECK was used, check for a fork. -\& \- If a fork was detected (by any means), queue and call all fork watchers. -\& \- Queue and call all prepare watchers. -\& \- If ev_break was called, goto FINISH. -\& \- If we have been forked, detach and recreate the kernel state -\& as to not disturb the other process. -\& \- Update the kernel state with all outstanding changes. -\& \- Update the "event loop time" (ev_now ()). -\& \- Calculate for how long to sleep or block, if at all -\& (active idle watchers, EVRUN_NOWAIT or not having -\& any active watchers at all will result in not sleeping). -\& \- Sleep if the I/O and timer collect interval say so. -\& \- Increment loop iteration counter. -\& \- Block the process, waiting for any events. -\& \- Queue all outstanding I/O (fd) events. -\& \- Update the "event loop time" (ev_now ()), and do time jump adjustments. -\& \- Queue all expired timers. -\& \- Queue all expired periodics. -\& \- Queue all idle watchers with priority higher than that of pending events. -\& \- Queue all check watchers. -\& \- Call all queued watchers in reverse order (i.e. check watchers first). -\& Signals and child watchers are implemented as I/O watchers, and will -\& be handled here by queueing them when their watcher gets executed. -\& \- If ev_break has been called, or EVRUN_ONCE or EVRUN_NOWAIT -\& were used, or there are no active watchers, goto FINISH, otherwise -\& continue with step LOOP. -\& FINISH: -\& \- Reset the ev_break status iff it was EVBREAK_ONE. -\& \- Decrement the loop depth. -\& \- Return. -.Ve -.Sp -Example: Queue some jobs and then loop until no events are outstanding -anymore. -.Sp -.Vb 4 -\& ... queue jobs here, make sure they register event watchers as long -\& ... as they still have work to do (even an idle watcher will do..) -\& ev_run (my_loop, 0); -\& ... jobs done or somebody called break. yeah! -.Ve -.IP "ev_break (loop, how)" 4 -.IX Item "ev_break (loop, how)" -Can be used to make a call to \f(CW\*(C`ev_run\*(C'\fR return early (but only after it -has processed all outstanding events). The \f(CW\*(C`how\*(C'\fR argument must be either -\&\f(CW\*(C`EVBREAK_ONE\*(C'\fR, which will make the innermost \f(CW\*(C`ev_run\*(C'\fR call return, or -\&\f(CW\*(C`EVBREAK_ALL\*(C'\fR, which will make all nested \f(CW\*(C`ev_run\*(C'\fR calls return. -.Sp -This \*(L"break state\*(R" will be cleared on the next call to \f(CW\*(C`ev_run\*(C'\fR. -.Sp -It is safe to call \f(CW\*(C`ev_break\*(C'\fR from outside any \f(CW\*(C`ev_run\*(C'\fR calls, too, in -which case it will have no effect. -.IP "ev_ref (loop)" 4 -.IX Item "ev_ref (loop)" -.PD 0 -.IP "ev_unref (loop)" 4 -.IX Item "ev_unref (loop)" -.PD -Ref/unref can be used to add or remove a reference count on the event -loop: Every watcher keeps one reference, and as long as the reference -count is nonzero, \f(CW\*(C`ev_run\*(C'\fR will not return on its own. -.Sp -This is useful when you have a watcher that you never intend to -unregister, but that nevertheless should not keep \f(CW\*(C`ev_run\*(C'\fR from -returning. In such a case, call \f(CW\*(C`ev_unref\*(C'\fR after starting, and \f(CW\*(C`ev_ref\*(C'\fR -before stopping it. -.Sp -As an example, libev itself uses this for its internal signal pipe: It -is not visible to the libev user and should not keep \f(CW\*(C`ev_run\*(C'\fR from -exiting if no event watchers registered by it are active. It is also an -excellent way to do this for generic recurring timers or from within -third-party libraries. Just remember to \fIunref after start\fR and \fIref -before stop\fR (but only if the watcher wasn't active before, or was active -before, respectively. Note also that libev might stop watchers itself -(e.g. non-repeating timers) in which case you have to \f(CW\*(C`ev_ref\*(C'\fR -in the callback). -.Sp -Example: Create a signal watcher, but keep it from keeping \f(CW\*(C`ev_run\*(C'\fR -running when nothing else is active. -.Sp -.Vb 4 -\& ev_signal exitsig; -\& ev_signal_init (&exitsig, sig_cb, SIGINT); -\& ev_signal_start (loop, &exitsig); -\& ev_unref (loop); -.Ve -.Sp -Example: For some weird reason, unregister the above signal handler again. -.Sp -.Vb 2 -\& ev_ref (loop); -\& ev_signal_stop (loop, &exitsig); -.Ve -.IP "ev_set_io_collect_interval (loop, ev_tstamp interval)" 4 -.IX Item "ev_set_io_collect_interval (loop, ev_tstamp interval)" -.PD 0 -.IP "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" 4 -.IX Item "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" -.PD -These advanced functions influence the time that libev will spend waiting -for events. Both time intervals are by default \f(CW0\fR, meaning that libev -will try to invoke timer/periodic callbacks and I/O callbacks with minimum -latency. -.Sp -Setting these to a higher value (the \f(CW\*(C`interval\*(C'\fR \fImust\fR be >= \f(CW0\fR) -allows libev to delay invocation of I/O and timer/periodic callbacks -to increase efficiency of loop iterations (or to increase power-saving -opportunities). -.Sp -The idea is that sometimes your program runs just fast enough to handle -one (or very few) event(s) per loop iteration. While this makes the -program responsive, it also wastes a lot of \s-1CPU\s0 time to poll for new -events, especially with backends like \f(CW\*(C`select ()\*(C'\fR which have a high -overhead for the actual polling but can deliver many events at once. -.Sp -By setting a higher \fIio collect interval\fR you allow libev to spend more -time collecting I/O events, so you can handle more events per iteration, -at the cost of increasing latency. Timeouts (both \f(CW\*(C`ev_periodic\*(C'\fR and -\&\f(CW\*(C`ev_timer\*(C'\fR) will be not affected. Setting this to a non-null value will -introduce an additional \f(CW\*(C`ev_sleep ()\*(C'\fR call into most loop iterations. The -sleep time ensures that libev will not poll for I/O events more often then -once per this interval, on average. -.Sp -Likewise, by setting a higher \fItimeout collect interval\fR you allow libev -to spend more time collecting timeouts, at the expense of increased -latency/jitter/inexactness (the watcher callback will be called -later). \f(CW\*(C`ev_io\*(C'\fR watchers will not be affected. Setting this to a non-null -value will not introduce any overhead in libev. -.Sp -Many (busy) programs can usually benefit by setting the I/O collect -interval to a value near \f(CW0.1\fR or so, which is often enough for -interactive servers (of course not for games), likewise for timeouts. It -usually doesn't make much sense to set it to a lower value than \f(CW0.01\fR, -as this approaches the timing granularity of most systems. Note that if -you do transactions with the outside world and you can't increase the -parallelity, then this setting will limit your transaction rate (if you -need to poll once per transaction and the I/O collect interval is 0.01, -then you can't do more than 100 transactions per second). -.Sp -Setting the \fItimeout collect interval\fR can improve the opportunity for -saving power, as the program will \*(L"bundle\*(R" timer callback invocations that -are \*(L"near\*(R" in time together, by delaying some, thus reducing the number of -times the process sleeps and wakes up again. Another useful technique to -reduce iterations/wake\-ups is to use \f(CW\*(C`ev_periodic\*(C'\fR watchers and make sure -they fire on, say, one-second boundaries only. -.Sp -Example: we only need 0.1s timeout granularity, and we wish not to poll -more often than 100 times per second: -.Sp -.Vb 2 -\& ev_set_timeout_collect_interval (EV_DEFAULT_UC_ 0.1); -\& ev_set_io_collect_interval (EV_DEFAULT_UC_ 0.01); -.Ve -.IP "ev_invoke_pending (loop)" 4 -.IX Item "ev_invoke_pending (loop)" -This call will simply invoke all pending watchers while resetting their -pending state. Normally, \f(CW\*(C`ev_run\*(C'\fR does this automatically when required, -but when overriding the invoke callback this call comes handy. This -function can be invoked from a watcher \- this can be useful for example -when you want to do some lengthy calculation and want to pass further -event handling to another thread (you still have to make sure only one -thread executes within \f(CW\*(C`ev_invoke_pending\*(C'\fR or \f(CW\*(C`ev_run\*(C'\fR of course). -.IP "int ev_pending_count (loop)" 4 -.IX Item "int ev_pending_count (loop)" -Returns the number of pending watchers \- zero indicates that no watchers -are pending. -.IP "ev_set_invoke_pending_cb (loop, void (*invoke_pending_cb)(\s-1EV_P\s0))" 4 -.IX Item "ev_set_invoke_pending_cb (loop, void (*invoke_pending_cb)(EV_P))" -This overrides the invoke pending functionality of the loop: Instead of -invoking all pending watchers when there are any, \f(CW\*(C`ev_run\*(C'\fR will call -this callback instead. This is useful, for example, when you want to -invoke the actual watchers inside another context (another thread etc.). -.Sp -If you want to reset the callback, use \f(CW\*(C`ev_invoke_pending\*(C'\fR as new -callback. -.IP "ev_set_loop_release_cb (loop, void (*release)(\s-1EV_P\s0), void (*acquire)(\s-1EV_P\s0))" 4 -.IX Item "ev_set_loop_release_cb (loop, void (*release)(EV_P), void (*acquire)(EV_P))" -Sometimes you want to share the same loop between multiple threads. This -can be done relatively simply by putting mutex_lock/unlock calls around -each call to a libev function. -.Sp -However, \f(CW\*(C`ev_run\*(C'\fR can run an indefinite time, so it is not feasible -to wait for it to return. One way around this is to wake up the event -loop via \f(CW\*(C`ev_break\*(C'\fR and \f(CW\*(C`av_async_send\*(C'\fR, another way is to set these -\&\fIrelease\fR and \fIacquire\fR callbacks on the loop. -.Sp -When set, then \f(CW\*(C`release\*(C'\fR will be called just before the thread is -suspended waiting for new events, and \f(CW\*(C`acquire\*(C'\fR is called just -afterwards. -.Sp -Ideally, \f(CW\*(C`release\*(C'\fR will just call your mutex_unlock function, and -\&\f(CW\*(C`acquire\*(C'\fR will just call the mutex_lock function again. -.Sp -While event loop modifications are allowed between invocations of -\&\f(CW\*(C`release\*(C'\fR and \f(CW\*(C`acquire\*(C'\fR (that's their only purpose after all), no -modifications done will affect the event loop, i.e. adding watchers will -have no effect on the set of file descriptors being watched, or the time -waited. Use an \f(CW\*(C`ev_async\*(C'\fR watcher to wake up \f(CW\*(C`ev_run\*(C'\fR when you want it -to take note of any changes you made. -.Sp -In theory, threads executing \f(CW\*(C`ev_run\*(C'\fR will be async-cancel safe between -invocations of \f(CW\*(C`release\*(C'\fR and \f(CW\*(C`acquire\*(C'\fR. -.Sp -See also the locking example in the \f(CW\*(C`THREADS\*(C'\fR section later in this -document. -.IP "ev_set_userdata (loop, void *data)" 4 -.IX Item "ev_set_userdata (loop, void *data)" -.PD 0 -.IP "void *ev_userdata (loop)" 4 -.IX Item "void *ev_userdata (loop)" -.PD -Set and retrieve a single \f(CW\*(C`void *\*(C'\fR associated with a loop. When -\&\f(CW\*(C`ev_set_userdata\*(C'\fR has never been called, then \f(CW\*(C`ev_userdata\*(C'\fR returns -\&\f(CW0\fR. -.Sp -These two functions can be used to associate arbitrary data with a loop, -and are intended solely for the \f(CW\*(C`invoke_pending_cb\*(C'\fR, \f(CW\*(C`release\*(C'\fR and -\&\f(CW\*(C`acquire\*(C'\fR callbacks described above, but of course can be (ab\-)used for -any other purpose as well. -.IP "ev_verify (loop)" 4 -.IX Item "ev_verify (loop)" -This function only does something when \f(CW\*(C`EV_VERIFY\*(C'\fR support has been -compiled in, which is the default for non-minimal builds. It tries to go -through all internal structures and checks them for validity. If anything -is found to be inconsistent, it will print an error message to standard -error and call \f(CW\*(C`abort ()\*(C'\fR. -.Sp -This can be used to catch bugs inside libev itself: under normal -circumstances, this function will never abort as of course libev keeps its -data structures consistent. -.SH "ANATOMY OF A WATCHER" -.IX Header "ANATOMY OF A WATCHER" -In the following description, uppercase \f(CW\*(C`TYPE\*(C'\fR in names stands for the -watcher type, e.g. \f(CW\*(C`ev_TYPE_start\*(C'\fR can mean \f(CW\*(C`ev_timer_start\*(C'\fR for timer -watchers and \f(CW\*(C`ev_io_start\*(C'\fR for I/O watchers. -.PP -A watcher is an opaque structure that you allocate and register to record -your interest in some event. To make a concrete example, imagine you want -to wait for \s-1STDIN\s0 to become readable, you would create an \f(CW\*(C`ev_io\*(C'\fR watcher -for that: -.PP -.Vb 5 -\& static void my_cb (struct ev_loop *loop, ev_io *w, int revents) -\& { -\& ev_io_stop (w); -\& ev_break (loop, EVBREAK_ALL); -\& } -\& -\& struct ev_loop *loop = ev_default_loop (0); -\& -\& ev_io stdin_watcher; -\& -\& ev_init (&stdin_watcher, my_cb); -\& ev_io_set (&stdin_watcher, STDIN_FILENO, EV_READ); -\& ev_io_start (loop, &stdin_watcher); -\& -\& ev_run (loop, 0); -.Ve -.PP -As you can see, you are responsible for allocating the memory for your -watcher structures (and it is \fIusually\fR a bad idea to do this on the -stack). -.PP -Each watcher has an associated watcher structure (called \f(CW\*(C`struct ev_TYPE\*(C'\fR -or simply \f(CW\*(C`ev_TYPE\*(C'\fR, as typedefs are provided for all watcher structs). -.PP -Each watcher structure must be initialised by a call to \f(CW\*(C`ev_init (watcher -*, callback)\*(C'\fR, which expects a callback to be provided. This callback is -invoked each time the event occurs (or, in the case of I/O watchers, each -time the event loop detects that the file descriptor given is readable -and/or writable). -.PP -Each watcher type further has its own \f(CW\*(C`ev_TYPE_set (watcher *, ...)\*(C'\fR -macro to configure it, with arguments specific to the watcher type. There -is also a macro to combine initialisation and setting in one call: \f(CW\*(C`ev_TYPE_init (watcher *, callback, ...)\*(C'\fR. -.PP -To make the watcher actually watch out for events, you have to start it -with a watcher-specific start function (\f(CW\*(C`ev_TYPE_start (loop, watcher -*)\*(C'\fR), and you can stop watching for events at any time by calling the -corresponding stop function (\f(CW\*(C`ev_TYPE_stop (loop, watcher *)\*(C'\fR. -.PP -As long as your watcher is active (has been started but not stopped) you -must not touch the values stored in it. Most specifically you must never -reinitialise it or call its \f(CW\*(C`ev_TYPE_set\*(C'\fR macro. -.PP -Each and every callback receives the event loop pointer as first, the -registered watcher structure as second, and a bitset of received events as -third argument. -.PP -The received events usually include a single bit per event type received -(you can receive multiple events at the same time). The possible bit masks -are: -.ie n .IP """EV_READ""" 4 -.el .IP "\f(CWEV_READ\fR" 4 -.IX Item "EV_READ" -.PD 0 -.ie n .IP """EV_WRITE""" 4 -.el .IP "\f(CWEV_WRITE\fR" 4 -.IX Item "EV_WRITE" -.PD -The file descriptor in the \f(CW\*(C`ev_io\*(C'\fR watcher has become readable and/or -writable. -.ie n .IP """EV_TIMER""" 4 -.el .IP "\f(CWEV_TIMER\fR" 4 -.IX Item "EV_TIMER" -The \f(CW\*(C`ev_timer\*(C'\fR watcher has timed out. -.ie n .IP """EV_PERIODIC""" 4 -.el .IP "\f(CWEV_PERIODIC\fR" 4 -.IX Item "EV_PERIODIC" -The \f(CW\*(C`ev_periodic\*(C'\fR watcher has timed out. -.ie n .IP """EV_SIGNAL""" 4 -.el .IP "\f(CWEV_SIGNAL\fR" 4 -.IX Item "EV_SIGNAL" -The signal specified in the \f(CW\*(C`ev_signal\*(C'\fR watcher has been received by a thread. -.ie n .IP """EV_CHILD""" 4 -.el .IP "\f(CWEV_CHILD\fR" 4 -.IX Item "EV_CHILD" -The pid specified in the \f(CW\*(C`ev_child\*(C'\fR watcher has received a status change. -.ie n .IP """EV_STAT""" 4 -.el .IP "\f(CWEV_STAT\fR" 4 -.IX Item "EV_STAT" -The path specified in the \f(CW\*(C`ev_stat\*(C'\fR watcher changed its attributes somehow. -.ie n .IP """EV_IDLE""" 4 -.el .IP "\f(CWEV_IDLE\fR" 4 -.IX Item "EV_IDLE" -The \f(CW\*(C`ev_idle\*(C'\fR watcher has determined that you have nothing better to do. -.ie n .IP """EV_PREPARE""" 4 -.el .IP "\f(CWEV_PREPARE\fR" 4 -.IX Item "EV_PREPARE" -.PD 0 -.ie n .IP """EV_CHECK""" 4 -.el .IP "\f(CWEV_CHECK\fR" 4 -.IX Item "EV_CHECK" -.PD -All \f(CW\*(C`ev_prepare\*(C'\fR watchers are invoked just \fIbefore\fR \f(CW\*(C`ev_run\*(C'\fR starts -to gather new events, and all \f(CW\*(C`ev_check\*(C'\fR watchers are invoked just after -\&\f(CW\*(C`ev_run\*(C'\fR has gathered them, but before it invokes any callbacks for any -received events. Callbacks of both watcher types can start and stop as -many watchers as they want, and all of them will be taken into account -(for example, a \f(CW\*(C`ev_prepare\*(C'\fR watcher might start an idle watcher to keep -\&\f(CW\*(C`ev_run\*(C'\fR from blocking). -.ie n .IP """EV_EMBED""" 4 -.el .IP "\f(CWEV_EMBED\fR" 4 -.IX Item "EV_EMBED" -The embedded event loop specified in the \f(CW\*(C`ev_embed\*(C'\fR watcher needs attention. -.ie n .IP """EV_FORK""" 4 -.el .IP "\f(CWEV_FORK\fR" 4 -.IX Item "EV_FORK" -The event loop has been resumed in the child process after fork (see -\&\f(CW\*(C`ev_fork\*(C'\fR). -.ie n .IP """EV_CLEANUP""" 4 -.el .IP "\f(CWEV_CLEANUP\fR" 4 -.IX Item "EV_CLEANUP" -The event loop is about to be destroyed (see \f(CW\*(C`ev_cleanup\*(C'\fR). -.ie n .IP """EV_ASYNC""" 4 -.el .IP "\f(CWEV_ASYNC\fR" 4 -.IX Item "EV_ASYNC" -The given async watcher has been asynchronously notified (see \f(CW\*(C`ev_async\*(C'\fR). -.ie n .IP """EV_CUSTOM""" 4 -.el .IP "\f(CWEV_CUSTOM\fR" 4 -.IX Item "EV_CUSTOM" -Not ever sent (or otherwise used) by libev itself, but can be freely used -by libev users to signal watchers (e.g. via \f(CW\*(C`ev_feed_event\*(C'\fR). -.ie n .IP """EV_ERROR""" 4 -.el .IP "\f(CWEV_ERROR\fR" 4 -.IX Item "EV_ERROR" -An unspecified error has occurred, the watcher has been stopped. This might -happen because the watcher could not be properly started because libev -ran out of memory, a file descriptor was found to be closed or any other -problem. Libev considers these application bugs. -.Sp -You best act on it by reporting the problem and somehow coping with the -watcher being stopped. Note that well-written programs should not receive -an error ever, so when your watcher receives it, this usually indicates a -bug in your program. -.Sp -Libev will usually signal a few \*(L"dummy\*(R" events together with an error, for -example it might indicate that a fd is readable or writable, and if your -callbacks is well-written it can just attempt the operation and cope with -the error from \fIread()\fR or \fIwrite()\fR. This will not work in multi-threaded -programs, though, as the fd could already be closed and reused for another -thing, so beware. -.SS "\s-1GENERIC\s0 \s-1WATCHER\s0 \s-1FUNCTIONS\s0" -.IX Subsection "GENERIC WATCHER FUNCTIONS" -.ie n .IP """ev_init"" (ev_TYPE *watcher, callback)" 4 -.el .IP "\f(CWev_init\fR (ev_TYPE *watcher, callback)" 4 -.IX Item "ev_init (ev_TYPE *watcher, callback)" -This macro initialises the generic portion of a watcher. The contents -of the watcher object can be arbitrary (so \f(CW\*(C`malloc\*(C'\fR will do). Only -the generic parts of the watcher are initialised, you \fIneed\fR to call -the type-specific \f(CW\*(C`ev_TYPE_set\*(C'\fR macro afterwards to initialise the -type-specific parts. For each type there is also a \f(CW\*(C`ev_TYPE_init\*(C'\fR macro -which rolls both calls into one. -.Sp -You can reinitialise a watcher at any time as long as it has been stopped -(or never started) and there are no pending events outstanding. -.Sp -The callback is always of type \f(CW\*(C`void (*)(struct ev_loop *loop, ev_TYPE *watcher, -int revents)\*(C'\fR. -.Sp -Example: Initialise an \f(CW\*(C`ev_io\*(C'\fR watcher in two steps. -.Sp -.Vb 3 -\& ev_io w; -\& ev_init (&w, my_cb); -\& ev_io_set (&w, STDIN_FILENO, EV_READ); -.Ve -.ie n .IP """ev_TYPE_set"" (ev_TYPE *watcher, [args])" 4 -.el .IP "\f(CWev_TYPE_set\fR (ev_TYPE *watcher, [args])" 4 -.IX Item "ev_TYPE_set (ev_TYPE *watcher, [args])" -This macro initialises the type-specific parts of a watcher. You need to -call \f(CW\*(C`ev_init\*(C'\fR at least once before you call this macro, but you can -call \f(CW\*(C`ev_TYPE_set\*(C'\fR any number of times. You must not, however, call this -macro on a watcher that is active (it can be pending, however, which is a -difference to the \f(CW\*(C`ev_init\*(C'\fR macro). -.Sp -Although some watcher types do not have type-specific arguments -(e.g. \f(CW\*(C`ev_prepare\*(C'\fR) you still need to call its \f(CW\*(C`set\*(C'\fR macro. -.Sp -See \f(CW\*(C`ev_init\*(C'\fR, above, for an example. -.ie n .IP """ev_TYPE_init"" (ev_TYPE *watcher, callback, [args])" 4 -.el .IP "\f(CWev_TYPE_init\fR (ev_TYPE *watcher, callback, [args])" 4 -.IX Item "ev_TYPE_init (ev_TYPE *watcher, callback, [args])" -This convenience macro rolls both \f(CW\*(C`ev_init\*(C'\fR and \f(CW\*(C`ev_TYPE_set\*(C'\fR macro -calls into a single call. This is the most convenient method to initialise -a watcher. The same limitations apply, of course. -.Sp -Example: Initialise and set an \f(CW\*(C`ev_io\*(C'\fR watcher in one step. -.Sp -.Vb 1 -\& ev_io_init (&w, my_cb, STDIN_FILENO, EV_READ); -.Ve -.ie n .IP """ev_TYPE_start"" (loop, ev_TYPE *watcher)" 4 -.el .IP "\f(CWev_TYPE_start\fR (loop, ev_TYPE *watcher)" 4 -.IX Item "ev_TYPE_start (loop, ev_TYPE *watcher)" -Starts (activates) the given watcher. Only active watchers will receive -events. If the watcher is already active nothing will happen. -.Sp -Example: Start the \f(CW\*(C`ev_io\*(C'\fR watcher that is being abused as example in this -whole section. -.Sp -.Vb 1 -\& ev_io_start (EV_DEFAULT_UC, &w); -.Ve -.ie n .IP """ev_TYPE_stop"" (loop, ev_TYPE *watcher)" 4 -.el .IP "\f(CWev_TYPE_stop\fR (loop, ev_TYPE *watcher)" 4 -.IX Item "ev_TYPE_stop (loop, ev_TYPE *watcher)" -Stops the given watcher if active, and clears the pending status (whether -the watcher was active or not). -.Sp -It is possible that stopped watchers are pending \- for example, -non-repeating timers are being stopped when they become pending \- but -calling \f(CW\*(C`ev_TYPE_stop\*(C'\fR ensures that the watcher is neither active nor -pending. If you want to free or reuse the memory used by the watcher it is -therefore a good idea to always call its \f(CW\*(C`ev_TYPE_stop\*(C'\fR function. -.IP "bool ev_is_active (ev_TYPE *watcher)" 4 -.IX Item "bool ev_is_active (ev_TYPE *watcher)" -Returns a true value iff the watcher is active (i.e. it has been started -and not yet been stopped). As long as a watcher is active you must not modify -it. -.IP "bool ev_is_pending (ev_TYPE *watcher)" 4 -.IX Item "bool ev_is_pending (ev_TYPE *watcher)" -Returns a true value iff the watcher is pending, (i.e. it has outstanding -events but its callback has not yet been invoked). As long as a watcher -is pending (but not active) you must not call an init function on it (but -\&\f(CW\*(C`ev_TYPE_set\*(C'\fR is safe), you must not change its priority, and you must -make sure the watcher is available to libev (e.g. you cannot \f(CW\*(C`free ()\*(C'\fR -it). -.IP "callback ev_cb (ev_TYPE *watcher)" 4 -.IX Item "callback ev_cb (ev_TYPE *watcher)" -Returns the callback currently set on the watcher. -.IP "ev_cb_set (ev_TYPE *watcher, callback)" 4 -.IX Item "ev_cb_set (ev_TYPE *watcher, callback)" -Change the callback. You can change the callback at virtually any time -(modulo threads). -.IP "ev_set_priority (ev_TYPE *watcher, int priority)" 4 -.IX Item "ev_set_priority (ev_TYPE *watcher, int priority)" -.PD 0 -.IP "int ev_priority (ev_TYPE *watcher)" 4 -.IX Item "int ev_priority (ev_TYPE *watcher)" -.PD -Set and query the priority of the watcher. The priority is a small -integer between \f(CW\*(C`EV_MAXPRI\*(C'\fR (default: \f(CW2\fR) and \f(CW\*(C`EV_MINPRI\*(C'\fR -(default: \f(CW\*(C`\-2\*(C'\fR). Pending watchers with higher priority will be invoked -before watchers with lower priority, but priority will not keep watchers -from being executed (except for \f(CW\*(C`ev_idle\*(C'\fR watchers). -.Sp -If you need to suppress invocation when higher priority events are pending -you need to look at \f(CW\*(C`ev_idle\*(C'\fR watchers, which provide this functionality. -.Sp -You \fImust not\fR change the priority of a watcher as long as it is active or -pending. -.Sp -Setting a priority outside the range of \f(CW\*(C`EV_MINPRI\*(C'\fR to \f(CW\*(C`EV_MAXPRI\*(C'\fR is -fine, as long as you do not mind that the priority value you query might -or might not have been clamped to the valid range. -.Sp -The default priority used by watchers when no priority has been set is -always \f(CW0\fR, which is supposed to not be too high and not be too low :). -.Sp -See \*(L"\s-1WATCHER\s0 \s-1PRIORITY\s0 \s-1MODELS\s0\*(R", below, for a more thorough treatment of -priorities. -.IP "ev_invoke (loop, ev_TYPE *watcher, int revents)" 4 -.IX Item "ev_invoke (loop, ev_TYPE *watcher, int revents)" -Invoke the \f(CW\*(C`watcher\*(C'\fR with the given \f(CW\*(C`loop\*(C'\fR and \f(CW\*(C`revents\*(C'\fR. Neither -\&\f(CW\*(C`loop\*(C'\fR nor \f(CW\*(C`revents\*(C'\fR need to be valid as long as the watcher callback -can deal with that fact, as both are simply passed through to the -callback. -.IP "int ev_clear_pending (loop, ev_TYPE *watcher)" 4 -.IX Item "int ev_clear_pending (loop, ev_TYPE *watcher)" -If the watcher is pending, this function clears its pending status and -returns its \f(CW\*(C`revents\*(C'\fR bitset (as if its callback was invoked). If the -watcher isn't pending it does nothing and returns \f(CW0\fR. -.Sp -Sometimes it can be useful to \*(L"poll\*(R" a watcher instead of waiting for its -callback to be invoked, which can be accomplished with this function. -.IP "ev_feed_event (loop, ev_TYPE *watcher, int revents)" 4 -.IX Item "ev_feed_event (loop, ev_TYPE *watcher, int revents)" -Feeds the given event set into the event loop, as if the specified event -had happened for the specified watcher (which must be a pointer to an -initialised but not necessarily started event watcher). Obviously you must -not free the watcher as long as it has pending events. -.Sp -Stopping the watcher, letting libev invoke it, or calling -\&\f(CW\*(C`ev_clear_pending\*(C'\fR will clear the pending event, even if the watcher was -not started in the first place. -.Sp -See also \f(CW\*(C`ev_feed_fd_event\*(C'\fR and \f(CW\*(C`ev_feed_signal_event\*(C'\fR for related -functions that do not need a watcher. -.PP -See also the \*(L"\s-1ASSOCIATING\s0 \s-1CUSTOM\s0 \s-1DATA\s0 \s-1WITH\s0 A \s-1WATCHER\s0\*(R" and \*(L"\s-1BUILDING\s0 \s-1YOUR\s0 -\&\s-1OWN\s0 \s-1COMPOSITE\s0 \s-1WATCHERS\s0\*(R" idioms. -.SS "\s-1WATCHER\s0 \s-1STATES\s0" -.IX Subsection "WATCHER STATES" -There are various watcher states mentioned throughout this manual \- -active, pending and so on. In this section these states and the rules to -transition between them will be described in more detail \- and while these -rules might look complicated, they usually do \*(L"the right thing\*(R". -.IP "initialiased" 4 -.IX Item "initialiased" -Before a watcher can be registered with the event looop it has to be -initialised. This can be done with a call to \f(CW\*(C`ev_TYPE_init\*(C'\fR, or calls to -\&\f(CW\*(C`ev_init\*(C'\fR followed by the watcher-specific \f(CW\*(C`ev_TYPE_set\*(C'\fR function. -.Sp -In this state it is simply some block of memory that is suitable for -use in an event loop. It can be moved around, freed, reused etc. at -will \- as long as you either keep the memory contents intact, or call -\&\f(CW\*(C`ev_TYPE_init\*(C'\fR again. -.IP "started/running/active" 4 -.IX Item "started/running/active" -Once a watcher has been started with a call to \f(CW\*(C`ev_TYPE_start\*(C'\fR it becomes -property of the event loop, and is actively waiting for events. While in -this state it cannot be accessed (except in a few documented ways), moved, -freed or anything else \- the only legal thing is to keep a pointer to it, -and call libev functions on it that are documented to work on active watchers. -.IP "pending" 4 -.IX Item "pending" -If a watcher is active and libev determines that an event it is interested -in has occurred (such as a timer expiring), it will become pending. It will -stay in this pending state until either it is stopped or its callback is -about to be invoked, so it is not normally pending inside the watcher -callback. -.Sp -The watcher might or might not be active while it is pending (for example, -an expired non-repeating timer can be pending but no longer active). If it -is stopped, it can be freely accessed (e.g. by calling \f(CW\*(C`ev_TYPE_set\*(C'\fR), -but it is still property of the event loop at this time, so cannot be -moved, freed or reused. And if it is active the rules described in the -previous item still apply. -.Sp -It is also possible to feed an event on a watcher that is not active (e.g. -via \f(CW\*(C`ev_feed_event\*(C'\fR), in which case it becomes pending without being -active. -.IP "stopped" 4 -.IX Item "stopped" -A watcher can be stopped implicitly by libev (in which case it might still -be pending), or explicitly by calling its \f(CW\*(C`ev_TYPE_stop\*(C'\fR function. The -latter will clear any pending state the watcher might be in, regardless -of whether it was active or not, so stopping a watcher explicitly before -freeing it is often a good idea. -.Sp -While stopped (and not pending) the watcher is essentially in the -initialised state, that is, it can be reused, moved, modified in any way -you wish (but when you trash the memory block, you need to \f(CW\*(C`ev_TYPE_init\*(C'\fR -it again). -.SS "\s-1WATCHER\s0 \s-1PRIORITY\s0 \s-1MODELS\s0" -.IX Subsection "WATCHER PRIORITY MODELS" -Many event loops support \fIwatcher priorities\fR, which are usually small -integers that influence the ordering of event callback invocation -between watchers in some way, all else being equal. -.PP -In libev, Watcher priorities can be set using \f(CW\*(C`ev_set_priority\*(C'\fR. See its -description for the more technical details such as the actual priority -range. -.PP -There are two common ways how these these priorities are being interpreted -by event loops: -.PP -In the more common lock-out model, higher priorities \*(L"lock out\*(R" invocation -of lower priority watchers, which means as long as higher priority -watchers receive events, lower priority watchers are not being invoked. -.PP -The less common only-for-ordering model uses priorities solely to order -callback invocation within a single event loop iteration: Higher priority -watchers are invoked before lower priority ones, but they all get invoked -before polling for new events. -.PP -Libev uses the second (only-for-ordering) model for all its watchers -except for idle watchers (which use the lock-out model). -.PP -The rationale behind this is that implementing the lock-out model for -watchers is not well supported by most kernel interfaces, and most event -libraries will just poll for the same events again and again as long as -their callbacks have not been executed, which is very inefficient in the -common case of one high-priority watcher locking out a mass of lower -priority ones. -.PP -Static (ordering) priorities are most useful when you have two or more -watchers handling the same resource: a typical usage example is having an -\&\f(CW\*(C`ev_io\*(C'\fR watcher to receive data, and an associated \f(CW\*(C`ev_timer\*(C'\fR to handle -timeouts. Under load, data might be received while the program handles -other jobs, but since timers normally get invoked first, the timeout -handler will be executed before checking for data. In that case, giving -the timer a lower priority than the I/O watcher ensures that I/O will be -handled first even under adverse conditions (which is usually, but not -always, what you want). -.PP -Since idle watchers use the \*(L"lock-out\*(R" model, meaning that idle watchers -will only be executed when no same or higher priority watchers have -received events, they can be used to implement the \*(L"lock-out\*(R" model when -required. -.PP -For example, to emulate how many other event libraries handle priorities, -you can associate an \f(CW\*(C`ev_idle\*(C'\fR watcher to each such watcher, and in -the normal watcher callback, you just start the idle watcher. The real -processing is done in the idle watcher callback. This causes libev to -continuously poll and process kernel event data for the watcher, but when -the lock-out case is known to be rare (which in turn is rare :), this is -workable. -.PP -Usually, however, the lock-out model implemented that way will perform -miserably under the type of load it was designed to handle. In that case, -it might be preferable to stop the real watcher before starting the -idle watcher, so the kernel will not have to process the event in case -the actual processing will be delayed for considerable time. -.PP -Here is an example of an I/O watcher that should run at a strictly lower -priority than the default, and which should only process data when no -other events are pending: -.PP -.Vb 2 -\& ev_idle idle; // actual processing watcher -\& ev_io io; // actual event watcher -\& -\& static void -\& io_cb (EV_P_ ev_io *w, int revents) -\& { -\& // stop the I/O watcher, we received the event, but -\& // are not yet ready to handle it. -\& ev_io_stop (EV_A_ w); -\& -\& // start the idle watcher to handle the actual event. -\& // it will not be executed as long as other watchers -\& // with the default priority are receiving events. -\& ev_idle_start (EV_A_ &idle); -\& } -\& -\& static void -\& idle_cb (EV_P_ ev_idle *w, int revents) -\& { -\& // actual processing -\& read (STDIN_FILENO, ...); -\& -\& // have to start the I/O watcher again, as -\& // we have handled the event -\& ev_io_start (EV_P_ &io); -\& } -\& -\& // initialisation -\& ev_idle_init (&idle, idle_cb); -\& ev_io_init (&io, io_cb, STDIN_FILENO, EV_READ); -\& ev_io_start (EV_DEFAULT_ &io); -.Ve -.PP -In the \*(L"real\*(R" world, it might also be beneficial to start a timer, so that -low-priority connections can not be locked out forever under load. This -enables your program to keep a lower latency for important connections -during short periods of high load, while not completely locking out less -important ones. -.SH "WATCHER TYPES" -.IX Header "WATCHER TYPES" -This section describes each watcher in detail, but will not repeat -information given in the last section. Any initialisation/set macros, -functions and members specific to the watcher type are explained. -.PP -Members are additionally marked with either \fI[read\-only]\fR, meaning that, -while the watcher is active, you can look at the member and expect some -sensible content, but you must not modify it (you can modify it while the -watcher is stopped to your hearts content), or \fI[read\-write]\fR, which -means you can expect it to have some sensible content while the watcher -is active, but you can also modify it. Modifying it may not do something -sensible or take immediate effect (or do anything at all), but libev will -not crash or malfunction in any way. -.ie n .SS """ev_io"" \- is this file descriptor readable or writable?" -.el .SS "\f(CWev_io\fP \- is this file descriptor readable or writable?" -.IX Subsection "ev_io - is this file descriptor readable or writable?" -I/O watchers check whether a file descriptor is readable or writable -in each iteration of the event loop, or, more precisely, when reading -would not block the process and writing would at least be able to write -some data. This behaviour is called level-triggering because you keep -receiving events as long as the condition persists. Remember you can stop -the watcher if you don't want to act on the event and neither want to -receive future events. -.PP -In general you can register as many read and/or write event watchers per -fd as you want (as long as you don't confuse yourself). Setting all file -descriptors to non-blocking mode is also usually a good idea (but not -required if you know what you are doing). -.PP -Another thing you have to watch out for is that it is quite easy to -receive \*(L"spurious\*(R" readiness notifications, that is, your callback might -be called with \f(CW\*(C`EV_READ\*(C'\fR but a subsequent \f(CW\*(C`read\*(C'\fR(2) will actually block -because there is no data. It is very easy to get into this situation even -with a relatively standard program structure. Thus it is best to always -use non-blocking I/O: An extra \f(CW\*(C`read\*(C'\fR(2) returning \f(CW\*(C`EAGAIN\*(C'\fR is far -preferable to a program hanging until some data arrives. -.PP -If you cannot run the fd in non-blocking mode (for example you should -not play around with an Xlib connection), then you have to separately -re-test whether a file descriptor is really ready with a known-to-be good -interface such as poll (fortunately in the case of Xlib, it already does -this on its own, so its quite safe to use). Some people additionally -use \f(CW\*(C`SIGALRM\*(C'\fR and an interval timer, just to be sure you won't block -indefinitely. -.PP -But really, best use non-blocking mode. -.PP -\fIThe special problem of disappearing file descriptors\fR -.IX Subsection "The special problem of disappearing file descriptors" -.PP -Some backends (e.g. kqueue, epoll) need to be told about closing a file -descriptor (either due to calling \f(CW\*(C`close\*(C'\fR explicitly or any other means, -such as \f(CW\*(C`dup2\*(C'\fR). The reason is that you register interest in some file -descriptor, but when it goes away, the operating system will silently drop -this interest. If another file descriptor with the same number then is -registered with libev, there is no efficient way to see that this is, in -fact, a different file descriptor. -.PP -To avoid having to explicitly tell libev about such cases, libev follows -the following policy: Each time \f(CW\*(C`ev_io_set\*(C'\fR is being called, libev -will assume that this is potentially a new file descriptor, otherwise -it is assumed that the file descriptor stays the same. That means that -you \fIhave\fR to call \f(CW\*(C`ev_io_set\*(C'\fR (or \f(CW\*(C`ev_io_init\*(C'\fR) when you change the -descriptor even if the file descriptor number itself did not change. -.PP -This is how one would do it normally anyway, the important point is that -the libev application should not optimise around libev but should leave -optimisations to libev. -.PP -\fIThe special problem of dup'ed file descriptors\fR -.IX Subsection "The special problem of dup'ed file descriptors" -.PP -Some backends (e.g. epoll), cannot register events for file descriptors, -but only events for the underlying file descriptions. That means when you -have \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors or weirder constellations, and register -events for them, only one file descriptor might actually receive events. -.PP -There is no workaround possible except not registering events -for potentially \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors, or to resort to -\&\f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.PP -\fIThe special problem of files\fR -.IX Subsection "The special problem of files" -.PP -Many people try to use \f(CW\*(C`select\*(C'\fR (or libev) on file descriptors -representing files, and expect it to become ready when their program -doesn't block on disk accesses (which can take a long time on their own). -.PP -However, this cannot ever work in the \*(L"expected\*(R" way \- you get a readiness -notification as soon as the kernel knows whether and how much data is -there, and in the case of open files, that's always the case, so you -always get a readiness notification instantly, and your read (or possibly -write) will still block on the disk I/O. -.PP -Another way to view it is that in the case of sockets, pipes, character -devices and so on, there is another party (the sender) that delivers data -on its own, but in the case of files, there is no such thing: the disk -will not send data on its own, simply because it doesn't know what you -wish to read \- you would first have to request some data. -.PP -Since files are typically not-so-well supported by advanced notification -mechanism, libev tries hard to emulate \s-1POSIX\s0 behaviour with respect -to files, even though you should not use it. The reason for this is -convenience: sometimes you want to watch \s-1STDIN\s0 or \s-1STDOUT\s0, which is -usually a tty, often a pipe, but also sometimes files or special devices -(for example, \f(CW\*(C`epoll\*(C'\fR on Linux works with \fI/dev/random\fR but not with -\&\fI/dev/urandom\fR), and even though the file might better be served with -asynchronous I/O instead of with non-blocking I/O, it is still useful when -it \*(L"just works\*(R" instead of freezing. -.PP -So avoid file descriptors pointing to files when you know it (e.g. use -libeio), but use them when it is convenient, e.g. for \s-1STDIN/STDOUT\s0, or -when you rarely read from a file instead of from a socket, and want to -reuse the same code path. -.PP -\fIThe special problem of fork\fR -.IX Subsection "The special problem of fork" -.PP -Some backends (epoll, kqueue) do not support \f(CW\*(C`fork ()\*(C'\fR at all or exhibit -useless behaviour. Libev fully supports fork, but needs to be told about -it in the child if you want to continue to use it in the child. -.PP -To support fork in your child processes, you have to call \f(CW\*(C`ev_loop_fork -()\*(C'\fR after a fork in the child, enable \f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR, or resort to -\&\f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.PP -\fIThe special problem of \s-1SIGPIPE\s0\fR -.IX Subsection "The special problem of SIGPIPE" -.PP -While not really specific to libev, it is easy to forget about \f(CW\*(C`SIGPIPE\*(C'\fR: -when writing to a pipe whose other end has been closed, your program gets -sent a \s-1SIGPIPE\s0, which, by default, aborts your program. For most programs -this is sensible behaviour, for daemons, this is usually undesirable. -.PP -So when you encounter spurious, unexplained daemon exits, make sure you -ignore \s-1SIGPIPE\s0 (and maybe make sure you log the exit status of your daemon -somewhere, as that would have given you a big clue). -.PP -\fIThe special problem of \fIaccept()\fIing when you can't\fR -.IX Subsection "The special problem of accept()ing when you can't" -.PP -Many implementations of the \s-1POSIX\s0 \f(CW\*(C`accept\*(C'\fR function (for example, -found in post\-2004 Linux) have the peculiar behaviour of not removing a -connection from the pending queue in all error cases. -.PP -For example, larger servers often run out of file descriptors (because -of resource limits), causing \f(CW\*(C`accept\*(C'\fR to fail with \f(CW\*(C`ENFILE\*(C'\fR but not -rejecting the connection, leading to libev signalling readiness on -the next iteration again (the connection still exists after all), and -typically causing the program to loop at 100% \s-1CPU\s0 usage. -.PP -Unfortunately, the set of errors that cause this issue differs between -operating systems, there is usually little the app can do to remedy the -situation, and no known thread-safe method of removing the connection to -cope with overload is known (to me). -.PP -One of the easiest ways to handle this situation is to just ignore it -\&\- when the program encounters an overload, it will just loop until the -situation is over. While this is a form of busy waiting, no \s-1OS\s0 offers an -event-based way to handle this situation, so it's the best one can do. -.PP -A better way to handle the situation is to log any errors other than -\&\f(CW\*(C`EAGAIN\*(C'\fR and \f(CW\*(C`EWOULDBLOCK\*(C'\fR, making sure not to flood the log with such -messages, and continue as usual, which at least gives the user an idea of -what could be wrong (\*(L"raise the ulimit!