|
|
|
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
|
|
|
|
*
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
* of this software and associated documentation files (the "Software"), to
|
|
|
|
* deal in the Software without restriction, including without limitation the
|
|
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
|
|
* sell copies of the Software, and to permit persons to whom the Software is
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
*
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
|
|
* IN THE SOFTWARE.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* See http://nikhilm.github.com/uvbook/ for an introduction. */
|
|
|
|
|
|
|
|
#ifndef UV_H
|
|
|
|
#define UV_H
|
|
|
|
#ifdef __cplusplus
|
|
|
|
extern "C" {
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef _WIN32
|
|
|
|
/* Windows - set up dll import/export decorators. */
|
|
|
|
# if defined(BUILDING_UV_SHARED)
|
|
|
|
/* Building shared library. */
|
|
|
|
# define UV_EXTERN __declspec(dllexport)
|
|
|
|
# elif defined(USING_UV_SHARED)
|
|
|
|
/* Using shared library. */
|
|
|
|
# define UV_EXTERN __declspec(dllimport)
|
|
|
|
# else
|
|
|
|
/* Building static library. */
|
|
|
|
# define UV_EXTERN /* nothing */
|
|
|
|
# endif
|
|
|
|
#elif __GNUC__ >= 4
|
|
|
|
# define UV_EXTERN __attribute__((visibility("default")))
|
|
|
|
#else
|
|
|
|
# define UV_EXTERN /* nothing */
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
#define UV_VERSION_MAJOR 0
|
|
|
|
#define UV_VERSION_MINOR 10
|
|
|
|
|
|
|
|
|
|
|
|
#if defined(_MSC_VER) && _MSC_VER < 1600
|
|
|
|
# include "uv-private/stdint-msvc2008.h"
|
|
|
|
#else
|
|
|
|
# include <stdint.h>
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include <sys/types.h> /* size_t */
|
|
|
|
|
|
|
|
#if defined(__SVR4) && !defined(__unix__)
|
|
|
|
# define __unix__
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(__unix__) || defined(__POSIX__) || \
|
|
|
|
defined(__APPLE__) || defined(_AIX)
|
|
|
|
# include "uv-private/uv-unix.h"
|
|
|
|
#else
|
|
|
|
# include "uv-private/uv-win.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Expand this list if necessary. */
|
|
|
|
#define UV_ERRNO_MAP(XX) \
|
|
|
|
XX( -1, UNKNOWN, "unknown error") \
|
|
|
|
XX( 0, OK, "success") \
|
|
|
|
XX( 1, EOF, "end of file") \
|
|
|
|
XX( 2, EADDRINFO, "getaddrinfo error") \
|
|
|
|
XX( 3, EACCES, "permission denied") \
|
|
|
|
XX( 4, EAGAIN, "resource temporarily unavailable") \
|
|
|
|
XX( 5, EADDRINUSE, "address already in use") \
|
|
|
|
XX( 6, EADDRNOTAVAIL, "address not available") \
|
|
|
|
XX( 7, EAFNOSUPPORT, "address family not supported") \
|
|
|
|
XX( 8, EALREADY, "connection already in progress") \
|
|
|
|
XX( 9, EBADF, "bad file descriptor") \
|
|
|
|
XX( 10, EBUSY, "resource busy or locked") \
|
|
|
|
XX( 11, ECONNABORTED, "software caused connection abort") \
|
|
|
|
XX( 12, ECONNREFUSED, "connection refused") \
|
|
|
|
XX( 13, ECONNRESET, "connection reset by peer") \
|
|
|
|
XX( 14, EDESTADDRREQ, "destination address required") \
|
|
|
|
XX( 15, EFAULT, "bad address in system call argument") \
|
|
|
|
XX( 16, EHOSTUNREACH, "host is unreachable") \
|
|
|
|
XX( 17, EINTR, "interrupted system call") \
|
|
|
|
XX( 18, EINVAL, "invalid argument") \
|
|
|
|
XX( 19, EISCONN, "socket is already connected") \
|
|
|
|
XX( 20, EMFILE, "too many open files") \
|
|
|
|
XX( 21, EMSGSIZE, "message too long") \
|
|
|
|
XX( 22, ENETDOWN, "network is down") \
|
|
|
|
XX( 23, ENETUNREACH, "network is unreachable") \
|
|
|
|
XX( 24, ENFILE, "file table overflow") \
|
|
|
|
XX( 25, ENOBUFS, "no buffer space available") \
|
|
|
|
XX( 26, ENOMEM, "not enough memory") \
|
|
|
|
XX( 27, ENOTDIR, "not a directory") \
|
|
|
|
XX( 28, EISDIR, "illegal operation on a directory") \
|
|
|
|
XX( 29, ENONET, "machine is not on the network") \
|
|
|
|
XX( 31, ENOTCONN, "socket is not connected") \
|
|
|
|
XX( 32, ENOTSOCK, "socket operation on non-socket") \
|
|
|
|
XX( 33, ENOTSUP, "operation not supported on socket") \
|
|
|
|
XX( 34, ENOENT, "no such file or directory") \
|
|
|
|
XX( 35, ENOSYS, "function not implemented") \
|
|
|
|
XX( 36, EPIPE, "broken pipe") \
|
|
|
|
XX( 37, EPROTO, "protocol error") \
|
|
|
|
XX( 38, EPROTONOSUPPORT, "protocol not supported") \
|
|
|
|
XX( 39, EPROTOTYPE, "protocol wrong type for socket") \
|
|
|
|
XX( 40, ETIMEDOUT, "connection timed out") \
|
|
|
|
XX( 41, ECHARSET, "invalid Unicode character") \
|
|
|
|
XX( 42, EAIFAMNOSUPPORT, "address family for hostname not supported") \
|
|
|
|
XX( 44, EAISERVICE, "servname not supported for ai_socktype") \
|
|
|
|
XX( 45, EAISOCKTYPE, "ai_socktype not supported") \
|
|
|
|
XX( 46, ESHUTDOWN, "cannot send after transport endpoint shutdown") \
|
|
|
|
XX( 47, EEXIST, "file already exists") \
|
|
|
|
XX( 48, ESRCH, "no such process") \
|
|
|
|
XX( 49, ENAMETOOLONG, "name too long") \
|
|
|
|
XX( 50, EPERM, "operation not permitted") \
|
|
|
|
XX( 51, ELOOP, "too many symbolic links encountered") \
|
|
|
|
XX( 52, EXDEV, "cross-device link not permitted") \
|
|
|
|
XX( 53, ENOTEMPTY, "directory not empty") \
|
|
|
|
XX( 54, ENOSPC, "no space left on device") \
|
|
|
|
XX( 55, EIO, "i/o error") \
|
|
|
|
XX( 56, EROFS, "read-only file system") \
|
|
|
|
XX( 57, ENODEV, "no such device") \
|
|
|
|
XX( 58, ESPIPE, "invalid seek") \
|
|
|
|
XX( 59, ECANCELED, "operation canceled") \
|
|
|
|
|
|
|
|
|
|
|
|
#define UV_ERRNO_GEN(val, name, s) UV_##name = val,
|
|
|
|
typedef enum {
|
|
|
|
UV_ERRNO_MAP(UV_ERRNO_GEN)
|
|
|
|
UV_MAX_ERRORS
|
|
|
|
} uv_err_code;
|
|
|
|
#undef UV_ERRNO_GEN
|
|
|
|
|
|
|
|
#define UV_HANDLE_TYPE_MAP(XX) \
|
|
|
|
XX(ASYNC, async) \
|
|
|
|
XX(CHECK, check) \
|
|
|
|
XX(FS_EVENT, fs_event) \
|
|
|
|
XX(FS_POLL, fs_poll) \
|
|
|
|
XX(HANDLE, handle) \
|
|
|
|
XX(IDLE, idle) \
|
|
|
|
XX(NAMED_PIPE, pipe) \
|
|
|
|
XX(POLL, poll) \
|
|
|
|
XX(PREPARE, prepare) \
|
|
|
|
XX(PROCESS, process) \
|
|
|
|
XX(STREAM, stream) \
|
|
|
|
XX(TCP, tcp) \
|
|
|
|
XX(TIMER, timer) \
|
|
|
|
XX(TTY, tty) \
|
|
|
|
XX(UDP, udp) \
|
|
|
|
XX(SIGNAL, signal) \
|
|
|
|
|
|
|
|
#define UV_REQ_TYPE_MAP(XX) \
|
|
|
|
XX(REQ, req) \
|
|
|
|
XX(CONNECT, connect) \
|
|
|
|
XX(WRITE, write) \
|
|
|
|
XX(SHUTDOWN, shutdown) \
|
|
|
|
XX(UDP_SEND, udp_send) \
|
|
|
|
XX(FS, fs) \
|
|
|
|
XX(WORK, work) \
|
|
|
|
XX(GETADDRINFO, getaddrinfo) \
|
|
|
|
|
|
|
|
typedef enum {
|
|
|
|
UV_UNKNOWN_HANDLE = 0,
|
|
|
|
#define XX(uc, lc) UV_##uc,
|
|
|
|
UV_HANDLE_TYPE_MAP(XX)
|
|
|
|
#undef XX
|
|
|
|
UV_FILE,
|
|
|
|
UV_HANDLE_TYPE_MAX
|
|
|
|
} uv_handle_type;
|
|
|
|
|
|
|
|
typedef enum {
|
|
|
|
UV_UNKNOWN_REQ = 0,
|
|
|
|
#define XX(uc, lc) UV_##uc,
|
|
|
|
UV_REQ_TYPE_MAP(XX)
|
|
|
|
#undef XX
|
|
|
|
UV_REQ_TYPE_PRIVATE
|
|
|
|
UV_REQ_TYPE_MAX
|
|
|
|
} uv_req_type;
|
|
|
|
|
|
|
|
|
|
|
|
/* Handle types. */
|
|
|
|
typedef struct uv_loop_s uv_loop_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_udp_s uv_udp_t;
|
|
|
|
typedef struct uv_pipe_s uv_pipe_t;
|
|
|
|
typedef struct uv_tty_s uv_tty_t;
|
|
|
|
typedef struct uv_poll_s uv_poll_t;
