From 412e413edc3864cf2d6da30b88248c0cbbe4e941 Mon Sep 17 00:00:00 2001 From: Ryan Dahl Date: Fri, 1 Jul 2011 09:30:44 -0700 Subject: [PATCH] Upgrade libuv --- deps/libeio/CMakeLists.txt | 26 - deps/libeio/Changes | 35 - deps/libeio/LICENSE | 36 - deps/libeio/Makefile.am | 15 - deps/libeio/aclocal.m4 | 8957 ------------------- deps/libeio/autogen.sh | 5 - deps/libeio/config.h.cmake | 17 - deps/libeio/config.h.in | 86 - deps/libeio/configure.ac | 22 - deps/libeio/demo.c | 194 - deps/libeio/eio.3 | 3428 ------- deps/libeio/eio.c | 2128 ----- deps/libeio/eio.h | 356 - deps/libeio/eio.pod | 303 - deps/libeio/libeio.m4 | 156 - deps/libeio/wscript | 131 - deps/libeio/xthread.h | 159 - deps/uv/LICENSE | 3 + deps/uv/c-ares/ares.h | 3 - deps/uv/c-ares/ares_setup.h | 3 - deps/uv/c-ares/config_cygwin/ares_config.h | 3 - deps/uv/c-ares/config_darwin/ares_config.h | 3 - deps/uv/c-ares/config_freebsd/ares_config.h | 3 - deps/uv/c-ares/config_linux/ares_config.h | 3 - deps/uv/c-ares/config_openbsd/ares_config.h | 3 - deps/uv/c-ares/config_sunos/ares_config.h | 3 - deps/uv/c-ares/config_win32/ares_config.h | 3 - deps/uv/config-unix.mk | 29 +- deps/uv/test/benchmark-ping-pongs.c | 10 +- deps/uv/test/benchmark-pump.c | 28 +- deps/uv/test/dns-server.c | 20 +- deps/uv/test/echo-server.c | 18 +- deps/uv/test/test-bind-error.c | 20 +- deps/uv/test/test-bind6-error.c | 18 +- deps/uv/test/test-callback-stack.c | 10 +- deps/uv/test/test-connection-fail.c | 4 +- deps/uv/test/test-delayed-accept.c | 16 +- deps/uv/test/test-ping-pong.c | 8 +- deps/uv/test/test-shutdown-eof.c | 10 +- deps/uv/test/test-tcp-writealot.c | 8 +- deps/uv/uv-linux.c | 3 + deps/uv/uv-unix.c | 124 +- deps/uv/uv-unix.h | 18 +- deps/uv/uv-win.c | 100 +- deps/uv/uv-win.h | 5 +- deps/uv/uv.h | 68 +- src/tcp_wrap.cc | 28 +- wscript | 10 +- 48 files changed, 352 insertions(+), 16287 deletions(-) delete mode 100644 deps/libeio/CMakeLists.txt delete mode 100644 deps/libeio/Changes delete mode 100644 deps/libeio/LICENSE delete mode 100644 deps/libeio/Makefile.am delete mode 100644 deps/libeio/aclocal.m4 delete mode 100755 deps/libeio/autogen.sh delete mode 100644 deps/libeio/config.h.cmake delete mode 100644 deps/libeio/config.h.in delete mode 100644 deps/libeio/configure.ac delete mode 100644 deps/libeio/demo.c delete mode 100644 deps/libeio/eio.3 delete mode 100644 deps/libeio/eio.c delete mode 100644 deps/libeio/eio.h delete mode 100644 deps/libeio/eio.pod delete mode 100644 deps/libeio/libeio.m4 delete mode 100644 deps/libeio/wscript delete mode 100644 deps/libeio/xthread.h diff --git a/deps/libeio/CMakeLists.txt b/deps/libeio/CMakeLists.txt deleted file mode 100644 index 2d0a26df94..0000000000 --- a/deps/libeio/CMakeLists.txt +++ /dev/null @@ -1,26 +0,0 @@ -include(CheckFunctionExists) -include(FindThreads) - -if(!${CMAKE_USE_PTHREADS_INIT}) - message(FATAL_ERROR "Unable to find pthreads") -endif() - -add_definitions(-DHAVE_CONFIG_H=1 -D_GNU_SOURCE) - -check_function_exists(futimes HAVE_FUTIMES) -check_function_exists(readahead HAVE_READAHEAD) -check_function_exists(fdatasync HAVE_FDATASYNC) -check_function_exists(pread HAVE_PREAD) -check_function_exists(pwrite HAVE_PWRITE) -check_function_exists(sendfile HAVE_SENDFILE) -check_function_exists(sync_file_range HAVE_SYNC_FILE_RANGE) - -if(${HAVE_PREAD} AND ${HAVE_PWRITE}) - set(HAVE_PREADWRITE 1) -endif() - -configure_file(config.h.cmake ${PROJECT_BINARY_DIR}/deps/libeio/config.h) -include_directories(${PROJECT_BINARY_DIR}/deps/libeio) - -add_library(eio eio.c) -target_link_libraries(eio ${CMAKE_THREAD_LIBS_INIT}) diff --git a/deps/libeio/Changes b/deps/libeio/Changes deleted file mode 100644 index baa94eca9c..0000000000 --- a/deps/libeio/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/libeio/LICENSE b/deps/libeio/LICENSE deleted file mode 100644 index 1ed1324d30..0000000000 --- a/deps/libeio/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/libeio/Makefile.am b/deps/libeio/Makefile.am deleted file mode 100644 index 857d26b619..0000000000 --- a/deps/libeio/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/libeio/aclocal.m4 b/deps/libeio/aclocal.m4 deleted file mode 100644 index 18abb73686..0000000000 --- a/deps/libeio/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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-esac - -# Try without a prefix underscore, then with it. -for ac_symprfx in "" "_"; do - - # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol. - symxfrm="\\1 $ac_symprfx\\2 \\2" - - # Write the raw and C identifiers. - if test "$lt_cv_nm_interface" = "MS dumpbin"; then - # Fake it for dumpbin and say T for any non-static function - # and D for any global variable. - # Also find C++ and __fastcall symbols from MSVC++, - # which start with @ or ?. - lt_cv_sys_global_symbol_pipe="$AWK ['"\ -" {last_section=section; section=\$ 3};"\ -" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\ -" \$ 0!~/External *\|/{next};"\ -" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\ -" {if(hide[section]) next};"\ -" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\ -" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\ -" s[1]~/^[@?]/{print s[1], s[1]; next};"\ -" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\ -" ' prfx=^$ac_symprfx]" - else - lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'" - fi - - # Check to see that the pipe works correctly. - pipe_works=no - - rm -f conftest* - cat > conftest.$ac_ext <<_LT_EOF -#ifdef __cplusplus -extern "C" { -#endif -char nm_test_var; -void nm_test_func(void); -void nm_test_func(void){} -#ifdef __cplusplus -} -#endif -int main(){nm_test_var='a';nm_test_func();return(0);} -_LT_EOF - - if AC_TRY_EVAL(ac_compile); then - # Now try to grab the symbols. - nlist=conftest.nm - if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist) && test -s "$nlist"; then - # Try sorting and uniquifying the output. - if sort "$nlist" | uniq > "$nlist"T; then - mv -f "$nlist"T "$nlist" - else - rm -f "$nlist"T - fi - - # Make sure that we snagged all the symbols we need. - if $GREP ' nm_test_var$' "$nlist" >/dev/null; then - if $GREP ' nm_test_func$' "$nlist" >/dev/null; then - cat <<_LT_EOF > conftest.$ac_ext -#ifdef __cplusplus -extern "C" { -#endif - -_LT_EOF - # Now generate the symbol file. - eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext' - - cat <<_LT_EOF >> conftest.$ac_ext - -/* The mapping between symbol names and symbols. */ -const struct { - const char *name; - void *address; -} -lt__PROGRAM__LTX_preloaded_symbols[[]] = -{ - { "@PROGRAM@", (void *) 0 }, -_LT_EOF - $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext - cat <<\_LT_EOF >> conftest.$ac_ext - {0, (void *) 0} -}; - -/* This works around a problem in FreeBSD linker */ -#ifdef FREEBSD_WORKAROUND -static const void *lt_preloaded_setup() { - return lt__PROGRAM__LTX_preloaded_symbols; -} -#endif - -#ifdef __cplusplus -} -#endif -_LT_EOF - # Now try linking the two files. - mv conftest.$ac_objext conftstm.$ac_objext - lt_save_LIBS="$LIBS" - lt_save_CFLAGS="$CFLAGS" - LIBS="conftstm.$ac_objext" - CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)" - if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then - pipe_works=yes - fi - LIBS="$lt_save_LIBS" - CFLAGS="$lt_save_CFLAGS" - else - echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD - fi - else - echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD - fi - else - echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD - fi - else - echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD - cat conftest.$ac_ext >&5 - fi - rm -rf conftest* conftst* - - # Do not use the global_symbol_pipe unless it works. - if test "$pipe_works" = yes; then - break - else - lt_cv_sys_global_symbol_pipe= - fi -done -]) -if test -z "$lt_cv_sys_global_symbol_pipe"; then - lt_cv_sys_global_symbol_to_cdecl= -fi -if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then - AC_MSG_RESULT(failed) -else - AC_MSG_RESULT(ok) -fi - -_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1], - [Take the output of nm and produce a listing of raw symbols and C names]) -_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1], - [Transform the output of nm in a proper C declaration]) -_LT_DECL([global_symbol_to_c_name_address], - [lt_cv_sys_global_symbol_to_c_name_address], [1], - [Transform the output of nm in a C name address pair]) -_LT_DECL([global_symbol_to_c_name_address_lib_prefix], - [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1], - [Transform the output of nm in a C name address pair when lib prefix is needed]) -]) # _LT_CMD_GLOBAL_SYMBOLS - - -# _LT_COMPILER_PIC([TAGNAME]) -# --------------------------- -m4_defun([_LT_COMPILER_PIC], -[m4_require([_LT_TAG_COMPILER])dnl -_LT_TAGVAR(lt_prog_compiler_wl, $1)= -_LT_TAGVAR(lt_prog_compiler_pic, $1)= -_LT_TAGVAR(lt_prog_compiler_static, $1)= - -AC_MSG_CHECKING([for $compiler option to produce PIC]) -m4_if([$1], [CXX], [ - # C++ specific cases for pic, static, wl, etc. - if test "$GXX" = yes; then - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' - - case $host_os in - aix*) - # All AIX code is PIC. - if test "$host_cpu" = ia64; then - # AIX 5 now supports IA64 processor - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - fi - ;; - - amigaos*) - case $host_cpu in - powerpc) - # see comment about AmigaOS4 .so support - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - ;; - m68k) - # FIXME: we need at least 68020 code to build shared libraries, but - # adding the `-m68020' flag to GCC prevents building anything better, - # like `-m68040'. - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4' - ;; - esac - ;; - - beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) - # PIC is the default for these OSes. - ;; - mingw* | cygwin* | os2* | pw32* | cegcc*) - # This hack is so that the source file can tell whether it is being - # built for inclusion in a dll (and should export symbols for example). - # Although the cygwin gcc ignores -fPIC, still need this for old-style - # (--disable-auto-import) libraries - m4_if([$1], [GCJ], [], - [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) - ;; - darwin* | rhapsody*) - # PIC is the default on this platform - # Common symbols not allowed in MH_DYLIB files - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' - ;; - *djgpp*) - # DJGPP does not support shared libraries at all - _LT_TAGVAR(lt_prog_compiler_pic, $1)= - ;; - interix[[3-9]]*) - # Interix 3.x gcc -fpic/-fPIC options generate broken code. - # Instead, we relocate shared libraries at runtime. - ;; - sysv4*MP*) - if test -d /usr/nec; then - _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic - fi - ;; - hpux*) - # PIC is the default for 64-bit PA HP-UX, but not for 32-bit - # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag - # sets the default TLS model and affects inlining. - case $host_cpu in - hppa*64*) - ;; - *) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - ;; - esac - ;; - *qnx* | *nto*) - # QNX uses GNU C++, but need to define -shared option too, otherwise - # it will coredump. - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' - ;; - *) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - ;; - esac - else - case $host_os in - aix[[4-9]]*) - # All AIX code is PIC. - if test "$host_cpu" = ia64; then - # AIX 5 now supports IA64 processor - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - else - _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp' - fi - ;; - chorus*) - case $cc_basename in - cxch68*) - # Green Hills C++ Compiler - # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a" - ;; - esac - ;; - dgux*) - case $cc_basename in - ec++*) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' - ;; - ghcx*) - # Green Hills C++ Compiler - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' - ;; - *) - ;; - esac - ;; - freebsd* | dragonfly*) - # FreeBSD uses GNU C++ - ;; - hpux9* | hpux10* | hpux11*) - case $cc_basename in - CC*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive' - if test "$host_cpu" != ia64; then - _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' - fi - ;; - aCC*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive' - case $host_cpu in - hppa*64*|ia64*) - # +Z the default - ;; - *) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' - ;; - esac - ;; - *) - ;; - esac - ;; - interix*) - # This is c89, which is MS Visual C++ (no shared libs) - # Anyone wants to do a port? - ;; - irix5* | irix6* | nonstopux*) - case $cc_basename in - CC*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' - # CC pic flag -KPIC is the default. - ;; - *) - ;; - esac - ;; - linux* | k*bsd*-gnu | kopensolaris*-gnu) - case $cc_basename in - KCC*) - # KAI C++ Compiler - _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,' - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - ;; - ecpc* ) - # old Intel C++ for x86_64 which still supported -KPIC. - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' - ;; - icpc* ) - # Intel C++, used to be incompatible with GCC. - # ICC 10 doesn't accept -KPIC any more. - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' - ;; - pgCC* | pgcpp*) - # Portland Group C++ compiler - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - ;; - cxx*) - # Compaq C++ - # Make sure the PIC flag is empty. It appears that all Alpha - # Linux and Compaq Tru64 Unix objects are PIC. - _LT_TAGVAR(lt_prog_compiler_pic, $1)= - _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' - ;; - xlc* | xlC*) - # IBM XL 8.0 on PPC - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink' - ;; - *) - case `$CC -V 2>&1 | sed 5q` in - *Sun\ C*) - # Sun C++ 5.9 - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' - ;; - esac - ;; - esac - ;; - lynxos*) - ;; - m88k*) - ;; - mvs*) - case $cc_basename in - cxx*) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall' - ;; - *) - ;; - esac - ;; - netbsd* | netbsdelf*-gnu) - ;; - *qnx* | *nto*) - # QNX uses GNU C++, but need to define -shared option too, otherwise - # it will coredump. - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' - ;; - osf3* | osf4* | osf5*) - case $cc_basename in - KCC*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,' - ;; - RCC*) - # Rational C++ 2.4.1 - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' - ;; - cxx*) - # Digital/Compaq C++ - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - # Make sure the PIC flag is empty. It appears that all Alpha - # Linux and Compaq Tru64 Unix objects are PIC. - _LT_TAGVAR(lt_prog_compiler_pic, $1)= - _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' - ;; - *) - ;; - esac - ;; - psos*) - ;; - solaris*) - case $cc_basename in - CC*) - # Sun C++ 4.2, 5.x and Centerline C++ - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' - ;; - gcx*) - # Green Hills C++ Compiler - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' - ;; - *) - ;; - esac - ;; - sunos4*) - case $cc_basename in - CC*) - # Sun C++ 4.x - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - ;; - lcc*) - # Lucid - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' - ;; - *) - ;; - esac - ;; - sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) - case $cc_basename in - CC*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - ;; - esac - ;; - tandem*) - case $cc_basename in - NCC*) - # NonStop-UX NCC 3.20 - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' - ;; - *) - ;; - esac - ;; - vxworks*) - ;; - *) - _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no - ;; - esac - fi -], -[ - if test "$GCC" = yes; then - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' - - case $host_os in - aix*) - # All AIX code is PIC. - if test "$host_cpu" = ia64; then - # AIX 5 now supports IA64 processor - _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' - fi - ;; - - amigaos*) - case $host_cpu in - powerpc) - # see comment about AmigaOS4 .so support - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - ;; - m68k) - # FIXME: we need at least 68020 code to build shared libraries, but - # adding the `-m68020' flag to GCC prevents building anything better, - # like `-m68040'. - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4' - ;; - esac - ;; - - beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) - # PIC is the default for these OSes. - ;; - - mingw* | cygwin* | pw32* | os2* | cegcc*) - # This hack is so that the source file can tell whether it is being - # built for inclusion in a dll (and should export symbols for example). - # Although the cygwin gcc ignores -fPIC, still need this for old-style - # (--disable-auto-import) libraries - m4_if([$1], [GCJ], [], - [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) - ;; - - darwin* | rhapsody*) - # PIC is the default on this platform - # Common symbols not allowed in MH_DYLIB files - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' - ;; - - hpux*) - # PIC is the default for 64-bit PA HP-UX, but not for 32-bit - # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag - # sets the default TLS model and affects inlining. - case $host_cpu in - hppa*64*) - # +Z the default - ;; - *) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - ;; - esac - ;; - - interix[[3-9]]*) - # Interix 3.x gcc -fpic/-fPIC options generate broken code. - # Instead, we relocate shared libraries at runtime. - ;; - - msdosdjgpp*) - # Just because we use GCC doesn't mean we suddenly get shared libraries - # on systems that don't support them. - _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no - enable_shared=no - ;; - - *nto* | *qnx*) - # QNX uses GNU C++, but need to define -shared option too, otherwise - # it will coredump. - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' - ;; - - sysv4*MP*) - if test -d /usr/nec; then - _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic - fi - ;; - - *) - _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' - ;; - esac - else - # PORTME Check for flag to pass linker flags through the system compiler. - case $host_os in - aix*) - _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' - if test "$host_cpu" = ia64; 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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/libeio/autogen.sh b/deps/libeio/autogen.sh deleted file mode 100755 index bd3387c46c..0000000000 --- a/deps/libeio/autogen.sh +++ /dev/null @@ -1,5 +0,0 @@ -libtoolize -aclocal -automake --add-missing -autoconf -autoheader diff --git a/deps/libeio/config.h.cmake b/deps/libeio/config.h.cmake deleted file mode 100644 index c4c128ce30..0000000000 --- a/deps/libeio/config.h.cmake +++ /dev/null @@ -1,17 +0,0 @@ -/* futimes(2) is available */ -#cmakedefine HAVE_FUTIMES 1 - -/* readahead(2) is available (linux) */ -#cmakedefine HAVE_READAHEAD 1 - -/* fdatasync(2) is available */ -#cmakedefine HAVE_FDATASYNC 1 - -/* pread(2) and pwrite(2) are available */ -#cmakedefine HAVE_PREADWRITE 1 - -/* sendfile(2) is available and supported */ -#cmakedefine HAVE_SENDFILE 1 - -/* sync_file_range(2) is available */ -#cmakedefine HAVE_SYNC_FILE_RANGE 1 diff --git a/deps/libeio/config.h.in b/deps/libeio/config.h.in deleted file mode 100644 index 73e9dd07d2..0000000000 --- a/deps/libeio/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/libeio/configure.ac b/deps/libeio/configure.ac deleted file mode 100644 index 9f4cea9d12..0000000000 --- a/deps/libeio/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/libeio/demo.c b/deps/libeio/demo.c deleted file mode 100644 index cbef59557f..0000000000 --- a/deps/libeio/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/libeio/eio.3 b/deps/libeio/eio.3 deleted file mode 100644 index ec5bde33e1..0000000000 --- a/deps/libeio/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++. Capital omega is used to do unbreakable dashes and -.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, -.\" nothing in troff, for use with C<>. -.tr \(*W- -.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' -.ie n \{\ -. ds -- \(*W- -. ds PI pi -. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch -. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch -. ds L" "" -. ds R" "" -. ds C` "" -. ds C' "" -'br\} -.el\{\ -. ds -- \|\(em\| -. ds PI \(*p -. ds L" `` -. ds R" '' -'br\} -.\" -.\" Escape single quotes in literal strings from groff's Unicode transform. -.ie \n(.g .ds Aq \(aq -.el .ds Aq ' -.\" -.\" If the F register is turned on, we'll generate index entries on stderr for -.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index -.\" entries marked with X<> in POD. Of course, you'll have to process the -.\" output yourself in some meaningful fashion. -.ie \nF \{\ -. de IX -. tm Index:\\$1\t\\n%\t"\\$2" -.. -. nr % 0 -. rr F -.\} -.el \{\ -. de IX -.. -.\} -.\" -.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). -.\" Fear. Run. Save yourself. No user-serviceable parts. -. \" fudge factors for nroff and troff -.if n \{\ -. ds #H 0 -. ds #V .8m -. ds #F .3m -. ds #[ \f1 -. ds #] \fP -.\} -.if t \{\ -. ds #H ((1u-(\\\\n(.fu%2u))*.13m) -. ds #V .6m -. ds #F 0 -. ds #[ \& -. ds #] \& -.\} -. \" simple accents for nroff and troff -.if n \{\ -. ds ' \& -. ds ` \& -. ds ^ \& -. ds , \& -. ds ~ ~ -. ds / -.\} -.if t \{\ -. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" -. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' -. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' -. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' -. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' -. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' -.\} -. \" troff and (daisy-wheel) nroff accents -.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' -.ds 8 \h'\*(#H'\(*b\h'-\*(#H' -.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] -.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' -.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' -.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] -.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] -.ds ae a\h'-(\w'a'u*4/10)'e -.ds Ae A\h'-(\w'A'u*4/10)'E -. \" corrections for vroff -.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' -.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' -. \" for low resolution devices (crt and lpr) -.if \n(.H>23 .if \n(.V>19 \ -\{\ -. ds : e -. ds 8 ss -. ds o a -. ds d- d\h'-1'\(ga -. ds D- D\h'-1'\(hy -. ds th \o'bp' -. ds Th \o'LP' -. ds ae ae -. ds Ae AE -.\} -.rm #[ #] #H #V #F C -.\" ======================================================================== -.\" -.IX Title "LIBEIO 3" -.TH LIBEIO 3 "2008-05-11" "libeio-1.0" "libeio - truly asynchronous POSIX I/O" -.\" For nroff, turn off justification. 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/libeio/eio.c b/deps/libeio/eio.c deleted file mode 100644 index 1929cf6eea..0000000000 --- a/deps/libeio/eio.c +++ /dev/null @@ -1,2128 +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 - -# include "config.h" -# 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/libeio/eio.h b/deps/libeio/eio.h deleted file mode 100644 index 1d597e1fa4..0000000000 --- a/deps/libeio/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/libeio/eio.pod b/deps/libeio/eio.pod deleted file mode 100644 index c83768ebf1..0000000000 --- a/deps/libeio/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/libeio/libeio.m4 b/deps/libeio/libeio.m4 deleted file mode 100644 index 5302cfcc91..0000000000 --- a/deps/libeio/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/libeio/wscript b/deps/libeio/wscript deleted file mode 100644 index 280dca6981..0000000000 --- a/deps/libeio/wscript +++ /dev/null @@ -1,131 +0,0 @@ -import Options -import sys - -def set_options(opt): - pass - #opt.tool_options('compiler_cc') - -def configure(conf): - print "--- libeio ---" - #conf.check_tool('compiler_cc') - - conf.check(lib='pthread', uselib_store='PTHREAD') - conf.check_cc(lib="pthread", header_name="pthread.h", function_name="pthread_create", mandatory=True) - if sys.platform.startswith("cygwin"): - conf.check_cc(lib="pthread", header_name="unistd.h", function_name="pthread_atfork", mandatory=True) - elif sys.platform.startswith("win32"): - conf.check_cc(lib="pthread", header_name="pthread.h", function_name="pthread_atfork") - else: - conf.check_cc(lib="pthread", header_name="pthread.h", function_name="pthread_atfork", mandatory=True) - - conf.check_cc(msg="Checking for futimes(2)", define_name="HAVE_FUTIMES", fragment=""" - #include - #include - #include - struct timeval tv[2]; - int res; - int fd; - int main(void) - { - res = futimes (fd, tv); - return 0; - } - """) - - conf.check_cc(msg="Checking for readahead(2)", define_name="HAVE_READAHEAD", fragment=""" - #include - int main(void) - { - int fd = 0; - size_t count = 2; - ssize_t res; - res = readahead (fd, 0, count); - return 0; - } - """) - - conf.check_cc(msg="Checking for fdatasync(2)", define_name="HAVE_FDATASYNC", fragment=""" - #include - int main(void) - { - int fd = 0; - fdatasync (fd); - return 0; - } - """) - - conf.check_cc(msg="Checking for pread(2) and pwrite(2)", define_name="HAVE_PREADWRITE", fragment=""" - #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; - } - """) - - conf.check_cc(msg="Checking for sendfile(2)" , define_name="HAVE_SENDFILE" , fragment=""" - # 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 __APPLE__ - res = sendfile (fd, fd, offset, &offset, 0, 0); - #elif __hpux - res = sendfile (fd, fd, offset, count, 0, 0); - #endif - return 0; - } - """) - - conf.env.append_value("CCFLAGS", "-D_GNU_SOURCE") - conf.check_cc(msg="Checking for sync_file_range(2) ", fragment=""" - #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; - } - """, define_name="HAVE_SYNC_FILE_RANGE") - -def build(bld): - libeio = bld.new_task_gen("cc") - libeio.source = "eio.c" - libeio.target = 'eio' - libeio.name = 'eio' - libeio.includes = '. ../..' - libeio.uselib = "PTHREAD" - libeio.install_path = None - if bld.env["USE_DEBUG"]: - libeio.clone("debug"); - if Options.options.product_type != 'program': - libeio.ccflags = "-fPIC" - bld.install_files('${PREFIX}/include/node/', 'eio.h'); - diff --git a/deps/libeio/xthread.h b/deps/libeio/xthread.h deleted file mode 100644 index 0de1a35773..0000000000 --- a/deps/libeio/xthread.h +++ /dev/null @@ -1,159 +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 -#define _WIN32_WINNT 0x400 -#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/LICENSE b/deps/uv/LICENSE index 3ed5bc5ed0..f7df47f71c 100644 --- a/deps/uv/LICENSE +++ b/deps/uv/LICENSE @@ -35,3 +35,6 @@ The externally maintained libraries used by libuv are: - libev, located at ev/ is copyright Marc Alexander Lehmann, and dual-licensed under the MIT license and GPL2. + + - libeio, located at eio/ is copyright Marc Alexander Lehmann, and + dual-licensed under the MIT license and GPL2. diff --git a/deps/uv/c-ares/ares.h b/deps/uv/c-ares/ares.h index 5c197ef0f3..45ca564612 100644 --- a/deps/uv/c-ares/ares.h +++ b/deps/uv/c-ares/ares.h @@ -96,9 +96,6 @@ typedef int ares_socklen_t; # include # include #elif defined(WIN32) -# ifndef WIN32_LEAN_AND_MEAN -# define WIN32_LEAN_AND_MEAN -# endif # include # include # include diff --git a/deps/uv/c-ares/ares_setup.h b/deps/uv/c-ares/ares_setup.h index 0d1ce0f975..8dbb9338c4 100644 --- a/deps/uv/c-ares/ares_setup.h +++ b/deps/uv/c-ares/ares_setup.h @@ -108,9 +108,6 @@ */ #ifdef HAVE_WINDOWS_H -# ifndef WIN32_LEAN_AND_MEAN -# define WIN32_LEAN_AND_MEAN -# endif # include # ifdef HAVE_WINSOCK2_H # include diff --git a/deps/uv/c-ares/config_cygwin/ares_config.h b/deps/uv/c-ares/config_cygwin/ares_config.h index 1d19328036..70595d3617 100644 --- a/deps/uv/c-ares/config_cygwin/ares_config.h +++ b/deps/uv/c-ares/config_cygwin/ares_config.h @@ -474,9 +474,6 @@ /* Version number of package */ #define VERSION "1.7.1" -/* Define to avoid automatic inclusion of winsock.h */ -/* #undef WIN32_LEAN_AND_MEAN */ - /* 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 diff --git a/deps/uv/c-ares/config_darwin/ares_config.h b/deps/uv/c-ares/config_darwin/ares_config.h index 77b6d4a3c2..3722bba10b 100644 --- a/deps/uv/c-ares/config_darwin/ares_config.h +++ b/deps/uv/c-ares/config_darwin/ares_config.h @@ -474,9 +474,6 @@ /* Version number of package */ #define VERSION "1.7.1" -/* Define to avoid automatic inclusion of winsock.h */ -/* #undef WIN32_LEAN_AND_MEAN */ - /* 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 diff --git a/deps/uv/c-ares/config_freebsd/ares_config.h b/deps/uv/c-ares/config_freebsd/ares_config.h index 79508824da..4164edb3e2 100644 --- a/deps/uv/c-ares/config_freebsd/ares_config.h +++ b/deps/uv/c-ares/config_freebsd/ares_config.h @@ -474,9 +474,6 @@ /* Version number of package */ #define VERSION "1.7.1" -/* Define to avoid automatic inclusion of winsock.h */ -/* #undef WIN32_LEAN_AND_MEAN */ - /* 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 diff --git a/deps/uv/c-ares/config_linux/ares_config.h b/deps/uv/c-ares/config_linux/ares_config.h index a2cb7f293f..dca6476eb5 100644 --- a/deps/uv/c-ares/config_linux/ares_config.h +++ b/deps/uv/c-ares/config_linux/ares_config.h @@ -474,9 +474,6 @@ /* Version number of package */ #define VERSION "1.7.1" -/* Define to avoid automatic inclusion of winsock.h */ -/* #undef WIN32_LEAN_AND_MEAN */ - /* 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 diff --git a/deps/uv/c-ares/config_openbsd/ares_config.h b/deps/uv/c-ares/config_openbsd/ares_config.h index e63bd73cc9..5e3ae68864 100644 --- a/deps/uv/c-ares/config_openbsd/ares_config.h +++ b/deps/uv/c-ares/config_openbsd/ares_config.h @@ -474,9 +474,6 @@ /* Version number of package */ #define VERSION "1.7.1" -/* Define to avoid automatic inclusion of winsock.h */ -/* #undef WIN32_LEAN_AND_MEAN */ - /* 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 diff --git a/deps/uv/c-ares/config_sunos/ares_config.h b/deps/uv/c-ares/config_sunos/ares_config.h index 0a0a54ecf8..836de9f5dd 100644 --- a/deps/uv/c-ares/config_sunos/ares_config.h +++ b/deps/uv/c-ares/config_sunos/ares_config.h @@ -474,9 +474,6 @@ /* Version number of package */ #define VERSION "1.7.1" -/* Define to avoid