\*(R"). For extra points one could stop -the \f(CW\*(C`ev_io\*(C'\fR watcher on the listening fd \*(L"for a while\*(R", which reduces \s-1CPU\s0 -usage. -.PP -If your program is single-threaded, then you could also keep a dummy file -descriptor for overload situations (e.g. by opening \fI/dev/null\fR), and -when you run into \f(CW\*(C`ENFILE\*(C'\fR or \f(CW\*(C`EMFILE\*(C'\fR, close it, run \f(CW\*(C`accept\*(C'\fR, -close that fd, and create a new dummy fd. This will gracefully refuse -clients under typical overload conditions. -.PP -The last way to handle it is to simply log the error and \f(CW\*(C`exit\*(C'\fR, as -is often done with \f(CW\*(C`malloc\*(C'\fR failures, but this results in an easy -opportunity for a DoS attack. -.PP -\fIWatcher-Specific Functions\fR -.IX Subsection "Watcher-Specific Functions" -.IP "ev_io_init (ev_io *, callback, int fd, int events)" 4 -.IX Item "ev_io_init (ev_io *, callback, int fd, int events)" -.PD 0 -.IP "ev_io_set (ev_io *, int fd, int events)" 4 -.IX Item "ev_io_set (ev_io *, int fd, int events)" -.PD -Configures an \f(CW\*(C`ev_io\*(C'\fR watcher. The \f(CW\*(C`fd\*(C'\fR is the file descriptor to -receive events for and \f(CW\*(C`events\*(C'\fR is either \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or -\&\f(CW\*(C`EV_READ | EV_WRITE\*(C'\fR, to express the desire to receive the given events. -.IP "int fd [read\-only]" 4 -.IX Item "int fd [read-only]" -The file descriptor being watched. -.IP "int events [read\-only]" 4 -.IX Item "int events [read-only]" -The events being watched. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Call \f(CW\*(C`stdin_readable_cb\*(C'\fR when \s-1STDIN_FILENO\s0 has become, well -readable, but only once. Since it is likely line-buffered, you could -attempt to read a whole line in the callback. -.PP -.Vb 6 -\& static void -\& stdin_readable_cb (struct ev_loop *loop, ev_io *w, int revents) -\& { -\& ev_io_stop (loop, w); -\& .. read from stdin here (or from w\->fd) and handle any I/O errors -\& } -\& -\& ... -\& struct ev_loop *loop = ev_default_init (0); -\& ev_io stdin_readable; -\& ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ); -\& ev_io_start (loop, &stdin_readable); -\& ev_run (loop, 0); -.Ve -.ie n .SS """ev_timer"" \- relative and optionally repeating timeouts" -.el .SS "\f(CWev_timer\fP \- relative and optionally repeating timeouts" -.IX Subsection "ev_timer - relative and optionally repeating timeouts" -Timer watchers are simple relative timers that generate an event after a -given time, and optionally repeating in regular intervals after that. -.PP -The timers are based on real time, that is, if you register an event that -times out after an hour and you reset your system clock to January last -year, it will still time out after (roughly) one hour. \*(L"Roughly\*(R" because -detecting time jumps is hard, and some inaccuracies are unavoidable (the -monotonic clock option helps a lot here). -.PP -The callback is guaranteed to be invoked only \fIafter\fR its timeout has -passed (not \fIat\fR, so on systems with very low-resolution clocks this -might introduce a small delay). If multiple timers become ready during the -same loop iteration then the ones with earlier time-out values are invoked -before ones of the same priority with later time-out values (but this is -no longer true when a callback calls \f(CW\*(C`ev_run\*(C'\fR recursively). -.PP -\fIBe smart about timeouts\fR -.IX Subsection "Be smart about timeouts" -.PP -Many real-world problems involve some kind of timeout, usually for error -recovery. A typical example is an \s-1HTTP\s0 request \- if the other side hangs, -you want to raise some error after a while. -.PP -What follows are some ways to handle this problem, from obvious and -inefficient to smart and efficient. -.PP -In the following, a 60 second activity timeout is assumed \- a timeout that -gets reset to 60 seconds each time there is activity (e.g. each time some -data or other life sign was received). -.IP "1. Use a timer and stop, reinitialise and start it on activity." 4 -.IX Item "1. Use a timer and stop, reinitialise and start it on activity." -This is the most obvious, but not the most simple way: In the beginning, -start the watcher: -.Sp -.Vb 2 -\& ev_timer_init (timer, callback, 60., 0.); -\& ev_timer_start (loop, timer); -.Ve -.Sp -Then, each time there is some activity, \f(CW\*(C`ev_timer_stop\*(C'\fR it, initialise it -and start it again: -.Sp -.Vb 3 -\& ev_timer_stop (loop, timer); -\& ev_timer_set (timer, 60., 0.); -\& ev_timer_start (loop, timer); -.Ve -.Sp -This is relatively simple to implement, but means that each time there is -some activity, libev will first have to remove the timer from its internal -data structure and then add it again. Libev tries to be fast, but it's -still not a constant-time operation. -.ie n .IP "2. Use a timer and re-start it with ""ev_timer_again"" inactivity." 4 -.el .IP "2. Use a timer and re-start it with \f(CWev_timer_again\fR inactivity." 4 -.IX Item "2. Use a timer and re-start it with ev_timer_again inactivity." -This is the easiest way, and involves using \f(CW\*(C`ev_timer_again\*(C'\fR instead of -\&\f(CW\*(C`ev_timer_start\*(C'\fR. -.Sp -To implement this, configure an \f(CW\*(C`ev_timer\*(C'\fR with a \f(CW\*(C`repeat\*(C'\fR value -of \f(CW60\fR and then call \f(CW\*(C`ev_timer_again\*(C'\fR at start and each time you -successfully read or write some data. If you go into an idle state where -you do not expect data to travel on the socket, you can \f(CW\*(C`ev_timer_stop\*(C'\fR -the timer, and \f(CW\*(C`ev_timer_again\*(C'\fR will automatically restart it if need be. -.Sp -That means you can ignore both the \f(CW\*(C`ev_timer_start\*(C'\fR function and the -\&\f(CW\*(C`after\*(C'\fR argument to \f(CW\*(C`ev_timer_set\*(C'\fR, and only ever use the \f(CW\*(C`repeat\*(C'\fR -member and \f(CW\*(C`ev_timer_again\*(C'\fR. -.Sp -At start: -.Sp -.Vb 3 -\& ev_init (timer, callback); -\& timer\->repeat = 60.; -\& ev_timer_again (loop, timer); -.Ve -.Sp -Each time there is some activity: -.Sp -.Vb 1 -\& ev_timer_again (loop, timer); -.Ve -.Sp -It is even possible to change the time-out on the fly, regardless of -whether the watcher is active or not: -.Sp -.Vb 2 -\& timer\->repeat = 30.; -\& ev_timer_again (loop, timer); -.Ve -.Sp -This is slightly more efficient then stopping/starting the timer each time -you want to modify its timeout value, as libev does not have to completely -remove and re-insert the timer from/into its internal data structure. -.Sp -It is, however, even simpler than the \*(L"obvious\*(R" way to do it. -.IP "3. Let the timer time out, but then re-arm it as required." 4 -.IX Item "3. Let the timer time out, but then re-arm it as required." -This method is more tricky, but usually most efficient: Most timeouts are -relatively long compared to the intervals between other activity \- in -our example, within 60 seconds, there are usually many I/O events with -associated activity resets. -.Sp -In this case, it would be more efficient to leave the \f(CW\*(C`ev_timer\*(C'\fR alone, -but remember the time of last activity, and check for a real timeout only -within the callback: -.Sp -.Vb 1 -\& ev_tstamp last_activity; // time of last activity -\& -\& static void -\& callback (EV_P_ ev_timer *w, int revents) -\& { -\& ev_tstamp now = ev_now (EV_A); -\& ev_tstamp timeout = last_activity + 60.; -\& -\& // if last_activity + 60. is older than now, we did time out -\& if (timeout < now) -\& { -\& // timeout occurred, take action -\& } -\& else -\& { -\& // callback was invoked, but there was some activity, re\-arm -\& // the watcher to fire in last_activity + 60, which is -\& // guaranteed to be in the future, so "again" is positive: -\& w\->repeat = timeout \- now; -\& ev_timer_again (EV_A_ w); -\& } -\& } -.Ve -.Sp -To summarise the callback: first calculate the real timeout (defined -as \*(L"60 seconds after the last activity\*(R"), then check if that time has -been reached, which means something \fIdid\fR, in fact, time out. Otherwise -the callback was invoked too early (\f(CW\*(C`timeout\*(C'\fR is in the future), so -re-schedule the timer to fire at that future time, to see if maybe we have -a timeout then. -.Sp -Note how \f(CW\*(C`ev_timer_again\*(C'\fR is used, taking advantage of the -\&\f(CW\*(C`ev_timer_again\*(C'\fR optimisation when the timer is already running. -.Sp -This scheme causes more callback invocations (about one every 60 seconds -minus half the average time between activity), but virtually no calls to -libev to change the timeout. -.Sp -To start the timer, simply initialise the watcher and set \f(CW\*(C`last_activity\*(C'\fR -to the current time (meaning we just have some activity :), then call the -callback, which will \*(L"do the right thing\*(R" and start the timer: -.Sp -.Vb 3 -\& ev_init (timer, callback); -\& last_activity = ev_now (loop); -\& callback (loop, timer, EV_TIMER); -.Ve -.Sp -And when there is some activity, simply store the current time in -\&\f(CW\*(C`last_activity\*(C'\fR, no libev calls at all: -.Sp -.Vb 1 -\& last_activity = ev_now (loop); -.Ve -.Sp -This technique is slightly more complex, but in most cases where the -time-out is unlikely to be triggered, much more efficient. -.Sp -Changing the timeout is trivial as well (if it isn't hard-coded in the -callback :) \- just change the timeout and invoke the callback, which will -fix things for you. -.IP "4. Wee, just use a double-linked list for your timeouts." 4 -.IX Item "4. Wee, just use a double-linked list for your timeouts." -If there is not one request, but many thousands (millions...), all -employing some kind of timeout with the same timeout value, then one can -do even better: -.Sp -When starting the timeout, calculate the timeout value and put the timeout -at the \fIend\fR of the list. -.Sp -Then use an \f(CW\*(C`ev_timer\*(C'\fR to fire when the timeout at the \fIbeginning\fR of -the list is expected to fire (for example, using the technique #3). -.Sp -When there is some activity, remove the timer from the list, recalculate -the timeout, append it to the end of the list again, and make sure to -update the \f(CW\*(C`ev_timer\*(C'\fR if it was taken from the beginning of the list. -.Sp -This way, one can manage an unlimited number of timeouts in O(1) time for -starting, stopping and updating the timers, at the expense of a major -complication, and having to use a constant timeout. The constant timeout -ensures that the list stays sorted. -.PP -So which method the best? -.PP -Method #2 is a simple no-brain-required solution that is adequate in most -situations. Method #3 requires a bit more thinking, but handles many cases -better, and isn't very complicated either. In most case, choosing either -one is fine, with #3 being better in typical situations. -.PP -Method #1 is almost always a bad idea, and buys you nothing. Method #4 is -rather complicated, but extremely efficient, something that really pays -off after the first million or so of active timers, i.e. it's usually -overkill :) -.PP -\fIThe special problem of time updates\fR -.IX Subsection "The special problem of time updates" -.PP -Establishing the current time is a costly operation (it usually takes at -least two system calls): \s-1EV\s0 therefore updates its idea of the current -time only before and after \f(CW\*(C`ev_run\*(C'\fR collects new events, which causes a -growing difference between \f(CW\*(C`ev_now ()\*(C'\fR and \f(CW\*(C`ev_time ()\*(C'\fR when handling -lots of events in one iteration. -.PP -The relative timeouts are calculated relative to the \f(CW\*(C`ev_now ()\*(C'\fR -time. This is usually the right thing as this timestamp refers to the time -of the event triggering whatever timeout you are modifying/starting. If -you suspect event processing to be delayed and you \fIneed\fR to base the -timeout on the current time, use something like this to adjust for this: -.PP -.Vb 1 -\& ev_timer_set (&timer, after + ev_now () \- ev_time (), 0.); -.Ve -.PP -If the event loop is suspended for a long time, you can also force an -update of the time returned by \f(CW\*(C`ev_now ()\*(C'\fR by calling \f(CW\*(C`ev_now_update -()\*(C'\fR. -.PP -\fIThe special problems of suspended animation\fR -.IX Subsection "The special problems of suspended animation" -.PP -When you leave the server world it is quite customary to hit machines that -can suspend/hibernate \- what happens to the clocks during such a suspend? -.PP -Some quick tests made with a Linux 2.6.28 indicate that a suspend freezes -all processes, while the clocks (\f(CW\*(C`times\*(C'\fR, \f(CW\*(C`CLOCK_MONOTONIC\*(C'\fR) continue -to run until the system is suspended, but they will not advance while the -system is suspended. That means, on resume, it will be as if the program -was frozen for a few seconds, but the suspend time will not be counted -towards \f(CW\*(C`ev_timer\*(C'\fR when a monotonic clock source is used. The real time -clock advanced as expected, but if it is used as sole clocksource, then a -long suspend would be detected as a time jump by libev, and timers would -be adjusted accordingly. -.PP -I would not be surprised to see different behaviour in different between -operating systems, \s-1OS\s0 versions or even different hardware. -.PP -The other form of suspend (job control, or sending a \s-1SIGSTOP\s0) will see a -time jump in the monotonic clocks and the realtime clock. If the program -is suspended for a very long time, and monotonic clock sources are in use, -then you can expect \f(CW\*(C`ev_timer\*(C'\fRs to expire as the full suspension time -will be counted towards the timers. When no monotonic clock source is in -use, then libev will again assume a timejump and adjust accordingly. -.PP -It might be beneficial for this latter case to call \f(CW\*(C`ev_suspend\*(C'\fR -and \f(CW\*(C`ev_resume\*(C'\fR in code that handles \f(CW\*(C`SIGTSTP\*(C'\fR, to at least get -deterministic behaviour in this case (you can do nothing against -\&\f(CW\*(C`SIGSTOP\*(C'\fR). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" 4 -.IX Item "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" -.PD 0 -.IP "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" 4 -.IX Item "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" -.PD -Configure the timer to trigger after \f(CW\*(C`after\*(C'\fR seconds. If \f(CW\*(C`repeat\*(C'\fR -is \f(CW0.\fR, then it will automatically be stopped once the timeout is -reached. If it is positive, then the timer will automatically be -configured to trigger again \f(CW\*(C`repeat\*(C'\fR seconds later, again, and again, -until stopped manually. -.Sp -The timer itself will do a best-effort at avoiding drift, that is, if -you configure a timer to trigger every 10 seconds, then it will normally -trigger at exactly 10 second intervals. If, however, your program cannot -keep up with the timer (because it takes longer than those 10 seconds to -do stuff) the timer will not fire more than once per event loop iteration. -.IP "ev_timer_again (loop, ev_timer *)" 4 -.IX Item "ev_timer_again (loop, ev_timer *)" -This will act as if the timer timed out and restart it again if it is -repeating. The exact semantics are: -.Sp -If the timer is pending, its pending status is cleared. -.Sp -If the timer is started but non-repeating, stop it (as if it timed out). -.Sp -If the timer is repeating, either start it if necessary (with the -\&\f(CW\*(C`repeat\*(C'\fR value), or reset the running timer to the \f(CW\*(C`repeat\*(C'\fR value. -.Sp -This sounds a bit complicated, see \*(L"Be smart about timeouts\*(R", above, for a -usage example. -.IP "ev_tstamp ev_timer_remaining (loop, ev_timer *)" 4 -.IX Item "ev_tstamp ev_timer_remaining (loop, ev_timer *)" -Returns the remaining time until a timer fires. If the timer is active, -then this time is relative to the current event loop time, otherwise it's -the timeout value currently configured. -.Sp -That is, after an \f(CW\*(C`ev_timer_set (w, 5, 7)\*(C'\fR, \f(CW\*(C`ev_timer_remaining\*(C'\fR returns -\&\f(CW5\fR. When the timer is started and one second passes, \f(CW\*(C`ev_timer_remaining\*(C'\fR -will return \f(CW4\fR. When the timer expires and is restarted, it will return -roughly \f(CW7\fR (likely slightly less as callback invocation takes some time, -too), and so on. -.IP "ev_tstamp repeat [read\-write]" 4 -.IX Item "ev_tstamp repeat [read-write]" -The current \f(CW\*(C`repeat\*(C'\fR value. Will be used each time the watcher times out -or \f(CW\*(C`ev_timer_again\*(C'\fR is called, and determines the next timeout (if any), -which is also when any modifications are taken into account. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Create a timer that fires after 60 seconds. -.PP -.Vb 5 -\& static void -\& one_minute_cb (struct ev_loop *loop, ev_timer *w, int revents) -\& { -\& .. one minute over, w is actually stopped right here -\& } -\& -\& ev_timer mytimer; -\& ev_timer_init (&mytimer, one_minute_cb, 60., 0.); -\& ev_timer_start (loop, &mytimer); -.Ve -.PP -Example: Create a timeout timer that times out after 10 seconds of -inactivity. -.PP -.Vb 5 -\& static void -\& timeout_cb (struct ev_loop *loop, ev_timer *w, int revents) -\& { -\& .. ten seconds without any activity -\& } -\& -\& ev_timer mytimer; -\& ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */ -\& ev_timer_again (&mytimer); /* start timer */ -\& ev_run (loop, 0); -\& -\& // and in some piece of code that gets executed on any "activity": -\& // reset the timeout to start ticking again at 10 seconds -\& ev_timer_again (&mytimer); -.Ve -.ie n .SS """ev_periodic"" \- to cron or not to cron?" -.el .SS "\f(CWev_periodic\fP \- to cron or not to cron?" -.IX Subsection "ev_periodic - to cron or not to cron?" -Periodic watchers are also timers of a kind, but they are very versatile -(and unfortunately a bit complex). -.PP -Unlike \f(CW\*(C`ev_timer\*(C'\fR, periodic watchers are not based on real time (or -relative time, the physical time that passes) but on wall clock time -(absolute time, the thing you can read on your calender or clock). The -difference is that wall clock time can run faster or slower than real -time, and time jumps are not uncommon (e.g. when you adjust your -wrist-watch). -.PP -You can tell a periodic watcher to trigger after some specific point -in time: for example, if you tell a periodic watcher to trigger \*(L"in 10 -seconds\*(R" (by specifying e.g. \f(CW\*(C`ev_now () + 10.\*(C'\fR, that is, an absolute time -not a delay) and then reset your system clock to January of the previous -year, then it will take a year or more to trigger the event (unlike an -\&\f(CW\*(C`ev_timer\*(C'\fR, which would still trigger roughly 10 seconds after starting -it, as it uses a relative timeout). -.PP -\&\f(CW\*(C`ev_periodic\*(C'\fR watchers can also be used to implement vastly more complex -timers, such as triggering an event on each \*(L"midnight, local time\*(R", or -other complicated rules. This cannot be done with \f(CW\*(C`ev_timer\*(C'\fR watchers, as -those cannot react to time jumps. -.PP -As with timers, the callback is guaranteed to be invoked only when the -point in time where it is supposed to trigger has passed. If multiple -timers become ready during the same loop iteration then the ones with -earlier time-out values are invoked before ones with later time-out values -(but this is no longer true when a callback calls \f(CW\*(C`ev_run\*(C'\fR recursively). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_periodic_init (ev_periodic *, callback, ev_tstamp offset, ev_tstamp interval, reschedule_cb)" 4 -.IX Item "ev_periodic_init (ev_periodic *, callback, ev_tstamp offset, ev_tstamp interval, reschedule_cb)" -.PD 0 -.IP "ev_periodic_set (ev_periodic *, ev_tstamp offset, ev_tstamp interval, reschedule_cb)" 4 -.IX Item "ev_periodic_set (ev_periodic *, ev_tstamp offset, ev_tstamp interval, reschedule_cb)" -.PD -Lots of arguments, let's sort it out... There are basically three modes of -operation, and we will explain them from simplest to most complex: -.RS 4 -.IP "\(bu" 4 -absolute timer (offset = absolute time, interval = 0, reschedule_cb = 0) -.Sp -In this configuration the watcher triggers an event after the wall clock -time \f(CW\*(C`offset\*(C'\fR has passed. It will not repeat and will not adjust when a -time jump occurs, that is, if it is to be run at January 1st 2011 then it -will be stopped and invoked when the system clock reaches or surpasses -this point in time. -.IP "\(bu" 4 -repeating interval timer (offset = offset within interval, interval > 0, reschedule_cb = 0) -.Sp -In this mode the watcher will always be scheduled to time out at the next -\&\f(CW\*(C`offset + N * interval\*(C'\fR time (for some integer N, which can also be -negative) and then repeat, regardless of any time jumps. The \f(CW\*(C`offset\*(C'\fR -argument is merely an offset into the \f(CW\*(C`interval\*(C'\fR periods. -.Sp -This can be used to create timers that do not drift with respect to the -system clock, for example, here is an \f(CW\*(C`ev_periodic\*(C'\fR that triggers each -hour, on the hour (with respect to \s-1UTC\s0): -.Sp -.Vb 1 -\& ev_periodic_set (&periodic, 0., 3600., 0); -.Ve -.Sp -This doesn't mean there will always be 3600 seconds in between triggers, -but only that the callback will be called when the system time shows a -full hour (\s-1UTC\s0), or more correctly, when the system time is evenly divisible -by 3600. -.Sp -Another way to think about it (for the mathematically inclined) is that -\&\f(CW\*(C`ev_periodic\*(C'\fR will try to run the callback in this mode at the next possible -time where \f(CW\*(C`time = offset (mod interval)\*(C'\fR, regardless of any time jumps. -.Sp -For numerical stability it is preferable that the \f(CW\*(C`offset\*(C'\fR value is near -\&\f(CW\*(C`ev_now ()\*(C'\fR (the current time), but there is no range requirement for -this value, and in fact is often specified as zero. -.Sp -Note also that there is an upper limit to how often a timer can fire (\s-1CPU\s0 -speed for example), so if \f(CW\*(C`interval\*(C'\fR is very small then timing stability -will of course deteriorate. Libev itself tries to be exact to be about one -millisecond (if the \s-1OS\s0 supports it and the machine is fast enough). -.IP "\(bu" 4 -manual reschedule mode (offset ignored, interval ignored, reschedule_cb = callback) -.Sp -In this mode the values for \f(CW\*(C`interval\*(C'\fR and \f(CW\*(C`offset\*(C'\fR are both being -ignored. Instead, each time the periodic watcher gets scheduled, the -reschedule callback will be called with the watcher as first, and the -current time as second argument. -.Sp -\&\s-1NOTE:\s0 \fIThis callback \s-1MUST\s0 \s-1NOT\s0 stop or destroy any periodic watcher, ever, -or make \s-1ANY\s0 other event loop modifications whatsoever, unless explicitly -allowed by documentation here\fR. -.Sp -If you need to stop it, return \f(CW\*(C`now + 1e30\*(C'\fR (or so, fudge fudge) and stop -it afterwards (e.g. by starting an \f(CW\*(C`ev_prepare\*(C'\fR watcher, which is the -only event loop modification you are allowed to do). -.Sp -The callback prototype is \f(CW\*(C`ev_tstamp (*reschedule_cb)(ev_periodic -*w, ev_tstamp now)\*(C'\fR, e.g.: -.Sp -.Vb 5 -\& static ev_tstamp -\& my_rescheduler (ev_periodic *w, ev_tstamp now) -\& { -\& return now + 60.; -\& } -.Ve -.Sp -It must return the next time to trigger, based on the passed time value -(that is, the lowest time value larger than to the second argument). It -will usually be called just before the callback will be triggered, but -might be called at other times, too. -.Sp -\&\s-1NOTE:\s0 \fIThis callback must always return a time that is higher than or -equal to the passed \f(CI\*(C`now\*(C'\fI value\fR. -.Sp -This can be used to create very complex timers, such as a timer that -triggers on \*(L"next midnight, local time\*(R". To do this, you would calculate the -next midnight after \f(CW\*(C`now\*(C'\fR and return the timestamp value for this. How -you do this is, again, up to you (but it is not trivial, which is the main -reason I omitted it as an example). -.RE -.RS 4 -.RE -.IP "ev_periodic_again (loop, ev_periodic *)" 4 -.IX Item "ev_periodic_again (loop, ev_periodic *)" -Simply stops and restarts the periodic watcher again. This is only useful -when you changed some parameters or the reschedule callback would return -a different time than the last time it was called (e.g. in a crond like -program when the crontabs have changed). -.IP "ev_tstamp ev_periodic_at (ev_periodic *)" 4 -.IX Item "ev_tstamp ev_periodic_at (ev_periodic *)" -When active, returns the absolute time that the watcher is supposed -to trigger next. This is not the same as the \f(CW\*(C`offset\*(C'\fR argument to -\&\f(CW\*(C`ev_periodic_set\*(C'\fR, but indeed works even in interval and manual -rescheduling modes. -.IP "ev_tstamp offset [read\-write]" 4 -.IX Item "ev_tstamp offset [read-write]" -When repeating, this contains the offset value, otherwise this is the -absolute point in time (the \f(CW\*(C`offset\*(C'\fR value passed to \f(CW\*(C`ev_periodic_set\*(C'\fR, -although libev might modify this value for better numerical stability). -.Sp -Can be modified any time, but changes only take effect when the periodic -timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called. -.IP "ev_tstamp interval [read\-write]" 4 -.IX Item "ev_tstamp interval [read-write]" -The current interval value. Can be modified any time, but changes only -take effect when the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being -called. -.IP "ev_tstamp (*reschedule_cb)(ev_periodic *w, ev_tstamp now) [read\-write]" 4 -.IX Item "ev_tstamp (*reschedule_cb)(ev_periodic *w, ev_tstamp now) [read-write]" -The current reschedule callback, or \f(CW0\fR, if this functionality is -switched off. Can be changed any time, but changes only take effect when -the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Call a callback every hour, or, more precisely, whenever the -system time is divisible by 3600. The callback invocation times have -potentially a lot of jitter, but good long-term stability. -.PP -.Vb 5 -\& static void -\& clock_cb (struct ev_loop *loop, ev_periodic *w, int revents) -\& { -\& ... its now a full hour (UTC, or TAI or whatever your clock follows) -\& } -\& -\& ev_periodic hourly_tick; -\& ev_periodic_init (&hourly_tick, clock_cb, 0., 3600., 0); -\& ev_periodic_start (loop, &hourly_tick); -.Ve -.PP -Example: The same as above, but use a reschedule callback to do it: -.PP -.Vb 1 -\& #include -\& -\& static ev_tstamp -\& my_scheduler_cb (ev_periodic *w, ev_tstamp now) -\& { -\& return now + (3600. \- fmod (now, 3600.)); -\& } -\& -\& ev_periodic_init (&hourly_tick, clock_cb, 0., 0., my_scheduler_cb); -.Ve -.PP -Example: Call a callback every hour, starting now: -.PP -.Vb 4 -\& ev_periodic hourly_tick; -\& ev_periodic_init (&hourly_tick, clock_cb, -\& fmod (ev_now (loop), 3600.), 3600., 0); -\& ev_periodic_start (loop, &hourly_tick); -.Ve -.ie n .SS """ev_signal"" \- signal me when a signal gets signalled!" -.el .SS "\f(CWev_signal\fP \- signal me when a signal gets signalled!" -.IX Subsection "ev_signal - signal me when a signal gets signalled!" -Signal watchers will trigger an event when the process receives a specific -signal one or more times. Even though signals are very asynchronous, libev -will try its best to deliver signals synchronously, i.e. as part of the -normal event processing, like any other event. -.PP -If you want signals to be delivered truly asynchronously, just use -\&\f(CW\*(C`sigaction\*(C'\fR as you would do without libev and forget about sharing -the signal. You can even use \f(CW\*(C`ev_async\*(C'\fR from a signal handler to -synchronously wake up an event loop. -.PP -You can configure as many watchers as you like for the same signal, but -only within the same loop, i.e. you can watch for \f(CW\*(C`SIGINT\*(C'\fR in your -default loop and for \f(CW\*(C`SIGIO\*(C'\fR in another loop, but you cannot watch for -\&\f(CW\*(C`SIGINT\*(C'\fR in both the default loop and another loop at the same time. At -the moment, \f(CW\*(C`SIGCHLD\*(C'\fR is permanently tied to the default loop. -.PP -When the first watcher gets started will libev actually register something -with the kernel (thus it coexists with your own signal handlers as long as -you don't register any with libev for the same signal). -.PP -If possible and supported, libev will install its handlers with -\&\f(CW\*(C`SA_RESTART\*(C'\fR (or equivalent) behaviour enabled, so system calls should -not be unduly interrupted. If you have a problem with system calls getting -interrupted by signals you can block all signals in an \f(CW\*(C`ev_check\*(C'\fR watcher -and unblock them in an \f(CW\*(C`ev_prepare\*(C'\fR watcher. -.PP -\fIThe special problem of inheritance over fork/execve/pthread_create\fR -.IX Subsection "The special problem of inheritance over fork/execve/pthread_create" -.PP -Both the signal mask (\f(CW\*(C`sigprocmask\*(C'\fR) and the signal disposition -(\f(CW\*(C`sigaction\*(C'\fR) are unspecified after starting a signal watcher (and after -stopping it again), that is, libev might or might not block the signal, -and might or might not set or restore the installed signal handler (but -see \f(CW\*(C`EVFLAG_NOSIGMASK\*(C'\fR). -.PP -While this does not matter for the signal disposition (libev never -sets signals to \f(CW\*(C`SIG_IGN\*(C'\fR, so handlers will be reset to \f(CW\*(C`SIG_DFL\*(C'\fR on -\&\f(CW\*(C`execve\*(C'\fR), this matters for the signal mask: many programs do not expect -certain signals to be blocked. -.PP -This means that before calling \f(CW\*(C`exec\*(C'\fR (from the child) you should reset -the signal mask to whatever \*(L"default\*(R" you expect (all clear is a good -choice usually). -.PP -The simplest way to ensure that the signal mask is reset in the child is -to install a fork handler with \f(CW\*(C`pthread_atfork\*(C'\fR that resets it. That will -catch fork calls done by libraries (such as the libc) as well. -.PP -In current versions of libev, the signal will not be blocked indefinitely -unless you use the \f(CW\*(C`signalfd\*(C'\fR \s-1API\s0 (\f(CW\*(C`EV_SIGNALFD\*(C'\fR). While this reduces -the window of opportunity for problems, it will not go away, as libev -\&\fIhas\fR to modify the signal mask, at least temporarily. -.PP -So I can't stress this enough: \fIIf you do not reset your signal mask when -you expect it to be empty, you have a race condition in your code\fR. This -is not a libev-specific thing, this is true for most event libraries. -.PP -\fIThe special problem of threads signal handling\fR -.IX Subsection "The special problem of threads signal handling" -.PP -\&\s-1POSIX\s0 threads has problematic signal handling semantics, specifically, -a lot of functionality (sigfd, sigwait etc.) only really works if all -threads in a process block signals, which is hard to achieve. -.PP -When you want to use sigwait (or mix libev signal handling with your own -for the same signals), you can tackle this problem by globally blocking -all signals before creating any threads (or creating them with a fully set -sigprocmask) and also specifying the \f(CW\*(C`EVFLAG_NOSIGMASK\*(C'\fR when creating -loops. Then designate one thread as \*(L"signal receiver thread\*(R" which handles -these signals. You can pass on any signals that libev might be interested -in by calling \f(CW\*(C`ev_feed_signal\*(C'\fR. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_signal_init (ev_signal *, callback, int signum)" 4 -.IX Item "ev_signal_init (ev_signal *, callback, int signum)" -.PD 0 -.IP "ev_signal_set (ev_signal *, int signum)" 4 -.IX Item "ev_signal_set (ev_signal *, int signum)" -.PD -Configures the watcher to trigger on the given signal number (usually one -of the \f(CW\*(C`SIGxxx\*(C'\fR constants). -.IP "int signum [read\-only]" 4 -.IX Item "int signum [read-only]" -The signal the watcher watches out for. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Try to exit cleanly on \s-1SIGINT\s0. -.PP -.Vb 5 -\& static void -\& sigint_cb (struct ev_loop *loop, ev_signal *w, int revents) -\& { -\& ev_break (loop, EVBREAK_ALL); -\& } -\& -\& ev_signal signal_watcher; -\& ev_signal_init (&signal_watcher, sigint_cb, SIGINT); -\& ev_signal_start (loop, &signal_watcher); -.Ve -.ie n .SS """ev_child"" \- watch out for process status changes" -.el .SS "\f(CWev_child\fP \- watch out for process status changes" -.IX Subsection "ev_child - watch out for process status changes" -Child watchers trigger when your process receives a \s-1SIGCHLD\s0 in response to -some child status changes (most typically when a child of yours dies or -exits). It is permissible to install a child watcher \fIafter\fR the child -has been forked (which implies it might have already exited), as long -as the event loop isn't entered (or is continued from a watcher), i.e., -forking and then immediately registering a watcher for the child is fine, -but forking and registering a watcher a few event loop iterations later or -in the next callback invocation is not. -.PP -Only the default event loop is capable of handling signals, and therefore -you can only register child watchers in the default event loop. -.PP -Due to some design glitches inside libev, child watchers will always be -handled at maximum priority (their priority is set to \f(CW\*(C`EV_MAXPRI\*(C'\fR by -libev) -.PP -\fIProcess Interaction\fR -.IX Subsection "Process Interaction" -.PP -Libev grabs \f(CW\*(C`SIGCHLD\*(C'\fR as soon as the default event loop is -initialised. This is necessary to guarantee proper behaviour even if the -first child watcher is started after the child exits. The occurrence -of \f(CW\*(C`SIGCHLD\*(C'\fR is recorded asynchronously, but child reaping is done -synchronously as part of the event loop processing. Libev always reaps all -children, even ones not watched. -.PP -\fIOverriding the Built-In Processing\fR -.IX Subsection "Overriding the Built-In Processing" -.PP -Libev offers no special support for overriding the built-in child -processing, but if your application collides with libev's default child -handler, you can override it easily by installing your own handler for -\&\f(CW\*(C`SIGCHLD\*(C'\fR after initialising the default loop, and making sure the -default loop never gets destroyed. You are encouraged, however, to use an -event-based approach to child reaping and thus use libev's support for -that, so other libev users can use \f(CW\*(C`ev_child\*(C'\fR watchers freely. -.PP -\fIStopping the Child Watcher\fR -.IX Subsection "Stopping the Child Watcher" -.PP -Currently, the child watcher never gets stopped, even when the -child terminates, so normally one needs to stop the watcher in the -callback. Future versions of libev might stop the watcher automatically -when a child exit is detected (calling \f(CW\*(C`ev_child_stop\*(C'\fR twice is not a -problem). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_child_init (ev_child *, callback, int pid, int trace)" 4 -.IX Item "ev_child_init (ev_child *, callback, int pid, int trace)" -.PD 0 -.IP "ev_child_set (ev_child *, int pid, int trace)" 4 -.IX Item "ev_child_set (ev_child *, int pid, int trace)" -.PD -Configures the watcher to wait for status changes of process \f(CW\*(C`pid\*(C'\fR (or -\&\fIany\fR process if \f(CW\*(C`pid\*(C'\fR is specified as \f(CW0\fR). The callback can look -at the \f(CW\*(C`rstatus\*(C'\fR member of the \f(CW\*(C`ev_child\*(C'\fR watcher structure to see -the status word (use the macros from \f(CW\*(C`sys/wait.h\*(C'\fR and see your systems -\&\f(CW\*(C`waitpid\*(C'\fR documentation). The \f(CW\*(C`rpid\*(C'\fR member contains the pid of the -process causing the status change. \f(CW\*(C`trace\*(C'\fR must be either \f(CW0\fR (only -activate the watcher when the process terminates) or \f(CW1\fR (additionally -activate the watcher when the process is stopped or continued). -.IP "int pid [read\-only]" 4 -.IX Item "int pid [read-only]" -The process id this watcher watches out for, or \f(CW0\fR, meaning any process id. -.IP "int rpid [read\-write]" 4 -.IX Item "int rpid [read-write]" -The process id that detected a status change. -.IP "int rstatus [read\-write]" 4 -.IX Item "int rstatus [read-write]" -The process exit/trace status caused by \f(CW\*(C`rpid\*(C'\fR (see your systems -\&\f(CW\*(C`waitpid\*(C'\fR and \f(CW\*(C`sys/wait.h\*(C'\fR documentation for details). -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: \f(CW\*(C`fork()\*(C'\fR a new process and install a child handler to wait for -its completion. -.PP -.Vb 1 -\& ev_child cw; -\& -\& static void -\& child_cb (EV_P_ ev_child *w, int revents) -\& { -\& ev_child_stop (EV_A_ w); -\& printf ("process %d exited with status %x\en", w\->rpid, w\->rstatus); -\& } -\& -\& pid_t pid = fork (); -\& -\& if (pid < 0) -\& // error -\& else if (pid == 0) -\& { -\& // the forked child executes here -\& exit (1); -\& } -\& else -\& { -\& ev_child_init (&cw, child_cb, pid, 0); -\& ev_child_start (EV_DEFAULT_ &cw); -\& } -.Ve -.ie n .SS """ev_stat"" \- did the file attributes just change?" -.el .SS "\f(CWev_stat\fP \- did the file attributes just change?" -.IX Subsection "ev_stat - did the file attributes just change?" -This watches a file system path for attribute changes. That is, it calls -\&\f(CW\*(C`stat\*(C'\fR on that path in regular intervals (or when the \s-1OS\s0 says it changed) -and sees if it changed compared to the last time, invoking the callback if -it did. -.PP -The path does not need to exist: changing from \*(L"path exists\*(R" to \*(L"path does -not exist\*(R" is a status change like any other. The condition \*(L"path does not -exist\*(R" (or more correctly \*(L"path cannot be stat'ed\*(R") is signified by the -\&\f(CW\*(C`st_nlink\*(C'\fR field being zero (which is otherwise always forced to be at -least one) and all the other fields of the stat buffer having unspecified -contents. -.PP -The path \fImust not\fR end in a slash or contain special components such as -\&\f(CW\*(C`.\*(C'\fR or \f(CW\*(C`..\*(C'\fR. The path \fIshould\fR be absolute: If it is relative and -your working directory changes, then the behaviour is undefined. -.PP -Since there is no portable change notification interface available, the -portable implementation simply calls \f(CWstat(2)\fR regularly on the path -to see if it changed somehow. You can specify a recommended polling -interval for this case. If you specify a polling interval of \f(CW0\fR (highly -recommended!) then a \fIsuitable, unspecified default\fR value will be used -(which you can expect to be around five seconds, although this might -change dynamically). Libev will also impose a minimum interval which is -currently around \f(CW0.1\fR, but that's usually overkill. -.PP -This watcher type is not meant for massive numbers of stat watchers, -as even with OS-supported change notifications, this can be -resource-intensive. -.PP -At the time of this writing, the only OS-specific interface implemented -is the Linux inotify interface (implementing kqueue support is left as an -exercise for the reader. Note, however, that the author sees no way of -implementing \f(CW\*(C`ev_stat\*(C'\fR semantics with kqueue, except as a hint). -.PP -\fI\s-1ABI\s0 Issues (Largefile Support)\fR -.IX Subsection "ABI Issues (Largefile Support)" -.PP -Libev by default (unless the user overrides this) uses the default -compilation environment, which means that on systems with large file -support disabled by default, you get the 32 bit version of the stat -structure. When using the library from programs that change the \s-1ABI\s0 to -use 64 bit file offsets the programs will fail. In that case you have to -compile libev with the same flags to get binary compatibility. This is -obviously the case with any flags that change the \s-1ABI\s0, but the problem is -most noticeably displayed with ev_stat and large file support. -.PP -The solution for this is to lobby your distribution maker to make large -file interfaces available by default (as e.g. FreeBSD does) and not -optional. Libev cannot simply switch on large file support because it has -to exchange stat structures with application programs compiled using the -default compilation environment. -.PP -\fIInotify and Kqueue\fR -.IX Subsection "Inotify and Kqueue" -.PP -When \f(CW\*(C`inotify (7)\*(C'\fR support has been compiled into libev and present at -runtime, it will be used to speed up change detection where possible. The -inotify descriptor will be created lazily when the first \f(CW\*(C`ev_stat\*(C'\fR -watcher is being started. -.PP -Inotify presence does not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers -except that changes might be detected earlier, and in some cases, to avoid -making regular \f(CW\*(C`stat\*(C'\fR calls. Even in the presence of inotify support -there are many cases where libev has to resort to regular \f(CW\*(C`stat\*(C'\fR polling, -but as long as kernel 2.6.25 or newer is used (2.6.24 and older have too -many bugs), the path exists (i.e. stat succeeds), and the path resides on -a local filesystem (libev currently assumes only ext2/3, jfs, reiserfs and -xfs are fully working) libev usually gets away without polling. -.PP -There is no support for kqueue, as apparently it cannot be used to -implement this functionality, due to the requirement of having a file -descriptor open on the object at all times, and detecting renames, unlinks -etc. is difficult. -.PP -\fI\f(CI\*(C`stat ()\*(C'\fI is a synchronous operation\fR -.IX Subsection "stat () is a synchronous operation" -.PP -Libev doesn't normally do any kind of I/O itself, and so is not blocking -the process. The exception are \f(CW\*(C`ev_stat\*(C'\fR watchers \- those call \f(CW\*(C`stat -()\*(C'\fR, which is a synchronous operation. -.PP -For local paths, this usually doesn't matter: unless the system is very -busy or the intervals between stat's are large, a stat call will be fast, -as the path data is usually in memory already (except when starting the -watcher). -.PP -For networked file systems, calling \f(CW\*(C`stat ()\*(C'\fR can block an indefinite -time due to network issues, and even under good conditions, a stat call -often takes multiple milliseconds. -.PP -Therefore, it is best to avoid using \f(CW\*(C`ev_stat\*(C'\fR watchers on networked -paths, although this is fully supported by libev. -.PP -\fIThe special problem of stat time resolution\fR -.IX Subsection "The special problem of stat time resolution" -.PP -The \f(CW\*(C`stat ()\*(C'\fR system call only supports full-second resolution portably, -and even on systems where the resolution is higher, most file systems -still only support whole seconds. -.PP -That means that, if the time is the only thing that changes, you can -easily miss updates: on the first update, \f(CW\*(C`ev_stat\*(C'\fR detects a change and -calls your callback, which does something. When there is another update -within the same second, \f(CW\*(C`ev_stat\*(C'\fR will be unable to detect unless the -stat data does change in other ways (e.g. file size). -.PP -The solution to this is to delay acting on a change for slightly more -than a second (or till slightly after the next full second boundary), using -a roughly one-second-delay \f(CW\*(C`ev_timer\*(C'\fR (e.g. \f(CW\*(C`ev_timer_set (w, 0., 1.02); -ev_timer_again (loop, w)\*(C'\fR). -.PP -The \f(CW.02\fR offset is added to work around small timing inconsistencies -of some operating systems (where the second counter of the current time -might be be delayed. One such system is the Linux kernel, where a call to -\&\f(CW\*(C`gettimeofday\*(C'\fR might return a timestamp with a full second later than -a subsequent \f(CW\*(C`time\*(C'\fR call \- if the equivalent of \f(CW\*(C`time ()\*(C'\fR is used to -update file times then there will be a small window where the kernel uses -the previous second to update file times but libev might already execute -the timer callback). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" 4 -.IX Item "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" -.PD 0 -.IP "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" 4 -.IX Item "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" -.PD -Configures the watcher to wait for status changes of the given -\&\f(CW\*(C`path\*(C'\fR. The \f(CW\*(C`interval\*(C'\fR is a hint on how quickly a change is expected to -be detected and should normally be specified as \f(CW0\fR to let libev choose -a suitable value. The memory pointed to by \f(CW\*(C`path\*(C'\fR must point to the same -path for as long as the watcher is active. -.Sp -The callback will receive an \f(CW\*(C`EV_STAT\*(C'\fR event when a change was detected, -relative to the attributes at the time the watcher was started (or the -last change was detected). -.IP "ev_stat_stat (loop, ev_stat *)" 4 -.IX Item "ev_stat_stat (loop, ev_stat *)" -Updates the stat buffer immediately with new values. If you change the -watched path in your callback, you could call this function to avoid -detecting this change (while introducing a race condition if you are not -the only one changing the path). Can also be useful simply to find out the -new values. -.IP "ev_statdata attr [read\-only]" 4 -.IX Item "ev_statdata attr [read-only]" -The most-recently detected attributes of the file. Although the type is -\&\f(CW\*(C`ev_statdata\*(C'\fR, this is usually the (or one of the) \f(CW\*(C`struct stat\*(C'\fR types -suitable for your system, but you can only rely on the POSIX-standardised -members to be present. If the \f(CW\*(C`st_nlink\*(C'\fR member is \f(CW0\fR, then there was -some error while \f(CW\*(C`stat\*(C'\fRing the file. -.IP "ev_statdata prev [read\-only]" 4 -.IX Item "ev_statdata prev [read-only]" -The previous attributes of the file. The callback gets invoked whenever -\&\f(CW\*(C`prev\*(C'\fR != \f(CW\*(C`attr\*(C'\fR, or, more precisely, one or more of these members -differ: \f(CW\*(C`st_dev\*(C'\fR, \f(CW\*(C`st_ino\*(C'\fR, \f(CW\*(C`st_mode\*(C'\fR, \f(CW\*(C`st_nlink\*(C'\fR, \f(CW\*(C`st_uid\*(C'\fR, -\&\f(CW\*(C`st_gid\*(C'\fR, \f(CW\*(C`st_rdev\*(C'\fR, \f(CW\*(C`st_size\*(C'\fR, \f(CW\*(C`st_atime\*(C'\fR, \f(CW\*(C`st_mtime\*(C'\fR, \f(CW\*(C`st_ctime\*(C'\fR. -.IP "ev_tstamp interval [read\-only]" 4 -.IX Item "ev_tstamp interval [read-only]" -The specified interval. -.IP "const char *path [read\-only]" 4 -.IX Item "const char *path [read-only]" -The file system path that is being watched. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Watch \f(CW\*(C`/etc/passwd\*(C'\fR for attribute changes. -.PP -.Vb 10 -\& static void -\& passwd_cb (struct ev_loop *loop, ev_stat *w, int revents) -\& { -\& /* /etc/passwd changed in some way */ -\& if (w\->attr.st_nlink) -\& { -\& printf ("passwd current size %ld\en", (long)w\->attr.st_size); -\& printf ("passwd current atime %ld\en", (long)w\->attr.st_mtime); -\& printf ("passwd current mtime %ld\en", (long)w\->attr.st_mtime); -\& } -\& else -\& /* you shalt not abuse printf for puts */ -\& puts ("wow, /etc/passwd is not there, expect problems. " -\& "if this is windows, they already arrived\en"); -\& } -\& -\& ... -\& ev_stat passwd; -\& -\& ev_stat_init (&passwd, passwd_cb, "/etc/passwd", 0.); -\& ev_stat_start (loop, &passwd); -.Ve -.PP -Example: Like above, but additionally use a one-second delay so we do not -miss updates (however, frequent updates will delay processing, too, so -one might do the work both on \f(CW\*(C`ev_stat\*(C'\fR callback invocation \fIand\fR on -\&\f(CW\*(C`ev_timer\*(C'\fR callback invocation). -.PP -.Vb 2 -\& static ev_stat passwd; -\& static ev_timer timer; -\& -\& static void -\& timer_cb (EV_P_ ev_timer *w, int revents) -\& { -\& ev_timer_stop (EV_A_ w); -\& -\& /* now it\*(Aqs one second after the most recent passwd change */ -\& } -\& -\& static void -\& stat_cb (EV_P_ ev_stat *w, int revents) -\& { -\& /* reset the one\-second timer */ -\& ev_timer_again (EV_A_ &timer); -\& } -\& -\& ... -\& ev_stat_init (&passwd, stat_cb, "/etc/passwd", 0.); -\& ev_stat_start (loop, &passwd); -\& ev_timer_init (&timer, timer_cb, 0., 1.02); -.Ve -.ie n .SS """ev_idle"" \- when you've got nothing better to do..." -.el .SS "\f(CWev_idle\fP \- when you've got nothing better to do..." -.IX Subsection "ev_idle - when you've got nothing better to do..." -Idle watchers trigger events when no other events of the same or higher -priority are pending (prepare, check and other idle watchers do not count -as receiving \*(L"events\*(R"). -.PP -That is, as long as your process is busy handling sockets or timeouts -(or even signals, imagine) of the same or higher priority it will not be -triggered. But when your process is idle (or only lower-priority watchers -are pending), the idle watchers are being called once per event loop -iteration \- until stopped, that is, or your process receives more events -and becomes busy again with higher priority stuff. -.PP -The most noteworthy effect is that as long as any idle watchers are -active, the process will not block when waiting for new events. -.PP -Apart from keeping your process non-blocking (which is a useful -effect on its own sometimes), idle watchers are a good place to do -\&\*(L"pseudo-background processing\*(R", or delay processing stuff to after the -event loop has handled all outstanding events. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_idle_init (ev_idle *, callback)" 4 -.IX Item "ev_idle_init (ev_idle *, callback)" -Initialises and configures the idle watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_idle_set\*(C'\fR macro, but using it is utterly pointless, -believe me. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Dynamically allocate an \f(CW\*(C`ev_idle\*(C'\fR watcher, start it, and in the -callback, free it. Also, use no error checking, as usual. -.PP -.Vb 7 -\& static void -\& idle_cb (struct ev_loop *loop, ev_idle *w, int revents) -\& { -\& free (w); -\& // now do something you wanted to do when the program has -\& // no longer anything immediate to do. -\& } -\& -\& ev_idle *idle_watcher = malloc (sizeof (ev_idle)); -\& ev_idle_init (idle_watcher, idle_cb); -\& ev_idle_start (loop, idle_watcher); -.Ve -.ie n .SS """ev_prepare"" and ""ev_check"" \- customise your event loop!" -.el .SS "\f(CWev_prepare\fP and \f(CWev_check\fP \- customise your event loop!" -.IX Subsection "ev_prepare and ev_check - customise your event loop!" -Prepare and check watchers are usually (but not always) used in pairs: -prepare watchers get invoked before the process blocks and check watchers -afterwards. -.PP -You \fImust not\fR call \f(CW\*(C`ev_run\*(C'\fR or similar functions that enter -the current event loop from either \f(CW\*(C`ev_prepare\*(C'\fR or \f(CW\*(C`ev_check\*(C'\fR -watchers. Other loops than the current one are fine, however. The -rationale behind this is that you do not need to check for recursion in -those watchers, i.e. the sequence will always be \f(CW\*(C`ev_prepare\*(C'\fR, blocking, -\&\f(CW\*(C`ev_check\*(C'\fR so if you have one watcher of each kind they will always be -called in pairs bracketing the blocking call. -.PP -Their main purpose is to integrate other event mechanisms into libev and -their use is somewhat advanced. They could be used, for example, to track -variable changes, implement your own watchers, integrate net-snmp or a -coroutine library and lots more. They are also occasionally useful if -you cache some data and want to flush it before blocking (for example, -in X programs you might want to do an \f(CW\*(C`XFlush ()\*(C'\fR in an \f(CW\*(C`ev_prepare\*(C'\fR -watcher). -.PP -This is done by examining in each prepare call which file descriptors -need to be watched by the other library, registering \f(CW\*(C`ev_io\*(C'\fR watchers -for them and starting an \f(CW\*(C`ev_timer\*(C'\fR watcher for any timeouts (many -libraries provide exactly this functionality). Then, in the check watcher, -you check for any events that occurred (by checking the pending status -of all watchers and stopping them) and call back into the library. The -I/O and timer callbacks will never actually be called (but must be valid -nevertheless, because you never know, you know?). -.PP -As another example, the Perl Coro module uses these hooks to integrate -coroutines into libev programs, by yielding to other active coroutines -during each prepare and only letting the process block if no coroutines -are ready to run (it's actually more complicated: it only runs coroutines -with priority higher than or equal to the event loop and one coroutine -of lower priority, but only once, using idle watchers to keep the event -loop from blocking if lower-priority coroutines are active, thus mapping -low-priority coroutines to idle/background tasks). -.PP -It is recommended to give \f(CW\*(C`ev_check\*(C'\fR watchers highest (\f(CW\*(C`EV_MAXPRI\*(C'\fR) -priority, to ensure that they are being run before any other watchers -after the poll (this doesn't matter for \f(CW\*(C`ev_prepare\*(C'\fR watchers). -.PP -Also, \f(CW\*(C`ev_check\*(C'\fR watchers (and \f(CW\*(C`ev_prepare\*(C'\fR watchers, too) should not -activate (\*(L"feed\*(R") events into libev. While libev fully supports this, they -might get executed before other \f(CW\*(C`ev_check\*(C'\fR watchers did their job. As -\&\f(CW\*(C`ev_check\*(C'\fR watchers are often used to embed other (non-libev) event -loops those other event loops might be in an unusable state until their -\&\f(CW\*(C`ev_check\*(C'\fR watcher ran (always remind yourself to coexist peacefully with -others). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_prepare_init (ev_prepare *, callback)" 4 -.IX Item "ev_prepare_init (ev_prepare *, callback)" -.PD 0 -.IP "ev_check_init (ev_check *, callback)" 4 -.IX Item "ev_check_init (ev_check *, callback)" -.PD -Initialises and configures the prepare or check watcher \- they have no -parameters of any kind. There are \f(CW\*(C`ev_prepare_set\*(C'\fR and \f(CW\*(C`ev_check_set\*(C'\fR -macros, but using them is utterly, utterly, utterly and completely -pointless. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -There are a number of principal ways to embed other event loops or modules -into libev. Here are some ideas on how to include libadns into libev -(there is a Perl module named \f(CW\*(C`EV::ADNS\*(C'\fR that does this, which you could -use as a working example. Another Perl module named \f(CW\*(C`EV::Glib\*(C'\fR embeds a -Glib main context into libev, and finally, \f(CW\*(C`Glib::EV\*(C'\fR embeds \s-1EV\s0 into the -Glib event loop). -.PP -Method 1: Add \s-1IO\s0 watchers and a timeout watcher in a prepare handler, -and in a check watcher, destroy them and call into libadns. What follows -is pseudo-code only of course. This requires you to either use a low -priority for the check watcher or use \f(CW\*(C`ev_clear_pending\*(C'\fR explicitly, as -the callbacks for the IO/timeout watchers might not have been called yet. -.PP -.Vb 2 -\& static ev_io iow [nfd]; -\& static ev_timer tw; -\& -\& static void -\& io_cb (struct ev_loop *loop, ev_io *w, int revents) -\& { -\& } -\& -\& // create io watchers for each fd and a timer before blocking -\& static void -\& adns_prepare_cb (struct ev_loop *loop, ev_prepare *w, int revents) -\& { -\& int timeout = 3600000; -\& struct pollfd fds [nfd]; -\& // actual code will need to loop here and realloc etc. -\& adns_beforepoll (ads, fds, &nfd, &timeout, timeval_from (ev_time ())); -\& -\& /* the callback is illegal, but won\*(Aqt be called as we stop during check */ -\& ev_timer_init (&tw, 0, timeout * 1e\-3, 0.); -\& ev_timer_start (loop, &tw); -\& -\& // create one ev_io per pollfd -\& for (int i = 0; i < nfd; ++i) -\& { -\& ev_io_init (iow + i, io_cb, fds [i].fd, -\& ((fds [i].events & POLLIN ? EV_READ : 0) -\& | (fds [i].events & POLLOUT ? EV_WRITE : 0))); -\& -\& fds [i].revents = 0; -\& ev_io_start (loop, iow + i); -\& } -\& } -\& -\& // stop all watchers after blocking -\& static void -\& adns_check_cb (struct ev_loop *loop, ev_check *w, int revents) -\& { -\& ev_timer_stop (loop, &tw); -\& -\& for (int i = 0; i < nfd; ++i) -\& { -\& // set the relevant poll flags -\& // could also call adns_processreadable etc. here -\& struct pollfd *fd = fds + i; -\& int revents = ev_clear_pending (iow + i); -\& if (revents & EV_READ ) fd\->revents |= fd\->events & POLLIN; -\& if (revents & EV_WRITE) fd\->revents |= fd\->events & POLLOUT; -\& -\& // now stop the watcher -\& ev_io_stop (loop, iow + i); -\& } -\& -\& adns_afterpoll (adns, fds, nfd, timeval_from (ev_now (loop)); -\& } -.Ve -.PP -Method 2: This would be just like method 1, but you run \f(CW\*(C`adns_afterpoll\*(C'\fR -in the prepare watcher and would dispose of the check watcher. -.PP -Method 3: If the module to be embedded supports explicit event -notification (libadns does), you can also make use of the actual watcher -callbacks, and only destroy/create the watchers in the prepare watcher. -.PP -.Vb 5 -\& static void -\& timer_cb (EV_P_ ev_timer *w, int revents) -\& { -\& adns_state ads = (adns_state)w\->data; -\& update_now (EV_A); -\& -\& adns_processtimeouts (ads, &tv_now); -\& } -\& -\& static void -\& io_cb (EV_P_ ev_io *w, int revents) -\& { -\& adns_state ads = (adns_state)w\->data; -\& update_now (EV_A); -\& -\& if (revents & EV_READ ) adns_processreadable (ads, w\->fd, &tv_now); -\& if (revents & EV_WRITE) adns_processwriteable (ads, w\->fd, &tv_now); -\& } -\& -\& // do not ever call adns_afterpoll -.Ve -.PP -Method 4: Do not use a prepare or check watcher because the module you -want to embed is not flexible enough to support it. Instead, you can -override their poll function. The drawback with this solution is that the -main loop is now no longer controllable by \s-1EV\s0. The \f(CW\*(C`Glib::EV\*(C'\fR module uses -this approach, effectively embedding \s-1EV\s0 as a client into the horrible -libglib event loop. -.PP -.Vb 4 -\& static gint -\& event_poll_func (GPollFD *fds, guint nfds, gint timeout) -\& { -\& int got_events = 0; -\& -\& for (n = 0; n < nfds; ++n) -\& // create/start io watcher that sets the relevant bits in fds[n] and increment got_events -\& -\& if (timeout >= 0) -\& // create/start timer -\& -\& // poll -\& ev_run (EV_A_ 0); -\& -\& // stop timer again -\& if (timeout >= 0) -\& ev_timer_stop (EV_A_ &to); -\& -\& // stop io watchers again \- their callbacks should have set -\& for (n = 0; n < nfds; ++n) -\& ev_io_stop (EV_A_ iow [n]); -\& -\& return got_events; -\& } -.Ve -.ie n .SS """ev_embed"" \- when one backend isn't enough..." -.el .SS "\f(CWev_embed\fP \- when one backend isn't enough..." -.IX Subsection "ev_embed - when one backend isn't enough..." -This is a rather advanced watcher type that lets you embed one event loop -into another (currently only \f(CW\*(C`ev_io\*(C'\fR events are supported in the embedded -loop, other types of watchers might be handled in a delayed or incorrect -fashion and must not be used). -.PP -There are primarily two reasons you would want that: work around bugs and -prioritise I/O. -.PP -As an example for a bug workaround, the kqueue backend might only support -sockets on some platform, so it is unusable as generic backend, but you -still want to make use of it because you have many sockets and it scales -so nicely. In this case, you would create a kqueue-based loop and embed -it into your default loop (which might use e.g. poll). Overall operation -will be a bit slower because first libev has to call \f(CW\*(C`poll\*(C'\fR and then -\&\f(CW\*(C`kevent\*(C'\fR, but at least you can use both mechanisms for what they are -best: \f(CW\*(C`kqueue\*(C'\fR for scalable sockets and \f(CW\*(C`poll\*(C'\fR if you want it to work :) -.PP -As for prioritising I/O: under rare circumstances you have the case where -some fds have to be watched and handled very quickly (with low latency), -and even priorities and idle watchers might have too much overhead. In -this case you would put all the high priority stuff in one loop and all -the rest in a second one, and embed the second one in the first. -.PP -As long as the watcher is active, the callback will be invoked every -time there might be events pending in the embedded loop. The callback -must then call \f(CW\*(C`ev_embed_sweep (mainloop, watcher)\*(C'\fR to make a single -sweep and invoke their callbacks (the callback doesn't need to invoke the -\&\f(CW\*(C`ev_embed_sweep\*(C'\fR function directly, it could also start an idle watcher -to give the embedded loop strictly lower priority for example). -.PP -You can also set the callback to \f(CW0\fR, in which case the embed watcher -will automatically execute the embedded loop sweep whenever necessary. -.PP -Fork detection will be handled transparently while the \f(CW\*(C`ev_embed\*(C'\fR watcher -is active, i.e., the embedded loop will automatically be forked when the -embedding loop forks. In other cases, the user is responsible for calling -\&\f(CW\*(C`ev_loop_fork\*(C'\fR on the embedded loop. -.PP -Unfortunately, not all backends are embeddable: only the ones returned by -\&\f(CW\*(C`ev_embeddable_backends\*(C'\fR are, which, unfortunately, does not include any -portable one. -.PP -So when you want to use this feature you will always have to be prepared -that you cannot get an embeddable loop. The recommended way to get around -this is to have a separate variables for your embeddable loop, try to -create it, and if that fails, use the normal loop for everything. -.PP -\fI\f(CI\*(C`ev_embed\*(C'\fI and fork\fR -.IX Subsection "ev_embed and fork" -.PP -While the \f(CW\*(C`ev_embed\*(C'\fR watcher is running, forks in the embedding loop will -automatically be applied to the embedded loop as well, so no special -fork handling is required in that case. When the watcher is not running, -however, it is still the task of the libev user to call \f(CW\*(C`ev_loop_fork ()\*(C'\fR -as applicable. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" 4 -.IX Item "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" -.PD 0 -.IP "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" 4 -.IX Item "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" -.PD -Configures the watcher to embed the given loop, which must be -embeddable. If the callback is \f(CW0\fR, then \f(CW\*(C`ev_embed_sweep\*(C'\fR will be -invoked automatically, otherwise it is the responsibility of the callback -to invoke it (it will continue to be called until the sweep has been done, -if you do not want that, you need to temporarily stop the embed watcher). -.IP "ev_embed_sweep (loop, ev_embed *)" 4 -.IX Item "ev_embed_sweep (loop, ev_embed *)" -Make a single, non-blocking sweep over the embedded loop. This works -similarly to \f(CW\*(C`ev_run (embedded_loop, EVRUN_NOWAIT)\*(C'\fR, but in the most -appropriate way for embedded loops. -.IP "struct ev_loop *other [read\-only]" 4 -.IX Item "struct ev_loop *other [read-only]" -The embedded event loop. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Try to get an embeddable event loop and embed it into the default -event loop. If that is not possible, use the default loop. The default -loop is stored in \f(CW\*(C`loop_hi\*(C'\fR, while the embeddable loop is stored in -\&\f(CW\*(C`loop_lo\*(C'\fR (which is \f(CW\*(C`loop_hi\*(C'\fR in the case no embeddable loop can be -used). -.PP -.Vb 3 -\& struct ev_loop *loop_hi = ev_default_init (0); -\& struct ev_loop *loop_lo = 0; -\& ev_embed embed; -\& -\& // see if there is a chance of getting one that works -\& // (remember that a flags value of 0 means autodetection) -\& loop_lo = ev_embeddable_backends () & ev_recommended_backends () -\& ? ev_loop_new (ev_embeddable_backends () & ev_recommended_backends ()) -\& : 0; -\& -\& // if we got one, then embed it, otherwise default to loop_hi -\& if (loop_lo) -\& { -\& ev_embed_init (&embed, 0, loop_lo); -\& ev_embed_start (loop_hi, &embed); -\& } -\& else -\& loop_lo = loop_hi; -.Ve -.PP -Example: Check if kqueue is available but not recommended and create -a kqueue backend for use with sockets (which usually work with any -kqueue implementation). Store the kqueue/socket\-only event loop in -\&\f(CW\*(C`loop_socket\*(C'\fR. (One might optionally use \f(CW\*(C`EVFLAG_NOENV\*(C'\fR, too). -.PP -.Vb 3 -\& struct ev_loop *loop = ev_default_init (0); -\& struct ev_loop *loop_socket = 0; -\& ev_embed embed; -\& -\& if (ev_supported_backends () & ~ev_recommended_backends () & EVBACKEND_KQUEUE) -\& if ((loop_socket = ev_loop_new (EVBACKEND_KQUEUE)) -\& { -\& ev_embed_init (&embed, 0, loop_socket); -\& ev_embed_start (loop, &embed); -\& } -\& -\& if (!loop_socket) -\& loop_socket = loop; -\& -\& // now use loop_socket for all sockets, and loop for everything else -.Ve -.ie n .SS """ev_fork"" \- the audacity to resume the event loop after a fork" -.el .SS "\f(CWev_fork\fP \- the audacity to resume the event loop after a fork" -.IX Subsection "ev_fork - the audacity to resume the event loop after a fork" -Fork watchers are called when a \f(CW\*(C`fork ()\*(C'\fR was detected (usually because -whoever is a good citizen cared to tell libev about it by calling -\&\f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR). The invocation is done before the -event loop blocks next and before \f(CW\*(C`ev_check\*(C'\fR watchers are being called, -and only in the child after the fork. If whoever good citizen calling -\&\f(CW\*(C`ev_default_fork\*(C'\fR cheats and calls it in the wrong process, the fork -handlers will be invoked, too, of course. -.PP -\fIThe special problem of life after fork \- how is it possible?\fR -.IX Subsection "The special problem of life after fork - how is it possible?" -.PP -Most uses of \f(CW\*(C`fork()\*(C'\fR consist of forking, then some simple calls to set -up/change the process environment, followed by a call to \f(CW\*(C`exec()\*(C'\fR. This -sequence should be handled by libev without any problems. -.PP -This changes when the application actually wants to do event handling -in the child, or both parent in child, in effect \*(L"continuing\*(R" after the -fork. -.PP -The default mode of operation (for libev, with application help to detect -forks) is to duplicate all the state in the child, as would be expected -when \fIeither\fR the parent \fIor\fR the child process continues. -.PP -When both processes want to continue using libev, then this is usually the -wrong result. In that case, usually one process (typically the parent) is -supposed to continue with all watchers in place as before, while the other -process typically wants to start fresh, i.e. without any active watchers. -.PP -The cleanest and most efficient way to achieve that with libev is to -simply create a new event loop, which of course will be \*(L"empty\*(R", and -use that for new watchers. This has the advantage of not touching more -memory than necessary, and thus avoiding the copy-on-write, and the -disadvantage of having to use multiple event loops (which do not support -signal watchers). -.PP -When this is not possible, or you want to use the default loop for -other reasons, then in the process that wants to start \*(L"fresh\*(R", call -\&\f(CW\*(C`ev_loop_destroy (EV_DEFAULT)\*(C'\fR followed by \f(CW\*(C`ev_default_loop (...)\*(C'\fR. -Destroying the default loop will \*(L"orphan\*(R" (not stop) all registered -watchers, so you have to be careful not to execute code that modifies -those watchers. Note also that in that case, you have to re-register any -signal watchers. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_fork_init (ev_fork *, callback)" 4 -.IX Item "ev_fork_init (ev_fork *, callback)" -Initialises and configures the fork watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_fork_set\*(C'\fR macro, but using it is utterly pointless, -really. -.ie n .SS """ev_cleanup"" \- even the best things end" -.el .SS "\f(CWev_cleanup\fP \- even the best things end" -.IX Subsection "ev_cleanup - even the best things end" -Cleanup watchers are called just before the event loop is being destroyed -by a call to \f(CW\*(C`ev_loop_destroy\*(C'\fR. -.PP -While there is no guarantee that the event loop gets destroyed, cleanup -watchers provide a convenient method to install cleanup hooks for your -program, worker threads and so on \- you just to make sure to destroy the -loop when you want them to be invoked. -.PP -Cleanup watchers are invoked in the same way as any other watcher. Unlike -all other watchers, they do not keep a reference to the event loop (which -makes a lot of sense if you think about it). Like all other watchers, you -can call libev functions in the callback, except \f(CW\*(C`ev_cleanup_start\*(C'\fR. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_cleanup_init (ev_cleanup *, callback)" 4 -.IX Item "ev_cleanup_init (ev_cleanup *, callback)" -Initialises and configures the cleanup watcher \- it has no parameters of -any kind. There is a \f(CW\*(C`ev_cleanup_set\*(C'\fR macro, but using it is utterly -pointless, I assure you. -.PP -Example: Register an atexit handler to destroy the default loop, so any -cleanup functions are called. -.PP -.Vb 5 -\& static void -\& program_exits (void) -\& { -\& ev_loop_destroy (EV_DEFAULT_UC); -\& } -\& -\& ... -\& atexit (program_exits); -.Ve -.ie n .SS """ev_async"" \- how to wake up an event loop" -.el .SS "\f(CWev_async\fP \- how to wake up an event loop" -.IX Subsection "ev_async - how to wake up an event loop" -In general, you cannot use an \f(CW\*(C`ev_loop\*(C'\fR from multiple threads or other -asynchronous sources such as signal handlers (as opposed to multiple event -loops \- those are of course safe to use in different threads). -.PP -Sometimes, however, you need to wake up an event loop you do not control, -for example because it belongs to another thread. This is what \f(CW\*(C`ev_async\*(C'\fR -watchers do: as long as the \f(CW\*(C`ev_async\*(C'\fR watcher is active, you can signal -it by calling \f(CW\*(C`ev_async_send\*(C'\fR, which is thread\- and signal safe. -.PP -This functionality is very similar to \f(CW\*(C`ev_signal\*(C'\fR watchers, as signals, -too, are asynchronous in nature, and signals, too, will be compressed -(i.e. the number of callback invocations may be less than the number of -\&\f(CW\*(C`ev_async_sent\*(C'\fR calls). In fact, you could use signal watchers as a kind -of \*(L"global async watchers\*(R" by using a watcher on an otherwise unused -signal, and \f(CW\*(C`ev_feed_signal\*(C'\fR to signal this watcher from another thread, -even without knowing which loop owns the signal. -.PP -Unlike \f(CW\*(C`ev_signal\*(C'\fR watchers, \f(CW\*(C`ev_async\*(C'\fR works with any event loop, not -just the default loop. -.PP -\fIQueueing\fR -.IX Subsection "Queueing" -.PP -\&\f(CW\*(C`ev_async\*(C'\fR does not support queueing of data in any way. The reason -is that the author does not know of a simple (or any) algorithm for a -multiple-writer-single-reader queue that works in all cases and doesn't -need elaborate support such as pthreads or unportable memory access -semantics. -.PP -That means that if you want to queue data, you have to provide your own -queue. But at least I can tell you how to implement locking around your -queue: -.IP "queueing from a signal handler context" 4 -.IX Item "queueing from a signal handler context" -To implement race-free queueing, you simply add to the queue in the signal -handler but you block the signal handler in the watcher callback. Here is -an example that does that for some fictitious \s-1SIGUSR1\s0 handler: -.Sp -.Vb 1 -\& static ev_async mysig; -\& -\& static void -\& sigusr1_handler (void) -\& { -\& sometype data; -\& -\& // no locking etc. -\& queue_put (data); -\& ev_async_send (EV_DEFAULT_ &mysig); -\& } -\& -\& static void -\& mysig_cb (EV_P_ ev_async *w, int revents) -\& { -\& sometype data; -\& sigset_t block, prev; -\& -\& sigemptyset (&block); -\& sigaddset (&block, SIGUSR1); -\& sigprocmask (SIG_BLOCK, &block, &prev); -\& -\& while (queue_get (&data)) -\& process (data); -\& -\& if (sigismember (&prev, SIGUSR1) -\& sigprocmask (SIG_UNBLOCK, &block, 0); -\& } -.Ve -.Sp -(Note: pthreads in theory requires you to use \f(CW\*(C`pthread_setmask\*(C'\fR -instead of \f(CW\*(C`sigprocmask\*(C'\fR when you use threads, but libev doesn't do it -either...). -.IP "queueing from a thread context" 4 -.IX Item "queueing from a thread context" -The strategy for threads is different, as you cannot (easily) block -threads but you can easily preempt them, so to queue safely you need to -employ a traditional mutex lock, such as in this pthread example: -.Sp -.Vb 2 -\& static ev_async mysig; -\& static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER; -\& -\& static void -\& otherthread (void) -\& { -\& // only need to lock the actual queueing operation -\& pthread_mutex_lock (&mymutex); -\& queue_put (data); -\& pthread_mutex_unlock (&mymutex); -\& -\& ev_async_send (EV_DEFAULT_ &mysig); -\& } -\& -\& static void -\& mysig_cb (EV_P_ ev_async *w, int revents) -\& { -\& pthread_mutex_lock (&mymutex); -\& -\& while (queue_get (&data)) -\& process (data); -\& -\& pthread_mutex_unlock (&mymutex); -\& } -.Ve -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_async_init (ev_async *, callback)" 4 -.IX Item "ev_async_init (ev_async *, callback)" -Initialises and configures the async watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_async_set\*(C'\fR macro, but using it is utterly pointless, -trust me. -.IP "ev_async_send (loop, ev_async *)" 4 -.IX Item "ev_async_send (loop, ev_async *)" -Sends/signals/activates the given \f(CW\*(C`ev_async\*(C'\fR watcher, that is, feeds -an \f(CW\*(C`EV_ASYNC\*(C'\fR event on the watcher into the event loop, and instantly -returns. -.Sp -Unlike \f(CW\*(C`ev_feed_event\*(C'\fR, this call is safe to do from other threads, -signal or similar contexts (see the discussion of \f(CW\*(C`EV_ATOMIC_T\*(C'\fR in the -embedding section below on what exactly this means). -.Sp -Note that, as with other watchers in libev, multiple events might get -compressed into a single callback invocation (another way to look at this -is that \f(CW\*(C`ev_async\*(C'\fR watchers are level-triggered, set on \f(CW\*(C`ev_async_send\*(C'\fR, -reset when the event loop detects that). -.Sp -This call incurs the overhead of a system call only once per event loop -iteration, so while the overhead might be noticeable, it doesn't apply to -repeated calls to \f(CW\*(C`ev_async_send\*(C'\fR for the same event loop. -.IP "bool = ev_async_pending (ev_async *)" 4 -.IX Item "bool = ev_async_pending (ev_async *)" -Returns a non-zero value when \f(CW\*(C`ev_async_send\*(C'\fR has been called on the -watcher but the event has not yet been processed (or even noted) by the -event loop. -.Sp -\&\f(CW\*(C`ev_async_send\*(C'\fR sets a flag in the watcher and wakes up the loop. When -the loop iterates next and checks for the watcher to have become active, -it will reset the flag again. \f(CW\*(C`ev_async_pending\*(C'\fR can be used to very -quickly check whether invoking the loop might be a good idea. -.Sp -Not that this does \fInot\fR check whether the watcher itself is pending, -only whether it has been requested to make this watcher pending: there -is a time window between the event loop checking and resetting the async -notification, and the callback being invoked. -.SH "OTHER FUNCTIONS" -.IX Header "OTHER FUNCTIONS" -There are some other functions of possible interest. Described. Here. Now. -.IP "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" 4 -.IX Item "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" -This function combines a simple timer and an I/O watcher, calls your -callback on whichever event happens first and automatically stops both -watchers. This is useful if you want to wait for a single event on an fd -or timeout without having to allocate/configure/start/stop/free one or -more watchers yourself. -.Sp -If \f(CW\*(C`fd\*(C'\fR is less than 0, then no I/O watcher will be started and the -\&\f(CW\*(C`events\*(C'\fR argument is being ignored. Otherwise, an \f(CW\*(C`ev_io\*(C'\fR watcher for -the given \f(CW\*(C`fd\*(C'\fR and \f(CW\*(C`events\*(C'\fR set will be created and started. -.Sp -If \f(CW\*(C`timeout\*(C'\fR is less than 0, then no timeout watcher will be -started. Otherwise an \f(CW\*(C`ev_timer\*(C'\fR watcher with after = \f(CW\*(C`timeout\*(C'\fR (and -repeat = 0) will be started. \f(CW0\fR is a valid timeout. -.Sp -The callback has the type \f(CW\*(C`void (*cb)(int revents, void *arg)\*(C'\fR and is -passed an \f(CW\*(C`revents\*(C'\fR set like normal event callbacks (a combination of -\&\f(CW\*(C`EV_ERROR\*(C'\fR, \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or \f(CW\*(C`EV_TIMER\*(C'\fR) and the \f(CW\*(C`arg\*(C'\fR -value passed to \f(CW\*(C`ev_once\*(C'\fR. Note that it is possible to receive \fIboth\fR -a timeout and an io event at the same time \- you probably should give io -events precedence. -.Sp -Example: wait up to ten seconds for data to appear on \s-1STDIN_FILENO\s0. -.Sp -.Vb 7 -\& static void stdin_ready (int revents, void *arg) -\& { -\& if (revents & EV_READ) -\& /* stdin might have data for us, joy! */; -\& else if (revents & EV_TIMER) -\& /* doh, nothing entered */; -\& } -\& -\& ev_once (STDIN_FILENO, EV_READ, 10., stdin_ready, 0); -.Ve -.IP "ev_feed_fd_event (loop, int fd, int revents)" 4 -.IX Item "ev_feed_fd_event (loop, int fd, int revents)" -Feed an event on the given fd, as if a file descriptor backend detected -the given events it. -.IP "ev_feed_signal_event (loop, int signum)" 4 -.IX Item "ev_feed_signal_event (loop, int signum)" -Feed an event as if the given signal occurred. See also \f(CW\*(C`ev_feed_signal\*(C'\fR, -which is async-safe. -.SH "COMMON OR USEFUL IDIOMS (OR BOTH)" -.IX Header "COMMON OR USEFUL IDIOMS (OR BOTH)" -This section explains some common idioms that are not immediately -obvious. Note that examples are sprinkled over the whole manual, and this -section only contains stuff that wouldn't fit anywhere else. -.SS "\s-1ASSOCIATING\s0 \s-1CUSTOM\s0 \s-1DATA\s0 \s-1WITH\s0 A \s-1WATCHER\s0" -.IX Subsection "ASSOCIATING CUSTOM DATA WITH A WATCHER" -Each watcher has, by default, a \f(CW\*(C`void *data\*(C'\fR member that you can read -or modify at any time: libev will completely ignore it. This can be used -to associate arbitrary data with your watcher. If you need more data and -don't want to allocate memory separately and store a pointer to it in that -data member, you can also \*(L"subclass\*(R" the watcher type and provide your own -data: -.PP -.Vb 7 -\& struct my_io -\& { -\& ev_io io; -\& int otherfd; -\& void *somedata; -\& struct whatever *mostinteresting; -\& }; -\& -\& ... -\& struct my_io w; -\& ev_io_init (&w.io, my_cb, fd, EV_READ); -.Ve -.PP -And since your callback will be called with a pointer to the watcher, you -can cast it back to your own type: -.PP -.Vb 5 -\& static void my_cb (struct ev_loop *loop, ev_io *w_, int revents) -\& { -\& struct my_io *w = (struct my_io *)w_; -\& ... -\& } -.Ve -.PP -More interesting and less C\-conformant ways of casting your callback -function type instead have been omitted. -.SS "\s-1BUILDING\s0 \s-1YOUR\s0 \s-1OWN\s0 \s-1COMPOSITE\s0 \s-1WATCHERS\s0" -.IX Subsection "BUILDING YOUR OWN COMPOSITE WATCHERS" -Another common scenario is to use some data structure with multiple -embedded watchers, in effect creating your own watcher that combines -multiple libev event sources into one \*(L"super-watcher\*(R": -.PP -.Vb 6 -\& struct my_biggy -\& { -\& int some_data; -\& ev_timer t1; -\& ev_timer t2; -\& } -.Ve -.PP -In this case getting the pointer to \f(CW\*(C`my_biggy\*(C'\fR is a bit more -complicated: Either you store the address of your \f(CW\*(C`my_biggy\*(C'\fR struct in -the \f(CW\*(C`data\*(C'\fR member of the watcher (for woozies or \*(C+ coders), or you need -to use some pointer arithmetic using \f(CW\*(C`offsetof\*(C'\fR inside your watchers (for -real programmers): -.PP -.Vb 1 -\& #include -\& -\& static void -\& t1_cb (EV_P_ ev_timer *w, int revents) -\& { -\& struct my_biggy big = (struct my_biggy *) -\& (((char *)w) \- offsetof (struct my_biggy, t1)); -\& } -\& -\& static void -\& t2_cb (EV_P_ ev_timer *w, int revents) -\& { -\& struct my_biggy big = (struct my_biggy *) -\& (((char *)w) \- offsetof (struct my_biggy, t2)); -\& } -.Ve -.SS "\s-1MODEL/NESTED\s0 \s-1EVENT\s0 \s-1LOOP\s0 \s-1INVOCATIONS\s0 \s-1AND\s0 \s-1EXIT\s0 \s-1CONDITIONS\s0" -.IX Subsection "MODEL/NESTED EVENT LOOP INVOCATIONS AND EXIT CONDITIONS" -Often (especially in \s-1GUI\s0 toolkits) there are places where you have -\&\fImodal\fR interaction, which is most easily implemented by recursively -invoking \f(CW\*(C`ev_run\*(C'\fR. -.PP -This brings the problem of exiting \- a callback might want to finish the -main \f(CW\*(C`ev_run\*(C'\fR call, but not the nested one (e.g. user clicked \*(L"Quit\*(R", but -a modal \*(L"Are you sure?