|
|
|
|
typedef struct uv_timer_s uv_timer_t;
|
|
|
|
typedef struct uv_prepare_s uv_prepare_t;
|
|
|
|
typedef struct uv_check_s uv_check_t;
|
|
|
|
typedef struct uv_idle_s uv_idle_t;
|
|
|
|
typedef struct uv_async_s uv_async_t;
|
|
|
|
typedef struct uv_process_s uv_process_t;
|
|
|
|
typedef struct uv_fs_event_s uv_fs_event_t;
|
|
|
|
typedef struct uv_fs_poll_s uv_fs_poll_t;
|
|
|
|
typedef struct uv_signal_s uv_signal_t;
|
|
|
|
|
|
|
|
/* Request types. */
|
|
|
|
typedef struct uv_req_s uv_req_t;
|
|
|
|
typedef struct uv_getaddrinfo_s uv_getaddrinfo_t;
|
|
|
|
typedef struct uv_shutdown_s uv_shutdown_t;
|
|
|
|
typedef struct uv_write_s uv_write_t;
|
|
|
|
typedef struct uv_connect_s uv_connect_t;
|
|
|
|
typedef struct uv_udp_send_s uv_udp_send_t;
|
|
|
|
typedef struct uv_fs_s uv_fs_t;
|
|
|
|
typedef struct uv_work_s uv_work_t;
|
|
|
|
|
|
|
|
/* None of the above. */
|
|
|
|
typedef struct uv_cpu_info_s uv_cpu_info_t;
|
|
|
|
typedef struct uv_interface_address_s uv_interface_address_t;
|
|
|
|
|
|
|
|
|
|
|
|
typedef enum {
|
|
|
|
UV_RUN_DEFAULT = 0,
|
|
|
|
UV_RUN_ONCE,
|
|
|
|
UV_RUN_NOWAIT
|
|
|
|
} uv_run_mode;
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns the libuv version packed into a single integer. 8 bits are used for
|
|
|
|
* each component, with the patch number stored in the 8 least significant
|
|
|
|
* bits. E.g. for libuv 1.2.3 this would return 0x010203.
|
|
|
|
*/
|
|
|
|
UV_EXTERN unsigned int uv_version(void);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns the libuv version number as a string. For non-release versions
|
|
|
|
* "-pre" is appended, so the version number could be "1.2.3-pre".
|
|
|
|
*/
|
|
|
|
UV_EXTERN const char* uv_version_string(void);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function must be called before any other functions in libuv.
|
|
|
|
*
|
|
|
|
* All functions besides uv_run() are non-blocking.
|
|
|
|
*
|
|
|
|
* All callbacks in libuv are made asynchronously. That is they are never
|
|
|
|
* made by the function that takes them as a parameter.
|
|
|
|
*/
|
|
|
|
UV_EXTERN uv_loop_t* uv_loop_new(void);
|
|
|
|
UV_EXTERN void uv_loop_delete(uv_loop_t*);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns the default loop.
|
|
|
|
*/
|
|
|
|
UV_EXTERN uv_loop_t* uv_default_loop(void);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function runs the event loop. It will act differently depending on the
|
|
|
|
* specified mode:
|
|
|
|
* - UV_RUN_DEFAULT: Runs the event loop until the reference count drops to
|
|
|
|
* zero. Always returns zero.
|
|
|
|
* - UV_RUN_ONCE: Poll for new events once. Note that this function blocks if
|
|
|
|
* there are no pending events. Returns zero when done (no active handles
|
|
|
|
* or requests left), or non-zero if more events are expected (meaning you
|
|
|
|
* should run the event loop again sometime in the future).
|
|
|
|
* - UV_RUN_NOWAIT: Poll for new events once but don't block if there are no
|
|
|
|
* pending events.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_run(uv_loop_t*, uv_run_mode mode);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function will stop the event loop by forcing uv_run to end
|
|
|
|
* as soon as possible, but not sooner than the next loop iteration.
|
|
|
|
* If this function was called before blocking for i/o, the loop won't
|
|
|
|
* block for i/o on this iteration.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_stop(uv_loop_t*);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Manually modify the event loop's reference count. Useful if the user wants
|
|
|
|
* to have a handle or timeout that doesn't keep the loop alive.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_ref(uv_handle_t*);
|
|
|
|
UV_EXTERN void uv_unref(uv_handle_t*);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update the event loop's concept of "now". Libuv caches the current time
|
|
|
|
* at the start of the event loop tick in order to reduce the number of
|
|
|
|
* time-related system calls.
|
|
|
|
*
|
|
|
|
* You won't normally need to call this function unless you have callbacks
|
|
|
|
* that block the event loop for longer periods of time, where "longer" is
|
|
|
|
* somewhat subjective but probably on the order of a millisecond or more.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_update_time(uv_loop_t*);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return the current timestamp in milliseconds. The timestamp is cached at
|
|
|
|
* the start of the event loop tick, see |uv_update_time()| for details and
|
|
|
|
* rationale.
|
|
|
|
*
|
|
|
|
* The timestamp increases monotonically from some arbitrary point in time.
|
|
|
|
* Don't make assumptions about the starting point, you will only get
|
|
|
|
* disappointed.
|
|
|
|
*
|
|
|
|
* Use uv_hrtime() if you need sub-milliseond granularity.
|
|
|
|
*/
|
|
|
|
UV_EXTERN uint64_t uv_now(uv_loop_t*);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get backend file descriptor. Only kqueue, epoll and event ports are
|
|
|
|
* supported.
|
|
|
|
*
|
|
|
|
* This can be used in conjunction with `uv_run(loop, UV_RUN_NOWAIT)` to
|
|
|
|
* poll in one thread and run the event loop's event callbacks in another.
|
|
|
|
*
|
|
|
|
* Useful for embedding libuv's event loop in another event loop.
|
|
|
|
* See test/test-embed.c for an example.
|
|
|
|
*
|
|
|
|
* Note that embedding a kqueue fd in another kqueue pollset doesn't work on
|
|
|
|
* all platforms. It's not an error to add the fd but it never generates
|
|
|
|
* events.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_backend_fd(const uv_loop_t*);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get the poll timeout. The return value is in milliseconds, or -1 for no
|
|
|
|
* timeout.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_backend_timeout(const uv_loop_t*);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Should return a buffer that libuv can use to read data into.
|
|
|
|
*
|
|
|
|
* `suggested_size` is a hint. Returning a buffer that is smaller is perfectly
|
|
|
|
* okay as long as `buf.len > 0`.
|
|
|
|
*/
|
|
|
|
typedef uv_buf_t (*uv_alloc_cb)(uv_handle_t* handle, size_t suggested_size);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* `nread` is > 0 if there is data available, 0 if libuv is done reading for now
|
|
|
|
* or -1 on error.
|
|
|
|
*
|
|
|
|
* Error details can be obtained by calling uv_last_error(). UV_EOF indicates
|
|
|
|
* that the stream has been closed.
|
|
|
|
*
|
|
|
|
* The callee is responsible for closing the stream when an error happens.
|
|
|
|
* Trying to read from the stream again is undefined.
|
|
|
|
*
|
|
|
|
* The callee is responsible for freeing the buffer, libuv does not reuse it.
|
|
|
|
*/
|
|
|
|
typedef void (*uv_read_cb)(uv_stream_t* stream, ssize_t nread, uv_buf_t buf);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Just like the uv_read_cb except that if the pending parameter is true
|
|
|
|
* then you can use uv_accept() to pull the new handle into the process.