automatic inclusion of winsock.h */ -/* #undef WIN32_LEAN_AND_MEAN */ - /* 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 diff --git a/deps/uv/c-ares/config_win32/ares_config.h b/deps/uv/c-ares/config_win32/ares_config.h index 7942ed43c0..a1f3c320f9 100644 --- a/deps/uv/c-ares/config_win32/ares_config.h +++ b/deps/uv/c-ares/config_win32/ares_config.h @@ -474,9 +474,6 @@ /* Version number of package */ #define VERSION "1.7.3" -/* Define to avoid automatic inclusion of winsock.h */ -#define WIN32_LEAN_AND_MEAN 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 diff --git a/deps/uv/config-unix.mk b/deps/uv/config-unix.mk index ff4141fc51..5e51bb8716 100644 --- a/deps/uv/config-unix.mk +++ b/deps/uv/config-unix.mk @@ -24,8 +24,12 @@ E= CFLAGS=--std=gnu89 -Wno-variadic-macros -g LINKFLAGS=-lm +CPPFLAGS += -D_LARGEFILE_SOURCE +CPPFLAGS += -D_FILE_OFFSET_BITS=64 + ifeq (SunOS,$(uname_S)) EV_CONFIG=config_sunos.h +EIO_CONFIG=config_sunos.h CPPFLAGS += -Ic-ares/config_sunos LINKFLAGS+=-lsocket -lnsl UV_OS_FILE=uv-sunos.c @@ -33,6 +37,7 @@ endif ifeq (Darwin,$(uname_S)) EV_CONFIG=config_darwin.h +EIO_CONFIG=config_darwin.h CPPFLAGS += -Ic-ares/config_darwin LINKFLAGS+=-framework CoreServices UV_OS_FILE=uv-darwin.c @@ -40,6 +45,7 @@ endif ifeq (Linux,$(uname_S)) EV_CONFIG=config_linux.h +EIO_CONFIG=config_linux.h CPPFLAGS += -Ic-ares/config_linux LINKFLAGS+=-lrt UV_OS_FILE=uv-linux.c @@ -47,6 +53,7 @@ endif ifeq (FreeBSD,$(uname_S)) EV_CONFIG=config_freebsd.h +EIO_CONFIG=config_freebsd.h CPPFLAGS += -Ic-ares/config_freebsd LINKFLAGS+= UV_OS_FILE=uv-freebsd.c @@ -59,14 +66,15 @@ 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 $(CARES_OBJS) - $(AR) rcs uv.a uv-unix.o uv-platform.o uv-common.o ev/ev.o $(CARES_OBJS) +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-platform.o: $(UV_OS_FILE) uv.h uv-unix.h $(CC) $(CPPFLAGS) $(CFLAGS) -c $(UV_OS_FILE) -o uv-platform.o uv-unix.o: uv-unix.c uv.h uv-unix.h - $(CC) $(CPPFLAGS) $(CFLAGS) -c uv-unix.c -o uv-unix.o + $(CC) $(CPPFLAGS) -Ieio $(CFLAGS) -c uv-unix.c -o 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 @@ -74,12 +82,27 @@ uv-common.o: uv-common.c uv.h uv-unix.h ev/ev.o: ev/ev.c $(CC) $(CPPFLAGS) $(CFLAGS) -c ev/ev.c -o ev/ev.o -DEV_CONFIG_H=\"$(EV_CONFIG)\" + +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 + +uv-eio.o: uv-eio.c + $(CC) $(CPPFLAGS) -Ieio/ $(CFLAGS) -c uv-eio.c -o uv-eio.o + + clean-platform: -rm -f c-ares/*.o -rm -f ev/*.o + -rm -f 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 -rf test/run-tests.dSYM run-benchmarks.dSYM diff --git a/deps/uv/test/benchmark-ping-pongs.c b/deps/uv/test/benchmark-ping-pongs.c index 9b5543251c..1df2fcffcb 100644 --- a/deps/uv/test/benchmark-ping-pongs.c +++ b/deps/uv/test/benchmark-ping-pongs.c @@ -52,7 +52,7 @@ static int completed_pingers = 0; static int64_t start_time; -static uv_buf_t buf_alloc(uv_tcp_t* tcp, size_t size) { +static uv_buf_t buf_alloc(uv_stream_t* tcp, size_t size) { buf_t* ab; ab = buf_freelist; @@ -125,7 +125,7 @@ static void pinger_shutdown_cb(uv_handle_t* handle, int status) { } -static void pinger_read_cb(uv_tcp_t* tcp, ssize_t nread, uv_buf_t buf) { +static void pinger_read_cb(uv_stream_t* tcp, ssize_t nread, uv_buf_t buf) { unsigned int i; pinger_t* pinger; @@ -171,7 +171,7 @@ static void pinger_connect_cb(uv_req_t *req, int status) { pinger_write_ping(pinger); - if (uv_read_start((uv_tcp_t*)(req->handle), buf_alloc, pinger_read_cb)) { + if (uv_read_start((uv_stream_t*)(req->handle), buf_alloc, pinger_read_cb)) { FATAL("uv_read_start failed"); } } @@ -198,8 +198,8 @@ static void pinger_new() { uv_req_init(&pinger->connect_req, (uv_handle_t*)&pinger->tcp, pinger_connect_cb); - uv_bind(&pinger->tcp, client_addr); - r = uv_connect(&pinger->connect_req, server_addr); + uv_tcp_bind(&pinger->tcp, client_addr); + r = uv_tcp_connect(&pinger->connect_req, server_addr); ASSERT(!r); } diff --git a/deps/uv/test/benchmark-pump.c b/deps/uv/test/benchmark-pump.c index 6a8a8f03be..8ba2c37bb5 100644 --- a/deps/uv/test/benchmark-pump.c +++ b/deps/uv/test/benchmark-pump.c @@ -35,13 +35,13 @@ static int TARGET_CONNECTIONS; #define STATS_COUNT 5 -static void do_write(uv_tcp_t*); +static void do_write(uv_stream_t*); static void maybe_connect_some(); static uv_req_t* req_alloc(); static void req_free(uv_req_t* uv_req); -static uv_buf_t buf_alloc(uv_tcp_t*, size_t size); +static uv_buf_t buf_alloc(uv_stream_t*, size_t size); static void buf_free(uv_buf_t uv_buf_t); @@ -154,7 +154,7 @@ static void start_stats_collection() { } -static void read_cb(uv_tcp_t* tcp, ssize_t bytes, uv_buf_t buf) { +static void read_cb(uv_stream_t* tcp, ssize_t bytes, uv_buf_t buf) { if (nrecv_total == 0) { ASSERT(start_time == 0); uv_update_time(); @@ -183,11 +183,11 @@ static void write_cb(uv_req_t *req, int status) { nsent += sizeof write_buffer; nsent_total += sizeof write_buffer; - do_write((uv_tcp_t*)req->handle); + do_write((uv_stream_t*)req->handle); } -static void do_write(uv_tcp_t* tcp) { +static void do_write(uv_stream_t* tcp) { uv_req_t* req; uv_buf_t buf; int r; @@ -221,7 +221,7 @@ static void connect_cb(uv_req_t* req, int status) { /* Yay! start writing */ for (i = 0; i < write_sockets; i++) { - do_write(&write_handles[i]); + do_write((uv_stream_t*)&write_handles[i]); } } } @@ -241,27 +241,27 @@ static void maybe_connect_some() { req = req_alloc(); uv_req_init(req, (uv_handle_t*)tcp, connect_cb); - r = uv_connect(req, connect_addr); + r = uv_tcp_connect(req, connect_addr); ASSERT(r == 0); } } -static void connection_cb(uv_tcp_t* s, int status) { +static void connection_cb(uv_handle_t* s, int status) { uv_tcp_t* tcp; int r; - ASSERT(&server == s); + ASSERT(&server == (uv_tcp_t*)s); ASSERT(status == 0); tcp = malloc(sizeof(uv_tcp_t)); uv_tcp_init(tcp); - r = uv_accept(s, tcp); + r = uv_accept(s, (uv_stream_t*)tcp); ASSERT(r == 0); - r = uv_read_start(tcp, buf_alloc, read_cb); + r = uv_read_start((uv_stream_t*)tcp, buf_alloc, read_cb); ASSERT(r == 0); read_sockets++; @@ -317,7 +317,7 @@ typedef struct buf_list_s { static buf_list_t* buf_freelist = NULL; -static uv_buf_t buf_alloc(uv_tcp_t* tcp, size_t size) { +static uv_buf_t buf_alloc(uv_stream_t* tcp, size_t size) { buf_list_t* buf; buf = buf_freelist; @@ -351,9 +351,9 @@ HELPER_IMPL(pump_server) { /* Server */ r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind(&server, listen_addr); + r = uv_tcp_bind(&server, listen_addr); ASSERT(r == 0); - r = uv_listen(&server, MAX_WRITE_HANDLES, connection_cb); + r = uv_tcp_listen(&server, MAX_WRITE_HANDLES, connection_cb); ASSERT(r == 0); uv_run(); diff --git a/deps/uv/test/dns-server.c b/deps/uv/test/dns-server.c index 0da1880187..ec7609ccd8 100644 --- a/deps/uv/test/dns-server.c +++ b/deps/uv/test/dns-server.c @@ -52,10 +52,10 @@ static uv_tcp_t server; static void after_write(uv_req_t* req, int status); -static void after_read(uv_tcp_t*, ssize_t nread, uv_buf_t buf); +static void after_read(uv_stream_t*, ssize_t nread, uv_buf_t buf); static void on_close(uv_handle_t* peer); static void on_server_close(uv_handle_t* handle); -static void on_connection(uv_tcp_t*, int status); +static void on_connection(uv_handle_t*, int status); #define WRITE_BUF_LEN (64*1024) #define DNSREC_LEN (4) @@ -115,7 +115,7 @@ static void addrsp(write_req_t* wr, char* hdr) { wr->buf.len += rsplen; } -static void process_req(uv_tcp_t* handle, ssize_t nread, uv_buf_t buf) { +static void process_req(uv_stream_t* handle, ssize_t nread, uv_buf_t buf) { write_req_t *wr; dnshandle* dns = (dnshandle*)handle; char hdrbuf[DNSREC_LEN]; @@ -216,7 +216,7 @@ static void process_req(uv_tcp_t* handle, ssize_t nread, uv_buf_t buf) { } } -static void after_read(uv_tcp_t* handle, ssize_t nread, uv_buf_t buf) { +static void after_read(uv_stream_t* handle, ssize_t nread, uv_buf_t buf) { uv_req_t* req; if (nread < 0) { @@ -249,7 +249,7 @@ static void on_close(uv_handle_t* peer) { } -static uv_buf_t buf_alloc(uv_tcp_t* handle, size_t suggested_size) { +static uv_buf_t buf_alloc(uv_stream_t* handle, size_t suggested_size) { uv_buf_t buf; buf.base = (char*) malloc(suggested_size); buf.len = suggested_size; @@ -257,7 +257,7 @@ static uv_buf_t buf_alloc(uv_tcp_t* handle, size_t suggested_size) { } -static void on_connection(uv_tcp_t* server, int status) { +static void on_connection(uv_handle_t* server, int status) { dnshandle* handle; int r; @@ -273,10 +273,10 @@ static void on_connection(uv_tcp_t* server, int status) { uv_tcp_init((uv_tcp_t*)handle); - r = uv_accept(server, (uv_tcp_t*)handle); + r = uv_accept(server, (uv_stream_t*)handle); ASSERT(r == 0); - r = uv_read_start((uv_tcp_t*)handle, buf_alloc, after_read); + r = uv_read_start((uv_stream_t*)handle, buf_alloc, after_read); ASSERT(r == 0); } @@ -297,14 +297,14 @@ static int dns_start(int port) { return 1; } - r = uv_bind(&server, addr); + r = uv_tcp_bind(&server, addr); if (r) { /* TODO: Error codes */ fprintf(stderr, "Bind error\n"); return 1; } - r = uv_listen(&server, 128, on_connection); + r = uv_tcp_listen(&server, 128, on_connection); if (r) { /* TODO: Error codes */ fprintf(stderr, "Listen error\n"); diff --git a/deps/uv/test/echo-server.c b/deps/uv/test/echo-server.c index a3f8f29ed1..1243a9a489 100644 --- a/deps/uv/test/echo-server.c +++ b/deps/uv/test/echo-server.c @@ -36,10 +36,10 @@ static uv_tcp_t server; static void after_write(uv_req_t* req, int status); -static void after_read(uv_tcp_t*, ssize_t nread, uv_buf_t buf); +static void after_read(uv_stream_t*, ssize_t nread, uv_buf_t buf); static void on_close(uv_handle_t* peer); static void on_server_close(uv_handle_t* handle); -static void on_connection(uv_tcp_t*, int status); +static void on_connection(uv_handle_t*, int status); static void after_write(uv_req_t* req, int status) { @@ -65,7 +65,7 @@ static void after_shutdown(uv_req_t* req, int status) { } -static void after_read(uv_tcp_t* handle, ssize_t nread, uv_buf_t buf) { +static void after_read(uv_stream_t* handle, ssize_t nread, uv_buf_t buf) { int i; write_req_t *wr; uv_req_t* req; @@ -117,7 +117,7 @@ static void on_close(uv_handle_t* peer) { } -static uv_buf_t echo_alloc(uv_tcp_t* handle, size_t suggested_size) { +static uv_buf_t echo_alloc(uv_stream_t* handle, size_t suggested_size) { uv_buf_t buf; buf.base = (char*) malloc(suggested_size); buf.len = suggested_size; @@ -125,7 +125,7 @@ static uv_buf_t echo_alloc(uv_tcp_t* handle, size_t suggested_size) { } -static void on_connection(uv_tcp_t* server, int status) { +static void on_connection(uv_handle_t* server, int status) { uv_tcp_t* handle; int r; @@ -136,10 +136,10 @@ static void on_connection(uv_tcp_t* server, int status) { uv_tcp_init(handle); - r = uv_accept(server, handle); + r = uv_accept(server, (uv_stream_t*)handle); ASSERT(r == 0); - r = uv_read_start(handle, echo_alloc, after_read); + r = uv_read_start((uv_stream_t*)handle, echo_alloc, after_read); ASSERT(r == 0); } @@ -160,14 +160,14 @@ static int echo_start(int port) { return 1; } - r = uv_bind(&server, addr); + r = uv_tcp_bind(&server, addr); if (r) { /* TODO: Error codes */ fprintf(stderr, "Bind error\n"); return 1; } - r = uv_listen(&server, 128, on_connection); + r = uv_tcp_listen(&server, 128, on_connection); if (r) { /* TODO: Error codes */ fprintf(stderr, "Listen error\n"); diff --git a/deps/uv/test/test-bind-error.c b/deps/uv/test/test-bind-error.c index 76d03e7548..443c204bf0 100644 --- a/deps/uv/test/test-bind-error.c +++ b/deps/uv/test/test-bind-error.c @@ -43,17 +43,17 @@ TEST_IMPL(bind_error_addrinuse) { r = uv_tcp_init(&server1); ASSERT(r == 0); - r = uv_bind(&server1, addr); + r = uv_tcp_bind(&server1, addr); ASSERT(r == 0); r = uv_tcp_init(&server2); ASSERT(r == 0); - r = uv_bind(&server2, addr); + r = uv_tcp_bind(&server2, addr); ASSERT(r == 0); - r = uv_listen(&server1, 128, NULL); + r = uv_tcp_listen(&server1, 128, NULL); ASSERT(r == 0); - r = uv_listen(&server2, 128, NULL); + r = uv_tcp_listen(&server2, 128, NULL); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EADDRINUSE); @@ -78,7 +78,7 @@ TEST_IMPL(bind_error_addrnotavail_1) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind(&server, addr); + r = uv_tcp_bind(&server, addr); /* It seems that Linux is broken here - bind succeeds. */ if (r == -1) { @@ -104,7 +104,7 @@ TEST_IMPL(bind_error_addrnotavail_2) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind(&server, addr); + r = uv_tcp_bind(&server, addr); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EADDRNOTAVAIL); @@ -130,7 +130,7 @@ TEST_IMPL(bind_error_fault) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind(&server, *garbage_addr); + r = uv_tcp_bind(&server, *garbage_addr); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EFAULT); @@ -156,9 +156,9 @@ TEST_IMPL(bind_error_inval) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind(&server, addr1); + r = uv_tcp_bind(&server, addr1); ASSERT(r == 0); - r = uv_bind(&server, addr2); + r = uv_tcp_bind(&server, addr2); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EINVAL); @@ -183,7 +183,7 @@ TEST_IMPL(bind_localhost_ok) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind(&server, addr); + r = uv_tcp_bind(&server, addr); ASSERT(r == 0); return 0; diff --git a/deps/uv/test/test-bind6-error.c b/deps/uv/test/test-bind6-error.c index e3db4813d7..6f6cd8d0aa 100644 --- a/deps/uv/test/test-bind6-error.c +++ b/deps/uv/test/test-bind6-error.c @@ -43,17 +43,17 @@ TEST_IMPL(bind6_error_addrinuse) { r = uv_tcp_init(&server1); ASSERT(r == 0); - r = uv_bind6(&server1, addr); + r = uv_tcp_bind6(&server1, addr); ASSERT(r == 0); r = uv_tcp_init(&server2); ASSERT(r == 0); - r = uv_bind6(&server2, addr); + r = uv_tcp_bind6(&server2, addr); ASSERT(r == 0); - r = uv_listen(&server1, 128, NULL); + r = uv_tcp_listen(&server1, 128, NULL); ASSERT(r == 0); - r = uv_listen(&server2, 128, NULL); + r = uv_tcp_listen(&server2, 128, NULL); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EADDRINUSE); @@ -78,7 +78,7 @@ TEST_IMPL(bind6_error_addrnotavail) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind6(&server, addr); + r = uv_tcp_bind6(&server, addr); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EADDRNOTAVAIL); @@ -104,7 +104,7 @@ TEST_IMPL(bind6_error_fault) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind6(&server, *garbage_addr); + r = uv_tcp_bind6(&server, *garbage_addr); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EFAULT); @@ -130,9 +130,9 @@ TEST_IMPL(bind6_error_inval) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind6(&server, addr1); + r = uv_tcp_bind6(&server, addr1); ASSERT(r == 0); - r = uv_bind6(&server, addr2); + r = uv_tcp_bind6(&server, addr2); ASSERT(r == -1); ASSERT(uv_last_error().code == UV_EINVAL); @@ -157,7 +157,7 @@ TEST_IMPL(bind6_localhost_ok) { r = uv_tcp_init(&server); ASSERT(r == 0); - r = uv_bind6(&server, addr); + r = uv_tcp_bind6(&server, addr); ASSERT(r == 0); return 0; diff --git a/deps/uv/test/test-callback-stack.c b/deps/uv/test/test-callback-stack.c index 1e49268741..883d4003b8 100644 --- a/deps/uv/test/test-callback-stack.c +++ b/deps/uv/test/test-callback-stack.c @@ -43,7 +43,7 @@ static int bytes_received = 0; static int shutdown_cb_called = 0; -static uv_buf_t alloc_cb(uv_tcp_t* tcp, size_t size) { +static uv_buf_t alloc_cb(uv_stream_t* tcp, size_t size) { uv_buf_t buf; buf.len = size; buf.base = (char*) malloc(size); @@ -67,7 +67,7 @@ static void shutdown_cb(uv_req_t* req, int status) { } -static void read_cb(uv_tcp_t* tcp, ssize_t nread, uv_buf_t buf) { +static void read_cb(uv_stream_t* tcp, ssize_t nread, uv_buf_t buf) { ASSERT(nested == 0 && "read_cb must be called from a fresh stack"); printf("Read. nread == %d\n", nread); @@ -119,7 +119,7 @@ static void timer_cb(uv_timer_t* handle, int status) { puts("Timeout complete. Now read data..."); nested++; - if (uv_read_start(&client, alloc_cb, read_cb)) { + if (uv_read_start((uv_stream_t*)&client, alloc_cb, read_cb)) { FATAL("uv_read_start failed"); } nested--; @@ -192,8 +192,8 @@ TEST_IMPL(callback_stack) { nested++; uv_req_init(&connect_req, (uv_handle_t*)&client, connect_cb); - if (uv_connect(&connect_req, addr)) { - FATAL("uv_connect failed"); + if (uv_tcp_connect(&connect_req, addr)) { + FATAL("uv_tcp_connect failed"); } nested--; diff --git a/deps/uv/test/test-connection-fail.c b/deps/uv/test/test-connection-fail.c index 01b4ca476e..405d218101 100644 --- a/deps/uv/test/test-connection-fail.c +++ b/deps/uv/test/test-connection-fail.c @@ -105,8 +105,8 @@ void connection_fail(uv_connect_cb connect_cb) { /* so these handles can be pre-initialized. */ uv_req_init(&req, (uv_handle_t*)&tcp, connect_cb); - uv_bind(&tcp, client_addr); - r = uv_connect(&req, server_addr); + uv_tcp_bind(&tcp, client_addr); + r = uv_tcp_connect(&req, server_addr); ASSERT(!r); uv_run(); diff --git a/deps/uv/test/test-delayed-accept.c b/deps/uv/test/test-delayed-accept.c index 6f2ec77681..f0bb6f1754 100644 --- a/deps/uv/test/test-delayed-accept.c +++ b/deps/uv/test/test-delayed-accept.c @@ -32,7 +32,7 @@ static int close_cb_called = 0; static int connect_cb_called = 0; -static uv_buf_t alloc_cb(uv_tcp_t* tcp, size_t size) { +static uv_buf_t alloc_cb(uv_stream_t* tcp, size_t size) { uv_buf_t buf; buf.base = (char*)malloc(size); buf.len = size; @@ -65,7 +65,7 @@ static void do_accept(uv_timer_t* timer_handle, int status) { tcpcnt = uv_counters()->tcp_init; server = (uv_tcp_t*)timer_handle->data; - r = uv_accept(server, accepted_handle); + r = uv_accept((uv_handle_t*)server, (uv_stream_t*)accepted_handle); ASSERT(r == 0); ASSERT(uv_counters()->tcp_init == tcpcnt); @@ -88,7 +88,7 @@ static void do_accept(uv_timer_t* timer_handle, int status) { } -static void connection_cb(uv_tcp_t* tcp, int status) { +static void connection_cb(uv_handle_t* tcp, int status) { int r; uv_timer_t* timer_handle; @@ -122,15 +122,15 @@ static void start_server() { ASSERT(uv_counters()->tcp_init == 1); ASSERT(uv_counters()->handle_init == 1); - r = uv_bind(server, addr); + r = uv_tcp_bind(server, addr); ASSERT(r == 0); - r = uv_listen(server, 128, connection_cb); + r = uv_tcp_listen(server, 128, connection_cb); ASSERT(r == 0); } -static void read_cb(uv_tcp_t* tcp, ssize_t nread, uv_buf_t buf) { +static void read_cb(uv_stream_t* tcp, ssize_t nread, uv_buf_t buf) { /* The server will not send anything, it should close gracefully. */ if (buf.base) { @@ -157,7 +157,7 @@ static void connect_cb(uv_req_t* req, int status) { /* Not that the server will send anything, but otherwise we'll never know */ /* when te server closes the connection. */ - r = uv_read_start((uv_tcp_t*)(req->handle), alloc_cb, read_cb); + r = uv_read_start((uv_stream_t*)(req->handle), alloc_cb, read_cb); ASSERT(r == 0); connect_cb_called++; @@ -179,7 +179,7 @@ static void client_connect() { ASSERT(r == 0); uv_req_init(connect_req, (uv_handle_t*)client, connect_cb); - r = uv_connect(connect_req, addr); + r = uv_tcp_connect(connect_req, addr); ASSERT(r == 0); } diff --git a/deps/uv/test/test-ping-pong.c b/deps/uv/test/test-ping-pong.c index d8bf13d1f0..1858adc825 100644 --- a/deps/uv/test/test-ping-pong.c +++ b/deps/uv/test/test-ping-pong.c @@ -48,7 +48,7 @@ typedef struct { void pinger_try_read(pinger_t* pinger); -static uv_buf_t alloc_cb(uv_tcp_t* tcp, size_t size) { +static uv_buf_t alloc_cb(uv_stream_t* tcp, size_t size) { uv_buf_t buf; buf.base = (char*)malloc(size); buf.len = size; @@ -92,7 +92,7 @@ static void pinger_write_ping(pinger_t* pinger) { } -static void pinger_read_cb(uv_tcp_t* tcp, ssize_t nread, uv_buf_t buf) { +static void pinger_read_cb(uv_stream_t* tcp, ssize_t nread, uv_buf_t buf) { unsigned int i; pinger_t* pinger; @@ -137,7 +137,7 @@ static void pinger_on_connect(uv_req_t *req, int status) { pinger_write_ping(pinger); - uv_read_start((uv_tcp_t*)(req->handle), alloc_cb, pinger_read_cb); + uv_read_start((uv_stream_t*)(req->handle), alloc_cb, pinger_read_cb); } @@ -160,7 +160,7 @@ static void pinger_new() { uv_req_init(&pinger->connect_req, (uv_handle_t*)(&pinger->tcp), pinger_on_connect); - r = uv_connect(&pinger->connect_req, server_addr); + r = uv_tcp_connect(&pinger->connect_req, server_addr); ASSERT(!r); } diff --git a/deps/uv/test/test-shutdown-eof.c b/deps/uv/test/test-shutdown-eof.c index 8964507133..3b7febf276 100644 --- a/deps/uv/test/test-shutdown-eof.c +++ b/deps/uv/test/test-shutdown-eof.c @@ -37,7 +37,7 @@ static int called_timer_close_cb; static int called_timer_cb; -static uv_buf_t alloc_cb(uv_tcp_t* tcp, size_t size) { +static uv_buf_t alloc_cb(uv_stream_t* tcp, size_t size) { uv_buf_t buf; buf.base = (char*)malloc(size); buf.len = size; @@ -45,10 +45,10 @@ static uv_buf_t alloc_cb(uv_tcp_t* tcp, size_t size) { } -static void read_cb(uv_tcp_t* t, ssize_t nread, uv_buf_t buf) { +static void read_cb(uv_stream_t* t, ssize_t nread, uv_buf_t buf) { uv_err_t err = uv_last_error(); - ASSERT(t == &tcp); + ASSERT((uv_tcp_t*)t == &tcp); if (nread == 0) { ASSERT(err.code == UV_EAGAIN); @@ -92,7 +92,7 @@ static void connect_cb(uv_req_t *req, int status) { ASSERT(req == &connect_req); /* Start reading from our connection so we can receive the EOF. */ - uv_read_start(&tcp, alloc_cb, read_cb); + uv_read_start((uv_stream_t*)&tcp, alloc_cb, read_cb); /* * Write the letter 'Q' to gracefully kill the echo-server. This will not @@ -166,7 +166,7 @@ TEST_IMPL(shutdown_eof) { ASSERT(!r); uv_req_init(&connect_req, (uv_handle_t*) &tcp, connect_cb); - r = uv_connect(&connect_req, server_addr); + r = uv_tcp_connect(&connect_req, server_addr); ASSERT(!r); uv_run(); diff --git a/deps/uv/test/test-tcp-writealot.c b/deps/uv/test/test-tcp-writealot.c index 5105a0477a..6d9b00f20f 100644 --- a/deps/uv/test/test-tcp-writealot.c +++ b/deps/uv/test/test-tcp-writealot.c @@ -45,7 +45,7 @@ static int bytes_received = 0; static int bytes_received_done = 0; -static uv_buf_t alloc_cb(uv_tcp_t* tcp, size_t size) { +static uv_buf_t alloc_cb(uv_stream_t* tcp, size_t size) { uv_buf_t buf; buf.base = (char*)malloc(size); buf.len = size; @@ -83,7 +83,7 @@ static void shutdown_cb(uv_req_t* req, int status) { } -static void read_cb(uv_tcp_t* tcp, ssize_t nread, uv_buf_t buf) { +static void read_cb(uv_stream_t* tcp, ssize_t nread, uv_buf_t buf) { ASSERT(tcp != NULL); if (nread < 0) { @@ -161,7 +161,7 @@ static void connect_cb(uv_req_t* req, int status) { ASSERT(req != NULL); uv_req_init(req, (uv_handle_t*)tcp, read_cb); - r = uv_read_start(tcp, alloc_cb, read_cb); + r = uv_read_start((uv_stream_t*)tcp, alloc_cb, read_cb); ASSERT(r == 0); } @@ -185,7 +185,7 @@ TEST_IMPL(tcp_writealot) { ASSERT(r == 0); uv_req_init(connect_req, (uv_handle_t*)client, connect_cb); - r = uv_connect(connect_req, addr); + r = uv_tcp_connect(connect_req, addr); ASSERT(r == 0); uv_run(); diff --git a/deps/uv/uv-linux.c b/deps/uv/uv-linux.c index 2d26c9bc56..8f088043eb 100644 --- a/deps/uv/uv-linux.c +++ b/deps/uv/uv-linux.c @@ -24,6 +24,9 @@ #include #include +#undef NANOSEC +#define NANOSEC 1000000 + /* * There's probably some way to get time from Linux than gettimeofday(). What * it is, I don't know. diff --git a/deps/uv/uv-unix.c b/deps/uv/uv-unix.c index 5e21dfcc48..db3ce11876 100644 --- a/deps/uv/uv-unix.c +++ b/deps/uv/uv-unix.c @@ -20,6 +20,7 @@ #include "uv.h" #include "uv-common.h" +#include "uv-eio.h" #include /* NULL */ #include /* printf */ @@ -64,7 +65,6 @@ static void uv__tcp_connect(uv_tcp_t*); int uv_tcp_open(uv_tcp_t*, int fd); static void uv__finish_close(uv_handle_t* handle); - /* flags */ enum { UV_CLOSING = 0x00000001, /* uv_close() called but not finished. */ @@ -310,7 +310,7 @@ int uv__bind(uv_tcp_t* tcp, int domain, struct sockaddr* addr, int addrsize) { } -int uv_bind(uv_tcp_t* tcp, struct sockaddr_in addr) { +int uv_tcp_bind(uv_tcp_t* tcp, struct sockaddr_in addr) { if (addr.sin_family != AF_INET) { uv_err_new((uv_handle_t*)tcp, EFAULT); return -1; @@ -320,7 +320,7 @@ int uv_bind(uv_tcp_t* tcp, struct sockaddr_in addr) { } -int uv_bind6(uv_tcp_t* tcp, struct sockaddr_in6 addr) { +int uv_tcp_bind6(uv_tcp_t* tcp, struct sockaddr_in6 addr) { if (addr.sin6_family != AF_INET6) { uv_err_new((uv_handle_t*)tcp, EFAULT); return -1; @@ -391,12 +391,12 @@ void uv__server_io(EV_P_ ev_io* watcher, int revents) { return; } else { uv_err_new((uv_handle_t*)tcp, errno); - tcp->connection_cb(tcp, -1); + tcp->connection_cb((uv_handle_t*)tcp, -1); } } else { tcp->accepted_fd = fd; - tcp->connection_cb(tcp, 0); + tcp->connection_cb((uv_handle_t*)tcp, 0); if (tcp->accepted_fd >= 0) { /* The user hasn't yet accepted called uv_accept() */ ev_io_stop(EV_DEFAULT_ &tcp->read_watcher); @@ -407,26 +407,29 @@ void uv__server_io(EV_P_ ev_io* watcher, int revents) { } -int uv_accept(uv_tcp_t* server, uv_tcp_t* client) { - if (server->accepted_fd < 0) { - uv_err_new((uv_handle_t*) server, EAGAIN); +int uv_accept(uv_handle_t* server, uv_stream_t* client) { + uv_tcp_t* tcpServer = (uv_tcp_t*)server; + uv_tcp_t* tcpClient = (uv_tcp_t*)client; + + if (tcpServer->accepted_fd < 0) { + uv_err_new(server, EAGAIN); return -1; } - if (uv_tcp_open(client, server->accepted_fd)) { + if (uv_tcp_open(tcpClient, tcpServer->accepted_fd)) { /* Ignore error for now */ - server->accepted_fd = -1; - close(server->accepted_fd); + tcpServer->accepted_fd = -1; + close(tcpServer->accepted_fd); return -1; } else { - server->accepted_fd = -1; - ev_io_start(EV_DEFAULT_ &server->read_watcher); + tcpServer->accepted_fd = -1; + ev_io_start(EV_DEFAULT_ &tcpServer->read_watcher); return 0; } } -int uv_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) { +int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) { int r; assert(tcp->fd >= 0); @@ -723,7 +726,7 @@ void uv__read(uv_tcp_t* tcp) { */ while (tcp->read_cb && uv_flag_is_set((uv_handle_t*)tcp, UV_READING)) { assert(tcp->alloc_cb); - buf = tcp->alloc_cb(tcp, 64 * 1024); + buf = tcp->alloc_cb((uv_stream_t*)tcp, 64 * 1024); assert(buf.len > 0); assert(buf.base); @@ -740,12 +743,12 @@ void uv__read(uv_tcp_t* tcp) { ev_io_start(EV_DEFAULT_UC_ &tcp->read_watcher); } uv_err_new((uv_handle_t*)tcp, EAGAIN); - tcp->read_cb(tcp, 0, buf); + tcp->read_cb((uv_stream_t*)tcp, 0, buf); return; } else { /* Error. User should call uv_close(). */ uv_err_new((uv_handle_t*)tcp, errno); - tcp->read_cb(tcp, -1, buf); + tcp->read_cb((uv_stream_t*)tcp, -1, buf); assert(!ev_is_active(&tcp->read_watcher)); return; } @@ -753,11 +756,11 @@ void uv__read(uv_tcp_t* tcp) { /* EOF */ uv_err_new_artificial((uv_handle_t*)tcp, UV_EOF); ev_io_stop(EV_DEFAULT_UC_ &tcp->read_watcher); - tcp->read_cb(tcp, -1, buf); + tcp->read_cb((uv_stream_t*)tcp, -1, buf); return; } else { /* Successful read */ - tcp->read_cb(tcp, nread, buf); + tcp->read_cb((uv_stream_t*)tcp, nread, buf); } } } @@ -873,7 +876,7 @@ static void uv__tcp_connect(uv_tcp_t* tcp) { } -int uv_connect(uv_req_t* req, struct sockaddr_in addr) { +int uv_tcp_connect(uv_req_t* req, struct sockaddr_in addr) { uv_tcp_t* tcp = (uv_tcp_t*)req->handle; int addrsize; int r; @@ -1027,7 +1030,9 @@ int64_t uv_now() { } -int uv_read_start(uv_tcp_t* tcp, uv_alloc_cb alloc_cb, uv_read_cb read_cb) { +int uv_read_start(uv_stream_t* stream, uv_alloc_cb alloc_cb, uv_read_cb read_cb) { + uv_tcp_t* tcp = (uv_tcp_t*)stream; + /* The UV_READING flag is irrelevant of the state of the tcp - it just * expresses the desired state of the user. */ @@ -1052,7 +1057,9 @@ int uv_read_start(uv_tcp_t* tcp, uv_alloc_cb alloc_cb, uv_read_cb read_cb) { } -int uv_read_stop(uv_tcp_t* tcp) { +int uv_read_stop(uv_stream_t* stream) { + uv_tcp_t* tcp = (uv_tcp_t*)stream; + uv_flag_unset((uv_handle_t*)tcp, UV_READING); ev_io_stop(EV_DEFAULT_UC_ &tcp->read_watcher); @@ -1482,12 +1489,79 @@ void uv_ares_destroy(ares_channel channel) { } +static int uv_getaddrinfo_done(eio_req* req) { + uv_getaddrinfo_t* handle = req->data; + + uv_unref(); + + free(handle->hints); + free(handle->service); + free(handle->hostname); + + if (handle->retcode != 0) { + /* TODO how to display gai error strings? */ + uv_err_new(NULL, handle->retcode); + } + + handle->cb(handle, handle->retcode, handle->res); + + freeaddrinfo(handle->res); + handle->res = NULL; + + return 0; +} + + +static int getaddrinfo_thread_proc(eio_req *req) { + uv_getaddrinfo_t* handle = req->data; + + handle->retcode = getaddrinfo(handle->hostname, + handle->service, + &handle->hints, + &handle->res); + return 0; +} + + /* stub implementation of uv_getaddrinfo */ int uv_getaddrinfo(uv_getaddrinfo_t* handle, - uv_getaddrinfo_cb getaddrinfo_cb, - const char* node, + uv_getaddrinfo_cb cb, + const char* hostname, const char* service, const struct addrinfo* hints) { - return -1; + uv_eio_init(); + + if (handle == NULL || cb == NULL || + (hostname == NULL && service == NULL)) { + uv_err_new_artificial(NULL, UV_EINVAL); + return -1; + } + + memset(handle, 0, sizeof(uv_getaddrinfo_t)); + + /* TODO don't alloc so much. */ + + if (hints) { + handle->hints = malloc(sizeof(struct addrinfo)); + memcpy(&handle->hints, hints, sizeof(struct addrinfo)); + } + + /* TODO security! check lengths, check return values. */ + + handle->cb = cb; + handle->hostname = hostname ? strdup(hostname) : NULL; + handle->service = service ? strdup(service) : NULL; + + /* TODO check handle->hostname == NULL */ + /* TODO check handle->service == NULL */ + + uv_ref(); + + eio_req* req = eio_custom(getaddrinfo_thread_proc, EIO_PRI_DEFAULT, + uv_getaddrinfo_done, handle); + assert(req); + assert(req->data == handle); + + return 0; } diff --git a/deps/uv/uv-unix.h b/deps/uv/uv-unix.h index f1eb773d15..576598aea6 100644 --- a/deps/uv/uv-unix.h +++ b/deps/uv/uv-unix.h @@ -55,11 +55,14 @@ typedef struct { ev_idle next_watcher; +#define UV_STREAM_PRIVATE_FIELDS \ + uv_read_cb read_cb; \ + uv_alloc_cb alloc_cb; + + /* UV_TCP */ #define UV_TCP_PRIVATE_FIELDS \ int delayed_error; \ - uv_read_cb read_cb; \ - uv_alloc_cb alloc_cb; \ uv_connection_cb connection_cb; \ int accepted_fd; \ uv_req_t *connect_req; \ @@ -99,14 +102,17 @@ typedef struct { ev_timer timer_watcher; \ uv_timer_cb timer_cb; - -#define UV_ARES_ACTION_PRIVATE_FIELDS /* TODO */ - #define UV_ARES_TASK_PRIVATE_FIELDS \ int sock; \ ev_io read_watcher; \ ev_io write_watcher; -#define UV_GETADDRINFO_PRIVATE_FIELDS /* TODO */ +#define UV_GETADDRINFO_PRIVATE_FIELDS \ + uv_getaddrinfo_cb cb; \ + struct addrinfo* hints; \ + char* hostname; \ + char* service; \ + struct addrinfo* res; \ + int retcode; #endif /* UV_UNIX_H */ diff --git a/deps/uv/uv-win.c b/deps/uv/uv-win.c index 617fe012ef..61719798d4 100644 --- a/deps/uv/uv-win.c +++ b/deps/uv/uv-win.c @@ -229,16 +229,19 @@ struct uv_ares_action_s { void uv_ares_process(uv_ares_action_t* handle, uv_req_t* req); void uv_ares_task_cleanup(uv_ares_task_t* handle, uv_req_t* req); +void uv_ares_poll(uv_timer_t* handle, int status); /* memory used per ares_channel */ struct uv_ares_channel_s { ares_channel channel; + int activesockets; + uv_timer_t pollingtimer; }; typedef struct uv_ares_channel_s uv_ares_channel_t; /* static data to hold single ares_channel */ -static uv_ares_channel_t uv_ares_data = { NULL }; +static uv_ares_channel_t uv_ares_data = { NULL, 0 }; /* default timeout per socket request if ares does not specify value */ /* use 20 sec */ @@ -797,7 +800,7 @@ int uv__bind(uv_tcp_t* handle, int domain, struct sockaddr* addr, int addrsize) } -int uv_bind(uv_tcp_t* handle, struct sockaddr_in addr) { +int uv_tcp_bind(uv_tcp_t* handle, struct sockaddr_in addr) { if (addr.sin_family != AF_INET) { uv_set_sys_error(WSAEFAULT); return -1; @@ -807,7 +810,7 @@ int uv_bind(uv_tcp_t* handle, struct sockaddr_in addr) { } -int uv_bind6(uv_tcp_t* handle, struct sockaddr_in6 addr) { +int uv_tcp_bind6(uv_tcp_t* handle, struct sockaddr_in6 addr) { if (addr.sin6_family != AF_INET6) { uv_set_sys_error(WSAEFAULT); return -1; @@ -904,7 +907,7 @@ static void uv_queue_read(uv_tcp_t* handle) { } -int uv_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb) { +int uv_tcp_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb) { assert(backlog > 0); if (handle->flags & UV_HANDLE_BIND_ERROR) { @@ -934,32 +937,34 @@ int uv_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb) { } -int uv_accept(uv_tcp_t* server, uv_tcp_t* client) { +int uv_accept(uv_handle_t* server, uv_stream_t* client) { int rv = 0; - - if (server->accept_socket == INVALID_SOCKET) { + uv_tcp_t* tcpServer = (uv_tcp_t*)server; + uv_tcp_t* tcpClient = (uv_tcp_t*)client; + + if (tcpServer->accept_socket == INVALID_SOCKET) { uv_set_sys_error(WSAENOTCONN); return -1; } - if (uv_tcp_set_socket(client, server->accept_socket) == -1) { - closesocket(server->accept_socket); + if (uv_tcp_set_socket(tcpClient, tcpServer->accept_socket) == -1) { + closesocket(tcpServer->accept_socket); rv = -1; } else { - uv_tcp_init_connection(client); + uv_tcp_init_connection(tcpClient); } - server->accept_socket = INVALID_SOCKET; + tcpServer->accept_socket = INVALID_SOCKET; - if (!(server->flags & UV_HANDLE_CLOSING)) { - uv_queue_accept(server); + if (!(tcpServer->flags & UV_HANDLE_CLOSING)) { + uv_queue_accept(tcpServer); } return rv; } -int uv_read_start(uv_tcp_t* handle, uv_alloc_cb alloc_cb, uv_read_cb read_cb) { +int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb, uv_read_cb read_cb) { if (!(handle->flags & UV_HANDLE_CONNECTION)) { uv_set_sys_error(WSAEINVAL); return -1; @@ -982,20 +987,20 @@ int uv_read_start(uv_tcp_t* handle, uv_alloc_cb alloc_cb, uv_read_cb read_cb) { /* If reading was stopped and then started again, there could stell be a */ /* read request pending. */ if (!(handle->read_req.flags & UV_REQ_PENDING)) - uv_queue_read(handle); + uv_queue_read((uv_tcp_t*)handle); return 0; } -int uv_read_stop(uv_tcp_t* handle) { +int uv_read_stop(uv_stream_t* handle) { handle->flags &= ~UV_HANDLE_READING; return 0; } -int uv_connect(uv_req_t* req, struct sockaddr_in addr) { +int uv_tcp_connect(uv_req_t* req, struct sockaddr_in addr) { int addrsize = sizeof(struct sockaddr_in); BOOL success; DWORD bytes; @@ -1014,7 +1019,7 @@ int uv_connect(uv_req_t* req, struct sockaddr_in addr) { } if (!(handle->flags & UV_HANDLE_BOUND) && - uv_bind(handle, uv_addr_ip4_any_) < 0) + uv_tcp_bind(handle, uv_addr_ip4_any_) < 0) return -1; memset(&req->overlapped, 0, sizeof(req->overlapped)); @@ -1167,13 +1172,13 @@ static void uv_tcp_return_req(uv_tcp_t* handle, uv_req_t* req) { uv_last_error_ = req->error; buf.base = 0; buf.len = 0; - handle->read_cb(handle, -1, buf); + handle->read_cb((uv_stream_t*)handle, -1, buf); break; } /* Do nonblocking reads until the buffer is empty */ while (handle->flags & UV_HANDLE_READING) { - buf = handle->alloc_cb(handle, 65536); + buf = handle->alloc_cb((uv_stream_t*)handle, 65536); assert(buf.len > 0); flags = 0; if (WSARecv(handle->socket, @@ -1185,7 +1190,7 @@ static void uv_tcp_return_req(uv_tcp_t* handle, uv_req_t* req) { NULL) != SOCKET_ERROR) { if (bytes > 0) { /* Successful read */ - handle->read_cb(handle, bytes, buf); + handle->read_cb((uv_stream_t*)handle, bytes, buf); /* Read again only if bytes == buf.len */ if (bytes < buf.len) { break; @@ -1196,7 +1201,7 @@ static void uv_tcp_return_req(uv_tcp_t* handle, uv_req_t* req) { handle->flags |= UV_HANDLE_EOF; uv_last_error_.code = UV_EOF; uv_last_error_.sys_errno_ = ERROR_SUCCESS; - handle->read_cb(handle, -1, buf); + handle->read_cb((uv_stream_t*)handle, -1, buf); break; } } else { @@ -1204,11 +1209,11 @@ static void uv_tcp_return_req(uv_tcp_t* handle, uv_req_t* req) { if (err == WSAEWOULDBLOCK) { /* Read buffer was completely empty, report a 0-byte read. */ uv_set_sys_error(WSAEWOULDBLOCK); - handle->read_cb(handle, 0, buf); + handle->read_cb((uv_stream_t*)handle, 0, buf); } else { /* Ouch! serious error. */ uv_set_sys_error(err); - handle->read_cb(handle, -1, buf); + handle->read_cb((uv_stream_t*)handle, -1, buf); } break; } @@ -1231,7 +1236,7 @@ static void uv_tcp_return_req(uv_tcp_t* handle, uv_req_t* req) { handle->flags &= ~UV_HANDLE_LISTENING; if (handle->connection_cb) { uv_last_error_ = req->error; - handle->connection_cb(handle, -1); + handle->connection_cb((uv_handle_t*)handle, -1); } break; } @@ -1244,7 +1249,7 @@ static void uv_tcp_return_req(uv_tcp_t* handle, uv_req_t* req) { sizeof(handle->socket)) == 0) { /* Accept and SO_UPDATE_ACCEPT_CONTEXT were successful. */ if (handle->connection_cb) { - handle->connection_cb(handle, 0); + handle->connection_cb((uv_handle_t*)handle, 0); } } else { /* Error related to accepted socket is ignored because the server */ @@ -1856,6 +1861,8 @@ VOID CALLBACK uv_ares_socksignal_tp(void* parameter, BOOLEAN timerfired) { void uv_ares_sockstate_cb(void *data, ares_socket_t sock, int read, int write) { /* look to see if we have a handle for this socket in our list */ uv_ares_task_t* uv_handle_ares = uv_find_ares_handle(sock); + uv_ares_channel_t* uv_ares_data_ptr = (uv_ares_channel_t*)data; + struct timeval tv; struct timeval* tvptr; int timeoutms = 0; @@ -1911,7 +1918,7 @@ void uv_ares_sockstate_cb(void *data, ares_socket_t sock, int read, int write) { } uv_handle_ares->type = UV_ARES_TASK; uv_handle_ares->close_cb = NULL; - uv_handle_ares->data = ((uv_ares_channel_t*)data)->channel; + uv_handle_ares->data = uv_ares_data_ptr; uv_handle_ares->sock = sock; uv_handle_ares->h_wait = NULL; uv_handle_ares->flags = 0; @@ -1930,20 +1937,24 @@ void uv_ares_sockstate_cb(void *data, ares_socket_t sock, int read, int write) { /* add handle to list */ uv_add_ares_handle(uv_handle_ares); uv_refs_++; - tv.tv_sec = 0; - tvptr = ares_timeout(((uv_ares_channel_t*)data)->channel, NULL, &tv); - if (tvptr) { - timeoutms = (tvptr->tv_sec * 1000) + (tvptr->tv_usec / 1000); - } else { - timeoutms = ARES_TIMEOUT_MS; + + /* + * we have a single polling timer for all ares sockets. + * This is preferred to using ares_timeout. See ares_timeout.c warning. + * if timer is not running start it, and keep socket count + */ + if (uv_ares_data_ptr->activesockets == 0) { + uv_timer_init(&uv_ares_data_ptr->pollingtimer); + uv_timer_start(&uv_ares_data_ptr->pollingtimer, uv_ares_poll, 1000L, 1000L); } + uv_ares_data_ptr->activesockets++; /* specify thread pool function to call when event is signaled */ if (RegisterWaitForSingleObject(&uv_handle_ares->h_wait, uv_handle_ares->h_event, uv_ares_socksignal_tp, (void*)uv_handle_ares, - timeoutms, + INFINITE, WT_EXECUTEINWAITTHREAD) == 0) { uv_fatal_error(GetLastError(), "RegisterWaitForSingleObject"); } @@ -1958,8 +1969,9 @@ void uv_ares_sockstate_cb(void *data, ares_socket_t sock, int read, int write) { /* called via uv_poll when ares completion port signaled */ void uv_ares_process(uv_ares_action_t* handle, uv_req_t* req) { + uv_ares_channel_t* uv_ares_data_ptr = (uv_ares_channel_t*)handle->data; - ares_process_fd( (ares_channel)handle->data, + ares_process_fd(uv_ares_data_ptr->channel, handle->read ? handle->sock : INVALID_SOCKET, handle->write ? handle->sock : INVALID_SOCKET); @@ -1969,16 +1981,25 @@ void uv_ares_process(uv_ares_action_t* handle, uv_req_t* req) { /* called via uv_poll when ares is finished with socket */ void uv_ares_task_cleanup(uv_ares_task_t* handle, uv_req_t* req) { - /* check for event complete without waiting */ + /* check for event complete without waiting */ unsigned int signaled = WaitForSingleObject(handle->h_close_event, 0); if (signaled != WAIT_TIMEOUT) { + uv_ares_channel_t* uv_ares_data_ptr = (uv_ares_channel_t*)handle->data; uv_refs_--; /* close event handle and free uv handle memory */ CloseHandle(handle->h_close_event); free(handle); + + /* decrement active count. if it becomes 0 stop polling */ + if (uv_ares_data_ptr->activesockets > 0) { + uv_ares_data_ptr->activesockets--; + if (uv_ares_data_ptr->activesockets == 0) { + uv_close((uv_handle_t*)&uv_ares_data_ptr->pollingtimer, NULL); + } + } } else { /* stil busy - repost and try again */ if (!PostQueuedCompletionStatus(uv_iocp_, @@ -1990,6 +2011,13 @@ void uv_ares_task_cleanup(uv_ares_task_t* handle, uv_req_t* req) { } } +/* periodically call ares to check for timeouts */ +void uv_ares_poll(uv_timer_t* handle, int status) { + if (uv_ares_data.channel != NULL && uv_ares_data.activesockets > 0) { + ares_process_fd(uv_ares_data.channel, ARES_SOCKET_BAD, ARES_SOCKET_BAD); + } +} + /* set ares SOCK_STATE callback to our handler */ int uv_ares_init_options(ares_channel *channelptr, diff --git a/deps/uv/uv-win.h b/deps/uv/uv-win.h index a6760fbc36..e6254fee09 100644 --- a/deps/uv/uv-win.h +++ b/deps/uv/uv-win.h @@ -52,10 +52,12 @@ typedef struct uv_buf_t { uv_err_t error; \ struct uv_req_s* next_req; -#define uv_tcp_connection_fields \ +#define UV_STREAM_PRIVATE_FIELDS \ uv_alloc_cb alloc_cb; \ uv_read_cb read_cb; \ struct uv_req_s read_req; \ + +#define uv_tcp_connection_fields \ unsigned int write_reqs_pending; \ uv_req_t* shutdown_req; @@ -107,7 +109,6 @@ typedef struct uv_buf_t { unsigned int flags; \ uv_err_t error; - #define UV_ARES_TASK_PRIVATE_FIELDS \ struct uv_req_s ares_req; \ SOCKET sock; \ diff --git a/deps/uv/uv.h b/deps/uv/uv.h index 6bf2358047..e7df5b6590 100644 --- a/deps/uv/uv.h +++ b/deps/uv/uv.h @@ -41,6 +41,7 @@ typedef intptr_t ssize_t; typedef struct uv_err_s uv_err_t; typedef struct uv_handle_s uv_handle_t; +typedef struct uv_stream_s uv_stream_t; typedef struct uv_tcp_s uv_tcp_t; typedef struct uv_timer_s uv_timer_t; typedef struct uv_prepare_s uv_prepare_t; @@ -66,12 +67,12 @@ typedef struct uv_getaddrinfo_s uv_getaddrinfo_t; * In the case of uv_read_cb the uv_buf_t returned should be freed by the * user. */ -typedef uv_buf_t (*uv_alloc_cb)(uv_tcp_t* tcp, size_t suggested_size); -typedef void (*uv_read_cb)(uv_tcp_t* tcp, ssize_t nread, uv_buf_t buf); +typedef uv_buf_t (*uv_alloc_cb)(uv_stream_t* tcp, size_t suggested_size); +typedef void (*uv_read_cb)(uv_stream_t* tcp, ssize_t nread, uv_buf_t buf); typedef void (*uv_write_cb)(uv_req_t* req, int status); typedef void (*uv_connect_cb)(uv_req_t* req, int status); typedef void (*uv_shutdown_cb)(uv_req_t* req, int status); -typedef void (*uv_connection_cb)(uv_tcp_t* server, int status); +typedef void (*uv_connection_cb)(uv_handle_t* server, int status); typedef void (*uv_close_cb)(uv_handle_t* handle); typedef void (*uv_timer_cb)(uv_timer_t* handle, int status); /* TODO: do these really need a status argument? */ @@ -177,6 +178,8 @@ struct uv_req_s { */ void uv_req_init(uv_req_t* req, uv_handle_t* handle, void* cb); +int uv_shutdown(uv_req_t* req); + #define UV_HANDLE_FIELDS \ /* read-only */ \ @@ -205,31 +208,21 @@ int uv_is_active(uv_handle_t* handle); int uv_close(uv_handle_t* handle, uv_close_cb close_cb); -/* - * A subclass of uv_handle_t representing a TCP stream or TCP server. In the - * future this will probably be split into two classes - one a stream and - * the other a server. - */ -struct uv_tcp_s { +#define UV_STREAM_FIELDS \ + /* number of bytes queued for writing */ \ + size_t write_queue_size; \ + /* private */ \ + UV_STREAM_PRIVATE_FIELDS \ + +/* The abstract base class for all streams. */ +struct uv_stream_s { UV_HANDLE_FIELDS - size_t write_queue_size; /* number of bytes queued for writing */ - UV_TCP_PRIVATE_FIELDS + UV_STREAM_FIELDS }; -int uv_tcp_init(uv_tcp_t* handle); - -int uv_bind(uv_tcp_t* handle, struct sockaddr_in); -int uv_bind6(uv_tcp_t* handle, struct sockaddr_in6); - -int uv_connect(uv_req_t* req, struct sockaddr_in); - -int uv_shutdown(uv_req_t* req); - -int uv_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb); - -/* This call is used in conjunction with uv_listen() to accept incoming TCP +/* This call is used in conjunction with uv_listen() to accept incoming * connections. Call uv_accept after receiving a uv_connection_cb to accept - * the connection. Before calling uv_accept use uv_tcp_init() must be + * the connection. Before calling uv_accept use uv_*_init() must be * called on the client. Non-zero return value indicates an error. * * When the uv_connection_cb is called it is guaranteed that uv_accept will @@ -237,7 +230,7 @@ int uv_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb); * once, it may fail. It is suggested to only call uv_accept once per * uv_connection_cb call. */ -int uv_accept(uv_tcp_t* server, uv_tcp_t* client); +int uv_accept(uv_handle_t* server, uv_stream_t* client); /* Read data from an incoming stream. The callback will be made several * several times until there is no more data to read or uv_read_stop is @@ -248,9 +241,9 @@ int uv_accept(uv_tcp_t* server, uv_tcp_t* client); * eof; it happens when libuv requested a buffer through the alloc callback * but then decided that it didn't need that buffer. */ -int uv_read_start(uv_tcp_t*, uv_alloc_cb alloc_cb, uv_read_cb read_cb); +int uv_read_start(uv_stream_t*, uv_alloc_cb alloc_cb, uv_read_cb read_cb); -int uv_read_stop(uv_tcp_t*); +int uv_read_stop(uv_stream_t*); /* Write data to stream. Buffers are written in order. Example: * @@ -272,6 +265,27 @@ int uv_read_stop(uv_tcp_t*); int uv_write(uv_req_t* req, uv_buf_t bufs[], int bufcnt); +/* + * A subclass of uv_stream_t representing a TCP stream or TCP server. In the + * future this will probably be split into two classes - one a stream and + * the other a server. + */ +struct uv_tcp_s { + UV_HANDLE_FIELDS + UV_STREAM_FIELDS + UV_TCP_PRIVATE_FIELDS +}; + +int uv_tcp_init(uv_tcp_t* handle); + +int uv_tcp_bind(uv_tcp_t* handle, struct sockaddr_in); +int uv_tcp_bind6(uv_tcp_t* handle, struct sockaddr_in6); + +int uv_tcp_connect(uv_req_t* req, struct sockaddr_in); + +int uv_tcp_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb); + + /* * Subclass of uv_handle_t. libev wrapper. Every active prepare handle gets * its callback called exactly once per loop iteration, just before the diff --git a/src/tcp_wrap.cc b/src/tcp_wrap.cc index 668ae556a6..2258e53fb6 100644 --- a/src/tcp_wrap.cc +++ b/src/tcp_wrap.cc @@ -160,7 +160,7 @@ class TCPWrap { int port = args[1]->Int32Value(); struct sockaddr_in address = uv_ip4_addr(*ip_address, port); - int r = uv_bind(&wrap->handle_, address); + int r = uv_tcp_bind(&wrap->handle_, address); // Error starting the tcp. if (r) SetErrno(uv_last_error().code); @@ -175,7 +175,7 @@ class TCPWrap { int backlog = args[0]->Int32Value(); - int r = uv_listen(&wrap->handle_, backlog, OnConnection); + int r = uv_tcp_listen(&wrap->handle_, backlog, OnConnection); // Error starting the tcp. if (r) SetErrno(uv_last_error().code); @@ -183,12 +183,12 @@ class TCPWrap { return scope.Close(Integer::New(r)); } - static void OnConnection(uv_tcp_t* handle, int status) { + static void OnConnection(uv_handle_t* handle, int status) { HandleScope scope; TCPWrap* wrap = static_cast(handle->data); - assert(&wrap->handle_ == handle); + assert(&wrap->handle_ == (uv_tcp_t*)handle); if (status != 0) { // TODO Handle server error (call onerror?) @@ -205,7 +205,7 @@ class TCPWrap { TCPWrap* client_wrap = static_cast(client_obj->GetPointerFromInternalField(0)); - int r = uv_accept(handle, &client_wrap->handle_); + int r = uv_accept(handle, (uv_stream_t*)&client_wrap->handle_); // uv_accept should always work. assert(r == 0); @@ -220,7 +220,7 @@ class TCPWrap { UNWRAP - int r = uv_read_start(&wrap->handle_, OnAlloc, OnRead); + int r = uv_read_start((uv_stream_t*)&wrap->handle_, OnAlloc, OnRead); // Error starting the tcp. if (r) SetErrno(uv_last_error().code); @@ -233,7 +233,7 @@ class TCPWrap { UNWRAP - int r = uv_read_stop(&wrap->handle_); + int r = uv_read_stop((uv_stream_t*)&wrap->handle_); // Error starting the tcp. if (r) SetErrno(uv_last_error().code); @@ -250,11 +250,11 @@ class TCPWrap { return Buffer::Data(b); } - static uv_buf_t OnAlloc(uv_tcp_t* handle, size_t suggested_size) { + static uv_buf_t OnAlloc(uv_stream_t* handle, size_t suggested_size) { HandleScope scope; TCPWrap* wrap = static_cast(handle->data); - assert(&wrap->handle_ == handle); + assert(&wrap->handle_ == (uv_tcp_t*)handle); char* slab = NULL; @@ -286,12 +286,12 @@ class TCPWrap { wrap->slab_offset_ = slab_used; slab_used += buf.len; - handle_that_last_alloced = handle; + handle_that_last_alloced = (uv_tcp_t*)handle; return buf; } - static void OnRead(uv_tcp_t* handle, ssize_t nread, uv_buf_t buf) { + static void OnRead(uv_stream_t* handle, ssize_t nread, uv_buf_t buf) { HandleScope scope; TCPWrap* wrap = static_cast(handle->data); @@ -302,7 +302,7 @@ class TCPWrap { if (nread < 0) { // EOF or Error - if (handle_that_last_alloced == handle) { + if (handle_that_last_alloced == (uv_tcp_t*)handle) { slab_used -= buf.len; } @@ -313,7 +313,7 @@ class TCPWrap { assert(nread <= buf.len); - if (handle_that_last_alloced == handle) { + if (handle_that_last_alloced == (uv_tcp_t*)handle) { slab_used -= (buf.len - nread); } @@ -451,7 +451,7 @@ class TCPWrap { ReqWrap* req_wrap = new ReqWrap((uv_handle_t*) &wrap->handle_, (void*)AfterConnect); - int r = uv_connect(&req_wrap->req_, address); + int r = uv_tcp_connect(&req_wrap->req_, address); if (r) { SetErrno(uv_last_error().code); diff --git a/wscript b/wscript index 7fd6315f95..e85ac1524f 100644 --- a/wscript +++ b/wscript @@ -358,8 +358,6 @@ def configure(conf): if not conf.check(lib='kstat', uselib_store="KSTAT"): conf.fatal("Cannot find kstat library") - conf.sub_config('deps/libeio') - if conf.env['USE_SHARED_V8']: v8_includes = []; if o.shared_v8_includes: v8_includes.append(o.shared_v8_includes); @@ -418,8 +416,6 @@ def configure(conf): conf.env.append_value('CXXFLAGS', flags) conf.env.append_value('LINKFLAGS', flags) - # Needed for getaddrinfo in libeio - conf.env.append_value("CPPFLAGS", "-DX_STACKSIZE=%d" % (1024*64)) # LFS conf.env.append_value('CPPFLAGS', '-D_LARGEFILE_SOURCE') conf.env.append_value('CPPFLAGS', '-D_FILE_OFFSET_BITS=64') @@ -641,8 +637,6 @@ def build(bld): print "Parallel Jobs: " + str(Options.options.jobs) print "Product type: " + product_type - bld.add_subdirs('deps/libeio') - build_uv(bld) if not bld.env['USE_SHARED_V8']: build_v8(bld) @@ -804,7 +798,7 @@ def build(bld): node.name = "node" node.target = "node" node.uselib = 'RT OPENSSL CARES EXECINFO DL KVM SOCKET NSL KSTAT UTIL OPROFILE' - node.add_objects = 'eio http_parser' + node.add_objects = 'http_parser' if product_type_is_lib: node.install_path = '${LIBDIR}' else: @@ -848,10 +842,10 @@ def build(bld): node.includes = """ src/ - deps/libeio deps/http_parser deps/uv deps/uv/ev + deps/uv/eio """ if not bld.env["USE_SHARED_V8"]: node.includes += ' deps/v8/include '