\*(R" dialog is still waiting), or just the nested one -and not the main one (e.g. user clocked \*(L"Ok\*(R" in a modal dialog), or some -other combination: In these cases, \f(CW\*(C`ev_break\*(C'\fR will not work alone. -.PP -The solution is to maintain \*(L"break this loop\*(R" variable for each \f(CW\*(C`ev_run\*(C'\fR -invocation, and use a loop around \f(CW\*(C`ev_run\*(C'\fR until the condition is -triggered, using \f(CW\*(C`EVRUN_ONCE\*(C'\fR: -.PP -.Vb 2 -\& // main loop -\& int exit_main_loop = 0; -\& -\& while (!exit_main_loop) -\& ev_run (EV_DEFAULT_ EVRUN_ONCE); -\& -\& // in a model watcher -\& int exit_nested_loop = 0; -\& -\& while (!exit_nested_loop) -\& ev_run (EV_A_ EVRUN_ONCE); -.Ve -.PP -To exit from any of these loops, just set the corresponding exit variable: -.PP -.Vb 2 -\& // exit modal loop -\& exit_nested_loop = 1; -\& -\& // exit main program, after modal loop is finished -\& exit_main_loop = 1; -\& -\& // exit both -\& exit_main_loop = exit_nested_loop = 1; -.Ve -.SS "\s-1THREAD\s0 \s-1LOCKING\s0 \s-1EXAMPLE\s0" -.IX Subsection "THREAD LOCKING EXAMPLE" -Here is a fictitious example of how to run an event loop in a different -thread from where callbacks are being invoked and watchers are -created/added/removed. -.PP -For a real-world example, see the \f(CW\*(C`EV::Loop::Async\*(C'\fR perl module, -which uses exactly this technique (which is suited for many high-level -languages). -.PP -The example uses a pthread mutex to protect the loop data, a condition -variable to wait for callback invocations, an async watcher to notify the -event loop thread and an unspecified mechanism to wake up the main thread. -.PP -First, you need to associate some data with the event loop: -.PP -.Vb 6 -\& typedef struct { -\& mutex_t lock; /* global loop lock */ -\& ev_async async_w; -\& thread_t tid; -\& cond_t invoke_cv; -\& } userdata; -\& -\& void prepare_loop (EV_P) -\& { -\& // for simplicity, we use a static userdata struct. -\& static userdata u; -\& -\& ev_async_init (&u\->async_w, async_cb); -\& ev_async_start (EV_A_ &u\->async_w); -\& -\& pthread_mutex_init (&u\->lock, 0); -\& pthread_cond_init (&u\->invoke_cv, 0); -\& -\& // now associate this with the loop -\& ev_set_userdata (EV_A_ u); -\& ev_set_invoke_pending_cb (EV_A_ l_invoke); -\& ev_set_loop_release_cb (EV_A_ l_release, l_acquire); -\& -\& // then create the thread running ev_run -\& pthread_create (&u\->tid, 0, l_run, EV_A); -\& } -.Ve -.PP -The callback for the \f(CW\*(C`ev_async\*(C'\fR watcher does nothing: the watcher is used -solely to wake up the event loop so it takes notice of any new watchers -that might have been added: -.PP -.Vb 5 -\& static void -\& async_cb (EV_P_ ev_async *w, int revents) -\& { -\& // just used for the side effects -\& } -.Ve -.PP -The \f(CW\*(C`l_release\*(C'\fR and \f(CW\*(C`l_acquire\*(C'\fR callbacks simply unlock/lock the mutex -protecting the loop data, respectively. -.PP -.Vb 6 -\& static void -\& l_release (EV_P) -\& { -\& userdata *u = ev_userdata (EV_A); -\& pthread_mutex_unlock (&u\->lock); -\& } -\& -\& static void -\& l_acquire (EV_P) -\& { -\& userdata *u = ev_userdata (EV_A); -\& pthread_mutex_lock (&u\->lock); -\& } -.Ve -.PP -The event loop thread first acquires the mutex, and then jumps straight -into \f(CW\*(C`ev_run\*(C'\fR: -.PP -.Vb 4 -\& void * -\& l_run (void *thr_arg) -\& { -\& struct ev_loop *loop = (struct ev_loop *)thr_arg; -\& -\& l_acquire (EV_A); -\& pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0); -\& ev_run (EV_A_ 0); -\& l_release (EV_A); -\& -\& return 0; -\& } -.Ve -.PP -Instead of invoking all pending watchers, the \f(CW\*(C`l_invoke\*(C'\fR callback will -signal the main thread via some unspecified mechanism (signals? pipe -writes? \f(CW\*(C`Async::Interrupt\*(C'\fR?) and then waits until all pending watchers -have been called (in a while loop because a) spurious wakeups are possible -and b) skipping inter-thread-communication when there are no pending -watchers is very beneficial): -.PP -.Vb 4 -\& static void -\& l_invoke (EV_P) -\& { -\& userdata *u = ev_userdata (EV_A); -\& -\& while (ev_pending_count (EV_A)) -\& { -\& wake_up_other_thread_in_some_magic_or_not_so_magic_way (); -\& pthread_cond_wait (&u\->invoke_cv, &u\->lock); -\& } -\& } -.Ve -.PP -Now, whenever the main thread gets told to invoke pending watchers, it -will grab the lock, call \f(CW\*(C`ev_invoke_pending\*(C'\fR and then signal the loop -thread to continue: -.PP -.Vb 4 -\& static void -\& real_invoke_pending (EV_P) -\& { -\& userdata *u = ev_userdata (EV_A); -\& -\& pthread_mutex_lock (&u\->lock); -\& ev_invoke_pending (EV_A); -\& pthread_cond_signal (&u\->invoke_cv); -\& pthread_mutex_unlock (&u\->lock); -\& } -.Ve -.PP -Whenever you want to start/stop a watcher or do other modifications to an -event loop, you will now have to lock: -.PP -.Vb 2 -\& ev_timer timeout_watcher; -\& userdata *u = ev_userdata (EV_A); -\& -\& ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.); -\& -\& pthread_mutex_lock (&u\->lock); -\& ev_timer_start (EV_A_ &timeout_watcher); -\& ev_async_send (EV_A_ &u\->async_w); -\& pthread_mutex_unlock (&u\->lock); -.Ve -.PP -Note that sending the \f(CW\*(C`ev_async\*(C'\fR watcher is required because otherwise -an event loop currently blocking in the kernel will have no knowledge -about the newly added timer. By waking up the loop it will pick up any new -watchers in the next event loop iteration. -.SS "\s-1THREADS\s0, \s-1COROUTINES\s0, \s-1CONTINUATIONS\s0, \s-1QUEUES\s0... \s-1INSTEAD\s0 \s-1OF\s0 \s-1CALLBACKS\s0" -.IX Subsection "THREADS, COROUTINES, CONTINUATIONS, QUEUES... INSTEAD OF CALLBACKS" -While the overhead of a callback that e.g. schedules a thread is small, it -is still an overhead. If you embed libev, and your main usage is with some -kind of threads or coroutines, you might want to customise libev so that -doesn't need callbacks anymore. -.PP -Imagine you have coroutines that you can switch to using a function -\&\f(CW\*(C`switch_to (coro)\*(C'\fR, that libev runs in a coroutine called \f(CW\*(C`libev_coro\*(C'\fR -and that due to some magic, the currently active coroutine is stored in a -global called \f(CW\*(C`current_coro\*(C'\fR. Then you can build your own \*(L"wait for libev -event\*(R" primitive by changing \f(CW\*(C`EV_CB_DECLARE\*(C'\fR and \f(CW\*(C`EV_CB_INVOKE\*(C'\fR (note -the differing \f(CW\*(C`;\*(C'\fR conventions): -.PP -.Vb 2 -\& #define EV_CB_DECLARE(type) struct my_coro *cb; -\& #define EV_CB_INVOKE(watcher) switch_to ((watcher)\->cb) -.Ve -.PP -That means instead of having a C callback function, you store the -coroutine to switch to in each watcher, and instead of having libev call -your callback, you instead have it switch to that coroutine. -.PP -A coroutine might now wait for an event with a function called -\&\f(CW\*(C`wait_for_event\*(C'\fR. (the watcher needs to be started, as always, but it doesn't -matter when, or whether the watcher is active or not when this function is -called): -.PP -.Vb 6 -\& void -\& wait_for_event (ev_watcher *w) -\& { -\& ev_cb_set (w) = current_coro; -\& switch_to (libev_coro); -\& } -.Ve -.PP -That basically suspends the coroutine inside \f(CW\*(C`wait_for_event\*(C'\fR and -continues the libev coroutine, which, when appropriate, switches back to -this or any other coroutine. I am sure if you sue this your own :) -.PP -You can do similar tricks if you have, say, threads with an event queue \- -instead of storing a coroutine, you store the queue object and instead of -switching to a coroutine, you push the watcher onto the queue and notify -any waiters. -.PP -To embed libev, see \s-1EMBEDDING\s0, but in short, it's easiest to create two -files, \fImy_ev.h\fR and \fImy_ev.c\fR that include the respective libev files: -.PP -.Vb 4 -\& // my_ev.h -\& #define EV_CB_DECLARE(type) struct my_coro *cb; -\& #define EV_CB_INVOKE(watcher) switch_to ((watcher)\->cb); -\& #include "../libev/ev.h" -\& -\& // my_ev.c -\& #define EV_H "my_ev.h" -\& #include "../libev/ev.c" -.Ve -.PP -And then use \fImy_ev.h\fR when you would normally use \fIev.h\fR, and compile -\&\fImy_ev.c\fR into your project. When properly specifying include paths, you -can even use \fIev.h\fR as header file name directly. -.SH "LIBEVENT EMULATION" -.IX Header "LIBEVENT EMULATION" -Libev offers a compatibility emulation layer for libevent. It cannot -emulate the internals of libevent, so here are some usage hints: -.IP "\(bu" 4 -Only the libevent\-1.4.1\-beta \s-1API\s0 is being emulated. -.Sp -This was the newest libevent version available when libev was implemented, -and is still mostly unchanged in 2010. -.IP "\(bu" 4 -Use it by including , as usual. -.IP "\(bu" 4 -The following members are fully supported: ev_base, ev_callback, -ev_arg, ev_fd, ev_res, ev_events. -.IP "\(bu" 4 -Avoid using ev_flags and the EVLIST_*\-macros, while it is -maintained by libev, it does not work exactly the same way as in libevent (consider -it a private \s-1API\s0). -.IP "\(bu" 4 -Priorities are not currently supported. Initialising priorities -will fail and all watchers will have the same priority, even though there -is an ev_pri field. -.IP "\(bu" 4 -In libevent, the last base created gets the signals, in libev, the -base that registered the signal gets the signals. -.IP "\(bu" 4 -Other members are not supported. -.IP "\(bu" 4 -The libev emulation is \fInot\fR \s-1ABI\s0 compatible to libevent, you need -to use the libev header file and library. -.SH "\*(C+ SUPPORT" -.IX Header " SUPPORT" -Libev comes with some simplistic wrapper classes for \*(C+ that mainly allow -you to use some convenience methods to start/stop watchers and also change -the callback model to a model using method callbacks on objects. -.PP -To use it, -.PP -.Vb 1 -\& #include -.Ve -.PP -This automatically includes \fIev.h\fR and puts all of its definitions (many -of them macros) into the global namespace. All \*(C+ specific things are -put into the \f(CW\*(C`ev\*(C'\fR namespace. It should support all the same embedding -options as \fIev.h\fR, most notably \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. -.PP -Care has been taken to keep the overhead low. The only data member the \*(C+ -classes add (compared to plain C\-style watchers) is the event loop pointer -that the watcher is associated with (or no additional members at all if -you disable \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR when embedding libev). -.PP -Currently, functions, static and non-static member functions and classes -with \f(CW\*(C`operator ()\*(C'\fR can be used as callbacks. Other types should be easy -to add as long as they only need one additional pointer for context. If -you need support for other types of functors please contact the author -(preferably after implementing it). -.PP -Here is a list of things available in the \f(CW\*(C`ev\*(C'\fR namespace: -.ie n .IP """ev::READ"", ""ev::WRITE"" etc." 4 -.el .IP "\f(CWev::READ\fR, \f(CWev::WRITE\fR etc." 4 -.IX Item "ev::READ, ev::WRITE etc." -These are just enum values with the same values as the \f(CW\*(C`EV_READ\*(C'\fR etc. -macros from \fIev.h\fR. -.ie n .IP """ev::tstamp"", ""ev::now""" 4 -.el .IP "\f(CWev::tstamp\fR, \f(CWev::now\fR" 4 -.IX Item "ev::tstamp, ev::now" -Aliases to the same types/functions as with the \f(CW\*(C`ev_\*(C'\fR prefix. -.ie n .IP """ev::io"", ""ev::timer"", ""ev::periodic"", ""ev::idle"", ""ev::sig"" etc." 4 -.el .IP "\f(CWev::io\fR, \f(CWev::timer\fR, \f(CWev::periodic\fR, \f(CWev::idle\fR, \f(CWev::sig\fR etc." 4 -.IX Item "ev::io, ev::timer, ev::periodic, ev::idle, ev::sig etc." -For each \f(CW\*(C`ev_TYPE\*(C'\fR watcher in \fIev.h\fR there is a corresponding class of -the same name in the \f(CW\*(C`ev\*(C'\fR namespace, with the exception of \f(CW\*(C`ev_signal\*(C'\fR -which is called \f(CW\*(C`ev::sig\*(C'\fR to avoid clashes with the \f(CW\*(C`signal\*(C'\fR macro -defines by many implementations. -.Sp -All of those classes have these methods: -.RS 4 -.IP "ev::TYPE::TYPE ()" 4 -.IX Item "ev::TYPE::TYPE ()" -.PD 0 -.IP "ev::TYPE::TYPE (loop)" 4 -.IX Item "ev::TYPE::TYPE (loop)" -.IP "ev::TYPE::~TYPE" 4 -.IX Item "ev::TYPE::~TYPE" -.PD -The constructor (optionally) takes an event loop to associate the watcher -with. If it is omitted, it will use \f(CW\*(C`EV_DEFAULT\*(C'\fR. -.Sp -The constructor calls \f(CW\*(C`ev_init\*(C'\fR for you, which means you have to call the -\&\f(CW\*(C`set\*(C'\fR method before starting it. -.Sp -It will not set a callback, however: You have to call the templated \f(CW\*(C`set\*(C'\fR -method to set a callback before you can start the watcher. -.Sp -(The reason why you have to use a method is a limitation in \*(C+ which does -not allow explicit template arguments for constructors). -.Sp -The destructor automatically stops the watcher if it is active. -.IP "w\->set (object *)" 4 -.IX Item "w->set (object *)" -This method sets the callback method to call. The method has to have a -signature of \f(CW\*(C`void (*)(ev_TYPE &, int)\*(C'\fR, it receives the watcher as -first argument and the \f(CW\*(C`revents\*(C'\fR as second. The object must be given as -parameter and is stored in the \f(CW\*(C`data\*(C'\fR member of the watcher. -.Sp -This method synthesizes efficient thunking code to call your method from -the C callback that libev requires. If your compiler can inline your -callback (i.e. it is visible to it at the place of the \f(CW\*(C`set\*(C'\fR call and -your compiler is good :), then the method will be fully inlined into the -thunking function, making it as fast as a direct C callback. -.Sp -Example: simple class declaration and watcher initialisation -.Sp -.Vb 4 -\& struct myclass -\& { -\& void io_cb (ev::io &w, int revents) { } -\& } -\& -\& myclass obj; -\& ev::io iow; -\& iow.set (&obj); -.Ve -.IP "w\->set (object *)" 4 -.IX Item "w->set (object *)" -This is a variation of a method callback \- leaving out the method to call -will default the method to \f(CW\*(C`operator ()\*(C'\fR, which makes it possible to use -functor objects without having to manually specify the \f(CW\*(C`operator ()\*(C'\fR all -the time. Incidentally, you can then also leave out the template argument -list. -.Sp -The \f(CW\*(C`operator ()\*(C'\fR method prototype must be \f(CW\*(C`void operator ()(watcher &w, -int revents)\*(C'\fR. -.Sp -See the method\-\f(CW\*(C`set\*(C'\fR above for more details. -.Sp -Example: use a functor object as callback. -.Sp -.Vb 7 -\& struct myfunctor -\& { -\& void operator() (ev::io &w, int revents) -\& { -\& ... -\& } -\& } -\& -\& myfunctor f; -\& -\& ev::io w; -\& w.set (&f); -.Ve -.IP "w\->set (void *data = 0)" 4 -.IX Item "w->set (void *data = 0)" -Also sets a callback, but uses a static method or plain function as -callback. The optional \f(CW\*(C`data\*(C'\fR argument will be stored in the watcher's -\&\f(CW\*(C`data\*(C'\fR member and is free for you to use. -.Sp -The prototype of the \f(CW\*(C`function\*(C'\fR must be \f(CW\*(C`void (*)(ev::TYPE &w, int)\*(C'\fR. -.Sp -See the method\-\f(CW\*(C`set\*(C'\fR above for more details. -.Sp -Example: Use a plain function as callback. -.Sp -.Vb 2 -\& static void io_cb (ev::io &w, int revents) { } -\& iow.set (); -.Ve -.IP "w\->set (loop)" 4 -.IX Item "w->set (loop)" -Associates a different \f(CW\*(C`struct ev_loop\*(C'\fR with this watcher. You can only -do this when the watcher is inactive (and not pending either). -.IP "w\->set ([arguments])" 4 -.IX Item "w->set ([arguments])" -Basically the same as \f(CW\*(C`ev_TYPE_set\*(C'\fR, with the same arguments. Either this -method or a suitable start method must be called at least once. Unlike the -C counterpart, an active watcher gets automatically stopped and restarted -when reconfiguring it with this method. -.IP "w\->start ()" 4 -.IX Item "w->start ()" -Starts the watcher. Note that there is no \f(CW\*(C`loop\*(C'\fR argument, as the -constructor already stores the event loop. -.IP "w\->start ([arguments])" 4 -.IX Item "w->start ([arguments])" -Instead of calling \f(CW\*(C`set\*(C'\fR and \f(CW\*(C`start\*(C'\fR methods separately, it is often -convenient to wrap them in one call. Uses the same type of arguments as -the configure \f(CW\*(C`set\*(C'\fR method of the watcher. -.IP "w\->stop ()" 4 -.IX Item "w->stop ()" -Stops the watcher if it is active. Again, no \f(CW\*(C`loop\*(C'\fR argument. -.ie n .IP "w\->again () (""ev::timer"", ""ev::periodic"" only)" 4 -.el .IP "w\->again () (\f(CWev::timer\fR, \f(CWev::periodic\fR only)" 4 -.IX Item "w->again () (ev::timer, ev::periodic only)" -For \f(CW\*(C`ev::timer\*(C'\fR and \f(CW\*(C`ev::periodic\*(C'\fR, this invokes the corresponding -\&\f(CW\*(C`ev_TYPE_again\*(C'\fR function. -.ie n .IP "w\->sweep () (""ev::embed"" only)" 4 -.el .IP "w\->sweep () (\f(CWev::embed\fR only)" 4 -.IX Item "w->sweep () (ev::embed only)" -Invokes \f(CW\*(C`ev_embed_sweep\*(C'\fR. -.ie n .IP "w\->update () (""ev::stat"" only)" 4 -.el .IP "w\->update () (\f(CWev::stat\fR only)" 4 -.IX Item "w->update () (ev::stat only)" -Invokes \f(CW\*(C`ev_stat_stat\*(C'\fR. -.RE -.RS 4 -.RE -.PP -Example: Define a class with two I/O and idle watchers, start the I/O -watchers in the constructor. -.PP -.Vb 5 -\& class myclass -\& { -\& ev::io io ; void io_cb (ev::io &w, int revents); -\& ev::io2 io2 ; void io2_cb (ev::io &w, int revents); -\& ev::idle idle; void idle_cb (ev::idle &w, int revents); -\& -\& myclass (int fd) -\& { -\& io .set (this); -\& io2 .set (this); -\& idle.set (this); -\& -\& io.set (fd, ev::WRITE); // configure the watcher -\& io.start (); // start it whenever convenient -\& -\& io2.start (fd, ev::READ); // set + start in one call -\& } -\& }; -.Ve -.SH "OTHER LANGUAGE BINDINGS" -.IX Header "OTHER LANGUAGE BINDINGS" -Libev does not offer other language bindings itself, but bindings for a -number of languages exist in the form of third-party packages. If you know -any interesting language binding in addition to the ones listed here, drop -me a note. -.IP "Perl" 4 -.IX Item "Perl" -The \s-1EV\s0 module implements the full libev \s-1API\s0 and is actually used to test -libev. \s-1EV\s0 is developed together with libev. Apart from the \s-1EV\s0 core module, -there are additional modules that implement libev-compatible interfaces -to \f(CW\*(C`libadns\*(C'\fR (\f(CW\*(C`EV::ADNS\*(C'\fR, but \f(CW\*(C`AnyEvent::DNS\*(C'\fR is preferred nowadays), -\&\f(CW\*(C`Net::SNMP\*(C'\fR (\f(CW\*(C`Net::SNMP::EV\*(C'\fR) and the \f(CW\*(C`libglib\*(C'\fR event core (\f(CW\*(C`Glib::EV\*(C'\fR -and \f(CW\*(C`EV::Glib\*(C'\fR). -.Sp -It can be found and installed via \s-1CPAN\s0, its homepage is at -. -.IP "Python" 4 -.IX Item "Python" -Python bindings can be found at . It -seems to be quite complete and well-documented. -.IP "Ruby" 4 -.IX Item "Ruby" -Tony Arcieri has written a ruby extension that offers access to a subset -of the libev \s-1API\s0 and adds file handle abstractions, asynchronous \s-1DNS\s0 and -more on top of it. It can be found via gem servers. Its homepage is at -. -.Sp -Roger Pack reports that using the link order \f(CW\*(C`\-lws2_32 \-lmsvcrt\-ruby\-190\*(C'\fR -makes rev work even on mingw. -.IP "Haskell" 4 -.IX Item "Haskell" -A haskell binding to libev is available at -. -.IP "D" 4 -.IX Item "D" -Leandro Lucarella has written a D language binding (\fIev.d\fR) for libev, to -be found at . -.IP "Ocaml" 4 -.IX Item "Ocaml" -Erkki Seppala has written Ocaml bindings for libev, to be found at -. -.IP "Lua" 4 -.IX Item "Lua" -Brian Maher has written a partial interface to libev for lua (at the -time of this writing, only \f(CW\*(C`ev_io\*(C'\fR and \f(CW\*(C`ev_timer\*(C'\fR), to be found at -. -.SH "MACRO MAGIC" -.IX Header "MACRO MAGIC" -Libev can be compiled with a variety of options, the most fundamental -of which is \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. This option determines whether (most) -functions and callbacks have an initial \f(CW\*(C`struct ev_loop *\*(C'\fR argument. -.PP -To make it easier to write programs that cope with either variant, the -following macros are defined: -.ie n .IP """EV_A"", ""EV_A_""" 4 -.el .IP "\f(CWEV_A\fR, \f(CWEV_A_\fR" 4 -.IX Item "EV_A, EV_A_" -This provides the loop \fIargument\fR for functions, if one is required (\*(L"ev -loop argument\*(R"). The \f(CW\*(C`EV_A\*(C'\fR form is used when this is the sole argument, -\&\f(CW\*(C`EV_A_\*(C'\fR is used when other arguments are following. Example: -.Sp -.Vb 3 -\& ev_unref (EV_A); -\& ev_timer_add (EV_A_ watcher); -\& ev_run (EV_A_ 0); -.Ve -.Sp -It assumes the variable \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR is in scope, -which is often provided by the following macro. -.ie n .IP """EV_P"", ""EV_P_""" 4 -.el .IP "\f(CWEV_P\fR, \f(CWEV_P_\fR" 4 -.IX Item "EV_P, EV_P_" -This provides the loop \fIparameter\fR for functions, if one is required (\*(L"ev -loop parameter\*(R"). The \f(CW\*(C`EV_P\*(C'\fR form is used when this is the sole parameter, -\&\f(CW\*(C`EV_P_\*(C'\fR is used when other parameters are following. Example: -.Sp -.Vb 2 -\& // this is how ev_unref is being declared -\& static void ev_unref (EV_P); -\& -\& // this is how you can declare your typical callback -\& static void cb (EV_P_ ev_timer *w, int revents) -.Ve -.Sp -It declares a parameter \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR, quite -suitable for use with \f(CW\*(C`EV_A\*(C'\fR. -.ie n .IP """EV_DEFAULT"", ""EV_DEFAULT_""" 4 -.el .IP "\f(CWEV_DEFAULT\fR, \f(CWEV_DEFAULT_\fR" 4 -.IX Item "EV_DEFAULT, EV_DEFAULT_" -Similar to the other two macros, this gives you the value of the default -loop, if multiple loops are supported (\*(L"ev loop default\*(R"). -.ie n .IP """EV_DEFAULT_UC"", ""EV_DEFAULT_UC_""" 4 -.el .IP "\f(CWEV_DEFAULT_UC\fR, \f(CWEV_DEFAULT_UC_\fR" 4 -.IX Item "EV_DEFAULT_UC, EV_DEFAULT_UC_" -Usage identical to \f(CW\*(C`EV_DEFAULT\*(C'\fR and \f(CW\*(C`EV_DEFAULT_\*(C'\fR, but requires that the -default loop has been initialised (\f(CW\*(C`UC\*(C'\fR == unchecked). Their behaviour -is undefined when the default loop has not been initialised by a previous -execution of \f(CW\*(C`EV_DEFAULT\*(C'\fR, \f(CW\*(C`EV_DEFAULT_\*(C'\fR or \f(CW\*(C`ev_default_init (...)\*(C'\fR. -.Sp -It is often prudent to use \f(CW\*(C`EV_DEFAULT\*(C'\fR when initialising the first -watcher in a function but use \f(CW\*(C`EV_DEFAULT_UC\*(C'\fR afterwards. -.PP -Example: Declare and initialise a check watcher, utilising the above -macros so it will work regardless of whether multiple loops are supported -or not. -.PP -.Vb 5 -\& static void -\& check_cb (EV_P_ ev_timer *w, int revents) -\& { -\& ev_check_stop (EV_A_ w); -\& } -\& -\& ev_check check; -\& ev_check_init (&check, check_cb); -\& ev_check_start (EV_DEFAULT_ &check); -\& ev_run (EV_DEFAULT_ 0); -.Ve -.SH "EMBEDDING" -.IX Header "EMBEDDING" -Libev can (and often is) directly embedded into host -applications. Examples of applications that embed it include the Deliantra -Game Server, the \s-1EV\s0 perl module, the \s-1GNU\s0 Virtual Private Ethernet (gvpe) -and rxvt-unicode. -.PP -The goal is to enable you to just copy the necessary files into your -source directory without having to change even a single line in them, so -you can easily upgrade by simply copying (or having a checked-out copy of -libev somewhere in your source tree). -.SS "\s-1FILESETS\s0" -.IX Subsection "FILESETS" -Depending on what features you need you need to include one or more sets of files -in your application. -.PP -\fI\s-1CORE\s0 \s-1EVENT\s0 \s-1LOOP\s0\fR -.IX Subsection "CORE EVENT LOOP" -.PP -To include only the libev core (all the \f(CW\*(C`ev_*\*(C'\fR functions), with manual -configuration (no autoconf): -.PP -.Vb 2 -\& #define EV_STANDALONE 1 -\& #include "ev.c" -.Ve -.PP -This will automatically include \fIev.h\fR, too, and should be done in a -single C source file only to provide the function implementations. To use -it, do the same for \fIev.h\fR in all files wishing to use this \s-1API\s0 (best -done by writing a wrapper around \fIev.h\fR that you can include instead and -where you can put other configuration options): -.PP -.Vb 2 -\& #define EV_STANDALONE 1 -\& #include "ev.h" -.Ve -.PP -Both header files and implementation files can be compiled with a \*(C+ -compiler (at least, that's a stated goal, and breakage will be treated -as a bug). -.PP -You need the following files in your source tree, or in a directory -in your include path (e.g. in libev/ when using \-Ilibev): -.PP -.Vb 4 -\& ev.h -\& ev.c -\& ev_vars.h -\& ev_wrap.h -\& -\& ev_win32.c required on win32 platforms only -\& -\& ev_select.c only when select backend is enabled (which is enabled by default) -\& ev_poll.c only when poll backend is enabled (disabled by default) -\& ev_epoll.c only when the epoll backend is enabled (disabled by default) -\& ev_kqueue.c only when the kqueue backend is enabled (disabled by default) -\& ev_port.c only when the solaris port backend is enabled (disabled by default) -.Ve -.PP -\&\fIev.c\fR includes the backend files directly when enabled, so you only need -to compile this single file. -.PP -\fI\s-1LIBEVENT\s0 \s-1COMPATIBILITY\s0 \s-1API\s0\fR -.IX Subsection "LIBEVENT COMPATIBILITY API" -.PP -To include the libevent compatibility \s-1API\s0, also include: -.PP -.Vb 1 -\& #include "event.c" -.Ve -.PP -in the file including \fIev.c\fR, and: -.PP -.Vb 1 -\& #include "event.h" -.Ve -.PP -in the files that want to use the libevent \s-1API\s0. This also includes \fIev.h\fR. -.PP -You need the following additional files for this: -.PP -.Vb 2 -\& event.h -\& event.c -.Ve -.PP -\fI\s-1AUTOCONF\s0 \s-1SUPPORT\s0\fR -.IX Subsection "AUTOCONF SUPPORT" -.PP -Instead of using \f(CW\*(C`EV_STANDALONE=1\*(C'\fR and providing your configuration in -whatever way you want, you can also \f(CW\*(C`m4_include([libev.m4])\*(C'\fR in your -\&\fIconfigure.ac\fR and leave \f(CW\*(C`EV_STANDALONE\*(C'\fR undefined. \fIev.c\fR will then -include \fIconfig.h\fR and configure itself accordingly. -.PP -For this of course you need the m4 file: -.PP -.Vb 1 -\& libev.m4 -.Ve -.SS "\s-1PREPROCESSOR\s0 \s-1SYMBOLS/MACROS\s0" -.IX Subsection "PREPROCESSOR SYMBOLS/MACROS" -Libev can be configured via a variety of preprocessor symbols you have to -define before including (or compiling) any of its files. The default in -the absence of autoconf is documented for every option. -.PP -Symbols marked with \*(L"(h)\*(R" do not change the \s-1ABI\s0, and can have different -values when compiling libev vs. including \fIev.h\fR, so it is permissible -to redefine them before including \fIev.h\fR without breaking compatibility -to a compiled library. All other symbols change the \s-1ABI\s0, which means all -users of libev and the libev code itself must be compiled with compatible -settings. -.IP "\s-1EV_COMPAT3\s0 (h)" 4 -.IX Item "EV_COMPAT3 (h)" -Backwards compatibility is a major concern for libev. This is why this -release of libev comes with wrappers for the functions and symbols that -have been renamed between libev version 3 and 4. -.Sp -You can disable these wrappers (to test compatibility with future -versions) by defining \f(CW\*(C`EV_COMPAT3\*(C'\fR to \f(CW0\fR when compiling your -sources. This has the additional advantage that you can drop the \f(CW\*(C`struct\*(C'\fR -from \f(CW\*(C`struct ev_loop\*(C'\fR declarations, as libev will provide an \f(CW\*(C`ev_loop\*(C'\fR -typedef in that case. -.Sp -In some future version, the default for \f(CW\*(C`EV_COMPAT3\*(C'\fR will become \f(CW0\fR, -and in some even more future version the compatibility code will be -removed completely. -.IP "\s-1EV_STANDALONE\s0 (h)" 4 -.IX Item "EV_STANDALONE (h)" -Must always be \f(CW1\fR if you do not use autoconf configuration, which -keeps libev from including \fIconfig.h\fR, and it also defines dummy -implementations for some libevent functions (such as logging, which is not -supported). It will also not define any of the structs usually found in -\&\fIevent.h\fR that are not directly supported by the libev core alone. -.Sp -In standalone mode, libev will still try to automatically deduce the -configuration, but has to be more conservative. -.IP "\s-1EV_USE_MONOTONIC\s0" 4 -.IX Item "EV_USE_MONOTONIC" -If defined to be \f(CW1\fR, libev will try to detect the availability of the -monotonic clock option at both compile time and runtime. Otherwise no -use of the monotonic clock option will be attempted. If you enable this, -you usually have to link against librt or something similar. Enabling it -when the functionality isn't available is safe, though, although you have -to make sure you link against any libraries where the \f(CW\*(C`clock_gettime\*(C'\fR -function is hiding in (often \fI\-lrt\fR). See also \f(CW\*(C`EV_USE_CLOCK_SYSCALL\*(C'\fR. -.IP "\s-1EV_USE_REALTIME\s0" 4 -.IX Item "EV_USE_REALTIME" -If defined to be \f(CW1\fR, libev will try to detect the availability of the -real-time clock option at compile time (and assume its availability -at runtime if successful). Otherwise no use of the real-time clock -option will be attempted. This effectively replaces \f(CW\*(C`gettimeofday\*(C'\fR -by \f(CW\*(C`clock_get (CLOCK_REALTIME, ...)\*(C'\fR and will not normally affect -correctness. See the note about libraries in the description of -\&\f(CW\*(C`EV_USE_MONOTONIC\*(C'\fR, though. Defaults to the opposite value of -\&\f(CW\*(C`EV_USE_CLOCK_SYSCALL\*(C'\fR. -.IP "\s-1EV_USE_CLOCK_SYSCALL\s0" 4 -.IX Item "EV_USE_CLOCK_SYSCALL" -If defined to be \f(CW1\fR, libev will try to use a direct syscall instead -of calling the system-provided \f(CW\*(C`clock_gettime\*(C'\fR function. This option -exists because on GNU/Linux, \f(CW\*(C`clock_gettime\*(C'\fR is in \f(CW\*(C`librt\*(C'\fR, but \f(CW\*(C`librt\*(C'\fR -unconditionally pulls in \f(CW\*(C`libpthread\*(C'\fR, slowing down single-threaded -programs needlessly. Using a direct syscall is slightly slower (in -theory), because no optimised vdso implementation can be used, but avoids -the pthread dependency. Defaults to \f(CW1\fR on GNU/Linux with glibc 2.x or -higher, as it simplifies linking (no need for \f(CW\*(C`\-lrt\*(C'\fR). -.IP "\s-1EV_USE_NANOSLEEP\s0" 4 -.IX Item "EV_USE_NANOSLEEP" -If defined to be \f(CW1\fR, libev will assume that \f(CW\*(C`nanosleep ()\*(C'\fR is available -and will use it for delays. Otherwise it will use \f(CW\*(C`select ()\*(C'\fR. -.IP "\s-1EV_USE_EVENTFD\s0" 4 -.IX Item "EV_USE_EVENTFD" -If defined to be \f(CW1\fR, then libev will assume that \f(CW\*(C`eventfd ()\*(C'\fR is -available and will probe for kernel support at runtime. This will improve -\&\f(CW\*(C`ev_signal\*(C'\fR and \f(CW\*(C`ev_async\*(C'\fR performance and reduce resource consumption. -If undefined, it will be enabled if the headers indicate GNU/Linux + Glibc -2.7 or newer, otherwise disabled. -.IP "\s-1EV_USE_SELECT\s0" 4 -.IX Item "EV_USE_SELECT" -If undefined or defined to be \f(CW1\fR, libev will compile in support for the -\&\f(CW\*(C`select\*(C'\fR(2) backend. No attempt at auto-detection will be done: if no -other method takes over, select will be it. Otherwise the select backend -will not be compiled in. -.IP "\s-1EV_SELECT_USE_FD_SET\s0" 4 -.IX Item "EV_SELECT_USE_FD_SET" -If defined to \f(CW1\fR, then the select backend will use the system \f(CW\*(C`fd_set\*(C'\fR -structure. This is useful if libev doesn't compile due to a missing -\&\f(CW\*(C`NFDBITS\*(C'\fR or \f(CW\*(C`fd_mask\*(C'\fR definition or it mis-guesses the bitset layout -on exotic systems. This usually limits the range of file descriptors to -some low limit such as 1024 or might have other limitations (winsocket -only allows 64 sockets). The \f(CW\*(C`FD_SETSIZE\*(C'\fR macro, set before compilation, -configures the maximum size of the \f(CW\*(C`fd_set\*(C'\fR. -.IP "\s-1EV_SELECT_IS_WINSOCKET\s0" 4 -.IX Item "EV_SELECT_IS_WINSOCKET" -When defined to \f(CW1\fR, the select backend will assume that -select/socket/connect etc. don't understand file descriptors but -wants osf handles on win32 (this is the case when the select to -be used is the winsock select). This means that it will call -\&\f(CW\*(C`_get_osfhandle\*(C'\fR on the fd to convert it to an \s-1OS\s0 handle. Otherwise, -it is assumed that all these functions actually work on fds, even -on win32. Should not be defined on non\-win32 platforms. -.IP "\s-1EV_FD_TO_WIN32_HANDLE\s0(fd)" 4 -.IX Item "EV_FD_TO_WIN32_HANDLE(fd)" -If \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR is enabled, then libev needs a way to map -file descriptors to socket handles. When not defining this symbol (the -default), then libev will call \f(CW\*(C`_get_osfhandle\*(C'\fR, which is usually -correct. In some cases, programs use their own file descriptor management, -in which case they can provide this function to map fds to socket handles. -.IP "\s-1EV_WIN32_HANDLE_TO_FD\s0(handle)" 4 -.IX Item "EV_WIN32_HANDLE_TO_FD(handle)" -If \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR then libev maps handles to file descriptors -using the standard \f(CW\*(C`_open_osfhandle\*(C'\fR function. For programs implementing -their own fd to handle mapping, overwriting this function makes it easier -to do so. This can be done by defining this macro to an appropriate value. -.IP "\s-1EV_WIN32_CLOSE_FD\s0(fd)" 4 -.IX Item "EV_WIN32_CLOSE_FD(fd)" -If programs implement their own fd to handle mapping on win32, then this -macro can be used to override the \f(CW\*(C`close\*(C'\fR function, useful to unregister -file descriptors again. Note that the replacement function has to close -the underlying \s-1OS\s0 handle. -.IP "\s-1EV_USE_POLL\s0" 4 -.IX Item "EV_USE_POLL" -If defined to be \f(CW1\fR, libev will compile in support for the \f(CW\*(C`poll\*(C'\fR(2) -backend. Otherwise it will be enabled on non\-win32 platforms. It -takes precedence over select. -.IP "\s-1EV_USE_EPOLL\s0" 4 -.IX Item "EV_USE_EPOLL" -If defined to be \f(CW1\fR, libev will compile in support for the Linux -\&\f(CW\*(C`epoll\*(C'\fR(7) backend. Its availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for GNU/Linux systems. If undefined, it will be enabled if the -headers indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled. -.IP "\s-1EV_USE_KQUEUE\s0" 4 -.IX Item "EV_USE_KQUEUE" -If defined to be \f(CW1\fR, libev will compile in support for the \s-1BSD\s0 style -\&\f(CW\*(C`kqueue\*(C'\fR(2) backend. Its actual availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for \s-1BSD\s0 and BSD-like systems, although on most BSDs kqueue only -supports some types of fds correctly (the only platform we found that -supports ptys for example was NetBSD), so kqueue might be compiled in, but -not be used unless explicitly requested. The best way to use it is to find -out whether kqueue supports your type of fd properly and use an embedded -kqueue loop. -.IP "\s-1EV_USE_PORT\s0" 4 -.IX Item "EV_USE_PORT" -If defined to be \f(CW1\fR, libev will compile in support for the Solaris -10 port style backend. Its availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for Solaris 10 systems. -.IP "\s-1EV_USE_DEVPOLL\s0" 4 -.IX Item "EV_USE_DEVPOLL" -Reserved for future expansion, works like the \s-1USE\s0 symbols above. -.IP "\s-1EV_USE_INOTIFY\s0" 4 -.IX Item "EV_USE_INOTIFY" -If defined to be \f(CW1\fR, libev will compile in support for the Linux inotify -interface to speed up \f(CW\*(C`ev_stat\*(C'\fR watchers. Its actual availability will -be detected at runtime. If undefined, it will be enabled if the headers -indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled. -.IP "\s-1EV_ATOMIC_T\s0" 4 -.IX Item "EV_ATOMIC_T" -Libev requires an integer type (suitable for storing \f(CW0\fR or \f(CW1\fR) whose -access is atomic with respect to other threads or signal contexts. No such -type is easily found in the C language, so you can provide your own type -that you know is safe for your purposes. It is used both for signal handler \*(L"locking\*(R" -as well as for signal and thread safety in \f(CW\*(C`ev_async\*(C'\fR watchers. -.Sp -In the absence of this define, libev will use \f(CW\*(C`sig_atomic_t volatile\*(C'\fR -(from \fIsignal.h\fR), which is usually good enough on most platforms. -.IP "\s-1EV_H\s0 (h)" 4 -.IX Item "EV_H (h)" -The name of the \fIev.h\fR header file used to include it. The default if -undefined is \f(CW"ev.h"\fR in \fIevent.h\fR, \fIev.c\fR and \fIev++.h\fR. This can be -used to virtually rename the \fIev.h\fR header file in case of conflicts. -.IP "\s-1EV_CONFIG_H\s0 (h)" 4 -.IX Item "EV_CONFIG_H (h)" -If \f(CW\*(C`EV_STANDALONE\*(C'\fR isn't \f(CW1\fR, this variable can be used to override -\&\fIev.c\fR's idea of where to find the \fIconfig.h\fR file, similarly to -\&\f(CW\*(C`EV_H\*(C'\fR, above. -.IP "\s-1EV_EVENT_H\s0 (h)" 4 -.IX Item "EV_EVENT_H (h)" -Similarly to \f(CW\*(C`EV_H\*(C'\fR, this macro can be used to override \fIevent.c\fR's idea -of how the \fIevent.h\fR header can be found, the default is \f(CW"event.h"\fR. -.IP "\s-1EV_PROTOTYPES\s0 (h)" 4 -.IX Item "EV_PROTOTYPES (h)" -If defined to be \f(CW0\fR, then \fIev.h\fR will not define any function -prototypes, but still define all the structs and other symbols. This is -occasionally useful if you want to provide your own wrapper functions -around libev functions. -.IP "\s-1EV_MULTIPLICITY\s0" 4 -.IX Item "EV_MULTIPLICITY" -If undefined or defined to \f(CW1\fR, then all event-loop-specific functions -will have the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument, and you can create -additional independent event loops. Otherwise there will be no support -for multiple event loops and there is no first event loop pointer -argument. Instead, all functions act on the single default loop. -.IP "\s-1EV_MINPRI\s0" 4 -.IX Item "EV_MINPRI" -.PD 0 -.IP "\s-1EV_MAXPRI\s0" 4 -.IX Item "EV_MAXPRI" -.PD -The range of allowed priorities. \f(CW\*(C`EV_MINPRI\*(C'\fR must be smaller or equal to -\&\f(CW\*(C`EV_MAXPRI\*(C'\fR, but otherwise there are no non-obvious limitations. You can -provide for more priorities by overriding those symbols (usually defined -to be \f(CW\*(C`\-2\*(C'\fR and \f(CW2\fR, respectively). -.Sp -When doing priority-based operations, libev usually has to linearly search -all the priorities, so having many of them (hundreds) uses a lot of space -and time, so using the defaults of five priorities (\-2 .. +2) is usually -fine. -.Sp -If your embedding application does not need any priorities, defining these -both to \f(CW0\fR will save some memory and \s-1CPU\s0. -.IP "\s-1EV_PERIODIC_ENABLE\s0, \s-1EV_IDLE_ENABLE\s0, \s-1EV_EMBED_ENABLE\s0, \s-1EV_STAT_ENABLE\s0, \s-1EV_PREPARE_ENABLE\s0, \s-1EV_CHECK_ENABLE\s0, \s-1EV_FORK_ENABLE\s0, \s-1EV_SIGNAL_ENABLE\s0, \s-1EV_ASYNC_ENABLE\s0, \s-1EV_CHILD_ENABLE\s0." 4 -.IX Item "EV_PERIODIC_ENABLE, EV_IDLE_ENABLE, EV_EMBED_ENABLE, EV_STAT_ENABLE, EV_PREPARE_ENABLE, EV_CHECK_ENABLE, EV_FORK_ENABLE, EV_SIGNAL_ENABLE, EV_ASYNC_ENABLE, EV_CHILD_ENABLE." -If undefined or defined to be \f(CW1\fR (and the platform supports it), then -the respective watcher type is supported. If defined to be \f(CW0\fR, then it -is not. Disabling watcher types mainly saves code size. -.IP "\s-1EV_FEATURES\s0" 4 -.IX Item "EV_FEATURES" -If you need to shave off some kilobytes of code at the expense of some -speed (but with the full \s-1API\s0), you can define this symbol to request -certain subsets of functionality. The default is to enable all features -that can be enabled on the platform. -.Sp -A typical way to use this symbol is to define it to \f(CW0\fR (or to a bitset -with some broad features you want) and then selectively re-enable -additional parts you want, for example if you want everything minimal, -but multiple event loop support, async and child watchers and the poll -backend, use this: -.Sp -.Vb 5 -\& #define EV_FEATURES 0 -\& #define EV_MULTIPLICITY 1 -\& #define EV_USE_POLL 1 -\& #define EV_CHILD_ENABLE 1 -\& #define EV_ASYNC_ENABLE 1 -.Ve -.Sp -The actual value is a bitset, it can be a combination of the following -values: -.RS 4 -.ie n .IP "1 \- faster/larger code" 4 -.el .IP "\f(CW1\fR \- faster/larger code" 4 -.IX Item "1 - faster/larger code" -Use larger code to speed up some operations. -.Sp -Currently this is used to override some inlining decisions (enlarging the -code size by roughly 30% on amd64). -.Sp -When optimising for size, use of compiler flags such as \f(CW\*(C`\-Os\*(C'\fR with -gcc is recommended, as well as \f(CW\*(C`\-DNDEBUG\*(C'\fR, as libev contains a number of -assertions. -.ie n .IP "2 \- faster/larger data structures" 4 -.el .IP "\f(CW2\fR \- faster/larger data structures" 4 -.IX Item "2 - faster/larger data structures" -Replaces the small 2\-heap for timer management by a faster 4\-heap, larger -hash table sizes and so on. This will usually further increase code size -and can additionally have an effect on the size of data structures at -runtime. -.ie n .IP "4 \- full \s-1API\s0 configuration" 4 -.el .IP "\f(CW4\fR \- full \s-1API\s0 configuration" 4 -.IX Item "4 - full API configuration" -This enables priorities (sets \f(CW\*(C`EV_MAXPRI\*(C'\fR=2 and \f(CW\*(C`EV_MINPRI\*(C'\fR=\-2), and -enables multiplicity (\f(CW\*(C`EV_MULTIPLICITY\*(C'\fR=1). -.ie n .IP "8 \- full \s-1API\s0" 4 -.el .IP "\f(CW8\fR \- full \s-1API\s0" 4 -.IX Item "8 - full API" -This enables a lot of the \*(L"lesser used\*(R" \s-1API\s0 functions. See \f(CW\*(C`ev.h\*(C'\fR for -details on which parts of the \s-1API\s0 are still available without this -feature, and do not complain if this subset changes over time. -.ie n .IP "16 \- enable all optional watcher types" 4 -.el .IP "\f(CW16\fR \- enable all optional watcher types" 4 -.IX Item "16 - enable all optional watcher types" -Enables all optional watcher types. If you want to selectively enable -only some watcher types other than I/O and timers (e.g. prepare, -embed, async, child...) you can enable them manually by defining -\&\f(CW\*(C`EV_watchertype_ENABLE\*(C'\fR to \f(CW1\fR instead. -.ie n .IP "32 \- enable all backends" 4 -.el .IP "\f(CW32\fR \- enable all backends" 4 -.IX Item "32 - enable all backends" -This enables all backends \- without this feature, you need to enable at -least one backend manually (\f(CW\*(C`EV_USE_SELECT\*(C'\fR is a good choice). -.ie n .IP "64 \- enable OS-specific ""helper"" APIs" 4 -.el .IP "\f(CW64\fR \- enable OS-specific ``helper'' APIs" 4 -.IX Item "64 - enable OS-specific helper APIs" -Enable inotify, eventfd, signalfd and similar OS-specific helper APIs by -default. -.RE -.RS 4 -.Sp -Compiling with \f(CW\*(C`gcc \-Os \-DEV_STANDALONE \-DEV_USE_EPOLL=1 \-DEV_FEATURES=0\*(C'\fR -reduces the compiled size of libev from 24.7Kb code/2.8Kb data to 6.5Kb -code/0.3Kb data on my GNU/Linux amd64 system, while still giving you I/O -watchers, timers and monotonic clock support. -.Sp -With an intelligent-enough linker (gcc+binutils are intelligent enough -when you use \f(CW\*(C`\-Wl,\-\-gc\-sections \-ffunction\-sections\*(C'\fR) functions unused by -your program might be left out as well \- a binary starting a timer and an -I/O watcher then might come out at only 5Kb. -.RE -.IP "\s-1EV_AVOID_STDIO\s0" 4 -.IX Item "EV_AVOID_STDIO" -If this is set to \f(CW1\fR at compiletime, then libev will avoid using stdio -functions (printf, scanf, perror etc.). This will increase the code size -somewhat, but if your program doesn't otherwise depend on stdio and your -libc allows it, this avoids linking in the stdio library which is quite -big. -.Sp -Note that error messages might become less precise when this option is -enabled. -.IP "\s-1EV_NSIG\s0" 4 -.IX Item "EV_NSIG" -The highest supported signal number, +1 (or, the number of -signals): Normally, libev tries to deduce the maximum number of signals -automatically, but sometimes this fails, in which case it can be -specified. Also, using a lower number than detected (\f(CW32\fR should be -good for about any system in existence) can save some memory, as libev -statically allocates some 12\-24 bytes per signal number. -.IP "\s-1EV_PID_HASHSIZE\s0" 4 -.IX Item "EV_PID_HASHSIZE" -\&\f(CW\*(C`ev_child\*(C'\fR watchers use a small hash table to distribute workload by -pid. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_FEATURES\*(C'\fR disabled), -usually more than enough. If you need to manage thousands of children you -might want to increase this value (\fImust\fR be a power of two). -.IP "\s-1EV_INOTIFY_HASHSIZE\s0" 4 -.IX Item "EV_INOTIFY_HASHSIZE" -\&\f(CW\*(C`ev_stat\*(C'\fR watchers use a small hash table to distribute workload by -inotify watch id. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_FEATURES\*(C'\fR -disabled), usually more than enough. If you need to manage thousands of -\&\f(CW\*(C`ev_stat\*(C'\fR watchers you might want to increase this value (\fImust\fR be a -power of two). -.IP "\s-1EV_USE_4HEAP\s0" 4 -.IX Item "EV_USE_4HEAP" -Heaps are not very cache-efficient. To improve the cache-efficiency of the -timer and periodics heaps, libev uses a 4\-heap when this symbol is defined -to \f(CW1\fR. The 4\-heap uses more complicated (longer) code but has noticeably -faster performance with many (thousands) of watchers. -.Sp -The default is \f(CW1\fR, unless \f(CW\*(C`EV_FEATURES\*(C'\fR overrides it, in which case it -will be \f(CW0\fR. -.IP "\s-1EV_HEAP_CACHE_AT\s0" 4 -.IX Item "EV_HEAP_CACHE_AT" -Heaps are not very cache-efficient. To improve the cache-efficiency of the -timer and periodics heaps, libev can cache the timestamp (\fIat\fR) within -the heap structure (selected by defining \f(CW\*(C`EV_HEAP_CACHE_AT\*(C'\fR to \f(CW1\fR), -which uses 8\-12 bytes more per watcher and a few hundred bytes more code, -but avoids random read accesses on heap changes. This improves performance -noticeably with many (hundreds) of watchers. -.Sp -The default is \f(CW1\fR, unless \f(CW\*(C`EV_FEATURES\*(C'\fR overrides it, in which case it -will be \f(CW0\fR. -.IP "\s-1EV_VERIFY\s0" 4 -.IX Item "EV_VERIFY" -Controls how much internal verification (see \f(CW\*(C`ev_verify ()\*(C'\fR) will -be done: If set to \f(CW0\fR, no internal verification code will be compiled -in. If set to \f(CW1\fR, then verification code will be compiled in, but not -called. If set to \f(CW2\fR, then the internal verification code will be -called once per loop, which can slow down libev. If set to \f(CW3\fR, then the -verification code will be called very frequently, which will slow down -libev considerably. -.Sp -The default is \f(CW1\fR, unless \f(CW\*(C`EV_FEATURES\*(C'\fR overrides it, in which case it -will be \f(CW0\fR. -.IP "\s-1EV_COMMON\s0" 4 -.IX Item "EV_COMMON" -By default, all watchers have a \f(CW\*(C`void *data\*(C'\fR member. By redefining -this macro to something else you can include more and other types of -members. You have to define it each time you include one of the files, -though, and it must be identical each time. -.Sp -For example, the perl \s-1EV\s0 module uses something like this: -.Sp -.Vb 3 -\& #define EV_COMMON \e -\& SV *self; /* contains this struct */ \e -\& SV *cb_sv, *fh /* note no trailing ";" */ -.Ve -.IP "\s-1EV_CB_DECLARE\s0 (type)" 4 -.IX Item "EV_CB_DECLARE (type)" -.PD 0 -.IP "\s-1EV_CB_INVOKE\s0 (watcher, revents)" 4 -.IX Item "EV_CB_INVOKE (watcher, revents)" -.IP "ev_set_cb (ev, cb)" 4 -.IX Item "ev_set_cb (ev, cb)" -.PD -Can be used to change the callback member declaration in each watcher, -and the way callbacks are invoked and set. Must expand to a struct member -definition and a statement, respectively. See the \fIev.h\fR header file for -their default definitions. One possible use for overriding these is to -avoid the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument in all cases, or to use -method calls instead of plain function calls in \*(C+. -.SS "\s-1EXPORTED\s0 \s-1API\s0 \s-1SYMBOLS\s0" -.IX Subsection "EXPORTED API SYMBOLS" -If you need to re-export the \s-1API\s0 (e.g. via a \s-1DLL\s0) and you need a list of -exported symbols, you can use the provided \fISymbol.