|
|
|
|
* If no handle is pending then pending will be UV_UNKNOWN_HANDLE.
|
|
|
|
*/
|
|
|
|
typedef void (*uv_read2_cb)(uv_pipe_t* pipe, ssize_t nread, uv_buf_t buf,
|
|
|
|
uv_handle_type pending);
|
|
|
|
|
|
|
|
typedef void (*uv_write_cb)(uv_write_t* req, int status);
|
|
|
|
typedef void (*uv_connect_cb)(uv_connect_t* req, int status);
|
|
|
|
typedef void (*uv_shutdown_cb)(uv_shutdown_t* req, int status);
|
|
|
|
typedef void (*uv_connection_cb)(uv_stream_t* server, int status);
|
|
|
|
typedef void (*uv_close_cb)(uv_handle_t* handle);
|
|
|
|
typedef void (*uv_poll_cb)(uv_poll_t* handle, int status, int events);
|
|
|
|
typedef void (*uv_timer_cb)(uv_timer_t* handle, int status);
|
|
|
|
/* TODO: do these really need a status argument? */
|
|
|
|
typedef void (*uv_async_cb)(uv_async_t* handle, int status);
|
|
|
|
typedef void (*uv_prepare_cb)(uv_prepare_t* handle, int status);
|
|
|
|
typedef void (*uv_check_cb)(uv_check_t* handle, int status);
|
|
|
|
typedef void (*uv_idle_cb)(uv_idle_t* handle, int status);
|
|
|
|
typedef void (*uv_exit_cb)(uv_process_t*, int exit_status, int term_signal);
|
|
|
|
typedef void (*uv_walk_cb)(uv_handle_t* handle, void* arg);
|
|
|
|
typedef void (*uv_fs_cb)(uv_fs_t* req);
|
|
|
|
typedef void (*uv_work_cb)(uv_work_t* req);
|
|
|
|
typedef void (*uv_after_work_cb)(uv_work_t* req, int status);
|
|
|
|
typedef void (*uv_getaddrinfo_cb)(uv_getaddrinfo_t* req,
|
|
|
|
int status,
|
|
|
|
struct addrinfo* res);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This will be called repeatedly after the uv_fs_event_t is initialized.
|
|
|
|
* If uv_fs_event_t was initialized with a directory the filename parameter
|
|
|
|
* will be a relative path to a file contained in the directory.
|
|
|
|
* The events parameter is an ORed mask of enum uv_fs_event elements.
|
|
|
|
*/
|
|
|
|
typedef void (*uv_fs_event_cb)(uv_fs_event_t* handle, const char* filename,
|
|
|
|
int events, int status);
|
|
|
|
|
|
|
|
typedef void (*uv_fs_poll_cb)(uv_fs_poll_t* handle,
|
|
|
|
int status,
|
|
|
|
const uv_statbuf_t* prev,
|
|
|
|
const uv_statbuf_t* curr);
|
|
|
|
|
|
|
|
typedef void (*uv_signal_cb)(uv_signal_t* handle, int signum);
|
|
|
|
|
|
|
|
|
|
|
|
typedef enum {
|
|
|
|
UV_LEAVE_GROUP = 0,
|
|
|
|
UV_JOIN_GROUP
|
|
|
|
} uv_membership;
|
|
|
|
|
|
|
|
|
|
|
|
struct uv_err_s {
|
|
|
|
/* read-only */
|
|
|
|
uv_err_code code;
|
|
|
|
/* private */
|
|
|
|
int sys_errno_;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Most functions return boolean: 0 for success and -1 for failure.
|
|
|
|
* On error the user should then call uv_last_error() to determine
|
|
|
|
* the error code.
|
|
|
|
*/
|
|
|
|
UV_EXTERN uv_err_t uv_last_error(uv_loop_t*);
|
|
|
|
UV_EXTERN const char* uv_strerror(uv_err_t err);
|
|
|
|
UV_EXTERN const char* uv_err_name(uv_err_t err);
|
|
|
|
|
|
|
|
|
|
|
|
#define UV_REQ_FIELDS \
|
|
|
|
/* public */ \
|
|
|
|
void* data; \
|
|
|
|
/* read-only */ \
|
|
|
|
uv_req_type type; \
|
|
|
|
/* private */ \
|
|
|
|
ngx_queue_t active_queue; \
|
|
|
|
UV_REQ_PRIVATE_FIELDS \
|
|
|
|
|
|
|
|
/* Abstract base class of all requests. */
|
|
|
|
struct uv_req_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* Platform-specific request types */
|
|
|
|
UV_PRIVATE_REQ_TYPES
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_shutdown_t is a subclass of uv_req_t
|
|
|
|
*
|
|
|
|
* Shutdown the outgoing (write) side of a duplex stream. It waits for
|
|
|
|
* pending write requests to complete. The handle should refer to a
|
|
|
|
* initialized stream. req should be an uninitialized shutdown request
|
|
|
|
* struct. The cb is called after shutdown is complete.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_shutdown(uv_shutdown_t* req, uv_stream_t* handle,
|
|
|
|
uv_shutdown_cb cb);
|
|
|
|
|
|
|
|
struct uv_shutdown_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
uv_stream_t* handle;
|
|
|
|
uv_shutdown_cb cb;
|
|
|
|
UV_SHUTDOWN_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
#define UV_HANDLE_FIELDS \
|
|
|
|
/* public */ \
|
|
|
|
uv_close_cb close_cb; \
|
|
|
|
void* data; \
|
|
|
|
/* read-only */ \
|
|
|
|
uv_loop_t* loop; \
|
|
|
|
uv_handle_type type; \
|
|
|
|
/* private */ \
|
|
|
|
ngx_queue_t handle_queue; \
|
|
|
|
UV_HANDLE_PRIVATE_FIELDS \
|
|
|
|
|
|
|
|
/* The abstract base class of all handles. */
|
|
|
|
struct uv_handle_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns size of various handle types, useful for FFI
|
|
|
|
* bindings to allocate correct memory without copying struct
|
|
|
|
* definitions
|
|
|
|
*/
|
|
|
|
UV_EXTERN size_t uv_handle_size(uv_handle_type type);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns size of request types, useful for dynamic lookup with FFI
|
|
|
|
*/
|
|
|
|
UV_EXTERN size_t uv_req_size(uv_req_type type);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns 1 if the prepare/check/idle/timer handle has been started, 0
|
|
|
|
* otherwise. For other handle types this always returns 1.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_is_active(const uv_handle_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Walk the list of open handles.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_walk(uv_loop_t* loop, uv_walk_cb walk_cb, void* arg);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Request handle to be closed. close_cb will be called asynchronously after
|
|
|
|
* this call. This MUST be called on each handle before memory is released.
|
|
|
|
*
|
|
|
|
* Note that handles that wrap file descriptors are closed immediately but
|
|
|
|
* close_cb will still be deferred to the next iteration of the event loop.
|
|
|
|
* It gives you a chance to free up any resources associated with the handle.
|
|
|
|
*
|
|
|
|
* In-progress requests, like uv_connect_t or uv_write_t, are cancelled and
|
|
|
|
* have their callbacks called asynchronously with status=-1 and the error code
|
|
|
|
* set to UV_ECANCELED.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_close(uv_handle_t* handle, uv_close_cb close_cb);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Constructor for uv_buf_t.
|
|
|
|
* Due to platform differences the user cannot rely on the ordering of the
|
|
|
|
* base and len members of the uv_buf_t struct. The user is responsible for
|
|
|
|
* freeing base after the uv_buf_t is done. Return struct passed by value.
|
|
|
|
*/
|
|
|
|
UV_EXTERN uv_buf_t uv_buf_init(char* base, unsigned int len);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Utility function. Copies up to `size` characters from `src` to `dst`
|
|
|
|
* and ensures that `dst` is properly NUL terminated unless `size` is zero.
|
|
|
|
*/
|
|
|
|
UV_EXTERN size_t uv_strlcpy(char* dst, const char* src, size_t size);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Utility function. Appends `src` to `dst` and ensures that `dst` is
|
|
|
|
* properly NUL terminated unless `size` is zero or `dst` does not
|
|
|
|
* contain a NUL byte. `size` is the total length of `dst` so at most
|
|
|
|
* `size - strlen(dst) - 1` characters will be copied from `src`.
|
|
|
|
*/
|
|
|
|
UV_EXTERN size_t uv_strlcat(char* dst, const char* src, size_t size);
|
|
|
|
|
|
|
|
|
|
|
|
#define UV_STREAM_FIELDS \
|
|
|
|
/* number of bytes queued for writing */ \
|
|
|
|
size_t write_queue_size; \
|
|
|
|
uv_alloc_cb alloc_cb; \
|
|
|
|
uv_read_cb read_cb; \
|
|
|
|
uv_read2_cb read2_cb; \
|
|
|
|
/* private */ \
|
|
|
|
UV_STREAM_PRIVATE_FIELDS
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_stream_t is a subclass of uv_handle_t
|
|
|
|
*
|
|
|
|
* uv_stream is an abstract class.