*\fR files which list -all public symbols, one per line: -.PP -.Vb 2 -\& Symbols.ev for libev proper -\& Symbols.event for the libevent emulation -.Ve -.PP -This can also be used to rename all public symbols to avoid clashes with -multiple versions of libev linked together (which is obviously bad in -itself, but sometimes it is inconvenient to avoid this). -.PP -A sed command like this will create wrapper \f(CW\*(C`#define\*(C'\fR's that you need to -include before including \fIev.h\fR: -.PP -.Vb 1 -\& wrap.h -.Ve -.PP -This would create a file \fIwrap.h\fR which essentially looks like this: -.PP -.Vb 4 -\& #define ev_backend myprefix_ev_backend -\& #define ev_check_start myprefix_ev_check_start -\& #define ev_check_stop myprefix_ev_check_stop -\& ... -.Ve -.SS "\s-1EXAMPLES\s0" -.IX Subsection "EXAMPLES" -For a real-world example of a program the includes libev -verbatim, you can have a look at the \s-1EV\s0 perl module -(). It has the libev files in -the \fIlibev/\fR subdirectory and includes them in the \fI\s-1EV/EVAPI\s0.h\fR (public -interface) and \fI\s-1EV\s0.xs\fR (implementation) files. Only the \fI\s-1EV\s0.xs\fR file -will be compiled. It is pretty complex because it provides its own header -file. -.PP -The usage in rxvt-unicode is simpler. It has a \fIev_cpp.h\fR header file -that everybody includes and which overrides some configure choices: -.PP -.Vb 8 -\& #define EV_FEATURES 8 -\& #define EV_USE_SELECT 1 -\& #define EV_PREPARE_ENABLE 1 -\& #define EV_IDLE_ENABLE 1 -\& #define EV_SIGNAL_ENABLE 1 -\& #define EV_CHILD_ENABLE 1 -\& #define EV_USE_STDEXCEPT 0 -\& #define EV_CONFIG_H -\& -\& #include "ev++.h" -.Ve -.PP -And a \fIev_cpp.C\fR implementation file that contains libev proper and is compiled: -.PP -.Vb 2 -\& #include "ev_cpp.h" -\& #include "ev.c" -.Ve -.SH "INTERACTION WITH OTHER PROGRAMS, LIBRARIES OR THE ENVIRONMENT" -.IX Header "INTERACTION WITH OTHER PROGRAMS, LIBRARIES OR THE ENVIRONMENT" -.SS "\s-1THREADS\s0 \s-1AND\s0 \s-1COROUTINES\s0" -.IX Subsection "THREADS AND COROUTINES" -\fI\s-1THREADS\s0\fR -.IX Subsection "THREADS" -.PP -All libev functions are reentrant and thread-safe unless explicitly -documented otherwise, but libev implements no locking itself. This means -that you can use as many loops as you want in parallel, as long as there -are no concurrent calls into any libev function with the same loop -parameter (\f(CW\*(C`ev_default_*\*(C'\fR calls have an implicit default loop parameter, -of course): libev guarantees that different event loops share no data -structures that need any locking. -.PP -Or to put it differently: calls with different loop parameters can be done -concurrently from multiple threads, calls with the same loop parameter -must be done serially (but can be done from different threads, as long as -only one thread ever is inside a call at any point in time, e.g. by using -a mutex per loop). -.PP -Specifically to support threads (and signal handlers), libev implements -so-called \f(CW\*(C`ev_async\*(C'\fR watchers, which allow some limited form of -concurrency on the same event loop, namely waking it up \*(L"from the -outside\*(R". -.PP -If you want to know which design (one loop, locking, or multiple loops -without or something else still) is best for your problem, then I cannot -help you, but here is some generic advice: -.IP "\(bu" 4 -most applications have a main thread: use the default libev loop -in that thread, or create a separate thread running only the default loop. -.Sp -This helps integrating other libraries or software modules that use libev -themselves and don't care/know about threading. -.IP "\(bu" 4 -one loop per thread is usually a good model. -.Sp -Doing this is almost never wrong, sometimes a better-performance model -exists, but it is always a good start. -.IP "\(bu" 4 -other models exist, such as the leader/follower pattern, where one -loop is handed through multiple threads in a kind of round-robin fashion. -.Sp -Choosing a model is hard \- look around, learn, know that usually you can do -better than you currently do :\-) -.IP "\(bu" 4 -often you need to talk to some other thread which blocks in the -event loop. -.Sp -\&\f(CW\*(C`ev_async\*(C'\fR watchers can be used to wake them up from other threads safely -(or from signal contexts...). -.Sp -An example use would be to communicate signals or other events that only -work in the default loop by registering the signal watcher with the -default loop and triggering an \f(CW\*(C`ev_async\*(C'\fR watcher from the default loop -watcher callback into the event loop interested in the signal. -.PP -See also \*(L"\s-1THREAD\s0 \s-1LOCKING\s0 \s-1EXAMPLE\s0\*(R". -.PP -\fI\s-1COROUTINES\s0\fR -.IX Subsection "COROUTINES" -.PP -Libev is very accommodating to coroutines (\*(L"cooperative threads\*(R"): -libev fully supports nesting calls to its functions from different -coroutines (e.g. you can call \f(CW\*(C`ev_run\*(C'\fR on the same loop from two -different coroutines, and switch freely between both coroutines running -the loop, as long as you don't confuse yourself). The only exception is -that you must not do this from \f(CW\*(C`ev_periodic\*(C'\fR reschedule callbacks. -.PP -Care has been taken to ensure that libev does not keep local state inside -\&\f(CW\*(C`ev_run\*(C'\fR, and other calls do not usually allow for coroutine switches as -they do not call any callbacks. -.SS "\s-1COMPILER\s0 \s-1WARNINGS\s0" -.IX Subsection "COMPILER WARNINGS" -Depending on your compiler and compiler settings, you might get no or a -lot of warnings when compiling libev code. Some people are apparently -scared by this. -.PP -However, these are unavoidable for many reasons. For one, each compiler -has different warnings, and each user has different tastes regarding -warning options. \*(L"Warn-free\*(R" code therefore cannot be a goal except when -targeting a specific compiler and compiler-version. -.PP -Another reason is that some compiler warnings require elaborate -workarounds, or other changes to the code that make it less clear and less -maintainable. -.PP -And of course, some compiler warnings are just plain stupid, or simply -wrong (because they don't actually warn about the condition their message -seems to warn about). For example, certain older gcc versions had some -warnings that resulted in an extreme number of false positives. These have -been fixed, but some people still insist on making code warn-free with -such buggy versions. -.PP -While libev is written to generate as few warnings as possible, -\&\*(L"warn-free\*(R" code is not a goal, and it is recommended not to build libev -with any compiler warnings enabled unless you are prepared to cope with -them (e.g. by ignoring them). Remember that warnings are just that: -warnings, not errors, or proof of bugs. -.SS "\s-1VALGRIND\s0" -.IX Subsection "VALGRIND" -Valgrind has a special section here because it is a popular tool that is -highly useful. Unfortunately, valgrind reports are very hard to interpret. -.PP -If you think you found a bug (memory leak, uninitialised data access etc.) -in libev, then check twice: If valgrind reports something like: -.PP -.Vb 3 -\& ==2274== definitely lost: 0 bytes in 0 blocks. -\& ==2274== possibly lost: 0 bytes in 0 blocks. -\& ==2274== still reachable: 256 bytes in 1 blocks. -.Ve -.PP -Then there is no memory leak, just as memory accounted to global variables -is not a memleak \- the memory is still being referenced, and didn't leak. -.PP -Similarly, under some circumstances, valgrind might report kernel bugs -as if it were a bug in libev (e.g. in realloc or in the poll backend, -although an acceptable workaround has been found here), or it might be -confused. -.PP -Keep in mind that valgrind is a very good tool, but only a tool. Don't -make it into some kind of religion. -.PP -If you are unsure about something, feel free to contact the mailing list -with the full valgrind report and an explanation on why you think this -is a bug in libev (best check the archives, too :). However, don't be -annoyed when you get a brisk \*(L"this is no bug\*(R" answer and take the chance -of learning how to interpret valgrind properly. -.PP -If you need, for some reason, empty reports from valgrind for your project -I suggest using suppression lists. -.SH "PORTABILITY NOTES" -.IX Header "PORTABILITY NOTES" -.SS "\s-1GNU/LINUX\s0 32 \s-1BIT\s0 \s-1LIMITATIONS\s0" -.IX Subsection "GNU/LINUX 32 BIT LIMITATIONS" -GNU/Linux is the only common platform that supports 64 bit file/large file -interfaces but \fIdisables\fR them by default. -.PP -That means that libev compiled in the default environment doesn't support -files larger than 2GiB or so, which mainly affects \f(CW\*(C`ev_stat\*(C'\fR watchers. -.PP -Unfortunately, many programs try to work around this GNU/Linux issue -by enabling the large file \s-1API\s0, which makes them incompatible with the -standard libev compiled for their system. -.PP -Likewise, libev cannot enable the large file \s-1API\s0 itself as this would -suddenly make it incompatible to the default compile time environment, -i.e. all programs not using special compile switches. -.SS "\s-1OS/X\s0 \s-1AND\s0 \s-1DARWIN\s0 \s-1BUGS\s0" -.IX Subsection "OS/X AND DARWIN BUGS" -The whole thing is a bug if you ask me \- basically any system interface -you touch is broken, whether it is locales, poll, kqueue or even the -OpenGL drivers. -.PP -\fI\f(CI\*(C`kqueue\*(C'\fI is buggy\fR -.IX Subsection "kqueue is buggy" -.PP -The kqueue syscall is broken in all known versions \- most versions support -only sockets, many support pipes. -.PP -Libev tries to work around this by not using \f(CW\*(C`kqueue\*(C'\fR by default on this -rotten platform, but of course you can still ask for it when creating a -loop \- embedding a socket-only kqueue loop into a select-based one is -probably going to work well. -.PP -\fI\f(CI\*(C`poll\*(C'\fI is buggy\fR -.IX Subsection "poll is buggy" -.PP -Instead of fixing \f(CW\*(C`kqueue\*(C'\fR, Apple replaced their (working) \f(CW\*(C`poll\*(C'\fR -implementation by something calling \f(CW\*(C`kqueue\*(C'\fR internally around the 10.5.6 -release, so now \f(CW\*(C`kqueue\*(C'\fR \fIand\fR \f(CW\*(C`poll\*(C'\fR are broken. -.PP -Libev tries to work around this by not using \f(CW\*(C`poll\*(C'\fR by default on -this rotten platform, but of course you can still ask for it when creating -a loop. -.PP -\fI\f(CI\*(C`select\*(C'\fI is buggy\fR -.IX Subsection "select is buggy" -.PP -All that's left is \f(CW\*(C`select\*(C'\fR, and of course Apple found a way to fuck this -one up as well: On \s-1OS/X\s0, \f(CW\*(C`select\*(C'\fR actively limits the number of file -descriptors you can pass in to 1024 \- your program suddenly crashes when -you use more. -.PP -There is an undocumented \*(L"workaround\*(R" for this \- defining -\&\f(CW\*(C`_DARWIN_UNLIMITED_SELECT\*(C'\fR, which libev tries to use, so select \fIshould\fR -work on \s-1OS/X\s0. -.SS "\s-1SOLARIS\s0 \s-1PROBLEMS\s0 \s-1AND\s0 \s-1WORKAROUNDS\s0" -.IX Subsection "SOLARIS PROBLEMS AND WORKAROUNDS" -\fI\f(CI\*(C`errno\*(C'\fI reentrancy\fR -.IX Subsection "errno reentrancy" -.PP -The default compile environment on Solaris is unfortunately so -thread-unsafe that you can't even use components/libraries compiled -without \f(CW\*(C`\-D_REENTRANT\*(C'\fR in a threaded program, which, of course, isn't -defined by default. A valid, if stupid, implementation choice. -.PP -If you want to use libev in threaded environments you have to make sure -it's compiled with \f(CW\*(C`_REENTRANT\*(C'\fR defined. -.PP -\fIEvent port backend\fR -.IX Subsection "Event port backend" -.PP -The scalable event interface for Solaris is called \*(L"event -ports\*(R". Unfortunately, this mechanism is very buggy in all major -releases. If you run into high \s-1CPU\s0 usage, your program freezes or you get -a large number of spurious wakeups, make sure you have all the relevant -and latest kernel patches applied. No, I don't know which ones, but there -are multiple ones to apply, and afterwards, event ports actually work -great. -.PP -If you can't get it to work, you can try running the program by setting -the environment variable \f(CW\*(C`LIBEV_FLAGS=3\*(C'\fR to only allow \f(CW\*(C`poll\*(C'\fR and -\&\f(CW\*(C`select\*(C'\fR backends. -.SS "\s-1AIX\s0 \s-1POLL\s0 \s-1BUG\s0" -.IX Subsection "AIX POLL BUG" -\&\s-1AIX\s0 unfortunately has a broken \f(CW\*(C`poll.h\*(C'\fR header. Libev works around -this by trying to avoid the poll backend altogether (i.e. it's not even -compiled in), which normally isn't a big problem as \f(CW\*(C`select\*(C'\fR works fine -with large bitsets on \s-1AIX\s0, and \s-1AIX\s0 is dead anyway. -.SS "\s-1WIN32\s0 \s-1PLATFORM\s0 \s-1LIMITATIONS\s0 \s-1AND\s0 \s-1WORKAROUNDS\s0" -.IX Subsection "WIN32 PLATFORM LIMITATIONS AND WORKAROUNDS" -\fIGeneral issues\fR -.IX Subsection "General issues" -.PP -Win32 doesn't support any of the standards (e.g. \s-1POSIX\s0) that libev -requires, and its I/O model is fundamentally incompatible with the \s-1POSIX\s0 -model. Libev still offers limited functionality on this platform in -the form of the \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR backend, and only supports socket -descriptors. This only applies when using Win32 natively, not when using -e.g. cygwin. Actually, it only applies to the microsofts own compilers, -as every compielr comes with a slightly differently broken/incompatible -environment. -.PP -Lifting these limitations would basically require the full -re-implementation of the I/O system. If you are into this kind of thing, -then note that glib does exactly that for you in a very portable way (note -also that glib is the slowest event library known to man). -.PP -There is no supported compilation method available on windows except -embedding it into other applications. -.PP -Sensible signal handling is officially unsupported by Microsoft \- libev -tries its best, but under most conditions, signals will simply not work. -.PP -Not a libev limitation but worth mentioning: windows apparently doesn't -accept large writes: instead of resulting in a partial write, windows will -either accept everything or return \f(CW\*(C`ENOBUFS\*(C'\fR if the buffer is too large, -so make sure you only write small amounts into your sockets (less than a -megabyte seems safe, but this apparently depends on the amount of memory -available). -.PP -Due to the many, low, and arbitrary limits on the win32 platform and -the abysmal performance of winsockets, using a large number of sockets -is not recommended (and not reasonable). If your program needs to use -more than a hundred or so sockets, then likely it needs to use a totally -different implementation for windows, as libev offers the \s-1POSIX\s0 readiness -notification model, which cannot be implemented efficiently on windows -(due to Microsoft monopoly games). -.PP -A typical way to use libev under windows is to embed it (see the embedding -section for details) and use the following \fIevwrap.h\fR header file instead -of \fIev.h\fR: -.PP -.Vb 2 -\& #define EV_STANDALONE /* keeps ev from requiring config.h */ -\& #define EV_SELECT_IS_WINSOCKET 1 /* configure libev for windows select */ -\& -\& #include "ev.h" -.Ve -.PP -And compile the following \fIevwrap.c\fR file into your project (make sure -you do \fInot\fR compile the \fIev.c\fR or any other embedded source files!): -.PP -.Vb 2 -\& #include "evwrap.h" -\& #include "ev.c" -.Ve -.PP -\fIThe winsocket \f(CI\*(C`select\*(C'\fI function\fR -.IX Subsection "The winsocket select function" -.PP -The winsocket \f(CW\*(C`select\*(C'\fR function doesn't follow \s-1POSIX\s0 in that it -requires socket \fIhandles\fR and not socket \fIfile descriptors\fR (it is -also extremely buggy). This makes select very inefficient, and also -requires a mapping from file descriptors to socket handles (the Microsoft -C runtime provides the function \f(CW\*(C`_open_osfhandle\*(C'\fR for this). See the -discussion of the \f(CW\*(C`EV_SELECT_USE_FD_SET\*(C'\fR, \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR and -\&\f(CW\*(C`EV_FD_TO_WIN32_HANDLE\*(C'\fR preprocessor symbols for more info. -.PP -The configuration for a \*(L"naked\*(R" win32 using the Microsoft runtime -libraries and raw winsocket select is: -.PP -.Vb 2 -\& #define EV_USE_SELECT 1 -\& #define EV_SELECT_IS_WINSOCKET 1 /* forces EV_SELECT_USE_FD_SET, too */ -.Ve -.PP -Note that winsockets handling of fd sets is O(n), so you can easily get a -complexity in the O(nA\*^X) range when using win32. -.PP -\fILimited number of file descriptors\fR -.IX Subsection "Limited number of file descriptors" -.PP -Windows has numerous arbitrary (and low) limits on things. -.PP -Early versions of winsocket's select only supported waiting for a maximum -of \f(CW64\fR handles (probably owning to the fact that all windows kernels -can only wait for \f(CW64\fR things at the same time internally; Microsoft -recommends spawning a chain of threads and wait for 63 handles and the -previous thread in each. Sounds great!). -.PP -Newer versions support more handles, but you need to define \f(CW\*(C`FD_SETSIZE\*(C'\fR -to some high number (e.g. \f(CW2048\fR) before compiling the winsocket select -call (which might be in libev or elsewhere, for example, perl and many -other interpreters do their own select emulation on windows). -.PP -Another limit is the number of file descriptors in the Microsoft runtime -libraries, which by default is \f(CW64\fR (there must be a hidden \fI64\fR -fetish or something like this inside Microsoft). You can increase this -by calling \f(CW\*(C`_setmaxstdio\*(C'\fR, which can increase this limit to \f(CW2048\fR -(another arbitrary limit), but is broken in many versions of the Microsoft -runtime libraries. This might get you to about \f(CW512\fR or \f(CW2048\fR sockets -(depending on windows version and/or the phase of the moon). To get more, -you need to wrap all I/O functions and provide your own fd management, but -the cost of calling select (O(nA\*^X)) will likely make this unworkable. -.SS "\s-1PORTABILITY\s0 \s-1REQUIREMENTS\s0" -.IX Subsection "PORTABILITY REQUIREMENTS" -In addition to a working ISO-C implementation and of course the -backend-specific APIs, libev relies on a few additional extensions: -.ie n .IP """void (*)(ev_watcher_type *, int revents)"" must have compatible calling conventions regardless of ""ev_watcher_type *""." 4 -.el .IP "\f(CWvoid (*)(ev_watcher_type *, int revents)\fR must have compatible calling conventions regardless of \f(CWev_watcher_type *\fR." 4 -.IX Item "void (*)(ev_watcher_type *, int revents) must have compatible calling conventions regardless of ev_watcher_type *." -Libev assumes not only that all watcher pointers have the same internal -structure (guaranteed by \s-1POSIX\s0 but not by \s-1ISO\s0 C for example), but it also -assumes that the same (machine) code can be used to call any watcher -callback: The watcher callbacks have different type signatures, but libev -calls them using an \f(CW\*(C`ev_watcher *\*(C'\fR internally. -.IP "pointer accesses must be thread-atomic" 4 -.IX Item "pointer accesses must be thread-atomic" -Accessing a pointer value must be atomic, it must both be readable and -writable in one piece \- this is the case on all current architectures. -.ie n .IP """sig_atomic_t volatile"" must be thread-atomic as well" 4 -.el .IP "\f(CWsig_atomic_t volatile\fR must be thread-atomic as well" 4 -.IX Item "sig_atomic_t volatile must be thread-atomic as well" -The type \f(CW\*(C`sig_atomic_t volatile\*(C'\fR (or whatever is defined as -\&\f(CW\*(C`EV_ATOMIC_T\*(C'\fR) must be atomic with respect to accesses from different -threads. This is not part of the specification for \f(CW\*(C`sig_atomic_t\*(C'\fR, but is -believed to be sufficiently portable. -.ie n .IP """sigprocmask"" must work in a threaded environment" 4 -.el .IP "\f(CWsigprocmask\fR must work in a threaded environment" 4 -.IX Item "sigprocmask must work in a threaded environment" -Libev uses \f(CW\*(C`sigprocmask\*(C'\fR to temporarily block signals. This is not -allowed in a threaded program (\f(CW\*(C`pthread_sigmask\*(C'\fR has to be used). Typical -pthread implementations will either allow \f(CW\*(C`sigprocmask\*(C'\fR in the \*(L"main -thread\*(R" or will block signals process-wide, both behaviours would -be compatible with libev. Interaction between \f(CW\*(C`sigprocmask\*(C'\fR and -\&\f(CW\*(C`pthread_sigmask\*(C'\fR could complicate things, however. -.Sp -The most portable way to handle signals is to block signals in all threads -except the initial one, and run the default loop in the initial thread as -well. -.ie n .IP """long"" must be large enough for common memory allocation sizes" 4 -.el .IP "\f(CWlong\fR must be large enough for common memory allocation sizes" 4 -.IX Item "long must be large enough for common memory allocation sizes" -To improve portability and simplify its \s-1API\s0, libev uses \f(CW\*(C`long\*(C'\fR internally -instead of \f(CW\*(C`size_t\*(C'\fR when allocating its data structures. On non-POSIX -systems (Microsoft...) this might be unexpectedly low, but is still at -least 31 bits everywhere, which is enough for hundreds of millions of -watchers. -.ie n .IP """double"" must hold a time value in seconds with enough accuracy" 4 -.el .IP "\f(CWdouble\fR must hold a time value in seconds with enough accuracy" 4 -.IX Item "double must hold a time value in seconds with enough accuracy" -The type \f(CW\*(C`double\*(C'\fR is used to represent timestamps. It is required to -have at least 51 bits of mantissa (and 9 bits of exponent), which is -good enough for at least into the year 4000 with millisecond accuracy -(the design goal for libev). This requirement is overfulfilled by -implementations using \s-1IEEE\s0 754, which is basically all existing ones. With -\&\s-1IEEE\s0 754 doubles, you get microsecond accuracy until at least 2200. -.PP -If you know of other additional requirements drop me a note. -.SH "ALGORITHMIC COMPLEXITIES" -.IX Header "ALGORITHMIC COMPLEXITIES" -In this section the complexities of (many of) the algorithms used inside -libev will be documented. For complexity discussions about backends see -the documentation for \f(CW\*(C`ev_default_init\*(C'\fR. -.PP -All of the following are about amortised time: If an array needs to be -extended, libev needs to realloc and move the whole array, but this -happens asymptotically rarer with higher number of elements, so O(1) might -mean that libev does a lengthy realloc operation in rare cases, but on -average it is much faster and asymptotically approaches constant time. -.IP "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" 4 -.IX Item "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" -This means that, when you have a watcher that triggers in one hour and -there are 100 watchers that would trigger before that, then inserting will -have to skip roughly seven (\f(CW\*(C`ld 100\*(C'\fR) of these watchers. -.IP "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" 4 -.IX Item "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" -That means that changing a timer costs less than removing/adding them, -as only the relative motion in the event queue has to be paid for. -.IP "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" 4 -.IX Item "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" -These just add the watcher into an array or at the head of a list. -.IP "Stopping check/prepare/idle/fork/async watchers: O(1)" 4 -.IX Item "Stopping check/prepare/idle/fork/async watchers: O(1)" -.PD 0 -.IP "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % \s-1EV_PID_HASHSIZE\s0))" 4 -.IX Item "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % EV_PID_HASHSIZE))" -.PD -These watchers are stored in lists, so they need to be walked to find the -correct watcher to remove. The lists are usually short (you don't usually -have many watchers waiting for the same fd or signal: one is typical, two -is rare). -.IP "Finding the next timer in each loop iteration: O(1)" 4 -.IX Item "Finding the next timer in each loop iteration: O(1)" -By virtue of using a binary or 4\-heap, the next timer is always found at a -fixed position in the storage array. -.IP "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" 4 -.IX Item "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" -A change means an I/O watcher gets started or stopped, which requires -libev to recalculate its status (and possibly tell the kernel, depending -on backend and whether \f(CW\*(C`ev_io_set\*(C'\fR was used). -.IP "Activating one watcher (putting it into the pending state): O(1)" 4 -.IX Item "Activating one watcher (putting it into the pending state): O(1)" -.PD 0 -.IP "Priority handling: O(number_of_priorities)" 4 -.IX Item "Priority handling: O(number_of_priorities)" -.PD -Priorities are implemented by allocating some space for each -priority. When doing priority-based operations, libev usually has to -linearly search all the priorities, but starting/stopping and activating -watchers becomes O(1) with respect to priority handling. -.IP "Sending an ev_async: O(1)" 4 -.IX Item "Sending an ev_async: O(1)" -.PD 0 -.IP "Processing ev_async_send: O(number_of_async_watchers)" 4 -.IX Item "Processing ev_async_send: O(number_of_async_watchers)" -.IP "Processing signals: O(max_signal_number)" 4 -.IX Item "Processing signals: O(max_signal_number)" -.PD -Sending involves a system call \fIiff\fR there were no other \f(CW\*(C`ev_async_send\*(C'\fR -calls in the current loop iteration. Checking for async and signal events -involves iterating over all running async watchers or all signal numbers. -.SH "PORTING FROM LIBEV 3.X TO 4.X" -.IX Header "PORTING FROM LIBEV 3.X TO 4.X" -The major version 4 introduced some incompatible changes to the \s-1API\s0. -.PP -At the moment, the \f(CW\*(C`ev.h\*(C'\fR header file provides compatibility definitions -for all changes, so most programs should still compile. The compatibility -layer might be removed in later versions of libev, so better update to the -new \s-1API\s0 early than late. -.ie n .IP """EV_COMPAT3"" backwards compatibility mechanism" 4 -.el .IP "\f(CWEV_COMPAT3\fR backwards compatibility mechanism" 4 -.IX Item "EV_COMPAT3 backwards compatibility mechanism" -The backward compatibility mechanism can be controlled by -\&\f(CW\*(C`EV_COMPAT3\*(C'\fR. See \*(L"\s-1MACROS\s0\*(R" in \s-1PREPROCESSOR\s0 \s-1SYMBOLS\s0 in the \s-1EMBEDDING\s0 -section. -.ie n .IP """ev_default_destroy"" and ""ev_default_fork"" have been removed" 4 -.el .IP "\f(CWev_default_destroy\fR and \f(CWev_default_fork\fR have been removed" 4 -.IX Item "ev_default_destroy and ev_default_fork have been removed" -These calls can be replaced easily by their \f(CW\*(C`ev_loop_xxx\*(C'\fR counterparts: -.Sp -.Vb 2 -\& ev_loop_destroy (EV_DEFAULT_UC); -\& ev_loop_fork (EV_DEFAULT); -.Ve -.IP "function/symbol renames" 4 -.IX Item "function/symbol renames" -A number of functions and symbols have been renamed: -.Sp -.Vb 3 -\& ev_loop => ev_run -\& EVLOOP_NONBLOCK => EVRUN_NOWAIT -\& EVLOOP_ONESHOT => EVRUN_ONCE -\& -\& ev_unloop => ev_break -\& EVUNLOOP_CANCEL => EVBREAK_CANCEL -\& EVUNLOOP_ONE => EVBREAK_ONE -\& EVUNLOOP_ALL => EVBREAK_ALL -\& -\& EV_TIMEOUT => EV_TIMER -\& -\& ev_loop_count => ev_iteration -\& ev_loop_depth => ev_depth -\& ev_loop_verify => ev_verify -.Ve -.Sp -Most functions working on \f(CW\*(C`struct ev_loop\*(C'\fR objects don't have an -\&\f(CW\*(C`ev_loop_\*(C'\fR prefix, so it was removed; \f(CW\*(C`ev_loop\*(C'\fR, \f(CW\*(C`ev_unloop\*(C'\fR and -associated constants have been renamed to not collide with the \f(CW\*(C`struct -ev_loop\*(C'\fR anymore and \f(CW\*(C`EV_TIMER\*(C'\fR now follows the same naming scheme -as all other watcher types. Note that \f(CW\*(C`ev_loop_fork\*(C'\fR is still called -\&\f(CW\*(C`ev_loop_fork\*(C'\fR because it would otherwise clash with the \f(CW\*(C`ev_fork\*(C'\fR -typedef. -.ie n .IP """EV_MINIMAL"" mechanism replaced by ""EV_FEATURES""" 4 -.el .IP "\f(CWEV_MINIMAL\fR mechanism replaced by \f(CWEV_FEATURES\fR" 4 -.IX Item "EV_MINIMAL mechanism replaced by EV_FEATURES" -The preprocessor symbol \f(CW\*(C`EV_MINIMAL\*(C'\fR has been replaced by a different -mechanism, \f(CW\*(C`EV_FEATURES\*(C'\fR. Programs using \f(CW\*(C`EV_MINIMAL\*(C'\fR usually compile -and work, but the library code will of course be larger. -.SH "GLOSSARY" -.IX Header "GLOSSARY" -.IP "active" 4 -.IX Item "active" -A watcher is active as long as it has been started and not yet stopped. -See \*(L"\s-1WATCHER\s0 \s-1STATES\s0\*(R" for details. -.IP "application" 4 -.IX Item "application" -In this document, an application is whatever is using libev. -.IP "backend" 4 -.IX Item "backend" -The part of the code dealing with the operating system interfaces. -.IP "callback" 4 -.IX Item "callback" -The address of a function that is called when some event has been -detected. Callbacks are being passed the event loop, the watcher that -received the event, and the actual event bitset. -.IP "callback/watcher invocation" 4 -.IX Item "callback/watcher invocation" -The act of calling the callback associated with a watcher. -.IP "event" 4 -.IX Item "event" -A change of state of some external event, such as data now being available -for reading on a file descriptor, time having passed or simply not having -any other events happening anymore. -.Sp -In libev, events are represented as single bits (such as \f(CW\*(C`EV_READ\*(C'\fR or -\&\f(CW\*(C`EV_TIMER\*(C'\fR). -.IP "event library" 4 -.IX Item "event library" -A software package implementing an event model and loop. -.IP "event loop" 4 -.IX Item "event loop" -An entity that handles and processes external events and converts them -into callback invocations. -.IP "event model" 4 -.IX Item "event model" -The model used to describe how an event loop handles and processes -watchers and events. -.IP "pending" 4 -.IX Item "pending" -A watcher is pending as soon as the corresponding event has been -detected. See \*(L"\s-1WATCHER\s0 \s-1STATES\s0\*(R" for details. -.IP "real time" 4 -.IX Item "real time" -The physical time that is observed. It is apparently strictly monotonic :) -.IP "wall-clock time" 4 -.IX Item "wall-clock time" -The time and date as shown on clocks. Unlike real time, it can actually -be wrong and jump forwards and backwards, e.g. when you adjust your -clock. -.IP "watcher" 4 -.IX Item "watcher" -A data structure that describes interest in certain events. Watchers need -to be started (attached to an event loop) before they can receive events. -.SH "AUTHOR" -.IX Header "AUTHOR" -Marc Lehmann , with repeated corrections by Mikael -Magnusson and Emanuele Giaquinta, and minor corrections by many others. diff --git a/deps/uv/ev/ev.c b/deps/uv/ev/ev.c deleted file mode 100644 index 4187b18af7..0000000000 --- a/deps/uv/ev/ev.c +++ /dev/null @@ -1,3913 +0,0 @@ -/* - * libev event processing core, watcher management - * - * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -/* this big block deduces configuration from config.h */ -#ifndef EV_STANDALONE -# ifdef EV_CONFIG_H -# include EV_CONFIG_H -# else -# include "config.h" -# endif - -# if HAVE_CLOCK_SYSCALL -# ifndef EV_USE_CLOCK_SYSCALL -# define EV_USE_CLOCK_SYSCALL 1 -# ifndef EV_USE_REALTIME -# define EV_USE_REALTIME 0 -# endif -# ifndef EV_USE_MONOTONIC -# define EV_USE_MONOTONIC 1 -# endif -# endif -# elif !defined(EV_USE_CLOCK_SYSCALL) -# define EV_USE_CLOCK_SYSCALL 0 -# endif - -# if HAVE_CLOCK_GETTIME -# ifndef EV_USE_MONOTONIC -# define EV_USE_MONOTONIC 1 -# endif -# ifndef EV_USE_REALTIME -# define EV_USE_REALTIME 0 -# endif -# else -# ifndef EV_USE_MONOTONIC -# define EV_USE_MONOTONIC 0 -# endif -# ifndef EV_USE_REALTIME -# define EV_USE_REALTIME 0 -# endif -# endif - -# if HAVE_NANOSLEEP -# ifndef EV_USE_NANOSLEEP -# define EV_USE_NANOSLEEP EV_FEATURE_OS -# endif -# else -# undef EV_USE_NANOSLEEP -# define EV_USE_NANOSLEEP 0 -# endif - -# if HAVE_SELECT && HAVE_SYS_SELECT_H -# ifndef EV_USE_SELECT -# define EV_USE_SELECT EV_FEATURE_BACKENDS -# endif -# else -# undef EV_USE_SELECT -# define EV_USE_SELECT 0 -# endif - -# if HAVE_POLL && HAVE_POLL_H -# ifndef EV_USE_POLL -# define EV_USE_POLL EV_FEATURE_BACKENDS -# endif -# else -# undef EV_USE_POLL -# define EV_USE_POLL 0 -# endif - -# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H -# ifndef EV_USE_EPOLL -# define EV_USE_EPOLL EV_FEATURE_BACKENDS -# endif -# else -# undef EV_USE_EPOLL -# define EV_USE_EPOLL 0 -# endif - -# if HAVE_KQUEUE && HAVE_SYS_EVENT_H -# ifndef EV_USE_KQUEUE -# define EV_USE_KQUEUE EV_FEATURE_BACKENDS -# endif -# else -# undef EV_USE_KQUEUE -# define EV_USE_KQUEUE 0 -# endif - -# if HAVE_PORT_H && HAVE_PORT_CREATE -# ifndef EV_USE_PORT -# define EV_USE_PORT EV_FEATURE_BACKENDS -# endif -# else -# undef EV_USE_PORT -# define EV_USE_PORT 0 -# endif - -# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H -# ifndef EV_USE_INOTIFY -# define EV_USE_INOTIFY EV_FEATURE_OS -# endif -# else -# undef EV_USE_INOTIFY -# define EV_USE_INOTIFY 0 -# endif - -# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H -# ifndef EV_USE_SIGNALFD -# define EV_USE_SIGNALFD EV_FEATURE_OS -# endif -# else -# undef EV_USE_SIGNALFD -# define EV_USE_SIGNALFD 0 -# endif - -# if HAVE_EVENTFD -# ifndef EV_USE_EVENTFD -# define EV_USE_EVENTFD EV_FEATURE_OS -# endif -# else -# undef EV_USE_EVENTFD -# define EV_USE_EVENTFD 0 -# endif - -#endif - -#include -#include -#include -#include -#include - -#include - -#include -#include -#include -#include -#include - -#include - -#ifdef EV_H -# include EV_H -#else -# include "ev.h" -#endif - -EV_CPP(extern "C" {) - -#ifndef _WIN32 -# include -# include -# include -#else -# include -# define WIN32_LEAN_AND_MEAN -# include -# ifndef EV_SELECT_IS_WINSOCKET -# define EV_SELECT_IS_WINSOCKET 1 -# endif -# undef EV_AVOID_STDIO -#endif - -/* OS X, in its infinite idiocy, actually HARDCODES - * a limit of 1024 into their select. Where people have brains, - * OS X engineers apparently have a vacuum. Or maybe they were - * ordered to have a vacuum, or they do anything for money. - * This might help. Or not. - */ -#define _DARWIN_UNLIMITED_SELECT 1 - -/* this block tries to deduce configuration from header-defined symbols and defaults */ - -/* try to deduce the maximum number of signals on this platform */ -#if defined (EV_NSIG) -/* use what's provided */ -#elif defined (NSIG) -# define EV_NSIG (NSIG) -#elif defined(_NSIG) -# define EV_NSIG (_NSIG) -#elif defined (SIGMAX) -# define EV_NSIG (SIGMAX+1) -#elif defined (SIG_MAX) -# define EV_NSIG (SIG_MAX+1) -#elif defined (_SIG_MAX) -# define EV_NSIG (_SIG_MAX+1) -#elif defined (MAXSIG) -# define EV_NSIG (MAXSIG+1) -#elif defined (MAX_SIG) -# define EV_NSIG (MAX_SIG+1) -#elif defined (SIGARRAYSIZE) -# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ -#elif defined (_sys_nsig) -# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ -#else -# error "unable to find value for NSIG, please report" -/* to make it compile regardless, just remove the above line, */ -/* but consider reporting it, too! :) */ -# define EV_NSIG 65 -#endif - -#ifndef EV_USE_CLOCK_SYSCALL -# if __linux && __GLIBC__ >= 2 -# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS -# else -# define EV_USE_CLOCK_SYSCALL 0 -# endif -#endif - -#ifndef EV_USE_MONOTONIC -# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 -# define EV_USE_MONOTONIC EV_FEATURE_OS -# else -# define EV_USE_MONOTONIC 0 -# endif -#endif - -#ifndef EV_USE_REALTIME -# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL -#endif - -#ifndef EV_USE_NANOSLEEP -# if _POSIX_C_SOURCE >= 199309L -# define EV_USE_NANOSLEEP EV_FEATURE_OS -# else -# define EV_USE_NANOSLEEP 0 -# endif -#endif - -#ifndef EV_USE_SELECT -# define EV_USE_SELECT EV_FEATURE_BACKENDS -#endif - -#ifndef EV_USE_POLL -# ifdef _WIN32 -# define EV_USE_POLL 0 -# else -# define EV_USE_POLL EV_FEATURE_BACKENDS -# endif -#endif - -#ifndef EV_USE_EPOLL -# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) -# define EV_USE_EPOLL EV_FEATURE_BACKENDS -# else -# define EV_USE_EPOLL 0 -# endif -#endif - -#ifndef EV_USE_KQUEUE -# define EV_USE_KQUEUE 0 -#endif - -#ifndef EV_USE_PORT -# define EV_USE_PORT 0 -#endif - -#ifndef EV_USE_INOTIFY -# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) -# define EV_USE_INOTIFY EV_FEATURE_OS -# else -# define EV_USE_INOTIFY 0 -# endif -#endif - -#ifndef EV_PID_HASHSIZE -# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 -#endif - -#ifndef EV_INOTIFY_HASHSIZE -# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 -#endif - -#ifndef EV_USE_EVENTFD -# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) -# define EV_USE_EVENTFD EV_FEATURE_OS -# else -# define EV_USE_EVENTFD 0 -# endif -#endif - -#ifndef EV_USE_SIGNALFD -# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) -# define EV_USE_SIGNALFD EV_FEATURE_OS -# else -# define EV_USE_SIGNALFD 0 -# endif -#endif - -#if 0 /* debugging */ -# define EV_VERIFY 3 -# define EV_USE_4HEAP 1 -# define EV_HEAP_CACHE_AT 1 -#endif - -#ifndef EV_VERIFY -# define EV_VERIFY (EV_FEATURE_API ? 1 : 0) -#endif - -#ifndef EV_USE_4HEAP -# define EV_USE_4HEAP EV_FEATURE_DATA -#endif - -#ifndef EV_HEAP_CACHE_AT -# define EV_HEAP_CACHE_AT EV_FEATURE_DATA -#endif - -/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ -/* which makes programs even slower. might work on other unices, too. */ -#if EV_USE_CLOCK_SYSCALL -# include -# ifdef SYS_clock_gettime -# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) -# undef EV_USE_MONOTONIC -# define EV_USE_MONOTONIC 1 -# else -# undef EV_USE_CLOCK_SYSCALL -# define EV_USE_CLOCK_SYSCALL 0 -# endif -#endif - -/* this block fixes any misconfiguration where we know we run into trouble otherwise */ - -#ifdef _AIX -/* AIX has a completely broken poll.h header */ -# undef EV_USE_POLL -# define EV_USE_POLL 0 -#endif - -#ifndef CLOCK_MONOTONIC -# undef EV_USE_MONOTONIC -# define EV_USE_MONOTONIC 0 -#endif - -#ifndef CLOCK_REALTIME -# undef EV_USE_REALTIME -# define EV_USE_REALTIME 0 -#endif - -#if !EV_STAT_ENABLE -# undef EV_USE_INOTIFY -# define EV_USE_INOTIFY 0 -#endif - -#if !EV_USE_NANOSLEEP -/* hp-ux has it in sys/time.h, which we unconditionally include above */ -# if !defined(_WIN32) && !defined(__hpux) -# include -# endif -#endif - -#if EV_USE_INOTIFY -# include -# include -/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ -# ifndef IN_DONT_FOLLOW -# undef EV_USE_INOTIFY -# define EV_USE_INOTIFY 0 -# endif -#endif - -#if EV_SELECT_IS_WINSOCKET -# include -#endif - -#if EV_USE_EVENTFD -/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ -# include -# ifndef EFD_NONBLOCK -# define EFD_NONBLOCK O_NONBLOCK -# endif -# ifndef EFD_CLOEXEC -# ifdef O_CLOEXEC -# define EFD_CLOEXEC O_CLOEXEC -# else -# define EFD_CLOEXEC 02000000 -# endif -# endif -EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); -#endif - -#if EV_USE_SIGNALFD -/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ -# include -# ifndef SFD_NONBLOCK -# define SFD_NONBLOCK O_NONBLOCK -# endif -# ifndef SFD_CLOEXEC -# ifdef O_CLOEXEC -# define SFD_CLOEXEC O_CLOEXEC -# else -# define SFD_CLOEXEC 02000000 -# endif -# endif -EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); - -struct signalfd_siginfo -{ - uint32_t ssi_signo; - char pad[128 - sizeof (uint32_t)]; -}; -#endif - -/**/ - -#if EV_VERIFY >= 3 -# define EV_FREQUENT_CHECK ev_verify (EV_A) -#else -# define EV_FREQUENT_CHECK do { } while (0) -#endif - -/* - * This is used to avoid floating point rounding problems. - * It is added to ev_rt_now when scheduling periodics - * to ensure progress, time-wise, even when rounding - * errors are against us. - * This value is good at least till the year 4000. - * Better solutions welcome. - */ -#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ - -#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ -#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ - -#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) -#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) - -#if __GNUC__ >= 4 -# define expect(expr,value) __builtin_expect ((expr),(value)) -# define noinline __attribute__ ((noinline)) -#else -# define expect(expr,value) (expr) -# define noinline -# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 -# define inline -# endif -#endif - -#define expect_false(expr) expect ((expr) != 0, 0) -#define expect_true(expr) expect ((expr) != 0, 1) -#define inline_size static inline - -#if EV_FEATURE_CODE -# define inline_speed static inline -#else -# define inline_speed static noinline -#endif - -#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) - -#if EV_MINPRI == EV_MAXPRI -# define ABSPRI(w) (((W)w), 0) -#else -# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) -#endif - -#define EMPTY /* required for microsofts broken pseudo-c compiler */ -#define EMPTY2(a,b) /* used to suppress some warnings */ - -typedef ev_watcher *W; -typedef ev_watcher_list *WL; -typedef ev_watcher_time *WT; - -#define ev_active(w) ((W)(w))->active -#define ev_at(w) ((WT)(w))->at - -#if EV_USE_REALTIME -/* sig_atomic_t is used to avoid per-thread variables or locking but still */ -/* giving it a reasonably high chance of working on typical architectures */ -static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ -#endif - -#if EV_USE_MONOTONIC -static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ -#endif - -#ifndef EV_FD_TO_WIN32_HANDLE -# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) -#endif -#ifndef EV_WIN32_HANDLE_TO_FD -# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) -#endif -#ifndef EV_WIN32_CLOSE_FD -# define EV_WIN32_CLOSE_FD(fd) close (fd) -#endif - -#ifdef _WIN32 -# include "ev_win32.c" -#endif - -/*****************************************************************************/ - -#ifdef __linux -# include -#endif - -static unsigned int noinline -ev_linux_version (void) -{ -#ifdef __linux - unsigned int v = 0; - struct utsname buf; - int i; - char *p = buf.release; - - if (uname (&buf)) - return 0; - - for (i = 3+1; --i; ) - { - unsigned int c = 0; - - for (;;) - { - if (*p >= '0' && *p <= '9') - c = c * 10 + *p++ - '0'; - else - { - p += *p == '.'; - break; - } - } - - v = (v << 8) | c; - } - - return v; -#else - return 0; -#endif -} - -/*****************************************************************************/ - -#if EV_AVOID_STDIO -static void noinline -ev_printerr (const char *msg) -{ - write (STDERR_FILENO, msg, strlen (msg)); -} -#endif - -static void (*syserr_cb)(const char *msg); - -void -ev_set_syserr_cb (void (*cb)(const char *msg)) -{ - syserr_cb = cb; -} - -static void noinline -ev_syserr (const char *msg) -{ - if (!msg) - msg = "(libev) system error"; - - if (syserr_cb) - syserr_cb (msg); - else - { -#if EV_AVOID_STDIO - ev_printerr (msg); - ev_printerr (": "); - ev_printerr (strerror (errno)); - ev_printerr ("\n"); -#else - perror (msg); -#endif - abort (); - } -} - -static void * -ev_realloc_emul (void *ptr, long size) -{ -#if __GLIBC__ - return realloc (ptr, size); -#else - /* some systems, notably openbsd and darwin, fail to properly - * implement realloc (x, 0) (as required by both ansi c-89 and - * the single unix specification, so work around them here. - */ - - if (size) - return realloc (ptr, size); - - free (ptr); - return 0; -#endif -} - -static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; - -void -ev_set_allocator (void *(*cb)(void *ptr, long size)) -{ - alloc = cb; -} - -inline_speed void * -ev_realloc (void *ptr, long size) -{ - ptr = alloc (ptr, size); - - if (!ptr && size) - { -#if EV_AVOID_STDIO - ev_printerr ("(libev) memory allocation failed, aborting.