|
|
|
|
*
|
|
|
|
* uv_stream_t is the parent class of uv_tcp_t, uv_pipe_t, uv_tty_t, and
|
|
|
|
* soon uv_file_t.
|
|
|
|
*/
|
|
|
|
struct uv_stream_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_STREAM_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_listen(uv_stream_t* stream, int backlog, uv_connection_cb cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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_*_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
|
|
|
|
* complete successfully the first time. If you attempt to use it more than
|
|
|
|
* once, it may fail. It is suggested to only call uv_accept once per
|
|
|
|
* uv_connection_cb call.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_accept(uv_stream_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
|
|
|
|
* called. When we've reached EOF nread will be set to -1 and the error is
|
|
|
|
* set to UV_EOF. When nread == -1 the buf parameter might not point to a
|
|
|
|
* valid buffer; in that case buf.len and buf.base are both set to 0.
|
|
|
|
* Note that nread might also be 0, which does *not* indicate an error or
|
|
|
|
* eof; it happens when libuv requested a buffer through the alloc callback
|
|
|
|
* but then decided that it didn't need that buffer.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_read_start(uv_stream_t*, uv_alloc_cb alloc_cb,
|
|
|
|
uv_read_cb read_cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_read_stop(uv_stream_t*);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Extended read methods for receiving handles over a pipe. The pipe must be
|
|
|
|
* initialized with ipc == 1.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_read2_start(uv_stream_t*, uv_alloc_cb alloc_cb,
|
|
|
|
uv_read2_cb read_cb);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Write data to stream. Buffers are written in order. Example:
|
|
|
|
*
|
|
|
|
* uv_buf_t a[] = {
|
|
|
|
* { .base = "1", .len = 1 },
|
|
|
|
* { .base = "2", .len = 1 }
|
|
|
|
* };
|
|
|
|
*
|
|
|
|
* uv_buf_t b[] = {
|
|
|
|
* { .base = "3", .len = 1 },
|
|
|
|
* { .base = "4", .len = 1 }
|
|
|
|
* };
|
|
|
|
*
|
|
|
|
* uv_write_t req1;
|
|
|
|
* uv_write_t req2;
|
|
|
|
*
|
|
|
|
* // writes "1234"
|
|
|
|
* uv_write(&req1, stream, a, 2);
|
|
|
|
* uv_write(&req2, stream, b, 2);
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_write(uv_write_t* req, uv_stream_t* handle,
|
|
|
|
uv_buf_t bufs[], int bufcnt, uv_write_cb cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Extended write function for sending handles over a pipe. The pipe must be
|
|
|
|
* initialized with ipc == 1.
|
|
|
|
* send_handle must be a TCP socket or pipe, which is a server or a connection
|
|
|
|
* (listening or connected state). Bound sockets or pipes will be assumed to
|
|
|
|
* be servers.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_write2(uv_write_t* req, uv_stream_t* handle, uv_buf_t bufs[],
|
|
|
|
int bufcnt, uv_stream_t* send_handle, uv_write_cb cb);
|
|
|
|
|
|
|
|
/* uv_write_t is a subclass of uv_req_t */
|
|
|
|
struct uv_write_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
uv_write_cb cb;
|
|
|
|
uv_stream_t* send_handle;
|
|
|
|
uv_stream_t* handle;
|
|
|
|
UV_WRITE_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Used to determine whether a stream is readable or writable.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_is_readable(const uv_stream_t* handle);
|
|
|
|
UV_EXTERN int uv_is_writable(const uv_stream_t* handle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Used to determine whether a stream is closing or closed.
|
|
|
|
*
|
|
|
|
* N.B. is only valid between the initialization of the handle
|
|
|
|
* and the arrival of the close callback, and cannot be used
|
|
|
|
* to validate the handle.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_is_closing(const uv_handle_t* handle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_tcp_t is a subclass of uv_stream_t
|
|
|
|
*
|
|
|
|
* Represents a TCP stream or TCP server.
|
|
|
|
*/
|
|
|
|
struct uv_tcp_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_STREAM_FIELDS
|
|
|
|
UV_TCP_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_tcp_init(uv_loop_t*, uv_tcp_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Opens an existing file descriptor or SOCKET as a tcp handle.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock);
|
|
|
|
|
|
|
|
/* Enable/disable Nagle's algorithm. */
|
|
|
|
UV_EXTERN int uv_tcp_nodelay(uv_tcp_t* handle, int enable);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Enable/disable TCP keep-alive.
|
|
|
|
*
|
|
|
|
* `delay` is the initial delay in seconds, ignored when `enable` is zero.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_tcp_keepalive(uv_tcp_t* handle,
|
|
|
|
int enable,
|
|
|
|
unsigned int delay);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Enable/disable simultaneous asynchronous accept requests that are
|
|
|
|
* queued by the operating system when listening for new tcp connections.
|
|
|
|
* This setting is used to tune a tcp server for the desired performance.
|
|
|
|
* Having simultaneous accepts can significantly improve the rate of
|
|
|
|
* accepting connections (which is why it is enabled by default) but
|
|
|
|
* may lead to uneven load distribution in multi-process setups.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_tcp_simultaneous_accepts(uv_tcp_t* handle, int enable);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_tcp_bind(uv_tcp_t* handle, struct sockaddr_in);
|
|
|
|
UV_EXTERN int uv_tcp_bind6(uv_tcp_t* handle, struct sockaddr_in6);
|
|
|
|
UV_EXTERN int uv_tcp_getsockname(uv_tcp_t* handle, struct sockaddr* name,
|
|
|
|
int* namelen);
|
|
|
|
UV_EXTERN int uv_tcp_getpeername(uv_tcp_t* handle, struct sockaddr* name,
|
|
|
|
int* namelen);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_tcp_connect, uv_tcp_connect6
|
|
|
|
* These functions establish IPv4 and IPv6 TCP connections. Provide an
|
|
|
|
* initialized TCP handle and an uninitialized uv_connect_t*. The callback
|
|
|
|
* will be made when the connection is established.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_tcp_connect(uv_connect_t* req, uv_tcp_t* handle,
|
|
|
|
struct sockaddr_in address, uv_connect_cb cb);
|
|
|
|
UV_EXTERN int uv_tcp_connect6(uv_connect_t* req, uv_tcp_t* handle,
|
|
|
|
struct sockaddr_in6 address, uv_connect_cb cb);
|
|
|
|
|
|
|
|
/* uv_connect_t is a subclass of uv_req_t */
|
|
|
|
struct uv_connect_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
uv_connect_cb cb;
|
|
|
|
uv_stream_t* handle;
|
|
|
|
UV_CONNECT_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* UDP support.
|
|
|
|
*/
|
|
|
|
|
|
|
|
enum uv_udp_flags {
|
|
|
|
/* Disables dual stack mode. Used with uv_udp_bind6(). */
|
|
|
|
UV_UDP_IPV6ONLY = 1,
|
|
|
|
/*
|
|
|
|
* Indicates message was truncated because read buffer was too small. The
|
|
|
|
* remainder was discarded by the OS. Used in uv_udp_recv_cb.
|
|
|
|
*/
|
|
|
|
UV_UDP_PARTIAL = 2
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Called after a uv_udp_send() or uv_udp_send6(). status 0 indicates
|
|
|
|
* success otherwise error.
|
|
|
|
*/
|
|
|
|
typedef void (*uv_udp_send_cb)(uv_udp_send_t* req, int status);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Callback that is invoked when a new UDP datagram is received.
|
|
|
|
*
|
|
|
|
* handle UDP handle.
|
|
|
|
* nread Number of bytes that have been received.
|
|
|
|
* 0 if there is no more data to read. You may
|
|
|
|
* discard or repurpose the read buffer.
|
|
|
|
* -1 if a transmission error was detected.
|
|
|
|
* buf uv_buf_t with the received data.
|
|
|
|
* addr struct sockaddr_in or struct sockaddr_in6.
|
|
|
|
* Valid for the duration of the callback only.
|
|
|
|
* flags One or more OR'ed UV_UDP_* constants.
|
|
|
|
* Right now only UV_UDP_PARTIAL is used.
|
|
|
|
*/
|
|
|
|
typedef void (*uv_udp_recv_cb)(uv_udp_t* handle, ssize_t nread, uv_buf_t buf,
|
|
|
|
struct sockaddr* addr, unsigned flags);
|
|
|
|
|
|
|
|
/* uv_udp_t is a subclass of uv_handle_t */
|
|
|
|
struct uv_udp_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_UDP_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
/* uv_udp_send_t is a subclass of uv_req_t */
|
|
|
|
struct uv_udp_send_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
uv_udp_t* handle;
|
|
|
|
uv_udp_send_cb cb;
|
|
|
|
UV_UDP_SEND_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize a new UDP handle. The actual socket is created lazily.
|
|
|
|
* Returns 0 on success.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_init(uv_loop_t*, uv_udp_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Opens an existing file descriptor or SOCKET as a udp handle.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_open(uv_udp_t* handle, uv_os_sock_t sock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Bind to a IPv4 address and port.
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with `uv_udp_init`.
|
|
|
|
* addr struct sockaddr_in with the address and port to bind to.
|
|
|
|
* flags Unused.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_bind(uv_udp_t* handle, struct sockaddr_in addr,
|
|
|
|
unsigned flags);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Bind to a IPv6 address and port.
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with `uv_udp_init`.
|
|
|
|
* addr struct sockaddr_in with the address and port to bind to.
|
|
|
|
* flags Should be 0 or UV_UDP_IPV6ONLY.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_bind6(uv_udp_t* handle, struct sockaddr_in6 addr,
|
|
|
|
unsigned flags);
|
|
|
|
UV_EXTERN int uv_udp_getsockname(uv_udp_t* handle, struct sockaddr* name,
|
|
|
|
int* namelen);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set membership for a multicast address
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with
|
|
|
|
* `uv_udp_init`.
|
|
|
|
* multicast_addr multicast address to set membership for
|
|
|
|
* interface_addr interface address
|
|
|
|
* membership Should be UV_JOIN_GROUP or UV_LEAVE_GROUP
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_set_membership(uv_udp_t* handle,
|
|
|
|
const char* multicast_addr, const char* interface_addr,
|
|
|
|
uv_membership membership);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set IP multicast loop flag. Makes multicast packets loop back to
|
|
|
|
* local sockets.
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with
|
|
|
|
* `uv_udp_init`.
|
|
|
|
* on 1 for on, 0 for off
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_set_multicast_loop(uv_udp_t* handle, int on);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set the multicast ttl
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with
|
|
|
|
* `uv_udp_init`.
|
|
|
|
* ttl 1 through 255
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_set_multicast_ttl(uv_udp_t* handle, int ttl);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set broadcast on or off
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with
|
|
|
|
* `uv_udp_init`.
|
|
|
|
* on 1 for on, 0 for off
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_set_broadcast(uv_udp_t* handle, int on);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set the time to live
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with
|
|
|
|
* `uv_udp_init`.
|
|
|
|
* ttl 1 through 255
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_set_ttl(uv_udp_t* handle, int ttl);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Send data. If the socket has not previously been bound with `uv_udp_bind`
|
|
|
|
* or `uv_udp_bind6`, it is bound to 0.0.0.0 (the "all interfaces" address)
|
|
|
|
* and a random port number.
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* req UDP request handle. Need not be initialized.
|
|
|
|
* handle UDP handle. Should have been initialized with `uv_udp_init`.
|
|
|
|
* bufs List of buffers to send.
|
|
|
|
* bufcnt Number of buffers in `bufs`.
|
|
|
|
* addr Address of the remote peer. See `uv_ip4_addr`.
|
|
|
|
* send_cb Callback to invoke when the data has been sent out.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_send(uv_udp_send_t* req, uv_udp_t* handle,
|
|
|
|
uv_buf_t bufs[], int bufcnt, struct sockaddr_in addr,
|
|
|
|
uv_udp_send_cb send_cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Send data. If the socket has not previously been bound with `uv_udp_bind6`,
|
|
|
|
* it is bound to ::0 (the "all interfaces" address) and a random port number.
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* req UDP request handle. Need not be initialized.
|
|
|
|
* handle UDP handle. Should have been initialized with `uv_udp_init`.
|
|
|
|
* bufs List of buffers to send.
|
|
|
|
* bufcnt Number of buffers in `bufs`.
|
|
|
|
* addr Address of the remote peer. See `uv_ip6_addr`.
|
|
|
|
* send_cb Callback to invoke when the data has been sent out.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_send6(uv_udp_send_t* req, uv_udp_t* handle,
|
|
|
|
uv_buf_t bufs[], int bufcnt, struct sockaddr_in6 addr,
|
|
|
|
uv_udp_send_cb send_cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Receive data. If the socket has not previously been bound with `uv_udp_bind`
|
|
|
|
* or `uv_udp_bind6`, it is bound to 0.0.0.0 (the "all interfaces" address)
|
|
|
|
* and a random port number.
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with `uv_udp_init`.
|
|
|
|
* alloc_cb Callback to invoke when temporary storage is needed.
|
|
|
|
* recv_cb Callback to invoke with received data.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_recv_start(uv_udp_t* handle, uv_alloc_cb alloc_cb,
|
|
|
|
uv_udp_recv_cb recv_cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Stop listening for incoming datagrams.
|
|
|
|
*
|
|
|
|
* Arguments:
|
|
|
|
* handle UDP handle. Should have been initialized with `uv_udp_init`.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_udp_recv_stop(uv_udp_t* handle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_tty_t is a subclass of uv_stream_t
|
|
|
|
*
|
|
|
|
* Representing a stream for the console.
|
|
|
|
*/
|
|
|
|
struct uv_tty_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_STREAM_FIELDS
|
|
|
|
UV_TTY_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize a new TTY stream with the given file descriptor. Usually the
|
|
|
|
* file descriptor will be
|
|
|
|
* 0 = stdin
|
|
|
|
* 1 = stdout
|
|
|
|
* 2 = stderr
|
|
|
|
* The last argument, readable, specifies if you plan on calling
|
|
|
|
* uv_read_start with this stream. stdin is readable, stdout is not.
|
|
|
|
*
|
|
|
|
* TTY streams which are not readable have blocking writes.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_tty_init(uv_loop_t*, uv_tty_t*, uv_file fd, int readable);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set mode. 0 for normal, 1 for raw.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_tty_set_mode(uv_tty_t*, int mode);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* To be called when the program exits. Resets TTY settings to default
|
|
|
|
* values for the next process to take over.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_tty_reset_mode(void);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Gets the current Window size. On success zero is returned.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_tty_get_winsize(uv_tty_t*, int* width, int* height);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Used to detect what type of stream should be used with a given file
|
|
|
|
* descriptor. Usually this will be used during initialization to guess the
|
|
|
|
* type of the stdio streams.
|
|
|
|
* For isatty() functionality use this function and test for UV_TTY.
|
|
|
|
*/
|
|
|
|
UV_EXTERN uv_handle_type uv_guess_handle(uv_file file);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_pipe_t is a subclass of uv_stream_t
|
|
|
|
*
|
|
|
|
* Representing a pipe stream or pipe server. On Windows this is a Named
|
|
|
|
* Pipe. On Unix this is a UNIX domain socket.
|
|
|
|
*/
|
|
|
|
struct uv_pipe_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_STREAM_FIELDS
|
|
|
|
int ipc; /* non-zero if this pipe is used for passing handles */
|
|
|
|
UV_PIPE_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize a pipe. The last argument is a boolean to indicate if
|
|
|
|
* this pipe will be used for handle passing between processes.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_pipe_init(uv_loop_t*, uv_pipe_t* handle, int ipc);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Opens an existing file descriptor or HANDLE as a pipe.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_pipe_open(uv_pipe_t*, uv_file file);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_pipe_bind(uv_pipe_t* handle, const char* name);
|
|
|
|
|
|
|
|
UV_EXTERN void uv_pipe_connect(uv_connect_t* req, uv_pipe_t* handle,
|
|
|
|
const char* name, uv_connect_cb cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This setting applies to Windows only.
|
|
|
|
* Set the number of pending pipe instance handles when the pipe server
|
|
|
|
* is waiting for connections.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_pipe_pending_instances(uv_pipe_t* handle, int count);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_poll_t is a subclass of uv_handle_t.
|
|
|
|
*
|
|
|
|
* The uv_poll watcher is used to watch file descriptors for readability and
|
|
|
|
* writability, similar to the purpose of poll(2).
|
|
|
|
*
|
|
|
|
* The purpose of uv_poll is to enable integrating external libraries that
|
|
|
|
* rely on the event loop to signal it about the socket status changes, like
|
|
|
|
* c-ares or libssh2. Using uv_poll_t for any other other purpose is not
|
|
|
|
* recommended; uv_tcp_t, uv_udp_t, etc. provide an implementation that is
|
|
|
|
* much faster and more scalable than what can be achieved with uv_poll_t,
|
|
|
|
* especially on Windows.