\n"); -#else - fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); -#endif - abort (); - } - - return ptr; -} - -#define ev_malloc(size) ev_realloc (0, (size)) -#define ev_free(ptr) ev_realloc ((ptr), 0) - -/*****************************************************************************/ - -/* set in reify when reification needed */ -#define EV_ANFD_REIFY 1 - -/* file descriptor info structure */ -typedef struct -{ - WL head; - unsigned char events; /* the events watched for */ - unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ - unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ - unsigned char unused; -#if EV_USE_EPOLL - unsigned int egen; /* generation counter to counter epoll bugs */ -#endif -#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP - SOCKET handle; -#endif -#if EV_USE_IOCP - OVERLAPPED or, ow; -#endif -} ANFD; - -/* stores the pending event set for a given watcher */ -typedef struct -{ - W w; - int events; /* the pending event set for the given watcher */ -} ANPENDING; - -#if EV_USE_INOTIFY -/* hash table entry per inotify-id */ -typedef struct -{ - WL head; -} ANFS; -#endif - -/* Heap Entry */ -#if EV_HEAP_CACHE_AT - /* a heap element */ - typedef struct { - ev_tstamp at; - WT w; - } ANHE; - - #define ANHE_w(he) (he).w /* access watcher, read-write */ - #define ANHE_at(he) (he).at /* access cached at, read-only */ - #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ -#else - /* a heap element */ - typedef WT ANHE; - - #define ANHE_w(he) (he) - #define ANHE_at(he) (he)->at - #define ANHE_at_cache(he) -#endif - -#if EV_MULTIPLICITY - - struct ev_loop - { - ev_tstamp ev_rt_now; - #define ev_rt_now ((loop)->ev_rt_now) - #define VAR(name,decl) decl; - #include "ev_vars.h" - #undef VAR - }; - #include "ev_wrap.h" - - static struct ev_loop default_loop_struct; - struct ev_loop *ev_default_loop_ptr; - -#else - - ev_tstamp ev_rt_now; - #define VAR(name,decl) static decl; - #include "ev_vars.h" - #undef VAR - - static int ev_default_loop_ptr; - -#endif - -#if EV_FEATURE_API -# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) -# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) -# define EV_INVOKE_PENDING invoke_cb (EV_A) -#else -# define EV_RELEASE_CB (void)0 -# define EV_ACQUIRE_CB (void)0 -# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) -#endif - -#define EVBREAK_RECURSE 0x80 - -/*****************************************************************************/ - -#ifndef EV_HAVE_EV_TIME -ev_tstamp -ev_time (void) -{ -#if EV_USE_REALTIME - if (expect_true (have_realtime)) - { - struct timespec ts; - clock_gettime (CLOCK_REALTIME, &ts); - return ts.tv_sec + ts.tv_nsec * 1e-9; - } -#endif - - struct timeval tv; - gettimeofday (&tv, 0); - return tv.tv_sec + tv.tv_usec * 1e-6; -} -#endif - -inline_size ev_tstamp -get_clock (void) -{ -#if EV_USE_MONOTONIC - if (expect_true (have_monotonic)) - { - struct timespec ts; - clock_gettime (CLOCK_MONOTONIC, &ts); - return ts.tv_sec + ts.tv_nsec * 1e-9; - } -#endif - - return ev_time (); -} - -#if EV_MULTIPLICITY -ev_tstamp -ev_now (EV_P) -{ - return ev_rt_now; -} -#endif - -void -ev_sleep (ev_tstamp delay) -{ - if (delay > 0.) - { -#if EV_USE_NANOSLEEP - struct timespec ts; - - EV_TS_SET (ts, delay); - nanosleep (&ts, 0); -#elif defined(_WIN32) - Sleep ((unsigned long)(delay * 1e3)); -#else - struct timeval tv; - - /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ - /* something not guaranteed by newer posix versions, but guaranteed */ - /* by older ones */ - EV_TV_SET (tv, delay); - select (0, 0, 0, 0, &tv); -#endif - } -} - -inline_speed int -ev_timeout_to_ms (ev_tstamp timeout) -{ - int ms = timeout * 1000. + .999999; - - return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1; -} - -/*****************************************************************************/ - -#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ - -/* find a suitable new size for the given array, */ -/* hopefully by rounding to a nice-to-malloc size */ -inline_size int -array_nextsize (int elem, int cur, int cnt) -{ - int ncur = cur + 1; - - do - ncur <<= 1; - while (cnt > ncur); - - /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ - if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) - { - ncur *= elem; - ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); - ncur = ncur - sizeof (void *) * 4; - ncur /= elem; - } - - return ncur; -} - -static noinline void * -array_realloc (int elem, void *base, int *cur, int cnt) -{ - *cur = array_nextsize (elem, *cur, cnt); - return ev_realloc (base, elem * *cur); -} - -#define array_init_zero(base,count) \ - memset ((void *)(base), 0, sizeof (*(base)) * (count)) - -#define array_needsize(type,base,cur,cnt,init) \ - if (expect_false ((cnt) > (cur))) \ - { \ - int ocur_ = (cur); \ - (base) = (type *)array_realloc \ - (sizeof (type), (base), &(cur), (cnt)); \ - init ((base) + (ocur_), (cur) - ocur_); \ - } - -#if 0 -#define array_slim(type,stem) \ - if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ - { \ - stem ## max = array_roundsize (stem ## cnt >> 1); \ - base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ - fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ - } -#endif - -#define array_free(stem, idx) \ - ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 - -/*****************************************************************************/ - -/* dummy callback for pending events */ -static void noinline -pendingcb (EV_P_ ev_prepare *w, int revents) -{ -} - -void noinline -ev_feed_event (EV_P_ void *w, int revents) -{ - W w_ = (W)w; - int pri = ABSPRI (w_); - - if (expect_false (w_->pending)) - pendings [pri][w_->pending - 1].events |= revents; - else - { - w_->pending = ++pendingcnt [pri]; - array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); - pendings [pri][w_->pending - 1].w = w_; - pendings [pri][w_->pending - 1].events = revents; - } -} - -inline_speed void -feed_reverse (EV_P_ W w) -{ - array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); - rfeeds [rfeedcnt++] = w; -} - -inline_size void -feed_reverse_done (EV_P_ int revents) -{ - do - ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); - while (rfeedcnt); -} - -inline_speed void -queue_events (EV_P_ W *events, int eventcnt, int type) -{ - int i; - - for (i = 0; i < eventcnt; ++i) - ev_feed_event (EV_A_ events [i], type); -} - -/*****************************************************************************/ - -inline_speed void -fd_event_nocheck (EV_P_ int fd, int revents) -{ - ANFD *anfd = anfds + fd; - ev_io *w; - - for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) - { - int ev = w->events & revents; - - if (ev) - ev_feed_event (EV_A_ (W)w, ev); - } -} - -/* do not submit kernel events for fds that have reify set */ -/* because that means they changed while we were polling for new events */ -inline_speed void -fd_event (EV_P_ int fd, int revents) -{ - ANFD *anfd = anfds + fd; - - if (expect_true (!anfd->reify)) - fd_event_nocheck (EV_A_ fd, revents); -} - -void -ev_feed_fd_event (EV_P_ int fd, int revents) -{ - if (fd >= 0 && fd < anfdmax) - fd_event_nocheck (EV_A_ fd, revents); -} - -/* make sure the external fd watch events are in-sync */ -/* with the kernel/libev internal state */ -inline_size void -fd_reify (EV_P) -{ - int i; - -#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP - for (i = 0; i < fdchangecnt; ++i) - { - int fd = fdchanges [i]; - ANFD *anfd = anfds + fd; - - if (anfd->reify & EV__IOFDSET) - { - SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); - - if (handle != anfd->handle) - { - unsigned long arg; - - assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); - - /* handle changed, but fd didn't - we need to do it in two steps */ - backend_modify (EV_A_ fd, anfd->events, 0); - anfd->events = 0; - anfd->handle = handle; - } - } - } -#endif - - for (i = 0; i < fdchangecnt; ++i) - { - int fd = fdchanges [i]; - ANFD *anfd = anfds + fd; - ev_io *w; - - unsigned char o_events = anfd->events; - unsigned char o_reify = anfd->reify; - - anfd->reify = 0; - - /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ - { - anfd->events = 0; - - for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) - anfd->events |= (unsigned char)w->events; - - if (o_events != anfd->events) - o_reify = EV__IOFDSET; /* actually |= */ - } - - if (o_reify & EV__IOFDSET) - backend_modify (EV_A_ fd, o_events, anfd->events); - } - - fdchangecnt = 0; -} - -/* something about the given fd changed */ -inline_size void -fd_change (EV_P_ int fd, int flags) -{ - unsigned char reify = anfds [fd].reify; - anfds [fd].reify |= flags; - - if (expect_true (!reify)) - { - ++fdchangecnt; - array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); - fdchanges [fdchangecnt - 1] = fd; - } -} - -/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ -inline_speed void -fd_kill (EV_P_ int fd) -{ - ev_io *w; - - while ((w = (ev_io *)anfds [fd].head)) - { - ev_io_stop (EV_A_ w); - ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); - } -} - -/* check whether the given fd is actually valid, for error recovery */ -inline_size int -fd_valid (int fd) -{ -#ifdef _WIN32 - return EV_FD_TO_WIN32_HANDLE (fd) != -1; -#else - return fcntl (fd, F_GETFD) != -1; -#endif -} - -/* called on EBADF to verify fds */ -static void noinline -fd_ebadf (EV_P) -{ - int fd; - - for (fd = 0; fd < anfdmax; ++fd) - if (anfds [fd].events) - if (!fd_valid (fd) && errno == EBADF) - fd_kill (EV_A_ fd); -} - -/* called on ENOMEM in select/poll to kill some fds and retry */ -static void noinline -fd_enomem (EV_P) -{ - int fd; - - for (fd = anfdmax; fd--; ) - if (anfds [fd].events) - { - fd_kill (EV_A_ fd); - break; - } -} - -/* usually called after fork if backend needs to re-arm all fds from scratch */ -static void noinline -fd_rearm_all (EV_P) -{ - int fd; - - for (fd = 0; fd < anfdmax; ++fd) - if (anfds [fd].events) - { - anfds [fd].events = 0; - anfds [fd].emask = 0; - fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); - } -} - -/* used to prepare libev internal fd's */ -/* this is not fork-safe */ -inline_speed void -fd_intern (int fd) -{ -#ifdef _WIN32 - unsigned long arg = 1; - ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); -#else - fcntl (fd, F_SETFD, FD_CLOEXEC); - fcntl (fd, F_SETFL, O_NONBLOCK); -#endif -} - -/*****************************************************************************/ - -/* - * the heap functions want a real array index. array index 0 is guaranteed to not - * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives - * the branching factor of the d-tree. - */ - -/* - * at the moment we allow libev the luxury of two heaps, - * a small-code-size 2-heap one and a ~1.5kb larger 4-heap - * which is more cache-efficient. - * the difference is about 5% with 50000+ watchers. - */ -#if EV_USE_4HEAP - -#define DHEAP 4 -#define HEAP0 (DHEAP - 1) /* index of first element in heap */ -#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) -#define UPHEAP_DONE(p,k) ((p) == (k)) - -/* away from the root */ -inline_speed void -downheap (ANHE *heap, int N, int k) -{ - ANHE he = heap [k]; - ANHE *E = heap + N + HEAP0; - - for (;;) - { - ev_tstamp minat; - ANHE *minpos; - ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; - - /* find minimum child */ - if (expect_true (pos + DHEAP - 1 < E)) - { - /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); - if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); - if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); - if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); - } - else if (pos < E) - { - /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); - if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); - if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); - if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); - } - else - break; - - if (ANHE_at (he) <= minat) - break; - - heap [k] = *minpos; - ev_active (ANHE_w (*minpos)) = k; - - k = minpos - heap; - } - - heap [k] = he; - ev_active (ANHE_w (he)) = k; -} - -#else /* 4HEAP */ - -#define HEAP0 1 -#define HPARENT(k) ((k) >> 1) -#define UPHEAP_DONE(p,k) (!(p)) - -/* away from the root */ -inline_speed void -downheap (ANHE *heap, int N, int k) -{ - ANHE he = heap [k]; - - for (;;) - { - int c = k << 1; - - if (c >= N + HEAP0) - break; - - c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) - ? 1 : 0; - - if (ANHE_at (he) <= ANHE_at (heap [c])) - break; - - heap [k] = heap [c]; - ev_active (ANHE_w (heap [k])) = k; - - k = c; - } - - heap [k] = he; - ev_active (ANHE_w (he)) = k; -} -#endif - -/* towards the root */ -inline_speed void -upheap (ANHE *heap, int k) -{ - ANHE he = heap [k]; - - for (;;) - { - int p = HPARENT (k); - - if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) - break; - - heap [k] = heap [p]; - ev_active (ANHE_w (heap [k])) = k; - k = p; - } - - heap [k] = he; - ev_active (ANHE_w (he)) = k; -} - -/* move an element suitably so it is in a correct place */ -inline_size void -adjustheap (ANHE *heap, int N, int k) -{ - if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) - upheap (heap, k); - else - downheap (heap, N, k); -} - -/* rebuild the heap: this function is used only once and executed rarely */ -inline_size void -reheap (ANHE *heap, int N) -{ - int i; - - /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ - /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ - for (i = 0; i < N; ++i) - upheap (heap, i + HEAP0); -} - -/*****************************************************************************/ - -/* associate signal watchers to a signal signal */ -typedef struct -{ - EV_ATOMIC_T pending; -#if EV_MULTIPLICITY - EV_P; -#endif - WL head; -} ANSIG; - -static ANSIG signals [EV_NSIG - 1]; - -/*****************************************************************************/ - -#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE - -static void noinline -evpipe_init (EV_P) -{ - if (!ev_is_active (&pipe_w)) - { -# if EV_USE_EVENTFD - evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); - if (evfd < 0 && errno == EINVAL) - evfd = eventfd (0, 0); - - if (evfd >= 0) - { - evpipe [0] = -1; - fd_intern (evfd); /* doing it twice doesn't hurt */ - ev_io_set (&pipe_w, evfd, EV_READ); - } - else -# endif - { - while (pipe (evpipe)) - ev_syserr ("(libev) error creating signal/async pipe"); - - fd_intern (evpipe [0]); - fd_intern (evpipe [1]); - ev_io_set (&pipe_w, evpipe [0], EV_READ); - } - - ev_io_start (EV_A_ &pipe_w); - ev_unref (EV_A); /* watcher should not keep loop alive */ - } -} - -inline_size void -evpipe_write (EV_P_ EV_ATOMIC_T *flag) -{ - if (!*flag) - { - int old_errno = errno; /* save errno because write might clobber it */ - char dummy; - - *flag = 1; - -#if EV_USE_EVENTFD - if (evfd >= 0) - { - uint64_t counter = 1; - write (evfd, &counter, sizeof (uint64_t)); - } - else -#endif - /* win32 people keep sending patches that change this write() to send() */ - /* and then run away. but send() is wrong, it wants a socket handle on win32 */ - /* so when you think this write should be a send instead, please find out */ - /* where your send() is from - it's definitely not the microsoft send, and */ - /* tell me. thank you. */ - write (evpipe [1], &dummy, 1); - - errno = old_errno; - } -} - -/* called whenever the libev signal pipe */ -/* got some events (signal, async) */ -static void -pipecb (EV_P_ ev_io *iow, int revents) -{ - int i; - -#if EV_USE_EVENTFD - if (evfd >= 0) - { - uint64_t counter; - read (evfd, &counter, sizeof (uint64_t)); - } - else -#endif - { - char dummy; - /* see discussion in evpipe_write when you think this read should be recv in win32 */ - read (evpipe [0], &dummy, 1); - } - -#if EV_SIGNAL_ENABLE - if (sig_pending) - { - sig_pending = 0; - - for (i = EV_NSIG - 1; i--; ) - if (expect_false (signals [i].pending)) - ev_feed_signal_event (EV_A_ i + 1); - } -#endif - -#if EV_ASYNC_ENABLE - if (async_pending) - { - async_pending = 0; - - for (i = asynccnt; i--; ) - if (asyncs [i]->sent) - { - asyncs [i]->sent = 0; - ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); - } - } -#endif -} - -/*****************************************************************************/ - -void -ev_feed_signal (int signum) -{ -#if EV_MULTIPLICITY - EV_P = signals [signum - 1].loop; - - if (!EV_A) - return; -#endif - - signals [signum - 1].pending = 1; - evpipe_write (EV_A_ &sig_pending); -} - -static void -ev_sighandler (int signum) -{ -#ifdef _WIN32 - signal (signum, ev_sighandler); -#endif - - ev_feed_signal (signum); -} - -void noinline -ev_feed_signal_event (EV_P_ int signum) -{ - WL w; - - if (expect_false (signum <= 0 || signum > EV_NSIG)) - return; - - --signum; - -#if EV_MULTIPLICITY - /* it is permissible to try to feed a signal to the wrong loop */ - /* or, likely more useful, feeding a signal nobody is waiting for */ - - if (expect_false (signals [signum].loop != EV_A)) - return; -#endif - - signals [signum].pending = 0; - - for (w = signals [signum].head; w; w = w->next) - ev_feed_event (EV_A_ (W)w, EV_SIGNAL); -} - -#if EV_USE_SIGNALFD -static void -sigfdcb (EV_P_ ev_io *iow, int revents) -{ - struct signalfd_siginfo si[2], *sip; /* these structs are big */ - - for (;;) - { - ssize_t res = read (sigfd, si, sizeof (si)); - - /* not ISO-C, as res might be -1, but works with SuS */ - for (sip = si; (char *)sip < (char *)si + res; ++sip) - ev_feed_signal_event (EV_A_ sip->ssi_signo); - - if (res < (ssize_t)sizeof (si)) - break; - } -} -#endif - -#endif - -/*****************************************************************************/ - -#if EV_CHILD_ENABLE -static WL childs [EV_PID_HASHSIZE]; - -static ev_signal childev; - -#ifndef WIFCONTINUED -# define WIFCONTINUED(status) 0 -#endif - -/* handle a single child status event */ -inline_speed void -child_reap (EV_P_ int chain, int pid, int status) -{ - ev_child *w; - int traced = WIFSTOPPED (status) || WIFCONTINUED (status); - - for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) - { - if ((w->pid == pid || !w->pid) - && (!traced || (w->flags & 1))) - { - ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ - w->rpid = pid; - w->rstatus = status; - ev_feed_event (EV_A_ (W)w, EV_CHILD); - } - } -} - -#ifndef WCONTINUED -# define WCONTINUED 0 -#endif - -/* called on sigchld etc., calls waitpid */ -static void -childcb (EV_P_ ev_signal *sw, int revents) -{ - int pid, status; - - /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ - if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) - if (!WCONTINUED - || errno != EINVAL - || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) - return; - - /* make sure we are called again until all children have been reaped */ - /* we need to do it this way so that the callback gets called before we continue */ - ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); - - child_reap (EV_A_ pid, pid, status); - if ((EV_PID_HASHSIZE) > 1) - child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ -} - -#endif - -/*****************************************************************************/ - -#if EV_USE_IOCP -# include "ev_iocp.c" -#endif -#if EV_USE_PORT -# include "ev_port.c" -#endif -#if EV_USE_KQUEUE -# include "ev_kqueue.c" -#endif -#if EV_USE_EPOLL -# include "ev_epoll.c" -#endif -#if EV_USE_POLL -# include "ev_poll.c" -#endif -#if EV_USE_SELECT -# include "ev_select.c" -#endif - -int -ev_version_major (void) -{ - return EV_VERSION_MAJOR; -} - -int -ev_version_minor (void) -{ - return EV_VERSION_MINOR; -} - -/* return true if we are running with elevated privileges and should ignore env variables */ -int inline_size -enable_secure (void) -{ -#ifdef _WIN32 - return 0; -#else - return getuid () != geteuid () - || getgid () != getegid (); -#endif -} - -unsigned int -ev_supported_backends (void) -{ - unsigned int flags = 0; - - if (EV_USE_PORT ) flags |= EVBACKEND_PORT; - if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; - if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; - if (EV_USE_POLL ) flags |= EVBACKEND_POLL; - if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; - - return flags; -} - -unsigned int -ev_recommended_backends (void) -{ - unsigned int flags = ev_supported_backends (); - -#ifndef __NetBSD__ - /* kqueue is borked on everything but netbsd apparently */ - /* it usually doesn't work correctly on anything but sockets and pipes */ - flags &= ~EVBACKEND_KQUEUE; -#endif -#ifdef __APPLE__ - /* only select works correctly on that "unix-certified" platform */ - flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ - flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ -#endif -#ifdef __FreeBSD__ - flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ -#endif - - return flags; -} - -unsigned int -ev_embeddable_backends (void) -{ - int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; - - /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ - if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ - flags &= ~EVBACKEND_EPOLL; - - return flags; -} - -unsigned int -ev_backend (EV_P) -{ - return backend; -} - -#if EV_FEATURE_API -unsigned int -ev_iteration (EV_P) -{ - return loop_count; -} - -unsigned int -ev_depth (EV_P) -{ - return loop_depth; -} - -void -ev_set_io_collect_interval (EV_P_ ev_tstamp interval) -{ - io_blocktime = interval; -} - -void -ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) -{ - timeout_blocktime = interval; -} - -void -ev_set_userdata (EV_P_ void *data) -{ - userdata = data; -} - -void * -ev_userdata (EV_P) -{ - return userdata; -} - -void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) -{ - invoke_cb = invoke_pending_cb; -} - -void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) -{ - release_cb = release; - acquire_cb = acquire; -} -#endif - -/* initialise a loop structure, must be zero-initialised */ -static void noinline -loop_init (EV_P_ unsigned int flags) -{ - if (!backend) - { - origflags = flags; - -#if EV_USE_REALTIME - if (!have_realtime) - { - struct timespec ts; - - if (!clock_gettime (CLOCK_REALTIME, &ts)) - have_realtime = 1; - } -#endif - -#if EV_USE_MONOTONIC - if (!have_monotonic) - { - struct timespec ts; - - if (!clock_gettime (CLOCK_MONOTONIC, &ts)) - have_monotonic = 1; - } -#endif - - /* pid check not overridable via env */ -#ifndef _WIN32 - if (flags & EVFLAG_FORKCHECK) - curpid = getpid (); -#endif - - if (!(flags & EVFLAG_NOENV) - && !enable_secure () - && getenv ("LIBEV_FLAGS")) - flags = atoi (getenv ("LIBEV_FLAGS")); - - ev_rt_now = ev_time (); - mn_now = get_clock (); - now_floor = mn_now; - rtmn_diff = ev_rt_now - mn_now; -#if EV_FEATURE_API - invoke_cb = ev_invoke_pending; -#endif - - io_blocktime = 0.; - timeout_blocktime = 0.; - backend = 0; - backend_fd = -1; - sig_pending = 0; -#if EV_ASYNC_ENABLE - async_pending = 0; -#endif -#if EV_USE_INOTIFY - fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; -#endif -#if EV_USE_SIGNALFD - sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; -#endif - - if (!(flags & EVBACKEND_MASK)) - flags |= ev_recommended_backends (); - -#if EV_USE_IOCP - if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); -#endif -#if EV_USE_PORT - if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); -#endif -#if EV_USE_KQUEUE - if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); -#endif -#if EV_USE_EPOLL - if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); -#endif -#if EV_USE_POLL - if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); -#endif -#if EV_USE_SELECT - if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); -#endif - - ev_prepare_init (&pending_w, pendingcb); - -#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE - ev_init (&pipe_w, pipecb); - ev_set_priority (&pipe_w, EV_MAXPRI); -#endif - } -} - -/* free up a loop structure */ -void -ev_loop_destroy (EV_P) -{ - int i; - -#if EV_MULTIPLICITY - /* mimic free (0) */ - if (!EV_A) - return; -#endif - -#if EV_CLEANUP_ENABLE - /* queue cleanup watchers (and execute them) */ - if (expect_false (cleanupcnt)) - { - queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); - EV_INVOKE_PENDING; - } -#endif - -#if EV_CHILD_ENABLE - if (ev_is_active (&childev)) - { - ev_ref (EV_A); /* child watcher */ - ev_signal_stop (EV_A_ &childev); - } -#endif - - if (ev_is_active (&pipe_w)) - { - /*ev_ref (EV_A);*/ - /*ev_io_stop (EV_A_ &pipe_w);*/ - -#if EV_USE_EVENTFD - if (evfd >= 0) - close (evfd); -#endif - - if (evpipe [0] >= 0) - { - EV_WIN32_CLOSE_FD (evpipe [0]); - EV_WIN32_CLOSE_FD (evpipe [1]); - } - } - -#if EV_USE_SIGNALFD - if (ev_is_active (&sigfd_w)) - close (sigfd); -#endif - -#if EV_USE_INOTIFY - if (fs_fd >= 0) - close (fs_fd); -#endif - - if (backend_fd >= 0) - close (backend_fd); - -#if EV_USE_IOCP - if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); -#endif -#if EV_USE_PORT - if (backend == EVBACKEND_PORT ) port_destroy (EV_A); -#endif -#if EV_USE_KQUEUE - if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); -#endif -#if EV_USE_EPOLL - if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); -#endif -#if EV_USE_POLL - if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); -#endif -#if EV_USE_SELECT - if (backend == EVBACKEND_SELECT) select_destroy (EV_A); -#endif - - for (i = NUMPRI; i--; ) - { - array_free (pending, [i]); -#if EV_IDLE_ENABLE - array_free (idle, [i]); -#endif - } - - ev_free (anfds); anfds = 0; anfdmax = 0; - - /* have to use the microsoft-never-gets-it-right macro */ - array_free (rfeed, EMPTY); - array_free (fdchange, EMPTY); - array_free (timer, EMPTY); -#if EV_PERIODIC_ENABLE - array_free (periodic, EMPTY); -#endif -#if EV_FORK_ENABLE - array_free (fork, EMPTY); -#endif -#if EV_CLEANUP_ENABLE - array_free (cleanup, EMPTY); -#endif - array_free (prepare, EMPTY); - array_free (check, EMPTY); -#if EV_ASYNC_ENABLE - array_free (async, EMPTY); -#endif - - backend = 0; - -#if EV_MULTIPLICITY - if (ev_is_default_loop (EV_A)) -#endif - ev_default_loop_ptr = 0; -#if EV_MULTIPLICITY - else - ev_free (EV_A); -#endif -} - -#if EV_USE_INOTIFY -inline_size void infy_fork (EV_P); -#endif - -inline_size void -loop_fork (EV_P) -{ -#if EV_USE_PORT - if (backend == EVBACKEND_PORT ) port_fork (EV_A); -#endif -#if EV_USE_KQUEUE - if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); -#endif -#if EV_USE_EPOLL - if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); -#endif -#if EV_USE_INOTIFY - infy_fork (EV_A); -#endif - - if (ev_is_active (&pipe_w)) - { - /* this "locks" the handlers against writing to the pipe */ - /* while we modify the fd vars */ - sig_pending = 1; -#if EV_ASYNC_ENABLE - async_pending = 1; -#endif - - ev_ref (EV_A); - ev_io_stop (EV_A_ &pipe_w); - -#if EV_USE_EVENTFD - if (evfd >= 0) - close (evfd); -#endif - - if (evpipe [0] >= 0) - { - EV_WIN32_CLOSE_FD (evpipe [0]); - EV_WIN32_CLOSE_FD (evpipe [1]); - } - -#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE - evpipe_init (EV_A); - /* now iterate over everything, in case we missed something */ - pipecb (EV_A_ &pipe_w, EV_READ); -#endif - } - - postfork = 0; -} - -#if EV_MULTIPLICITY - -struct ev_loop * -ev_loop_new (unsigned int flags) -{ - EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); - - memset (EV_A, 0, sizeof (struct ev_loop)); - loop_init (EV_A_ flags); - - if (ev_backend (EV_A)) - return EV_A; - - ev_free (EV_A); - return 0; -} - -#endif /* multiplicity */ - -#if EV_VERIFY -static void noinline -verify_watcher (EV_P_ W w) -{ - assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); - - if (w->pending) - assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); -} - -static void noinline -verify_heap (EV_P_ ANHE *heap, int N) -{ - int i; - - for (i = HEAP0; i < N + HEAP0; ++i) - { - assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); - assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); - assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); - - verify_watcher (EV_A_ (W)ANHE_w (heap [i])); - } -} - -static void noinline -array_verify (EV_P_ W *ws, int cnt) -{ - while (cnt--) - { - assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); - verify_watcher (EV_A_ ws [cnt]); - } -} -#endif - -#if EV_FEATURE_API -void -ev_verify (EV_P) -{ -#if EV_VERIFY - int i; - WL w; - - assert (activecnt >= -1); - - assert (fdchangemax >= fdchangecnt); - for (i = 0; i < fdchangecnt; ++i) - assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); - - assert (anfdmax >= 0); - for (i = 0; i < anfdmax; ++i) - for (w = anfds [i].head; w; w = w->next) - { - verify_watcher (EV_A_ (W)w); - assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); - assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); - } - - assert (timermax >= timercnt); - verify_heap (EV_A_ timers, timercnt); - -#if EV_PERIODIC_ENABLE - assert (periodicmax >= periodiccnt); - verify_heap (EV_A_ periodics, periodiccnt); -#endif - - for (i = NUMPRI; i--; ) - { - assert (pendingmax [i] >= pendingcnt [i]); -#if EV_IDLE_ENABLE - assert (idleall >= 0); - assert (idlemax [i] >= idlecnt [i]); - array_verify (EV_A_ (W *)idles [i], idlecnt [i]); -#endif - } - -#if EV_FORK_ENABLE - assert (forkmax >= forkcnt); - array_verify (EV_A_ (W *)forks, forkcnt); -#endif - -#if EV_CLEANUP_ENABLE - assert (cleanupmax >= cleanupcnt); - array_verify (EV_A_ (W *)cleanups, cleanupcnt); -#endif - -#if EV_ASYNC_ENABLE - assert (asyncmax >= asynccnt); - array_verify (EV_A_ (W *)asyncs, asynccnt); -#endif - -#if EV_PREPARE_ENABLE - assert (preparemax >= preparecnt); - array_verify (EV_A_ (W *)prepares, preparecnt); -#endif - -#if EV_CHECK_ENABLE - assert (checkmax >= checkcnt); - array_verify (EV_A_ (W *)checks, checkcnt); -#endif - -# if 0 -#if EV_CHILD_ENABLE - for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) - for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) -#endif -# endif -#endif -} -#endif - -#if EV_MULTIPLICITY -struct ev_loop * -#else -int -#endif -ev_default_loop (unsigned int flags) -{ - if (!ev_default_loop_ptr) - { -#if EV_MULTIPLICITY - EV_P = ev_default_loop_ptr = &default_loop_struct; -#else - ev_default_loop_ptr = 1; -#endif - - loop_init (EV_A_ flags); - - if (ev_backend (EV_A)) - { -#if EV_CHILD_ENABLE - ev_signal_init (&childev, childcb, SIGCHLD); - ev_set_priority (&childev, EV_MAXPRI); - ev_signal_start (EV_A_ &childev); - ev_unref (EV_A); /* child watcher should not keep loop alive */ -#endif - } - else - ev_default_loop_ptr = 0; - } - - return ev_default_loop_ptr; -} - -void -ev_loop_fork (EV_P) -{ - postfork = 1; /* must be in line with ev_default_fork */ -} - -/*****************************************************************************/ - -void -ev_invoke (EV_P_ void *w, int revents) -{ - EV_CB_INVOKE ((W)w, revents); -} - -unsigned int -ev_pending_count (EV_P) -{ - int pri; - unsigned int count = 0; - - for (pri = NUMPRI; pri--; ) - count += pendingcnt [pri]; - - return count; -} - -void noinline -ev_invoke_pending (EV_P) -{ - int pri; - - for (pri = NUMPRI; pri--; ) - while (pendingcnt [pri]) - { - ANPENDING *p = pendings [pri] + --pendingcnt [pri]; - - p->w->pending = 0; - EV_CB_INVOKE (p->w, p->events); - EV_FREQUENT_CHECK; - } -} - -#if EV_IDLE_ENABLE -/* make idle watchers pending. this handles the "call-idle */ -/* only when higher priorities are idle" logic */ -inline_size void -idle_reify (EV_P) -{ - if (expect_false (idleall)) - { - int pri; - - for (pri = NUMPRI; pri--; ) - { - if (pendingcnt [pri]) - break; - - if (idlecnt [pri]) - { - queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); - break; - } - } - } -} -#endif - -/* make timers pending */ -inline_size void -timers_reify (EV_P) -{ - EV_FREQUENT_CHECK; - - if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) - { - do - { - ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); - - /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ - - /* first reschedule or stop timer */ - if (w->repeat) - { - ev_at (w) += w->repeat; - if (ev_at (w) < mn_now) - ev_at (w) = mn_now; - - assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); - - ANHE_at_cache (timers [HEAP0]); - downheap (timers, timercnt, HEAP0); - } - else - ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ - - EV_FREQUENT_CHECK; - feed_reverse (EV_A_ (W)w); - } - while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); - - feed_reverse_done (EV_A_ EV_TIMER); - } -} - -#if EV_PERIODIC_ENABLE - -inline_speed void -periodic_recalc (EV_P_ ev_periodic *w) -{ - /* TODO: use slow but potentially more correct incremental algo, */ - /* also do not rely on ceil */ - ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; -} - -/* make periodics pending */ -inline_size void -periodics_reify (EV_P) -{ - EV_FREQUENT_CHECK; - - while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) - { - int feed_count = 0; - - do - { - ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); - - /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ - - /* first reschedule or stop timer */ - if (w->reschedule_cb) - { - ev_at (w) = w->reschedule_cb (w, ev_rt_now); - - assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); - - ANHE_at_cache (periodics [HEAP0]); - downheap (periodics, periodiccnt, HEAP0); - } - else if (w->interval) - { - periodic_recalc (EV_A_ w); - - /* if next trigger time is not sufficiently in the future, put it there */ - /* this might happen because of floating point inexactness */ - if (ev_at (w) - ev_rt_now < TIME_EPSILON) - { - ev_at (w) += w->interval; - - /* if interval is unreasonably low we might still have a time in the past */ - /* so correct this. this will make the periodic very inexact, but the user */ - /* has effectively asked to get triggered more often than possible */ - if (ev_at (w) < ev_rt_now) - ev_at (w) = ev_rt_now; - } - - ANHE_at_cache (periodics [HEAP0]); - downheap (periodics, periodiccnt, HEAP0); - } - else - ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ - - EV_FREQUENT_CHECK; - feed_reverse (EV_A_ (W)w); - } - while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); - - feed_reverse_done (EV_A_ EV_PERIODIC); - } -} - -/* simply recalculate all periodics */ -/* TODO: maybe ensure that at least one event happens when jumping forward? */ -static void noinline -periodics_reschedule (EV_P) -{ - int i; - - /* adjust periodics after time jump */ - for (i = HEAP0; i < periodiccnt + HEAP0; ++i) - { - ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); - - if (w->reschedule_cb) - ev_at (w) = w->reschedule_cb (w, ev_rt_now); - else if (w->interval) - periodic_recalc (EV_A_ w); - - ANHE_at_cache (periodics [i]); - } - - reheap (periodics, periodiccnt); -} -#endif - -/* adjust all timers by a given offset */ -static void noinline -timers_reschedule (EV_P_ ev_tstamp adjust) -{ - int i; - - for (i = 0; i < timercnt; ++i) - { - ANHE *he = timers + i + HEAP0; - ANHE_w (*he)->at += adjust; - ANHE_at_cache (*he); - } -} - -/* fetch new monotonic and realtime times from the kernel */ -/* also detect if there was a timejump, and act accordingly */ -inline_speed void -time_update (EV_P_ ev_tstamp max_block) -{ -#if EV_USE_MONOTONIC - if (expect_true (have_monotonic)) - { - int i; - ev_tstamp odiff = rtmn_diff; - - mn_now = get_clock (); - - /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ - /* interpolate in the meantime */ - if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) - { - ev_rt_now = rtmn_diff + mn_now; - return; - } - - now_floor = mn_now; - ev_rt_now = ev_time (); - - /* loop a few times, before making important decisions. - * on the choice of "4": one iteration isn't enough, - * in case we get preempted during the calls to - * ev_time and get_clock. a second call is almost guaranteed - * to succeed in that case, though. and looping a few more times - * doesn't hurt either as we only do this on time-jumps or - * in the unlikely event of having been preempted here. - */ - for (i = 4; --i; ) - { - rtmn_diff = ev_rt_now - mn_now; - - if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) - return; /* all is well */ - - ev_rt_now = ev_time (); - mn_now = get_clock (); - now_floor = mn_now; - } - - /* no timer adjustment, as the monotonic clock doesn't jump */ - /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ -# if EV_PERIODIC_ENABLE - periodics_reschedule (EV_A); -# endif - } - else -#endif - { - ev_rt_now = ev_time (); - - if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) - { - /* adjust timers. this is easy, as the offset is the same for all of them */ - timers_reschedule (EV_A_ ev_rt_now - mn_now); -#if EV_PERIODIC_ENABLE - periodics_reschedule (EV_A); -#endif - } - - mn_now = ev_rt_now; - } -} - -void -ev_run (EV_P_ int flags) -{ -#if EV_FEATURE_API - ++loop_depth; -#endif - - assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); - - loop_done = EVBREAK_CANCEL; - - EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ - - do - { -#if EV_VERIFY >= 2 - ev_verify (EV_A); -#endif - -#ifndef _WIN32 - if (expect_false (curpid)) /* penalise the forking check even more */ - if (expect_false (getpid () != curpid)) - { - curpid = getpid (); - postfork = 1; - } -#endif - -#if EV_FORK_ENABLE - /* we might have forked, so queue fork handlers */ - if (expect_false (postfork)) - if (forkcnt) - { - queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); - EV_INVOKE_PENDING; - } -#endif - -#if EV_PREPARE_ENABLE - /* queue prepare watchers (and execute them) */ - if (expect_false (preparecnt)) - { - queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); - EV_INVOKE_PENDING; - } -#endif - - if (expect_false (loop_done)) - break; - - /* we might have forked, so reify kernel state if necessary */ - if (expect_false (postfork)) - loop_fork (EV_A); - - /* update fd-related kernel structures */ - fd_reify (EV_A); - - /* calculate blocking time */ - { - ev_tstamp waittime = 0.; - ev_tstamp sleeptime = 0.; - - /* remember old timestamp for io_blocktime calculation */ - ev_tstamp prev_mn_now = mn_now; - - /* update time to cancel out callback processing overhead */ - time_update (EV_A_ 1e100); - - if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) - { - waittime = MAX_BLOCKTIME; - - if (timercnt) - { - ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; - if (waittime > to) waittime = to; - } - -#if EV_PERIODIC_ENABLE - if (periodiccnt) - { - ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; - if (waittime > to) waittime = to; - } -#endif - - /* don't let timeouts decrease the waittime below timeout_blocktime */ - if (expect_false (waittime < timeout_blocktime)) - waittime = timeout_blocktime; - - /* extra check because io_blocktime is commonly 0 */ - if (expect_false (io_blocktime)) - { - sleeptime = io_blocktime - (mn_now - prev_mn_now); - - if (sleeptime > waittime - backend_fudge) - sleeptime = waittime - backend_fudge; - - if (expect_true (sleeptime > 0.)) - { - ev_sleep (sleeptime); - waittime -= sleeptime; - } - } - } - -#if EV_FEATURE_API - ++loop_count; -#endif - assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ - backend_poll (EV_A_ waittime); - assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ - - /* update ev_rt_now, do magic */ - time_update (EV_A_ waittime + sleeptime); - } - - /* queue pending timers and reschedule them */ - timers_reify (EV_A); /* relative timers called last */ -#if EV_PERIODIC_ENABLE - periodics_reify (EV_A); /* absolute timers called first */ -#endif - -#if EV_IDLE_ENABLE - /* queue idle watchers unless other events are pending */ - idle_reify (EV_A); -#endif - -#if EV_CHECK_ENABLE - /* queue check watchers, to be executed first */ - if (expect_false (checkcnt)) - queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); -#endif - - EV_INVOKE_PENDING; - } - while (expect_true ( - activecnt - && !loop_done - && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) - )); - - if (loop_done == EVBREAK_ONE) - loop_done = EVBREAK_CANCEL; - -#if EV_FEATURE_API - --loop_depth; -#endif -} - -void -ev_break (EV_P_ int how) -{ - loop_done = how; -} - -void -ev_ref (EV_P) -{ - ++activecnt; -} - -void -ev_unref (EV_P) -{ - --activecnt; -} - -void -ev_now_update (EV_P) -{ - time_update (EV_A_ 1e100); -} - -void -ev_suspend (EV_P) -{ - ev_now_update (EV_A); -} - -void -ev_resume (EV_P) -{ - ev_tstamp mn_prev = mn_now; - - ev_now_update (EV_A); - timers_reschedule (EV_A_ mn_now - mn_prev); -#if EV_PERIODIC_ENABLE - /* TODO: really do this? */ - periodics_reschedule (EV_A); -#endif -} - -/*****************************************************************************/ -/* singly-linked list management, used when the expected list length is short */ - -inline_size void -wlist_add (WL *head, WL elem) -{ - elem->next = *head; - *head = elem; -} - -inline_size void -wlist_del (WL *head, WL elem) -{ - while (*head) - { - if (expect_true (*head == elem)) - { - *head = elem->next; - break; - } - - head = &(*head)->next; - } -} - -/* internal, faster, version of ev_clear_pending */ -inline_speed void -clear_pending (EV_P_ W w) -{ - if (w->pending) - { - pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; - w->pending = 0; - } -} - -int -ev_clear_pending (EV_P_ void *w) -{ - W w_ = (W)w; - int pending = w_->pending; - - if (expect_true (pending)) - { - ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; - p->w = (W)&pending_w; - w_->pending = 0; - return p->events; - } - else - return 0; -} - -inline_size void -pri_adjust (EV_P_ W w) -{ - int pri = ev_priority (w); - pri = pri < EV_MINPRI ? EV_MINPRI : pri; - pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; - ev_set_priority (w, pri); -} - -inline_speed void -ev_start (EV_P_ W w, int active) -{ - pri_adjust (EV_A_ w); - w->active = active; - ev_ref (EV_A); -} - -inline_size void -ev_stop (EV_P_ W w) -{ - ev_unref (EV_A); - w->active = 0; -} - -/*****************************************************************************/ - -void noinline -ev_io_start (EV_P_ ev_io *w) -{ - int fd = w->fd; - - if (expect_false (ev_is_active (w))) - return; - - assert (("libev: ev_io_start called with negative fd", fd >= 0)); - assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); - - EV_FREQUENT_CHECK; - - ev_start (EV_A_ (W)w, 1); - array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); - wlist_add (&anfds[fd].head, (WL)w); - - fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); - w->events &= ~EV__IOFDSET; - - EV_FREQUENT_CHECK; -} - -void noinline -ev_io_stop (EV_P_ ev_io *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); - - EV_FREQUENT_CHECK; - - wlist_del (&anfds[w->fd].head, (WL)w); - ev_stop (EV_A_ (W)w); - - fd_change (EV_A_ w->fd, EV_ANFD_REIFY); - - EV_FREQUENT_CHECK; -} - -void noinline -ev_timer_start (EV_P_ ev_timer *w) -{ - if (expect_false (ev_is_active (w))) - return; - - ev_at (w) += mn_now; - - assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); - - EV_FREQUENT_CHECK; - - ++timercnt; - ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); - array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); - ANHE_w (timers [ev_active (w)]) = (WT)w; - ANHE_at_cache (timers [ev_active (w)]); - upheap (timers, ev_active (w)); - - EV_FREQUENT_CHECK; - - /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ -} - -void noinline -ev_timer_stop (EV_P_ ev_timer *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - { - int active = ev_active (w); - - assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); - - --timercnt; - - if (expect_true (active < timercnt + HEAP0)) - { - timers [active] = timers [timercnt + HEAP0]; - adjustheap (timers, timercnt, active); - } - } - - ev_at (w) -= mn_now; - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} - -void noinline -ev_timer_again (EV_P_ ev_timer *w) -{ - EV_FREQUENT_CHECK; - - if (ev_is_active (w)) - { - if (w->repeat) - { - ev_at (w) = mn_now + w->repeat; - ANHE_at_cache (timers [ev_active (w)]); - adjustheap (timers, timercnt, ev_active (w)); - } - else - ev_timer_stop (EV_A_ w); - } - else if (w->repeat) - { - ev_at (w) = w->repeat; - ev_timer_start (EV_A_ w); - } - - EV_FREQUENT_CHECK; -} - -ev_tstamp -ev_timer_remaining (EV_P_ ev_timer *w) -{ - return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); -} - -#if EV_PERIODIC_ENABLE -void noinline -ev_periodic_start (EV_P_ ev_periodic *w) -{ - if (expect_false (ev_is_active (w))) - return; - - if (w->reschedule_cb) - ev_at (w) = w->reschedule_cb (w, ev_rt_now); - else if (w->interval) - { - assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); - periodic_recalc (EV_A_ w); - } - else - ev_at (w) = w->offset; - - EV_FREQUENT_CHECK; - - ++periodiccnt; - ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); - array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); - ANHE_w (periodics [ev_active (w)]) = (WT)w; - ANHE_at_cache (periodics [ev_active (w)]); - upheap (periodics, ev_active (w)); - - EV_FREQUENT_CHECK; - - /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ -} - -void noinline -ev_periodic_stop (EV_P_ ev_periodic *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - { - int active = ev_active (w); - - assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); - - --periodiccnt; - - if (expect_true (active < periodiccnt + HEAP0)) - { - periodics [active] = periodics [periodiccnt + HEAP0]; - adjustheap (periodics, periodiccnt, active); - } - } - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} - -void noinline -ev_periodic_again (EV_P_ ev_periodic *w) -{ - /* TODO: use adjustheap and recalculation */ - ev_periodic_stop (EV_A_ w); - ev_periodic_start (EV_A_ w); -} -#endif - -#ifndef SA_RESTART -# define SA_RESTART 0 -#endif - -#if EV_SIGNAL_ENABLE - -void noinline -ev_signal_start (EV_P_ ev_signal *w) -{ - if (expect_false (ev_is_active (w))) - return; - - assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); - -#if EV_MULTIPLICITY - assert (("libev: a signal must not be attached to two different loops", - !