|
|
|
|
*
|
|
|
|
* It is possible that uv_poll occasionally signals that a file descriptor is
|
|
|
|
* readable or writable even when it isn't. The user should therefore always
|
|
|
|
* be prepared to handle EAGAIN or equivalent when it attempts to read from or
|
|
|
|
* write to the fd.
|
|
|
|
*
|
|
|
|
* It is not okay to have multiple active uv_poll watchers for the same socket.
|
|
|
|
* This can cause libuv to busyloop or otherwise malfunction.
|
|
|
|
*
|
|
|
|
* The user should not close a file descriptor while it is being polled by an
|
|
|
|
* active uv_poll watcher. This can cause the poll watcher to report an error,
|
|
|
|
* but it might also start polling another socket. However the fd can be safely
|
|
|
|
* closed immediately after a call to uv_poll_stop() or uv_close().
|
|
|
|
*
|
|
|
|
* On windows only sockets can be polled with uv_poll. On unix any file
|
|
|
|
* descriptor that would be accepted by poll(2) can be used with uv_poll.
|
|
|
|
*/
|
|
|
|
struct uv_poll_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
uv_poll_cb poll_cb;
|
|
|
|
UV_POLL_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
enum uv_poll_event {
|
|
|
|
UV_READABLE = 1,
|
|
|
|
UV_WRITABLE = 2
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Initialize the poll watcher using a file descriptor. */
|
|
|
|
UV_EXTERN int uv_poll_init(uv_loop_t* loop, uv_poll_t* handle, int fd);
|
|
|
|
|
|
|
|
/* Initialize the poll watcher using a socket descriptor. On unix this is */
|
|
|
|
/* identical to uv_poll_init. On windows it takes a SOCKET handle. */
|
|
|
|
UV_EXTERN int uv_poll_init_socket(uv_loop_t* loop, uv_poll_t* handle,
|
|
|
|
uv_os_sock_t socket);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Starts polling the file descriptor. `events` is a bitmask consisting made up
|
|
|
|
* of UV_READABLE and UV_WRITABLE. As soon as an event is detected the callback
|
|
|
|
* will be called with `status` set to 0, and the detected events set en the
|
|
|
|
* `events` field.
|
|
|
|
*
|
|
|
|
* If an error happens while polling status may be set to -1 and the error
|
|
|
|
* code can be retrieved with uv_last_error. The user should not close the
|
|
|
|
* socket while uv_poll is active. If the user does that anyway, the callback
|
|
|
|
* *may* be called reporting an error status, but this is not guaranteed.
|
|
|
|
*
|
|
|
|
* Calling uv_poll_start on an uv_poll watcher that is already active is fine.
|
|
|
|
* Doing so will update the events mask that is being watched for.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_poll_start(uv_poll_t* handle, int events, uv_poll_cb cb);
|
|
|
|
|
|
|
|
/* Stops polling the file descriptor. */
|
|
|
|
UV_EXTERN int uv_poll_stop(uv_poll_t* handle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_prepare_t is a subclass of uv_handle_t.
|
|
|
|
*
|
|
|
|
* Every active prepare handle gets its callback called exactly once per loop
|
|
|
|
* iteration, just before the system blocks to wait for completed i/o.
|
|
|
|
*/
|
|
|
|
struct uv_prepare_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_PREPARE_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_prepare_init(uv_loop_t*, uv_prepare_t* prepare);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_prepare_start(uv_prepare_t* prepare, uv_prepare_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_prepare_stop(uv_prepare_t* prepare);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_check_t is a subclass of uv_handle_t.
|
|
|
|
*
|
|
|
|
* Every active check handle gets its callback called exactly once per loop
|
|
|
|
* iteration, just after the system returns from blocking.
|
|
|
|
*/
|
|
|
|
struct uv_check_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_CHECK_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_check_init(uv_loop_t*, uv_check_t* check);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_check_start(uv_check_t* check, uv_check_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_check_stop(uv_check_t* check);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_idle_t is a subclass of uv_handle_t.
|
|
|
|
*
|
|
|
|
* Every active idle handle gets its callback called repeatedly until it is
|
|
|
|
* stopped. This happens after all other types of callbacks are processed.
|
|
|
|
* When there are multiple "idle" handles active, their callbacks are called
|
|
|
|
* in turn.
|
|
|
|
*/
|
|
|
|
struct uv_idle_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_IDLE_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_idle_init(uv_loop_t*, uv_idle_t* idle);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_idle_start(uv_idle_t* idle, uv_idle_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_idle_stop(uv_idle_t* idle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_async_t is a subclass of uv_handle_t.
|
|
|
|
*
|
|
|
|
* uv_async_send wakes up the event loop and calls the async handle's callback.
|
|
|
|
* There is no guarantee that every uv_async_send call leads to exactly one
|
|
|
|
* invocation of the callback; the only guarantee is that the callback function
|
|
|
|
* is called at least once after the call to async_send. Unlike all other
|
|
|
|
* libuv functions, uv_async_send can be called from another thread.
|
|
|
|
*/
|
|
|
|
struct uv_async_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_ASYNC_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_async_init(uv_loop_t*, uv_async_t* async,
|
|
|
|
uv_async_cb async_cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This can be called from other threads to wake up a libuv thread.
|
|
|
|
*
|
|
|
|
* libuv is single threaded at the moment.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_async_send(uv_async_t* async);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_timer_t is a subclass of uv_handle_t.
|
|
|
|
*
|
|
|
|
* Used to get woken up at a specified time in the future.
|
|
|
|
*/
|
|
|
|
struct uv_timer_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
UV_TIMER_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_timer_init(uv_loop_t*, uv_timer_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Start the timer. `timeout` and `repeat` are in milliseconds.
|
|
|
|
*
|
|
|
|
* If timeout is zero, the callback fires on the next tick of the event loop.
|
|
|
|
*
|
|
|
|
* If repeat is non-zero, the callback fires first after timeout milliseconds
|
|
|
|
* and then repeatedly after repeat milliseconds.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_timer_start(uv_timer_t* handle,
|
|
|
|
uv_timer_cb cb,
|
|
|
|
uint64_t timeout,
|
|
|
|
uint64_t repeat);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_timer_stop(uv_timer_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Stop the timer, and if it is repeating restart it using the repeat value
|
|
|
|
* as the timeout. If the timer has never been started before it returns -1 and
|
|
|
|
* sets the error to UV_EINVAL.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_timer_again(uv_timer_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set the repeat value in milliseconds. Note that if the repeat value is set
|
|
|
|
* from a timer callback it does not immediately take effect. If the timer was
|
|
|
|
* non-repeating before, it will have been stopped. If it was repeating, then
|
|
|
|
* the old repeat value will have been used to schedule the next timeout.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_timer_set_repeat(uv_timer_t* handle, uint64_t repeat);
|
|
|
|
|
|
|
|
UV_EXTERN uint64_t uv_timer_get_repeat(const uv_timer_t* handle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_getaddrinfo_t is a subclass of uv_req_t
|
|
|
|
*
|
|
|
|
* Request object for uv_getaddrinfo.
|
|
|
|
*/
|
|
|
|
struct uv_getaddrinfo_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
/* read-only */
|
|
|
|
uv_loop_t* loop;
|
|
|
|
UV_GETADDRINFO_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Asynchronous getaddrinfo(3).
|
|
|
|
*
|
|
|
|
* Either node or service may be NULL but not both.
|
|
|
|
*
|
|
|
|
* hints is a pointer to a struct addrinfo with additional address type
|
|
|
|
* constraints, or NULL. Consult `man -s 3 getaddrinfo` for details.
|
|
|
|
*
|
|
|
|
* Returns 0 on success, -1 on error. Call uv_last_error() to get the error.
|
|
|
|
*
|
|
|
|
* If successful, your callback gets called sometime in the future with the
|
|
|
|
* lookup result, which is either:
|
|
|
|
*
|
|
|
|
* a) status == 0, the res argument points to a valid struct addrinfo, or
|
|
|
|
* b) status == -1, the res argument is NULL.
|
|
|
|
*
|
|
|
|
* On NXDOMAIN, the status code is -1 and uv_last_error() returns UV_ENOENT.
|
|
|
|
*
|
|
|
|
* Call uv_freeaddrinfo() to free the addrinfo structure.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_getaddrinfo(uv_loop_t* loop,
|
|
|
|
uv_getaddrinfo_t* req,
|
|
|
|
uv_getaddrinfo_cb getaddrinfo_cb,
|
|
|
|
const char* node,
|
|
|
|
const char* service,
|
|
|
|
const struct addrinfo* hints);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free the struct addrinfo. Passing NULL is allowed and is a no-op.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_freeaddrinfo(struct addrinfo* ai);
|
|
|
|
|
|
|
|
/* uv_spawn() options */
|
|
|
|
typedef enum {
|
|
|
|
UV_IGNORE = 0x00,
|
|
|
|
UV_CREATE_PIPE = 0x01,
|
|
|
|
UV_INHERIT_FD = 0x02,
|
|
|
|
UV_INHERIT_STREAM = 0x04,
|
|
|
|
|
|
|
|
/* When UV_CREATE_PIPE is specified, UV_READABLE_PIPE and UV_WRITABLE_PIPE
|
|
|
|
* determine the direction of flow, from the child process' perspective. Both
|
|
|
|
* flags may be specified to create a duplex data stream.
|
|
|
|
*/
|
|
|
|
UV_READABLE_PIPE = 0x10,
|
|
|
|
UV_WRITABLE_PIPE = 0x20
|
|
|
|
} uv_stdio_flags;
|
|
|
|
|
|
|
|
typedef struct uv_stdio_container_s {
|
|
|
|
uv_stdio_flags flags;
|
|
|
|
|
|
|
|
union {
|
|
|
|
uv_stream_t* stream;
|
|
|
|
int fd;
|
|
|
|
} data;
|
|
|
|
} uv_stdio_container_t;
|
|
|
|
|
|
|
|
typedef struct uv_process_options_s {
|
|
|
|
uv_exit_cb exit_cb; /* Called after the process exits. */
|
|
|
|
const char* file; /* Path to program to execute. */
|
|
|
|
/*
|
|
|
|
* Command line arguments. args[0] should be the path to the program. On
|
|
|
|
* Windows this uses CreateProcess which concatenates the arguments into a
|
|
|
|
* string this can cause some strange errors. See the note at
|
|
|
|
* windows_verbatim_arguments.
|
|
|
|
*/
|
|
|
|
char** args;
|
|
|
|
/*
|
|
|
|
* This will be set as the environ variable in the subprocess. If this is
|
|
|
|
* NULL then the parents environ will be used.
|
|
|
|
*/
|
|
|
|
char** env;
|
|
|
|
/*
|
|
|
|
* If non-null this represents a directory the subprocess should execute
|
|
|
|
* in. Stands for current working directory.
|
|
|
|
*/
|
|
|
|
char* cwd;
|
|
|
|
/*
|
|
|
|
* Various flags that control how uv_spawn() behaves. See the definition of
|
|
|
|
* `enum uv_process_flags` below.
|
|
|
|
*/
|
|
|
|
unsigned int flags;
|
|
|
|
/*
|
|
|
|
* The `stdio` field points to an array of uv_stdio_container_t structs that
|
|
|
|
* describe the file descriptors that will be made available to the child
|
|
|
|
* process. The convention is that stdio[0] points to stdin, fd 1 is used for
|
|
|
|
* stdout, and fd 2 is stderr.
|
|
|
|
*
|
|
|
|
* Note that on windows file descriptors greater than 2 are available to the
|
|
|
|
* child process only if the child processes uses the MSVCRT runtime.
|
|
|
|
*/
|
|
|
|
int stdio_count;
|
|
|
|
uv_stdio_container_t* stdio;
|
|
|
|
/*
|
|
|
|
* Libuv can change the child process' user/group id. This happens only when
|
|
|
|
* the appropriate bits are set in the flags fields. This is not supported on
|
|
|
|
* windows; uv_spawn() will fail and set the error to UV_ENOTSUP.
|
|
|
|
*/
|
|
|
|
uv_uid_t uid;
|
|
|
|
uv_gid_t gid;
|
|
|
|
} uv_process_options_t;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* These are the flags that can be used for the uv_process_options.flags field.
|
|
|
|
*/
|
|
|
|
enum uv_process_flags {
|
|
|
|
/*
|
|
|
|
* Set the child process' user id. The user id is supplied in the `uid` field
|
|
|
|
* of the options struct. This does not work on windows; setting this flag
|
|
|
|
* will cause uv_spawn() to fail.
|
|
|
|
*/
|
|
|
|
UV_PROCESS_SETUID = (1 << 0),
|
|
|
|
/*
|
|
|
|
* Set the child process' group id. The user id is supplied in the `gid`
|
|
|
|
* field of the options struct. This does not work on windows; setting this
|
|
|
|
* flag will cause uv_spawn() to fail.
|
|
|
|
*/
|
|
|
|
UV_PROCESS_SETGID = (1 << 1),
|
|
|
|
/*
|
|
|
|
* Do not wrap any arguments in quotes, or perform any other escaping, when
|
|
|
|
* converting the argument list into a command line string. This option is
|
|
|
|
* only meaningful on Windows systems. On unix it is silently ignored.
|
|
|
|
*/
|
|
|
|
UV_PROCESS_WINDOWS_VERBATIM_ARGUMENTS = (1 << 2),
|
|
|
|
/*
|
|
|
|
* Spawn the child process in a detached state - this will make it a process
|
|
|
|
* group leader, and will effectively enable the child to keep running after
|
|
|
|
* the parent exits. Note that the child process will still keep the
|
|
|
|
* parent's event loop alive unless the parent process calls uv_unref() on
|
|
|
|
* the child's process handle.
|
|
|
|
*/
|
|
|
|
UV_PROCESS_DETACHED = (1 << 3),
|
|
|
|
/*
|
|
|
|
* Hide the subprocess console window that would normally be created. This
|
|
|
|
* option is only meaningful on Windows systems. On unix it is silently
|
|
|
|
* ignored.
|
|
|
|
*/
|
|
|
|
UV_PROCESS_WINDOWS_HIDE = (1 << 4)
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_process_t is a subclass of uv_handle_t
|
|
|
|
*/
|
|
|
|
struct uv_process_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
uv_exit_cb exit_cb;
|
|
|
|
int pid;
|
|
|
|
UV_PROCESS_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Initializes uv_process_t and starts the process. */
|
|
|
|
UV_EXTERN int uv_spawn(uv_loop_t*, uv_process_t*,
|
|
|
|
uv_process_options_t options);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Kills the process with the specified signal. The user must still
|
|
|
|
* call uv_close on the process.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_process_kill(uv_process_t*, int signum);
|
|
|
|
|
|
|
|
|
|
|
|
/* Kills the process with the specified signal. */
|
|
|
|
UV_EXTERN uv_err_t uv_kill(int pid, int signum);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_work_t is a subclass of uv_req_t
|
|
|
|
*/
|
|
|
|
struct uv_work_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
uv_loop_t* loop;
|
|
|
|
uv_work_cb work_cb;
|
|
|
|
uv_after_work_cb after_work_cb;
|
|
|
|
UV_WORK_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Queues a work request to execute asynchronously on the thread pool. */
|
|
|
|
UV_EXTERN int uv_queue_work(uv_loop_t* loop, uv_work_t* req,
|
|
|
|
uv_work_cb work_cb, uv_after_work_cb after_work_cb);
|
|
|
|
|
|
|
|
/* Cancel a pending request. Fails if the request is executing or has finished
|
|
|
|
* executing.
|
|
|
|
*
|
|
|
|
* Returns 0 on success, -1 on error. The loop error code is not touched.
|
|
|
|
*
|
|
|
|
* Only cancellation of uv_fs_t, uv_getaddrinfo_t and uv_work_t requests is
|
|
|
|
* currently supported.
|
|
|
|
*
|
|
|
|
* Cancelled requests have their callbacks invoked some time in the future.
|
|
|
|
* It's _not_ safe to free the memory associated with the request until your
|
|
|
|
* callback is called.
|
|
|
|
*
|
|
|
|
* Here is how cancellation is reported to your callback:
|
|
|
|
*
|
|
|
|
* - A uv_fs_t request has its req->errorno field set to UV_ECANCELED.
|
|
|
|
*
|
|
|
|
* - A uv_work_t or uv_getaddrinfo_t request has its callback invoked with
|
|
|
|
* status == -1 and uv_last_error(loop).code == UV_ECANCELED.
|
|
|
|
*
|
|
|
|
* This function is currently only implemented on UNIX platforms. On Windows,
|
|
|
|
* it always returns -1.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_cancel(uv_req_t* req);
|
|
|
|
|
|
|
|
|
|
|
|
struct uv_cpu_info_s {
|
|
|
|
char* model;
|
|
|
|
int speed;
|
|
|
|
struct uv_cpu_times_s {
|
|
|
|
uint64_t user;
|
|
|
|
uint64_t nice;
|
|
|
|
uint64_t sys;
|
|
|
|
uint64_t idle;
|
|
|
|
uint64_t irq;
|
|
|
|
} cpu_times;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct uv_interface_address_s {
|
|
|
|
char* name;
|
|
|
|
int is_internal;
|
|
|
|
union {
|
|
|
|
struct sockaddr_in address4;
|
|
|
|
struct sockaddr_in6 address6;
|
|
|
|
} address;
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN char** uv_setup_args(int argc, char** argv);
|
|
|
|
UV_EXTERN uv_err_t uv_get_process_title(char* buffer, size_t size);
|
|
|
|
UV_EXTERN uv_err_t uv_set_process_title(const char* title);
|
|
|
|
UV_EXTERN uv_err_t uv_resident_set_memory(size_t* rss);
|
|
|
|
UV_EXTERN uv_err_t uv_uptime(double* uptime);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This allocates cpu_infos array, and sets count. The array
|
|
|
|
* is freed using uv_free_cpu_info().