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); - - signals [w->signum - 1].loop = EV_A; -#endif - - EV_FREQUENT_CHECK; - -#if EV_USE_SIGNALFD - if (sigfd == -2) - { - sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); - if (sigfd < 0 && errno == EINVAL) - sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ - - if (sigfd >= 0) - { - fd_intern (sigfd); /* doing it twice will not hurt */ - - sigemptyset (&sigfd_set); - - ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); - ev_set_priority (&sigfd_w, EV_MAXPRI); - ev_io_start (EV_A_ &sigfd_w); - ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ - } - } - - if (sigfd >= 0) - { - /* TODO: check .head */ - sigaddset (&sigfd_set, w->signum); - sigprocmask (SIG_BLOCK, &sigfd_set, 0); - - signalfd (sigfd, &sigfd_set, 0); - } -#endif - - ev_start (EV_A_ (W)w, 1); - wlist_add (&signals [w->signum - 1].head, (WL)w); - - if (!((WL)w)->next) -# if EV_USE_SIGNALFD - if (sigfd < 0) /*TODO*/ -# endif - { -# ifdef _WIN32 - evpipe_init (EV_A); - - signal (w->signum, ev_sighandler); -# else - struct sigaction sa; - - evpipe_init (EV_A); - - sa.sa_handler = ev_sighandler; - sigfillset (&sa.sa_mask); - sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ - sigaction (w->signum, &sa, 0); - - if (origflags & EVFLAG_NOSIGMASK) - { - sigemptyset (&sa.sa_mask); - sigaddset (&sa.sa_mask, w->signum); - sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); - } -#endif - } - - EV_FREQUENT_CHECK; -} - -void noinline -ev_signal_stop (EV_P_ ev_signal *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - wlist_del (&signals [w->signum - 1].head, (WL)w); - ev_stop (EV_A_ (W)w); - - if (!signals [w->signum - 1].head) - { -#if EV_MULTIPLICITY - signals [w->signum - 1].loop = 0; /* unattach from signal */ -#endif -#if EV_USE_SIGNALFD - if (sigfd >= 0) - { - sigset_t ss; - - sigemptyset (&ss); - sigaddset (&ss, w->signum); - sigdelset (&sigfd_set, w->signum); - - signalfd (sigfd, &sigfd_set, 0); - sigprocmask (SIG_UNBLOCK, &ss, 0); - } - else -#endif - signal (w->signum, SIG_DFL); - } - - EV_FREQUENT_CHECK; -} - -#endif - -#if EV_CHILD_ENABLE - -void -ev_child_start (EV_P_ ev_child *w) -{ -#if EV_MULTIPLICITY - assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); -#endif - if (expect_false (ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - ev_start (EV_A_ (W)w, 1); - wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); - - EV_FREQUENT_CHECK; -} - -void -ev_child_stop (EV_P_ ev_child *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} - -#endif - -#if EV_STAT_ENABLE - -# ifdef _WIN32 -# undef lstat -# define lstat(a,b) _stati64 (a,b) -# endif - -#define DEF_STAT_INTERVAL 5.0074891 -#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ -#define MIN_STAT_INTERVAL 0.1074891 - -static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); - -#if EV_USE_INOTIFY - -/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ -# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) - -static void noinline -infy_add (EV_P_ ev_stat *w) -{ - w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); - - if (w->wd >= 0) - { - struct statfs sfs; - - /* now local changes will be tracked by inotify, but remote changes won't */ - /* unless the filesystem is known to be local, we therefore still poll */ - /* also do poll on <2.6.25, but with normal frequency */ - - if (!fs_2625) - w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; - else if (!statfs (w->path, &sfs) - && (sfs.f_type == 0x1373 /* devfs */ - || sfs.f_type == 0xEF53 /* ext2/3 */ - || sfs.f_type == 0x3153464a /* jfs */ - || sfs.f_type == 0x52654973 /* reiser3 */ - || sfs.f_type == 0x01021994 /* tempfs */ - || sfs.f_type == 0x58465342 /* xfs */)) - w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ - else - w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ - } - else - { - /* can't use inotify, continue to stat */ - w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; - - /* if path is not there, monitor some parent directory for speedup hints */ - /* note that exceeding the hardcoded path limit is not a correctness issue, */ - /* but an efficiency issue only */ - if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) - { - char path [4096]; - strcpy (path, w->path); - - do - { - int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF - | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); - - char *pend = strrchr (path, '/'); - - if (!pend || pend == path) - break; - - *pend = 0; - w->wd = inotify_add_watch (fs_fd, path, mask); - } - while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); - } - } - - if (w->wd >= 0) - wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); - - /* now re-arm timer, if required */ - if (ev_is_active (&w->timer)) ev_ref (EV_A); - ev_timer_again (EV_A_ &w->timer); - if (ev_is_active (&w->timer)) ev_unref (EV_A); -} - -static void noinline -infy_del (EV_P_ ev_stat *w) -{ - int slot; - int wd = w->wd; - - if (wd < 0) - return; - - w->wd = -2; - slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); - wlist_del (&fs_hash [slot].head, (WL)w); - - /* remove this watcher, if others are watching it, they will rearm */ - inotify_rm_watch (fs_fd, wd); -} - -static void noinline -infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) -{ - if (slot < 0) - /* overflow, need to check for all hash slots */ - for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) - infy_wd (EV_A_ slot, wd, ev); - else - { - WL w_; - - for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) - { - ev_stat *w = (ev_stat *)w_; - w_ = w_->next; /* lets us remove this watcher and all before it */ - - if (w->wd == wd || wd == -1) - { - if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) - { - wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); - w->wd = -1; - infy_add (EV_A_ w); /* re-add, no matter what */ - } - - stat_timer_cb (EV_A_ &w->timer, 0); - } - } - } -} - -static void -infy_cb (EV_P_ ev_io *w, int revents) -{ - char buf [EV_INOTIFY_BUFSIZE]; - int ofs; - int len = read (fs_fd, buf, sizeof (buf)); - - for (ofs = 0; ofs < len; ) - { - struct inotify_event *ev = (struct inotify_event *)(buf + ofs); - infy_wd (EV_A_ ev->wd, ev->wd, ev); - ofs += sizeof (struct inotify_event) + ev->len; - } -} - -inline_size void -ev_check_2625 (EV_P) -{ - /* kernels < 2.6.25 are borked - * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html - */ - if (ev_linux_version () < 0x020619) - return; - - fs_2625 = 1; -} - -inline_size int -infy_newfd (void) -{ -#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) - int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); - if (fd >= 0) - return fd; -#endif - return inotify_init (); -} - -inline_size void -infy_init (EV_P) -{ - if (fs_fd != -2) - return; - - fs_fd = -1; - - ev_check_2625 (EV_A); - - fs_fd = infy_newfd (); - - if (fs_fd >= 0) - { - fd_intern (fs_fd); - ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); - ev_set_priority (&fs_w, EV_MAXPRI); - ev_io_start (EV_A_ &fs_w); - ev_unref (EV_A); - } -} - -inline_size void -infy_fork (EV_P) -{ - int slot; - - if (fs_fd < 0) - return; - - ev_ref (EV_A); - ev_io_stop (EV_A_ &fs_w); - close (fs_fd); - fs_fd = infy_newfd (); - - if (fs_fd >= 0) - { - fd_intern (fs_fd); - ev_io_set (&fs_w, fs_fd, EV_READ); - ev_io_start (EV_A_ &fs_w); - ev_unref (EV_A); - } - - for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) - { - WL w_ = fs_hash [slot].head; - fs_hash [slot].head = 0; - - while (w_) - { - ev_stat *w = (ev_stat *)w_; - w_ = w_->next; /* lets us add this watcher */ - - w->wd = -1; - - if (fs_fd >= 0) - infy_add (EV_A_ w); /* re-add, no matter what */ - else - { - w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; - if (ev_is_active (&w->timer)) ev_ref (EV_A); - ev_timer_again (EV_A_ &w->timer); - if (ev_is_active (&w->timer)) ev_unref (EV_A); - } - } - } -} - -#endif - -#ifdef _WIN32 -# define EV_LSTAT(p,b) _stati64 (p, b) -#else -# define EV_LSTAT(p,b) lstat (p, b) -#endif - -void -ev_stat_stat (EV_P_ ev_stat *w) -{ - if (lstat (w->path, &w->attr) < 0) - w->attr.st_nlink = 0; - else if (!w->attr.st_nlink) - w->attr.st_nlink = 1; -} - -static void noinline -stat_timer_cb (EV_P_ ev_timer *w_, int revents) -{ - ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); - - ev_statdata prev = w->attr; - ev_stat_stat (EV_A_ w); - - /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ - if ( - prev.st_dev != w->attr.st_dev - || prev.st_ino != w->attr.st_ino - || prev.st_mode != w->attr.st_mode - || prev.st_nlink != w->attr.st_nlink - || prev.st_uid != w->attr.st_uid - || prev.st_gid != w->attr.st_gid - || prev.st_rdev != w->attr.st_rdev - || prev.st_size != w->attr.st_size - || prev.st_atime != w->attr.st_atime - || prev.st_mtime != w->attr.st_mtime - || prev.st_ctime != w->attr.st_ctime - ) { - /* we only update w->prev on actual differences */ - /* in case we test more often than invoke the callback, */ - /* to ensure that prev is always different to attr */ - w->prev = prev; - - #if EV_USE_INOTIFY - if (fs_fd >= 0) - { - infy_del (EV_A_ w); - infy_add (EV_A_ w); - ev_stat_stat (EV_A_ w); /* avoid race... */ - } - #endif - - ev_feed_event (EV_A_ w, EV_STAT); - } -} - -void -ev_stat_start (EV_P_ ev_stat *w) -{ - if (expect_false (ev_is_active (w))) - return; - - ev_stat_stat (EV_A_ w); - - if (w->interval < MIN_STAT_INTERVAL && w->interval) - w->interval = MIN_STAT_INTERVAL; - - ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); - ev_set_priority (&w->timer, ev_priority (w)); - -#if EV_USE_INOTIFY - infy_init (EV_A); - - if (fs_fd >= 0) - infy_add (EV_A_ w); - else -#endif - { - ev_timer_again (EV_A_ &w->timer); - ev_unref (EV_A); - } - - ev_start (EV_A_ (W)w, 1); - - EV_FREQUENT_CHECK; -} - -void -ev_stat_stop (EV_P_ ev_stat *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - -#if EV_USE_INOTIFY - infy_del (EV_A_ w); -#endif - - if (ev_is_active (&w->timer)) - { - ev_ref (EV_A); - ev_timer_stop (EV_A_ &w->timer); - } - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} -#endif - -#if EV_IDLE_ENABLE -void -ev_idle_start (EV_P_ ev_idle *w) -{ - if (expect_false (ev_is_active (w))) - return; - - pri_adjust (EV_A_ (W)w); - - EV_FREQUENT_CHECK; - - { - int active = ++idlecnt [ABSPRI (w)]; - - ++idleall; - ev_start (EV_A_ (W)w, active); - - array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); - idles [ABSPRI (w)][active - 1] = w; - } - - EV_FREQUENT_CHECK; -} - -void -ev_idle_stop (EV_P_ ev_idle *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - { - int active = ev_active (w); - - idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; - ev_active (idles [ABSPRI (w)][active - 1]) = active; - - ev_stop (EV_A_ (W)w); - --idleall; - } - - EV_FREQUENT_CHECK; -} -#endif - -#if EV_PREPARE_ENABLE -void -ev_prepare_start (EV_P_ ev_prepare *w) -{ - if (expect_false (ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - ev_start (EV_A_ (W)w, ++preparecnt); - array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); - prepares [preparecnt - 1] = w; - - EV_FREQUENT_CHECK; -} - -void -ev_prepare_stop (EV_P_ ev_prepare *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - { - int active = ev_active (w); - - prepares [active - 1] = prepares [--preparecnt]; - ev_active (prepares [active - 1]) = active; - } - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} -#endif - -#if EV_CHECK_ENABLE -void -ev_check_start (EV_P_ ev_check *w) -{ - if (expect_false (ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - ev_start (EV_A_ (W)w, ++checkcnt); - array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); - checks [checkcnt - 1] = w; - - EV_FREQUENT_CHECK; -} - -void -ev_check_stop (EV_P_ ev_check *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - { - int active = ev_active (w); - - checks [active - 1] = checks [--checkcnt]; - ev_active (checks [active - 1]) = active; - } - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} -#endif - -#if EV_EMBED_ENABLE -void noinline -ev_embed_sweep (EV_P_ ev_embed *w) -{ - ev_run (w->other, EVRUN_NOWAIT); -} - -static void -embed_io_cb (EV_P_ ev_io *io, int revents) -{ - ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); - - if (ev_cb (w)) - ev_feed_event (EV_A_ (W)w, EV_EMBED); - else - ev_run (w->other, EVRUN_NOWAIT); -} - -static void -embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) -{ - ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); - - { - EV_P = w->other; - - while (fdchangecnt) - { - fd_reify (EV_A); - ev_run (EV_A_ EVRUN_NOWAIT); - } - } -} - -static void -embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) -{ - ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); - - ev_embed_stop (EV_A_ w); - - { - EV_P = w->other; - - ev_loop_fork (EV_A); - ev_run (EV_A_ EVRUN_NOWAIT); - } - - ev_embed_start (EV_A_ w); -} - -#if 0 -static void -embed_idle_cb (EV_P_ ev_idle *idle, int revents) -{ - ev_idle_stop (EV_A_ idle); -} -#endif - -void -ev_embed_start (EV_P_ ev_embed *w) -{ - if (expect_false (ev_is_active (w))) - return; - - { - EV_P = w->other; - assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); - ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); - } - - EV_FREQUENT_CHECK; - - ev_set_priority (&w->io, ev_priority (w)); - ev_io_start (EV_A_ &w->io); - - ev_prepare_init (&w->prepare, embed_prepare_cb); - ev_set_priority (&w->prepare, EV_MINPRI); - ev_prepare_start (EV_A_ &w->prepare); - - ev_fork_init (&w->fork, embed_fork_cb); - ev_fork_start (EV_A_ &w->fork); - - /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ - - ev_start (EV_A_ (W)w, 1); - - EV_FREQUENT_CHECK; -} - -void -ev_embed_stop (EV_P_ ev_embed *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - ev_io_stop (EV_A_ &w->io); - ev_prepare_stop (EV_A_ &w->prepare); - ev_fork_stop (EV_A_ &w->fork); - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} -#endif - -#if EV_FORK_ENABLE -void -ev_fork_start (EV_P_ ev_fork *w) -{ - if (expect_false (ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - ev_start (EV_A_ (W)w, ++forkcnt); - array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); - forks [forkcnt - 1] = w; - - EV_FREQUENT_CHECK; -} - -void -ev_fork_stop (EV_P_ ev_fork *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - { - int active = ev_active (w); - - forks [active - 1] = forks [--forkcnt]; - ev_active (forks [active - 1]) = active; - } - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} -#endif - -#if EV_CLEANUP_ENABLE -void -ev_cleanup_start (EV_P_ ev_cleanup *w) -{ - if (expect_false (ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - ev_start (EV_A_ (W)w, ++cleanupcnt); - array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); - cleanups [cleanupcnt - 1] = w; - - /* cleanup watchers should never keep a refcount on the loop */ - ev_unref (EV_A); - EV_FREQUENT_CHECK; -} - -void -ev_cleanup_stop (EV_P_ ev_cleanup *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - ev_ref (EV_A); - - { - int active = ev_active (w); - - cleanups [active - 1] = cleanups [--cleanupcnt]; - ev_active (cleanups [active - 1]) = active; - } - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} -#endif - -#if EV_ASYNC_ENABLE -void -ev_async_start (EV_P_ ev_async *w) -{ - if (expect_false (ev_is_active (w))) - return; - - w->sent = 0; - - evpipe_init (EV_A); - - EV_FREQUENT_CHECK; - - ev_start (EV_A_ (W)w, ++asynccnt); - array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); - asyncs [asynccnt - 1] = w; - - EV_FREQUENT_CHECK; -} - -void -ev_async_stop (EV_P_ ev_async *w) -{ - clear_pending (EV_A_ (W)w); - if (expect_false (!ev_is_active (w))) - return; - - EV_FREQUENT_CHECK; - - { - int active = ev_active (w); - - asyncs [active - 1] = asyncs [--asynccnt]; - ev_active (asyncs [active - 1]) = active; - } - - ev_stop (EV_A_ (W)w); - - EV_FREQUENT_CHECK; -} - -void -ev_async_send (EV_P_ ev_async *w) -{ - w->sent = 1; - evpipe_write (EV_A_ &async_pending); -} -#endif - -/*****************************************************************************/ - -struct ev_once -{ - ev_io io; - ev_timer to; - void (*cb)(int revents, void *arg); - void *arg; -}; - -static void -once_cb (EV_P_ struct ev_once *once, int revents) -{ - void (*cb)(int revents, void *arg) = once->cb; - void *arg = once->arg; - - ev_io_stop (EV_A_ &once->io); - ev_timer_stop (EV_A_ &once->to); - ev_free (once); - - cb (revents, arg); -} - -static void -once_cb_io (EV_P_ ev_io *w, int revents) -{ - struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); - - once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); -} - -static void -once_cb_to (EV_P_ ev_timer *w, int revents) -{ - struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); - - once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); -} - -void -ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) -{ - struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); - - if (expect_false (!once)) - { - cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); - return; - } - - once->cb = cb; - once->arg = arg; - - ev_init (&once->io, once_cb_io); - if (fd >= 0) - { - ev_io_set (&once->io, fd, events); - ev_io_start (EV_A_ &once->io); - } - - ev_init (&once->to, once_cb_to); - if (timeout >= 0.) - { - ev_timer_set (&once->to, timeout, 0.); - ev_timer_start (EV_A_ &once->to); - } -} - -/*****************************************************************************/ - -#if EV_WALK_ENABLE -void -ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) -{ - int i, j; - ev_watcher_list *wl, *wn; - - if (types & (EV_IO | EV_EMBED)) - for (i = 0; i < anfdmax; ++i) - for (wl = anfds [i].head; wl; ) - { - wn = wl->next; - -#if EV_EMBED_ENABLE - if (ev_cb ((ev_io *)wl) == embed_io_cb) - { - if (types & EV_EMBED) - cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); - } - else -#endif -#if EV_USE_INOTIFY - if (ev_cb ((ev_io *)wl) == infy_cb) - ; - else -#endif - if ((ev_io *)wl != &pipe_w) - if (types & EV_IO) - cb (EV_A_ EV_IO, wl); - - wl = wn; - } - - if (types & (EV_TIMER | EV_STAT)) - for (i = timercnt + HEAP0; i-- > HEAP0; ) -#if EV_STAT_ENABLE - /*TODO: timer is not always active*/ - if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) - { - if (types & EV_STAT) - cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); - } - else -#endif - if (types & EV_TIMER) - cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); - -#if EV_PERIODIC_ENABLE - if (types & EV_PERIODIC) - for (i = periodiccnt + HEAP0; i-- > HEAP0; ) - cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); -#endif - -#if EV_IDLE_ENABLE - if (types & EV_IDLE) - for (j = NUMPRI; i--; ) - for (i = idlecnt [j]; i--; ) - cb (EV_A_ EV_IDLE, idles [j][i]); -#endif - -#if EV_FORK_ENABLE - if (types & EV_FORK) - for (i = forkcnt; i--; ) - if (ev_cb (forks [i]) != embed_fork_cb) - cb (EV_A_ EV_FORK, forks [i]); -#endif - -#if EV_ASYNC_ENABLE - if (types & EV_ASYNC) - for (i = asynccnt; i--; ) - cb (EV_A_ EV_ASYNC, asyncs [i]); -#endif - -#if EV_PREPARE_ENABLE - if (types & EV_PREPARE) - for (i = preparecnt; i--; ) -# if EV_EMBED_ENABLE - if (ev_cb (prepares [i]) != embed_prepare_cb) -# endif - cb (EV_A_ EV_PREPARE, prepares [i]); -#endif - -#if EV_CHECK_ENABLE - if (types & EV_CHECK) - for (i = checkcnt; i--; ) - cb (EV_A_ EV_CHECK, checks [i]); -#endif - -#if EV_SIGNAL_ENABLE - if (types & EV_SIGNAL) - for (i = 0; i < EV_NSIG - 1; ++i) - for (wl = signals [i].head; wl; ) - { - wn = wl->next; - cb (EV_A_ EV_SIGNAL, wl); - wl = wn; - } -#endif - -#if EV_CHILD_ENABLE - if (types & EV_CHILD) - for (i = (EV_PID_HASHSIZE); i--; ) - for (wl = childs [i]; wl; ) - { - wn = wl->next; - cb (EV_A_ EV_CHILD, wl); - wl = wn; - } -#endif -/* EV_STAT 0x00001000 /* stat data changed */ -/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ -} -#endif - -#if EV_MULTIPLICITY - #include "ev_wrap.h" -#endif - -EV_CPP(}) - diff --git a/deps/uv/ev/ev.h b/deps/uv/ev/ev.h deleted file mode 100644 index 6fb8083413..0000000000 --- a/deps/uv/ev/ev.h +++ /dev/null @@ -1,829 +0,0 @@ -/* - * libev native API header - * - * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -#ifndef EV_H_ -#define EV_H_ - -#ifdef __cplusplus -# define EV_CPP(x) x -#else -# define EV_CPP(x) -#endif - -EV_CPP(extern "C" {) - -/*****************************************************************************/ - -/* pre-4.0 compatibility */ -#ifndef EV_COMPAT3 -# define EV_COMPAT3 1 -#endif - -#ifndef EV_FEATURES -# define EV_FEATURES 0x7f -#endif - -#define EV_FEATURE_CODE ((EV_FEATURES) & 1) -#define EV_FEATURE_DATA ((EV_FEATURES) & 2) -#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4) -#define EV_FEATURE_API ((EV_FEATURES) & 8) -#define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16) -#define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32) -#define EV_FEATURE_OS ((EV_FEATURES) & 64) - -/* these priorities are inclusive, higher priorities will be invoked earlier */ -#ifndef EV_MINPRI -# define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0) -#endif -#ifndef EV_MAXPRI -# define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0) -#endif - -#ifndef EV_MULTIPLICITY -# define EV_MULTIPLICITY EV_FEATURE_CONFIG -#endif - -#ifndef EV_PERIODIC_ENABLE -# define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_STAT_ENABLE -# define EV_STAT_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_PREPARE_ENABLE -# define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_CHECK_ENABLE -# define EV_CHECK_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_IDLE_ENABLE -# define EV_IDLE_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_FORK_ENABLE -# define EV_FORK_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_CLEANUP_ENABLE -# define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_SIGNAL_ENABLE -# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_CHILD_ENABLE -# ifdef _WIN32 -# define EV_CHILD_ENABLE 0 -# else -# define EV_CHILD_ENABLE EV_FEATURE_WATCHERS -#endif -#endif - -#ifndef EV_ASYNC_ENABLE -# define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_EMBED_ENABLE -# define EV_EMBED_ENABLE EV_FEATURE_WATCHERS -#endif - -#ifndef EV_WALK_ENABLE -# define EV_WALK_ENABLE 0 /* not yet */ -#endif - -/*****************************************************************************/ - -#if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE -# undef EV_SIGNAL_ENABLE -# define EV_SIGNAL_ENABLE 1 -#endif - -/*****************************************************************************/ - -typedef double ev_tstamp; - -#ifndef EV_ATOMIC_T -# include -# define EV_ATOMIC_T sig_atomic_t volatile -#endif - -#if EV_STAT_ENABLE -# ifdef _WIN32 -# include -# include -# endif -# include -#endif - -/* support multiple event loops? */ -#if EV_MULTIPLICITY -struct ev_loop; -# define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */ -# define EV_P_ EV_P, /* a loop as first of multiple parameters */ -# define EV_A loop /* a loop as sole argument to a function call */ -# define EV_A_ EV_A, /* a loop as first of multiple arguments */ -# define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */ -# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */ -# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */ -# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */ -#else -# define EV_P void -# define EV_P_ -# define EV_A -# define EV_A_ -# define EV_DEFAULT -# define EV_DEFAULT_ -# define EV_DEFAULT_UC -# define EV_DEFAULT_UC_ -# undef EV_EMBED_ENABLE -#endif - -/* EV_INLINE is used for functions in header files */ -#if __STDC_VERSION__ >= 199901L && __GNUC__ >= 3 -# define EV_INLINE static inline -#else -# define EV_INLINE static -#endif - -/* EV_PROTOTYPES can be used to switch of prototype declarations */ -#ifndef EV_PROTOTYPES -# define EV_PROTOTYPES 1 -#endif - -/*****************************************************************************/ - -#define EV_VERSION_MAJOR 4 -#define EV_VERSION_MINOR 4 - -/* eventmask, revents, events... */ -enum { - EV_UNDEF = 0xFFFFFFFF, /* guaranteed to be invalid */ - EV_NONE = 0x00, /* no events */ - EV_READ = 0x01, /* ev_io detected read will not block */ - EV_WRITE = 0x02, /* ev_io detected write will not block */ - EV__IOFDSET = 0x80, /* internal use only */ - EV_IO = EV_READ, /* alias for type-detection */ - EV_TIMER = 0x00000100, /* timer timed out */ -#if EV_COMPAT3 - EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */ -#endif - EV_PERIODIC = 0x00000200, /* periodic timer timed out */ - EV_SIGNAL = 0x00000400, /* signal was received */ - EV_CHILD = 0x00000800, /* child/pid had status change */ - EV_STAT = 0x00001000, /* stat data changed */ - EV_IDLE = 0x00002000, /* event loop is idling */ - EV_PREPARE = 0x00004000, /* event loop about to poll */ - EV_CHECK = 0x00008000, /* event loop finished poll */ - EV_EMBED = 0x00010000, /* embedded event loop needs sweep */ - EV_FORK = 0x00020000, /* event loop resumed in child */ - EV_CLEANUP = 0x00040000, /* event loop resumed in child */ - EV_ASYNC = 0x00080000, /* async intra-loop signal */ - EV_CUSTOM = 0x01000000, /* for use by user code */ - EV_ERROR = 0x80000000 /* sent when an error occurs */ -}; - -/* can be used to add custom fields to all watchers, while losing binary compatibility */ -#ifndef EV_COMMON -# define EV_COMMON void *data; -#endif - -#ifndef EV_CB_DECLARE -# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); -#endif -#ifndef EV_CB_INVOKE -# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) -#endif - -/* not official, do not use */ -#define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents) - -/* - * struct member types: - * private: you may look at them, but not change them, - * and they might not mean anything to you. - * ro: can be read anytime, but only changed when the watcher isn't active. - * rw: can be read and modified anytime, even when the watcher is active. - * - * some internal details that might be helpful for debugging: - * - * active is either 0, which means the watcher is not active, - * or the array index of the watcher (periodics, timers) - * or the array index + 1 (most other watchers) - * or simply 1 for watchers that aren't in some array. - * pending is either 0, in which case the watcher isn't, - * or the array index + 1 in the pendings array. - */ - -#if EV_MINPRI == EV_MAXPRI -# define EV_DECL_PRIORITY -#elif !defined (EV_DECL_PRIORITY) -# define EV_DECL_PRIORITY int priority; -#endif - -/* shared by all watchers */ -#define EV_WATCHER(type) \ - int active; /* private */ \ - int pending; /* private */ \ - EV_DECL_PRIORITY /* private */ \ - EV_COMMON /* rw */ \ - EV_CB_DECLARE (type) /* private */ - -#define EV_WATCHER_LIST(type) \ - EV_WATCHER (type) \ - struct ev_watcher_list *next; /* private */ - -#define EV_WATCHER_TIME(type) \ - EV_WATCHER (type) \ - ev_tstamp at; /* private */ - -/* base class, nothing to see here unless you subclass */ -typedef struct ev_watcher -{ - EV_WATCHER (ev_watcher) -} ev_watcher; - -/* base class, nothing to see here unless you subclass */ -typedef struct ev_watcher_list -{ - EV_WATCHER_LIST (ev_watcher_list) -} ev_watcher_list; - -/* base class, nothing to see here unless you subclass */ -typedef struct ev_watcher_time -{ - EV_WATCHER_TIME (ev_watcher_time) -} ev_watcher_time; - -/* invoked when fd is either EV_READable or EV_WRITEable */ -/* revent EV_READ, EV_WRITE */ -typedef struct ev_io -{ - EV_WATCHER_LIST (ev_io) - - int fd; /* ro */ - int events; /* ro */ -} ev_io; - -/* invoked after a specific time, repeatable (based on monotonic clock) */ -/* revent EV_TIMEOUT */ -typedef struct ev_timer -{ - EV_WATCHER_TIME (ev_timer) - - ev_tstamp repeat; /* rw */ -} ev_timer; - -/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ -/* revent EV_PERIODIC */ -typedef struct ev_periodic -{ - EV_WATCHER_TIME (ev_periodic) - - ev_tstamp offset; /* rw */ - ev_tstamp interval; /* rw */ - ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ -} ev_periodic; - -/* invoked when the given signal has been received */ -/* revent EV_SIGNAL */ -typedef struct ev_signal -{ - EV_WATCHER_LIST (ev_signal) - - int signum; /* ro */ -} ev_signal; - -/* invoked when sigchld is received and waitpid indicates the given pid */ -/* revent EV_CHILD */ -/* does not support priorities */ -typedef struct ev_child -{ - EV_WATCHER_LIST (ev_child) - - int flags; /* private */ - int pid; /* ro */ - int rpid; /* rw, holds the received pid */ - int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ -} ev_child; - -#if EV_STAT_ENABLE -/* st_nlink = 0 means missing file or other error */ -# ifdef _WIN32 -typedef struct _stati64 ev_statdata; -# else -typedef struct stat ev_statdata; -# endif - -/* invoked each time the stat data changes for a given path */ -/* revent EV_STAT */ -typedef struct ev_stat -{ - EV_WATCHER_LIST (ev_stat) - - ev_timer timer; /* private */ - ev_tstamp interval; /* ro */ - const char *path; /* ro */ - ev_statdata prev; /* ro */ - ev_statdata attr; /* ro */ - - int wd; /* wd for inotify, fd for kqueue */ -} ev_stat; -#endif - -#if EV_IDLE_ENABLE -/* invoked when the nothing else needs to be done, keeps the process from blocking */ -/* revent EV_IDLE */ -typedef struct ev_idle -{ - EV_WATCHER (ev_idle) -} ev_idle; -#endif - -/* invoked for each run of the mainloop, just before the blocking call */ -/* you can still change events in any way you like */ -/* revent EV_PREPARE */ -typedef struct ev_prepare -{ - EV_WATCHER (ev_prepare) -} ev_prepare; - -/* invoked for each run of the mainloop, just after the blocking call */ -/* revent EV_CHECK */ -typedef struct ev_check -{ - EV_WATCHER (ev_check) -} ev_check; - -#if EV_FORK_ENABLE -/* the callback gets invoked before check in the child process when a fork was detected */ -/* revent EV_FORK */ -typedef struct ev_fork -{ - EV_WATCHER (ev_fork) -} ev_fork; -#endif - -#if EV_CLEANUP_ENABLE -/* is invoked just before the loop gets destroyed */ -/* revent EV_CLEANUP */ -typedef struct ev_cleanup -{ - EV_WATCHER (ev_cleanup) -} ev_cleanup; -#endif - -#if EV_EMBED_ENABLE -/* used to embed an event loop inside another */ -/* the callback gets invoked when the event loop has handled events, and can be 0 */ -typedef struct ev_embed -{ - EV_WATCHER (ev_embed) - - struct ev_loop *other; /* ro */ - ev_io io; /* private */ - ev_prepare prepare; /* private */ - ev_check check; /* unused */ - ev_timer timer; /* unused */ - ev_periodic periodic; /* unused */ - ev_idle idle; /* unused */ - ev_fork fork; /* private */ -#if EV_CLEANUP_ENABLE - ev_cleanup cleanup; /* unused */ -#endif -} ev_embed; -#endif - -#if EV_ASYNC_ENABLE -/* invoked when somebody calls ev_async_send on the watcher */ -/* revent EV_ASYNC */ -typedef struct ev_async -{ - EV_WATCHER (ev_async) - - EV_ATOMIC_T sent; /* private */ -} ev_async; - -# define ev_async_pending(w) (+(w)->sent) -#endif - -/* the presence of this union forces similar struct layout */ -union ev_any_watcher -{ - struct ev_watcher w; - struct ev_watcher_list wl; - - struct ev_io io; - struct ev_timer timer; - struct ev_periodic periodic; - struct ev_signal signal; - struct ev_child child; -#if EV_STAT_ENABLE - struct ev_stat stat; -#endif -#if EV_IDLE_ENABLE - struct ev_idle idle; -#endif - struct ev_prepare prepare; - struct ev_check check; -#if EV_FORK_ENABLE - struct ev_fork fork; -#endif -#if EV_CLEANUP_ENABLE - struct ev_cleanup cleanup; -#endif -#if EV_EMBED_ENABLE - struct ev_embed embed; -#endif -#if EV_ASYNC_ENABLE - struct ev_async async; -#endif -}; - -/* flag bits for ev_default_loop and ev_loop_new */ -enum { - /* the default */ - EVFLAG_AUTO = 0x00000000U, /* not quite a mask */ - /* flag bits */ - EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */ - EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */ - /* debugging/feature disable */ - EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */ -#if EV_COMPAT3 - EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */ -#endif - EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */ - EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */ -}; - -/* method bits to be ored together */ -enum { - EVBACKEND_SELECT = 0x00000001U, /* about anywhere */ - EVBACKEND_POLL = 0x00000002U, /* !win */ - EVBACKEND_EPOLL = 0x00000004U, /* linux */ - EVBACKEND_KQUEUE = 0x00000008U, /* bsd */ - EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */ - EVBACKEND_PORT = 0x00000020U, /* solaris 10 */ - EVBACKEND_ALL = 0x0000003FU, /* all known backends */ - EVBACKEND_MASK = 0x0000FFFFU /* all future backends */ -}; - -#if EV_PROTOTYPES -int ev_version_major (void); -int ev_version_minor (void); - -unsigned int ev_supported_backends (void); -unsigned int ev_recommended_backends (void); -unsigned int ev_embeddable_backends (void); - -ev_tstamp ev_time (void); -void ev_sleep (ev_tstamp delay); /* sleep for a while */ - -/* Sets the allocation function to use, works like realloc. - * It is used to allocate and free memory. - * If it returns zero when memory needs to be allocated, the library might abort - * or take some potentially destructive action. - * The default is your system realloc function. - */ -void ev_set_allocator (void *(*cb)(void *ptr, long size)); - -/* set the callback function to call on a - * retryable syscall error - * (such as failed select, poll, epoll_wait) - */ -void ev_set_syserr_cb (void (*cb)(const char *msg)); - -#if EV_MULTIPLICITY - -/* the default loop is the only one that handles signals and child watchers */ -/* you can call this as often as you like */ -struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)); - -EV_INLINE struct ev_loop * -ev_default_loop_uc_ (void) -{ - extern struct ev_loop *ev_default_loop_ptr; - - return ev_default_loop_ptr; -} - -EV_INLINE int -ev_is_default_loop (EV_P) -{ - return EV_A == EV_DEFAULT_UC; -} - -/* create and destroy alternative loops that don't handle signals */ -struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)); - -ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ - -#else - -int ev_default_loop (unsigned int flags EV_CPP (= 0)); /* returns true when successful */ - -EV_INLINE ev_tstamp -ev_now (void) -{ - extern ev_tstamp ev_rt_now; - - return ev_rt_now; -} - -/* looks weird, but ev_is_default_loop (EV_A) still works if this exists */ -EV_INLINE int -ev_is_default_loop (void) -{ - return 1; -} - -#endif /* multiplicity */ - -/* destroy event loops, also works for the default loop */ -void ev_loop_destroy (EV_P); - -/* this needs to be called after fork, to duplicate the loop */ -/* when you want to re-use it in the child */ -/* you can call it in either the parent or the child */ -/* you can actually call it at any time, anywhere :) */ -void ev_loop_fork (EV_P); - -unsigned int ev_backend (EV_P); /* backend in use by loop */ - -void ev_now_update (EV_P); /* update event loop time */ - -#if EV_WALK_ENABLE -/* walk (almost) all watchers in the loop of a given type, invoking the */ -/* callback on every such watcher. The callback might stop the watcher, */ -/* but do nothing else with the loop */ -void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); -#endif - -#endif /* prototypes */ - -/* ev_run flags values */ -enum { - EVRUN_NOWAIT = 1, /* do not block/wait */ - EVRUN_ONCE = 2 /* block *once* only */ -}; - -/* ev_break how values */ -enum { - EVBREAK_CANCEL = 0, /* undo unloop */ - EVBREAK_ONE = 1, /* unloop once */ - EVBREAK_ALL = 2 /* unloop all loops */ -}; - -#if EV_PROTOTYPES -void ev_run (EV_P_ int flags EV_CPP (= 0)); -void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)); /* break out of the loop */ - -/* - * ref/unref can be used to add or remove a refcount on the mainloop. every watcher - * keeps one reference. if you have a long-running watcher you never unregister that - * should not keep ev_loop from running, unref() after starting, and ref() before stopping. - */ -void ev_ref (EV_P); -void ev_unref (EV_P); - -/* - * convenience function, wait for a single event, without registering an event watcher - * if timeout is < 0, do wait indefinitely - */ -void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); - -# if EV_FEATURE_API -unsigned int ev_iteration (EV_P); /* number of loop iterations */ -unsigned int ev_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ -void ev_verify (EV_P); /* abort if loop data corrupted */ - -void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ -void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ - -/* advanced stuff for threading etc. support, see docs */ -void ev_set_userdata (EV_P_ void *data); -void *ev_userdata (EV_P); -void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); -void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); - -unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ -void ev_invoke_pending (EV_P); /* invoke all pending watchers */ - -/* - * stop/start the timer handling. - */ -void ev_suspend (EV_P); -void ev_resume (EV_P); -#endif - -#endif - -/* these may evaluate ev multiple times, and the other arguments at most once */ -/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ -#define ev_init(ev,cb_) do { \ - ((ev_watcher *)(void *)(ev))->active = \ - ((ev_watcher *)(void *)(ev))->pending = 0; \ - ev_set_priority ((ev), 0); \ - ev_set_cb ((ev), cb_); \ -} while (0) - -#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) -#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) -#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) -#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) -#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) -#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) -#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) -#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */ -#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */ - -#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) -#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) -#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) -#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) -#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) -#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) -#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) -#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) -#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) -#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) -#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) -#define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0) -#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) - -#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ -#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ - -#define ev_cb(ev) (ev)->cb /* rw */ - -#if EV_MINPRI == EV_MAXPRI -# define ev_priority(ev) ((ev), EV_MINPRI) -# define ev_set_priority(ev,pri) ((ev), (pri)) -#else -# define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) -# define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) -#endif - -#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) - -#ifndef ev_set_cb -# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) -#endif - -/* stopping (enabling, adding) a watcher does nothing if it is already running */ -/* stopping (disabling, deleting) a watcher does nothing unless its already running */ -#if EV_PROTOTYPES - -/* feeds an event into a watcher as if the event actually occured */ -/* accepts any ev_watcher type */ -void ev_feed_event (EV_P_ void *w, int revents); -void ev_feed_fd_event (EV_P_ int fd, int revents); -#if EV_SIGNAL_ENABLE -void ev_feed_signal (int signum); -void ev_feed_signal_event (EV_P_ int signum); -#endif -void ev_invoke (EV_P_ void *w, int revents); -int ev_clear_pending (EV_P_ void *w); - -void ev_io_start (EV_P_ ev_io *w); -void ev_io_stop (EV_P_ ev_io *w); - -void ev_timer_start (EV_P_ ev_timer *w); -void ev_timer_stop (EV_P_ ev_timer *w); -/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ -void ev_timer_again (EV_P_ ev_timer *w); -/* return remaining time */ -ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); - -#if EV_PERIODIC_ENABLE -void ev_periodic_start (EV_P_ ev_periodic *w); -void ev_periodic_stop (EV_P_ ev_periodic *w); -void ev_periodic_again (EV_P_ ev_periodic *w); -#endif - -/* only supported in the default loop */ -#if EV_SIGNAL_ENABLE -void ev_signal_start (EV_P_ ev_signal *w); -void ev_signal_stop (EV_P_ ev_signal *w); -#endif - -/* only supported in the default loop */ -# if EV_CHILD_ENABLE -void ev_child_start (EV_P_ ev_child *w); -void ev_child_stop (EV_P_ ev_child *w); -# endif - -# if EV_STAT_ENABLE -void ev_stat_start (EV_P_ ev_stat *w); -void ev_stat_stop (EV_P_ ev_stat *w); -void ev_stat_stat (EV_P_ ev_stat *w); -# endif - -# if EV_IDLE_ENABLE -void ev_idle_start (EV_P_ ev_idle *w); -void ev_idle_stop (EV_P_ ev_idle *w); -# endif - -#if EV_PREPARE_ENABLE -void ev_prepare_start (EV_P_ ev_prepare *w); -void ev_prepare_stop (EV_P_ ev_prepare *w); -#endif - -#if EV_CHECK_ENABLE -void ev_check_start (EV_P_ ev_check *w); -void ev_check_stop (EV_P_ ev_check *w); -#endif - -# if EV_FORK_ENABLE -void ev_fork_start (EV_P_ ev_fork *w); -void ev_fork_stop (EV_P_ ev_fork *w); -# endif - -# if EV_CLEANUP_ENABLE -void ev_cleanup_start (EV_P_ ev_cleanup *w); -void ev_cleanup_stop (EV_P_ ev_cleanup *w); -# endif - -# if EV_EMBED_ENABLE -/* only supported when loop to be embedded is in fact embeddable */ -void ev_embed_start (EV_P_ ev_embed *w); -void ev_embed_stop (EV_P_ ev_embed *w); -void ev_embed_sweep (EV_P_ ev_embed *w); -# endif - -# if EV_ASYNC_ENABLE -void ev_async_start (EV_P_ ev_async *w); -void ev_async_stop (EV_P_ ev_async *w); -void ev_async_send (EV_P_ ev_async *w); -# endif - -#if EV_COMPAT3 - #define EVLOOP_NONBLOCK EVRUN_NOWAIT - #define EVLOOP_ONESHOT EVRUN_ONCE - #define EVUNLOOP_CANCEL EVBREAK_CANCEL - #define EVUNLOOP_ONE EVBREAK_ONE - #define EVUNLOOP_ALL EVBREAK_ALL - #if EV_PROTOTYPES - EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); } - EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); } - EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); } - EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); } - #if EV_FEATURE_API - EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); } - EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); } - EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); } - #endif - #endif -#else - typedef struct ev_loop ev_loop; -#endif - -#endif - -EV_CPP(}) - -#endif - diff --git a/deps/uv/ev/ev.pod b/deps/uv/ev/ev.pod deleted file mode 100644 index 4bbef1fcf2..0000000000 --- a/deps/uv/ev/ev.pod +++ /dev/null @@ -1,5243 +0,0 @@ -=head1 NAME - -libev - a high performance full-featured event loop written in C - -=head1 SYNOPSIS - - #include - -=head2 EXAMPLE PROGRAM - - // a single header file is required - #include - - #include // for puts - - // every watcher type has its own typedef'd struct - // with the name ev_TYPE - ev_io stdin_watcher; - ev_timer timeout_watcher; - - // all watcher callbacks have a similar signature - // this callback is called when data is readable on stdin - static void - stdin_cb (EV_P_ ev_io *w, int revents) - { - puts ("stdin ready"); - // for one-shot events, one must manually stop the watcher - // with its corresponding stop function. - ev_io_stop (EV_A_ w); - - // this causes all nested ev_run's to stop iterating - ev_break (EV_A_ EVBREAK_ALL); - } - - // another callback, this time for a time-out - static void - timeout_cb (EV_P_ ev_timer *w, int revents) - { - puts ("timeout"); - // this causes the innermost ev_run to stop iterating - ev_break (EV_A_ EVBREAK_ONE); - } - - int - main (void) - { - // use the default event loop unless you have special needs - struct ev_loop *loop = EV_DEFAULT; - - // initialise an io watcher, then start it - // this one will watch for stdin to become readable - ev_io_init (&stdin_watcher, stdin_cb, /*STDIN_FILENO*/ 0, EV_READ); - ev_io_start (loop, &stdin_watcher); - - // initialise a timer watcher, then start it - // simple non-repeating 5.5 second timeout - ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.); - ev_timer_start (loop, &timeout_watcher); - - // now wait for events to arrive - ev_run (loop, 0); - - // break was called, so exit - return 0; - } - -=head1 ABOUT THIS DOCUMENT - -This document documents the libev software package. - -The newest version of this document is also available as an html-formatted -web page you might find easier to navigate when reading it for the first -time: L. - -While this document tries to be as complete as possible in documenting -libev, its usage and the rationale behind its design, it is not a tutorial -on event-based programming, nor will it introduce event-based programming -with libev. - -Familiarity with event based programming techniques in general is assumed -throughout this document. - -=head1 WHAT TO READ WHEN IN A HURRY - -This manual tries to be very detailed, but unfortunately, this also makes -it very long. If you just want to know the basics of libev, I suggest -reading L, then the L above and -look up the missing functions in L and the C and -C sections in L. - -=head1 ABOUT LIBEV - -Libev is an event loop: you register interest in certain events (such as a -file descriptor being readable or a timeout occurring), and it will manage -these event sources and provide your program with events. - -To do this, it must take more or less complete control over your process -(or thread) by executing the I handler, and will then -communicate events via a callback mechanism. - -You register interest in certain events by registering so-called I, which are relatively small C structures you initialise with the -details of the event, and then hand it over to libev by I the -watcher. - -=head2 FEATURES - -Libev supports C (files, many character devices...). - -Epoll is truly the train wreck analog among event poll mechanisms, -a frankenpoll, cobbled together in a hurry, no thought to design or -interaction with others. - -While stopping, setting and starting an I/O watcher in the same iteration -will result in some caching, there is still a system call per such -incident (because the same I could point to a different -I now), so its best to avoid that. Also, C'ed -file descriptors might not work very well if you register events for both -file descriptors. - -Best performance from this backend is achieved by not unregistering all -watchers for a file descriptor until it has been closed, if possible, -i.e. keep at least one watcher active per fd at all times. Stopping and -starting a watcher (without re-setting it) also usually doesn't cause -extra overhead. A fork can both result in spurious notifications as well -as in libev having to destroy and recreate the epoll object, which can -take considerable time and thus should be avoided. - -All this means that, in practice, C can be as fast or -faster than epoll for maybe up to a hundred file descriptors, depending on -the usage. So sad. - -While nominally embeddable in other event loops, this feature is broken in -all kernel versions tested so far. - -This backend maps C and C in the same way as -C. - -=item C (value 8, most BSD clones) - -Kqueue deserves special mention, as at the time of this writing, it -was broken on all BSDs except NetBSD (usually it doesn't work reliably -with anything but sockets and pipes, except on Darwin, where of course -it's completely useless). Unlike epoll, however, whose brokenness -is by design, these kqueue bugs can (and eventually will) be fixed -without API changes to existing programs. For this reason it's not being -"auto-detected" unless you explicitly specify it in the flags (i.e. using -C) or libev was compiled on a known-to-be-good (-enough) -system like NetBSD. - -You still can embed kqueue into a normal poll or select backend and use it -only for sockets (after having made sure that sockets work with kqueue on -the target platform). See C watchers for more info. - -It scales in the same way as the epoll backend, but the interface to the -kernel is more efficient (which says nothing about its actual speed, of -course). While stopping, setting and starting an I/O watcher does never -cause an extra system call as with C, it still adds up to -two event changes per incident. Support for C is very bad (but -sane, unlike epoll) and it drops fds silently in similarly hard-to-detect -cases - -This backend usually performs well under most conditions. - -While nominally embeddable in other event loops, this doesn't work -everywhere, so you might need to test for this. And since it is broken -almost everywhere, you should only use it when you have a lot of sockets -(for which it usually works), by embedding it into another event loop -(e.g. C or C (but C is of course -also broken on OS X)) and, did I mention it, using it only for sockets. - -This backend maps C into an C kevent with -C, and C into an C kevent with -C. - -=item C (value 16, Solaris 8) - -This is not implemented yet (and might never be, unless you send me an -implementation). According to reports, C only supports sockets -and is not embeddable, which would limit the usefulness of this backend -immensely. - -=item C (value 32, Solaris 10) - -This uses the Solaris 10 event port mechanism. As with everything on Solaris, -it's really slow, but it still scales very well (O(active_fds)). - -While this backend scales well, it requires one system call per active -file descriptor per loop iteration. For small and medium numbers of file -descriptors a "slow" C or C backend -might perform better. - -On the positive side, this backend actually performed fully to -specification in all tests and is fully embeddable, which is a rare feat -among the OS-specific backends (I vastly prefer correctness over speed -hacks). - -On the negative side, the interface is I - so bizarre that -even sun itself gets it wrong in their code examples: The event polling -function sometimes returning events to the caller even though an error -occurred, but with no indication whether it has done so or not (yes, it's -even documented that way) - deadly for edge-triggered interfaces where -you absolutely have to know whether an event occurred or not because you -have to re-arm the watcher. - -Fortunately libev seems to be able to work around these idiocies. - -This backend maps C and C in the same way as -C. - -=item C - -Try all backends (even potentially broken ones that wouldn't be tried -with C). Since this is a mask, you can do stuff such as -C. - -It is definitely not recommended to use this flag, use whatever -C returns, or simply do not specify a backend -at all. - -=item C - -Not a backend at all, but a mask to select all backend bits from a -C value, in case you want to mask out any backends from a flags -value (e.g. when modifying the C environment variable). - -=back - -If one or more of the backend flags are or'ed into the flags value, -then only these backends will be tried (in the reverse order as listed -here). If none are specified, all backends in C will be tried. - -Example: Try to create a event loop that uses epoll and nothing else. - - struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV); - if (!epoller) - fatal ("no epoll found here, maybe it hides under your chair"); - -Example: Use whatever libev has to offer, but make sure that kqueue is -used if available. - - struct ev_loop *loop = ev_loop_new (ev_recommended_backends () | EVBACKEND_KQUEUE); - -=item ev_loop_destroy (loop) - -Destroys an event loop object (frees all memory and kernel state -etc.). None of the active event watchers will be stopped in the normal -sense, so e.g. C might still return true. It is your -responsibility to either stop all watchers cleanly yourself I -calling this function, or cope with the fact afterwards (which is usually -the easiest thing, you can just ignore the watchers and/or C them -for example). - -Note that certain global state, such as signal state (and installed signal -handlers), will not be freed by this function, and related watchers (such -as signal and child watchers) would need to be stopped manually. - -This function is normally used on loop objects allocated by -C, but it can also be used on the default loop returned by -C, in which case it is not thread-safe. - -Note that it is not advisable to call this function on the default loop -except in the rare occasion where you really need to free its resources. -If you need dynamically allocated loops it is better to use C -and C. - -=item ev_loop_fork (loop) - -This function sets a flag that causes subsequent C iterations to -reinitialise the kernel state for backends that have one. Despite the -name, you can call it anytime, but it makes most sense after forking, in -the child process. You I call it (or use C) in the -child before resuming or calling C. - -Again, you I to call it on I loop that you want to re-use after -a fork, I. This is -because some kernel interfaces *cough* I *cough* do funny things -during fork. - -On the other hand, you only need to call this function in the child -process if and only if you want to use the event loop in the child. If -you just fork+exec or create a new loop in the child, you don't have to -call it at all (in fact, C is so badly broken that it makes a -difference, but libev will usually detect this case on its own and do a -costly reset of the backend). - -The function itself is quite fast and it's usually not a problem to call -it just in case after a fork. - -Example: Automate calling C on the default loop when -using pthreads. - - static void - post_fork_child (void) - { - ev_loop_fork (EV_DEFAULT); - } - - ... - pthread_atfork (0, 0, post_fork_child); - -=item int ev_is_default_loop (loop) - -Returns true when the given loop is, in fact, the default loop, and false -otherwise. - -=item unsigned int ev_iteration (loop) - -Returns the current iteration count for the event loop, which is identical -to the number of times libev did poll for new events. It starts at C<0> -and happily wraps around with enough iterations. - -This value can sometimes be useful as a generation counter of sorts (it -"ticks" the number of loop iterations), as it roughly corresponds with -C and C calls - and is incremented between the -prepare and check phases. - -=item unsigned int ev_depth (loop) - -Returns the number of times C was entered minus the number of -times C was exited normally, in other words, the recursion depth. - -Outside C, this number is zero. In a callback, this number is -C<1>, unless C was invoked recursively (or from another thread), -in which case it is higher. - -Leaving C abnormally (setjmp/longjmp, cancelling the thread, -throwing an exception etc.), doesn't count as "exit" - consider this -as a hint to avoid such ungentleman-like behaviour unless it's really -convenient, in which case it is fully supported. - -=item unsigned int ev_backend (loop) - -Returns one of the C flags indicating the event backend in -use. - -=item ev_tstamp ev_now (loop) - -Returns the current "event loop time", which is the time the event loop -received events and started processing them. This timestamp does not -change as long as callbacks are being processed, and this is also the base -time used for relative timers. You can treat it as the timestamp of the -event occurring (or more correctly, libev finding out about it). - -=item ev_now_update (loop) - -Establishes the current time by querying the kernel, updating the time -returned by C in the progress. This is a costly operation and -is usually done automatically within C. - -This function is rarely useful, but when some event callback runs for a -very long time without entering the event loop, updating libev's idea of -the current time is a good idea. - -See also L in the C section. - -=item ev_suspend (loop) - -=item ev_resume (loop) - -These two functions suspend and resume an event loop, for use when the -loop is not used for a while and timeouts should not be processed. - -A typical use case would be an interactive program such as a game: When -the user presses C<^Z> to suspend the game and resumes it an hour later it -would be best to handle timeouts as if no time had actually passed while -the program was suspended. This can be achieved by calling C -in your C handler, sending yourself a C and calling -C directly afterwards to resume timer processing. - -Effectively, all C watchers will be delayed by the time spend -between C and C, and all C watchers -will be rescheduled (that is, they will lose any events that would have -occurred while suspended). - -After calling C you B call I function on the -given loop other than C, and you B call C -without a previous call to C. - -Calling C/C has the side effect of updating the -event loop time (see C). - -=item ev_run (loop, int flags) - -Finally, this is it, the event handler. This function usually is called -after you have initialised all your watchers and you want to start -handling events. It will ask the operating system for any new events, call -the watcher callbacks, an then repeat the whole process indefinitely: This -is why event loops are called I. - -If the flags argument is specified as C<0>, it will keep handling events -until either no event watchers are active anymore or C was -called. - -Please note that an explicit C is usually better than -relying on all watchers to be stopped when deciding when a program has -finished (especially in interactive programs), but having a program -that automatically loops as long as it has to and no longer by virtue -of relying on its watchers stopping correctly, that is truly a thing of -beauty. - -This function is also I exception-safe - you can break out of -a C call by calling C in a callback, throwing a C++ -exception and so on. This does not decrement the C value, nor -will it clear any outstanding C breaks. - -A flags value of C will look for new events, will handle -those events and any already outstanding ones, but will not wait and -block your process in case there are no events and will return after one -iteration of the loop. This is sometimes useful to poll and handle new -events while doing lengthy calculations, to keep the program responsive. - -A flags value of C will look for new events (waiting if -necessary) and will handle those and any already outstanding ones. It -will block your process until at least one new event arrives (which could -be an event internal to libev itself, so there is no guarantee that a -user-registered callback will be called), and will return after one -iteration of the loop. - -This is useful if you are waiting for some external event in conjunction -with something not expressible using other libev watchers (i.e. "roll your -own C"). However, a pair of C/C watchers is -usually a better approach for this kind of thing. - -Here are the gory details of what C does: - - - Increment loop depth. - - Reset the ev_break status. - - Before the first iteration, call any pending watchers. - LOOP: - - If EVFLAG_FORKCHECK was used, check for a fork. - - If a fork was detected (by any means), queue and call all fork watchers. - - Queue and call all prepare watchers. - - If ev_break was called, goto FINISH. - - If we have been forked, detach and recreate the kernel state - as to not disturb the other process. - - Update the kernel state with all outstanding changes. - - Update the "event loop time" (ev_now ()). - - Calculate for how long to sleep or block, if at all - (active idle watchers, EVRUN_NOWAIT or not having - any active watchers at all will result in not sleeping). - - Sleep if the I/O and timer collect interval say so. - - Increment loop iteration counter. - - Block the process, waiting for any events. - - Queue all outstanding I/O (fd) events. - - Update the "event loop time" (ev_now ()), and do time jump adjustments. - - Queue all expired timers. - - Queue all expired periodics. - - Queue all idle watchers with priority higher than that of pending events. - - Queue all check watchers. - - Call all queued watchers in reverse order (i.e. check watchers first). - Signals and child watchers are implemented as I/O watchers, and will - be handled here by queueing them when their watcher gets executed. - - If ev_break has been called, or EVRUN_ONCE or EVRUN_NOWAIT - were used, or there are no active watchers, goto FINISH, otherwise - continue with step LOOP. - FINISH: - - Reset the ev_break status iff it was EVBREAK_ONE. - - Decrement the loop depth. - - Return. - -Example: Queue some jobs and then loop until no events are outstanding -anymore. - - ... queue jobs here, make sure they register event watchers as long - ... as they still have work to do (even an idle watcher will do..) - ev_run (my_loop, 0); - ... jobs done or somebody called break. yeah! - -=item ev_break (loop, how) - -Can be used to make a call to C return early (but only after it -has processed all outstanding events). The C argument must be either -C, which will make the innermost C call return, or -C, which will make all nested C calls return. - -This "break state" will be cleared on the next call to C. - -It is safe to call C from outside any C calls, too, in -which case it will have no effect. - -=item ev_ref (loop) - -=item ev_unref (loop) - -Ref/unref can be used to add or remove a reference count on the event -loop: Every watcher keeps one reference, and as long as the reference -count is nonzero, C will not return on its own. - -This is useful when you have a watcher that you never intend to -unregister, but that nevertheless should not keep C from -returning. In such a case, call C after starting, and C -before stopping it. - -As an example, libev itself uses this for its internal signal pipe: It -is not visible to the libev user and should not keep C from -exiting if no event watchers registered by it are active. It is also an -excellent way to do this for generic recurring timers or from within -third-party libraries. Just remember to I and I (but only if the watcher wasn't active before, or was active -before, respectively. Note also that libev might stop watchers itself -(e.g. non-repeating timers) in which case you have to C -in the callback). - -Example: Create a signal watcher, but keep it from keeping C -running when nothing else is active. - - ev_signal exitsig; - ev_signal_init (&exitsig, sig_cb, SIGINT); - ev_signal_start (loop, &exitsig); - ev_unref (loop); - -Example: For some weird reason, unregister the above signal handler again. - - ev_ref (loop); - ev_signal_stop (loop, &exitsig); - -=item ev_set_io_collect_interval (loop, ev_tstamp interval) - -=item ev_set_timeout_collect_interval (loop, ev_tstamp interval) - -These advanced functions influence the time that libev will spend waiting -for events. Both time intervals are by default C<0>, meaning that libev -will try to invoke timer/periodic callbacks and I/O callbacks with minimum -latency. - -Setting these to a higher value (the C I be >= C<0>) -allows libev to delay invocation of I/O and timer/periodic callbacks -to increase efficiency of loop iterations (or to increase power-saving -opportunities). - -The idea is that sometimes your program runs just fast enough to handle -one (or very few) event(s) per loop iteration. While this makes the -program responsive, it also wastes a lot of CPU time to poll for new -events, especially with backends like C (or libev) on file descriptors -representing files, and expect it to become ready when their program -doesn't block on disk accesses (which can take a long time on their own). - -However, this cannot ever work in the "expected" way - you get a readiness -notification as soon as the kernel knows whether and how much data is -there, and in the case of open files, that's always the case, so you -always get a readiness notification instantly, and your read (or possibly -write) will still block on the disk I/O. - -Another way to view it is that in the case of sockets, pipes, character -devices and so on, there is another party (the sender) that delivers data -on its own, but in the case of files, there is no such thing: the disk -will not send data on its own, simply because it doesn't know what you -wish to read - you would first have to request some data. - -Since files are typically not-so-well supported by advanced notification -mechanism, libev tries hard to emulate POSIX behaviour with respect -to files, even though you should not use it. The reason for this is -convenience: sometimes you want to watch STDIN or STDOUT, which is -usually a tty, often a pipe, but also sometimes files or special devices -(for example, C on Linux works with F but not with -F), and even though the file might better be served with -asynchronous I/O instead of with non-blocking I/O, it is still useful when -it "just works" instead of freezing. - -So avoid file descriptors pointing to files when you know it (e.g. use -libeio), but use them when it is convenient, e.g. for STDIN/STDOUT, or -when you rarely read from a file instead of from a socket, and want to -reuse the same code path. - -=head3 The special problem of fork - -Some backends (epoll, kqueue) do not support C at all or exhibit -useless behaviour. Libev fully supports fork, but needs to be told about -it in the child if you want to continue to use it in the child. - -To support fork in your child processes, you have to call C after a fork in the child, enable C, or resort to -C or C. - -=head3 The special problem of SIGPIPE - -While not really specific to libev, it is easy to forget about C: -when writing to a pipe whose other end has been closed, your program gets -sent a SIGPIPE, which, by default, aborts your program. For most programs -this is sensible behaviour, for daemons, this is usually undesirable. - -So when you encounter spurious, unexplained daemon exits, make sure you -ignore SIGPIPE (and maybe make sure you log the exit status of your daemon -somewhere, as that would have given you a big clue). - -=head3 The special problem of accept()ing when you can't - -Many implementations of the POSIX C function (for example, -found in post-2004 Linux) have the peculiar behaviour of not removing a -connection from the pending queue in all error cases. - -For example, larger servers often run out of file descriptors (because -of resource limits), causing C to fail with C but not -rejecting the connection, leading to libev signalling readiness on -the next iteration again (the connection still exists after all), and -typically causing the program to loop at 100% CPU usage. - -Unfortunately, the set of errors that cause this issue differs between -operating systems, there is usually little the app can do to remedy the -situation, and no known thread-safe method of removing the connection to -cope with overload is known (to me). - -One of the easiest ways to handle this situation is to just ignore it -- when the program encounters an overload, it will just loop until the -situation is over. While this is a form of busy waiting, no OS offers an -event-based way to handle this situation, so it's the best one can do. - -A better way to handle the situation is to log any errors other than -C and C, making sure not to flood the log with such -messages, and continue as usual, which at least gives the user an idea of -what could be wrong ("raise the ulimit!"). For extra points one could stop -the C watcher on the listening fd "for a while", which reduces CPU -usage. - -If your program is single-threaded, then you could also keep a dummy file -descriptor for overload situations (e.g. by opening F), and -when you run into C or C, close it, run C, -close that fd, and create a new dummy fd. This will gracefully refuse -clients under typical overload conditions. - -The last way to handle it is to simply log the error and C, as -is often done with C failures, but this results in an easy -opportunity for a DoS attack. - -=head3 Watcher-Specific Functions - -=over 4 - -=item ev_io_init (ev_io *, callback, int fd, int events) - -=item ev_io_set (ev_io *, int fd, int events) - -Configures an C watcher. The C is the file descriptor to -receive events for and C is either C, C or -C, to express the desire to receive the given events. - -=item int fd [read-only] - -The file descriptor being watched. - -=item int events [read-only] - -The events being watched. - -=back - -=head3 Examples - -Example: Call C when STDIN_FILENO has become, well -readable, but only once. Since it is likely line-buffered, you could -attempt to read a whole line in the callback. - - static void - stdin_readable_cb (struct ev_loop *loop, ev_io *w, int revents) - { - ev_io_stop (loop, w); - .. read from stdin here (or from w->fd) and handle any I/O errors - } - - ... - struct ev_loop *loop = ev_default_init (0); - ev_io stdin_readable; - ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ); - ev_io_start (loop, &stdin_readable); - ev_run (loop, 0); - - -=head2 C - relative and optionally repeating timeouts - -Timer watchers are simple relative timers that generate an event after a -given time, and optionally repeating in regular intervals after that. - -The timers are based on real time, that is, if you register an event that -times out after an hour and you reset your system clock to January last -year, it will still time out after (roughly) one hour. "Roughly" because -detecting time jumps is hard, and some inaccuracies are unavoidable (the -monotonic clock option helps a lot here). - -The callback is guaranteed to be invoked only I its timeout has -passed (not I, so on systems with very low-resolution clocks this -might introduce a small delay). If multiple timers become ready during the -same loop iteration then the ones with earlier time-out values are invoked -before ones of the same priority with later time-out values (but this is -no longer true when a callback calls C recursively). - -=head3 Be smart about timeouts - -Many real-world problems involve some kind of timeout, usually for error -recovery. A typical example is an HTTP request - if the other side hangs, -you want to raise some error after a while. - -What follows are some ways to handle this problem, from obvious and -inefficient to smart and efficient. - -In the following, a 60 second activity timeout is assumed - a timeout that -gets reset to 60 seconds each time there is activity (e.g. each time some -data or other life sign was received). - -=over 4 - -=item 1. Use a timer and stop, reinitialise and start it on activity. - -This is the most obvious, but not the most simple way: In the beginning, -start the watcher: - - ev_timer_init (timer, callback, 60., 0.); - ev_timer_start (loop, timer); - -Then, each time there is some activity, C it, initialise it -and start it again: - - ev_timer_stop (loop, timer); - ev_timer_set (timer, 60., 0.); - ev_timer_start (loop, timer); - -This is relatively simple to implement, but means that each time there is -some activity, libev will first have to remove the timer from its internal -data structure and then add it again. Libev tries to be fast, but it's -still not a constant-time operation. - -=item 2. Use a timer and re-start it with C inactivity. - -This is the easiest way, and involves using C instead of -C. - -To implement this, configure an C with a C value -of C<60> and then call C at start and each time you -successfully read or write some data. If you go into an idle state where -you do not expect data to travel on the socket, you can C -the timer, and C will automatically restart it if need be. - -That means you can ignore both the C function and the -C argument to C, and only ever use the C -member and C. - -At start: - - ev_init (timer, callback); - timer->repeat = 60.; - ev_timer_again (loop, timer); - -Each time there is some activity: - - ev_timer_again (loop, timer); - -It is even possible to change the time-out on the fly, regardless of -whether the watcher is active or not: - - timer->repeat = 30.; - ev_timer_again (loop, timer); - -This is slightly more efficient then stopping/starting the timer each time -you want to modify its timeout value, as libev does not have to completely -remove and re-insert the timer from/into its internal data structure. - -It is, however, even simpler than the "obvious" way to do it. - -=item 3. Let the timer time out, but then re-arm it as required. - -This method is more tricky, but usually most efficient: Most timeouts are -relatively long compared to the intervals between other activity - in -our example, within 60 seconds, there are usually many I/O events with -associated activity resets. - -In this case, it would be more efficient to leave the C alone, -but remember the time of last activity, and check for a real timeout only -within the callback: - - ev_tstamp last_activity; // time of last activity - - static void - callback (EV_P_ ev_timer *w, int revents) - { - ev_tstamp now = ev_now (EV_A); - ev_tstamp timeout = last_activity + 60.; - - // if last_activity + 60. is older than now, we did time out - if (timeout < now) - { - // timeout occurred, take action - } - else - { - // callback was invoked, but there was some activity, re-arm - // the watcher to fire in last_activity + 60, which is - // guaranteed to be in the future, so "again" is positive: - w->repeat = timeout - now; - ev_timer_again (EV_A_ w); - } - } - -To summarise the callback: first calculate the real timeout (defined -as "60 seconds after the last activity"), then check if that time has -been reached, which means something I, in fact, time out. Otherwise -the callback was invoked too early (C is in the future), so -re-schedule the timer to fire at that future time, to see if maybe we have -a timeout then. - -Note how C is used, taking advantage of the -C optimisation when the timer is already running. - -This scheme causes more callback invocations (about one every 60 seconds -minus half the average time between activity), but virtually no calls to -libev to change the timeout. - -To start the timer, simply initialise the watcher and set C -to the current time (meaning we just have some activity :), then call the -callback, which will "do the right thing" and start the timer: - - ev_init (timer, callback); - last_activity = ev_now (loop); - callback (loop, timer, EV_TIMER); - -And when there is some activity, simply store the current time in -C, no libev calls at all: - - last_activity = ev_now (loop); - -This technique is slightly more complex, but in most cases where the -time-out is unlikely to be triggered, much more efficient. - -Changing the timeout is trivial as well (if it isn't hard-coded in the -callback :) - just change the timeout and invoke the callback, which will -fix things for you. - -=item 4. Wee, just use a double-linked list for your timeouts. - -If there is not one request, but many thousands (millions...), all -employing some kind of timeout with the same timeout value, then one can -do even better: - -When starting the timeout, calculate the timeout value and put the timeout -at the I of the list. - -Then use an C to fire when the timeout at the I of -the list is expected to fire (for example, using the technique #3). - -When there is some activity, remove the timer from the list, recalculate -the timeout, append it to the end of the list again, and make sure to -update the C if it was taken from the beginning of the list. - -This way, one can manage an unlimited number of timeouts in O(1) time for -starting, stopping and updating the timers, at the expense of a major -complication, and having to use a constant timeout. The constant timeout -ensures that the list stays sorted. - -=back - -So which method the best? - -Method #2 is a simple no-brain-required solution that is adequate in most -situations. Method #3 requires a bit more thinking, but handles many cases -better, and isn't very complicated either. In most case, choosing either -one is fine, with #3 being better in typical situations. - -Method #1 is almost always a bad idea, and buys you nothing. Method #4 is -rather complicated, but extremely efficient, something that really pays -off after the first million or so of active timers, i.e. it's usually -overkill :) - -=head3 The special problem of time updates - -Establishing the current time is a costly operation (it usually takes at -least two system calls): EV therefore updates its idea of the current -time only before and after C collects new events, which causes a -growing difference between C and C when handling -lots of events in one iteration. - -The relative timeouts are calculated relative to the C -time. This is usually the right thing as this timestamp refers to the time -of the event triggering whatever timeout you are modifying/starting. If -you suspect event processing to be delayed and you I to base the -timeout on the current time, use something like this to adjust for this: - - ev_timer_set (&timer, after + ev_now () - ev_time (), 0.); - -If the event loop is suspended for a long time, you can also force an -update of the time returned by C by calling C. - -=head3 The special problems of suspended animation - -When you leave the server world it is quite customary to hit machines that -can suspend/hibernate - what happens to the clocks during such a suspend? - -Some quick tests made with a Linux 2.6.28 indicate that a suspend freezes -all processes, while the clocks (C, C) continue -to run until the system is suspended, but they will not advance while the -system is suspended. That means, on resume, it will be as if the program -was frozen for a few seconds, but the suspend time will not be counted -towards C when a monotonic clock source is used. The real time -clock advanced as expected, but if it is used as sole clocksource, then a -long suspend would be detected as a time jump by libev, and timers would -be adjusted accordingly. - -I would not be surprised to see different behaviour in different between -operating systems, OS versions or even different hardware. - -The other form of suspend (job control, or sending a SIGSTOP) will see a -time jump in the monotonic clocks and the realtime clock. If the program -is suspended for a very long time, and monotonic clock sources are in use, -then you can expect Cs to expire as the full suspension time -will be counted towards the timers. When no monotonic clock source is in -use, then libev will again assume a timejump and adjust accordingly. - -It might be beneficial for this latter case to call C -and C in code that handles C, to at least get -deterministic behaviour in this case (you can do nothing against -C). - -=head3 Watcher-Specific Functions and Data Members - -=over 4 - -=item ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat) - -=item ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat) - -Configure the timer to trigger after C seconds. If C -is C<0.>, then it will automatically be stopped once the timeout is -reached. If it is positive, then the timer will automatically be -configured to trigger again C seconds later, again, and again, -until stopped manually. - -The timer itself will do a best-effort at avoiding drift, that is, if -you configure a timer to trigger every 10 seconds, then it will normally -trigger at exactly 10 second intervals. If, however, your program cannot -keep up with the timer (because it takes longer than those 10 seconds to -do stuff) the timer will not fire more than once per event loop iteration. - -=item ev_timer_again (loop, ev_timer *) - -This will act as if the timer timed out and restart it again if it is -repeating. The exact semantics are: - -If the timer is pending, its pending status is cleared. - -If the timer is started but non-repeating, stop it (as if it timed out). - -If the timer is repeating, either start it if necessary (with the -C value), or reset the running timer to the C value. - -This sounds a bit complicated, see L, above, for a -usage example. - -=item ev_tstamp ev_timer_remaining (loop, ev_timer *) - -Returns the remaining time until a timer fires. If the timer is active, -then this time is relative to the current event loop time, otherwise it's -the timeout value currently configured. - -That is, after an C, C returns -C<5>. When the timer is started and one second passes, C -will return C<4>. When the timer expires and is restarted, it will return -roughly C<7> (likely slightly less as callback invocation takes some time, -too), and so on. - -=item ev_tstamp repeat [read-write] - -The current C value. Will be used each time the watcher times out -or C is called, and determines the next timeout (if any), -which is also when any modifications are taken into account. - -=back - -=head3 Examples - -Example: Create a timer that fires after 60 seconds. - - static void - one_minute_cb (struct ev_loop *loop, ev_timer *w, int revents) - { - .. one minute over, w is actually stopped right here - } - - ev_timer mytimer; - ev_timer_init (&mytimer, one_minute_cb, 60., 0.); - ev_timer_start (loop, &mytimer); - -Example: Create a timeout timer that times out after 10 seconds of -inactivity. - - static void - timeout_cb (struct ev_loop *loop, ev_timer *w, int revents) - { - .. ten seconds without any activity - } - - ev_timer mytimer; - ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */ - ev_timer_again (&mytimer); /* start timer */ - ev_run (loop, 0); - - // and in some piece of code that gets executed on any "activity": - // reset the timeout to start ticking again at 10 seconds - ev_timer_again (&mytimer); - - -=head2 C - to cron or not to cron? - -Periodic watchers are also timers of a kind, but they are very versatile -(and unfortunately a bit complex). - -Unlike C, periodic watchers are not based on real time (or -relative time, the physical time that passes) but on wall clock time -(absolute time, the thing you can read on your calender or clock). The -difference is that wall clock time can run faster or slower than real -time, and time jumps are not uncommon (e.g. when you adjust your -wrist-watch). - -You can tell a periodic watcher to trigger after some specific point -in time: for example, if you tell a periodic watcher to trigger "in 10 -seconds" (by specifying e.g. C, that is, an absolute time -not a delay) and then reset your system clock to January of the previous -year, then it will take a year or more to trigger the event (unlike an -C, which would still trigger roughly 10 seconds after starting -it, as it uses a relative timeout). - -C watchers can also be used to implement vastly more complex -timers, such as triggering an event on each "midnight, local time", or -other complicated rules. This cannot be done with C watchers, as -those cannot react to time jumps. - -As with timers, the callback is guaranteed to be invoked only when the -point in time where it is supposed to trigger has passed. If multiple -timers become ready during the same loop iteration then the ones with -earlier time-out values are invoked before ones with later time-out values -(but this is no longer true when a callback calls C recursively). - -=head3 Watcher-Specific Functions and Data Members - -=over 4 - -=item ev_periodic_init (ev_periodic *, callback, ev_tstamp offset, ev_tstamp interval, reschedule_cb) - -=item ev_periodic_set (ev_periodic *, ev_tstamp offset, ev_tstamp interval, reschedule_cb) - -Lots of arguments, let's sort it out... There are basically three modes of -operation, and we will explain them from simplest to most complex: - -=over 4 - -=item * absolute timer (offset = absolute time, interval = 0, reschedule_cb = 0) - -In this configuration the watcher triggers an event after the wall clock -time C has passed. It will not repeat and will not adjust when a -time jump occurs, that is, if it is to be run at January 1st 2011 then it -will be stopped and invoked when the system clock reaches or surpasses -this point in time. - -=item * repeating interval timer (offset = offset within interval, interval > 0, reschedule_cb = 0) - -In this mode the watcher will always be scheduled to time out at the next -C time (for some integer N, which can also be -negative) and then repeat, regardless of any time jumps. The C -argument is merely an offset into the C periods. - -This can be used to create timers that do not drift with respect to the -system clock, for example, here is an C that triggers each -hour, on the hour (with respect to UTC): - - ev_periodic_set (&periodic, 0., 3600., 0); - -This doesn't mean there will always be 3600 seconds in between triggers, -but only that the callback will be called when the system time shows a -full hour (UTC), or more correctly, when the system time is evenly divisible -by 3600. - -Another way to think about it (for the mathematically inclined) is that -C will try to run the callback in this mode at the next possible -time where C