|
|
|
|
*/
|
|
|
|
UV_EXTERN uv_err_t uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count);
|
|
|
|
UV_EXTERN void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This allocates addresses array, and sets count. The array
|
|
|
|
* is freed using uv_free_interface_addresses().
|
|
|
|
*/
|
|
|
|
UV_EXTERN uv_err_t uv_interface_addresses(uv_interface_address_t** addresses,
|
|
|
|
int* count);
|
|
|
|
UV_EXTERN void uv_free_interface_addresses(uv_interface_address_t* addresses,
|
|
|
|
int count);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* File System Methods.
|
|
|
|
*
|
|
|
|
* The uv_fs_* functions execute a blocking system call asynchronously (in a
|
|
|
|
* thread pool) and call the specified callback in the specified loop after
|
|
|
|
* completion. If the user gives NULL as the callback the blocking system
|
|
|
|
* call will be called synchronously. req should be a pointer to an
|
|
|
|
* uninitialized uv_fs_t object.
|
|
|
|
*
|
|
|
|
* uv_fs_req_cleanup() must be called after completion of the uv_fs_
|
|
|
|
* function to free any internal memory allocations associated with the
|
|
|
|
* request.
|
|
|
|
*/
|
|
|
|
|
|
|
|
typedef enum {
|
|
|
|
UV_FS_UNKNOWN = -1,
|
|
|
|
UV_FS_CUSTOM,
|
|
|
|
UV_FS_OPEN,
|
|
|
|
UV_FS_CLOSE,
|
|
|
|
UV_FS_READ,
|
|
|
|
UV_FS_WRITE,
|
|
|
|
UV_FS_SENDFILE,
|
|
|
|
UV_FS_STAT,
|
|
|
|
UV_FS_LSTAT,
|
|
|
|
UV_FS_FSTAT,
|
|
|
|
UV_FS_FTRUNCATE,
|
|
|
|
UV_FS_UTIME,
|
|
|
|
UV_FS_FUTIME,
|
|
|
|
UV_FS_CHMOD,
|
|
|
|
UV_FS_FCHMOD,
|
|
|
|
UV_FS_FSYNC,
|
|
|
|
UV_FS_FDATASYNC,
|
|
|
|
UV_FS_UNLINK,
|
|
|
|
UV_FS_RMDIR,
|
|
|
|
UV_FS_MKDIR,
|
|
|
|
UV_FS_RENAME,
|
|
|
|
UV_FS_READDIR,
|
|
|
|
UV_FS_LINK,
|
|
|
|
UV_FS_SYMLINK,
|
|
|
|
UV_FS_READLINK,
|
|
|
|
UV_FS_CHOWN,
|
|
|
|
UV_FS_FCHOWN
|
|
|
|
} uv_fs_type;
|
|
|
|
|
|
|
|
/* uv_fs_t is a subclass of uv_req_t */
|
|
|
|
struct uv_fs_s {
|
|
|
|
UV_REQ_FIELDS
|
|
|
|
uv_fs_type fs_type;
|
|
|
|
uv_loop_t* loop;
|
|
|
|
uv_fs_cb cb;
|
|
|
|
ssize_t result;
|
|
|
|
void* ptr;
|
|
|
|
const char* path;
|
|
|
|
uv_err_code errorno;
|
|
|
|
uv_statbuf_t statbuf; /* Stores the result of uv_fs_stat and uv_fs_fstat. */
|
|
|
|
UV_FS_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN void uv_fs_req_cleanup(uv_fs_t* req);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_close(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_open(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
int flags, int mode, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_read(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
void* buf, size_t length, int64_t offset, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_unlink(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_write(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
void* buf, size_t length, int64_t offset, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_mkdir(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
int mode, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_rmdir(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_readdir(uv_loop_t* loop, uv_fs_t* req,
|
|
|
|
const char* path, int flags, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_stat(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_fstat(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_rename(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
const char* new_path, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_fsync(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_fdatasync(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_ftruncate(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
int64_t offset, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_sendfile(uv_loop_t* loop, uv_fs_t* req, uv_file out_fd,
|
|
|
|
uv_file in_fd, int64_t in_offset, size_t length, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_chmod(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
int mode, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_utime(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
double atime, double mtime, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_futime(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
double atime, double mtime, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_lstat(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_link(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
const char* new_path, uv_fs_cb cb);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This flag can be used with uv_fs_symlink on Windows
|
|
|
|
* to specify whether path argument points to a directory.
|
|
|
|
*/
|
|
|
|
#define UV_FS_SYMLINK_DIR 0x0001
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This flag can be used with uv_fs_symlink on Windows
|
|
|
|
* to specify whether the symlink is to be created using junction points.
|
|
|
|
*/
|
|
|
|
#define UV_FS_SYMLINK_JUNCTION 0x0002
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_symlink(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
const char* new_path, int flags, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_readlink(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_fchmod(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
int mode, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_chown(uv_loop_t* loop, uv_fs_t* req, const char* path,
|
|
|
|
uv_uid_t uid, uv_gid_t gid, uv_fs_cb cb);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_fchown(uv_loop_t* loop, uv_fs_t* req, uv_file file,
|
|
|
|
uv_uid_t uid, uv_gid_t gid, uv_fs_cb cb);
|
|
|
|
|
|
|
|
|
|
|
|
enum uv_fs_event {
|
|
|
|
UV_RENAME = 1,
|
|
|
|
UV_CHANGE = 2
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
struct uv_fs_event_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
char* filename;
|
|
|
|
UV_FS_EVENT_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* uv_fs_stat() based polling file watcher.
|
|
|
|
*/
|
|
|
|
struct uv_fs_poll_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
/* Private, don't touch. */
|
|
|
|
void* poll_ctx;
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_poll_init(uv_loop_t* loop, uv_fs_poll_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check the file at `path` for changes every `interval` milliseconds.
|
|
|
|
*
|
|
|
|
* Your callback i invoked with `status == -1` if `path` does not exist
|
|
|
|
* or is inaccessible. The watcher is *not* stopped but your callback is
|
|
|
|
* not called again until something changes (e.g. when the file is created
|
|
|
|
* or the error reason changes).
|
|
|
|
*
|
|
|
|
* When `status == 0`, your callback receives pointers to the old and new
|
|
|
|
* `uv_statbuf_t` structs. They are valid for the duration of the callback
|
|
|
|
* only!
|
|
|
|
*
|
|
|
|
* For maximum portability, use multi-second intervals. Sub-second intervals
|
|
|
|
* will not detect all changes on many file systems.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_fs_poll_start(uv_fs_poll_t* handle,
|
|
|
|
uv_fs_poll_cb poll_cb,
|
|
|
|
const char* path,
|
|
|
|
unsigned int interval);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_poll_stop(uv_fs_poll_t* handle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* UNIX signal handling on a per-event loop basis. The implementation is not
|
|
|
|
* ultra efficient so don't go creating a million event loops with a million
|
|
|
|
* signal watchers.
|
|
|
|
*
|
|
|
|
* Note to Linux users: SIGRT0 and SIGRT1 (signals 32 and 33) are used by the
|
|
|
|
* NPTL pthreads library to manage threads. Installing watchers for those
|
|
|
|
* signals will lead to unpredictable behavior and is strongly discouraged.
|
|
|
|
* Future versions of libuv may simply reject them.
|
|
|
|
*
|
|
|
|
* Some signal support is available on Windows:
|
|
|
|
*
|
|
|
|
* SIGINT is normally delivered when the user presses CTRL+C. However, like
|
|
|
|
* on Unix, it is not generated when terminal raw mode is enabled.
|
|
|
|
*
|
|
|
|
* SIGBREAK is delivered when the user pressed CTRL+BREAK.
|
|
|
|
*
|
|
|
|
* SIGHUP is generated when the user closes the console window. On SIGHUP the
|
|
|
|
* program is given approximately 10 seconds to perform cleanup. After that
|
|
|
|
* Windows will unconditionally terminate it.
|
|
|
|
*
|
|
|
|
* SIGWINCH is raised whenever libuv detects that the console has been
|
|
|
|
* resized. SIGWINCH is emulated by libuv when the program uses an uv_tty_t
|
|
|
|
* handle to write to the console. SIGWINCH may not always be delivered in a
|
|
|
|
* timely manner; libuv will only detect size changes when the cursor is
|
|
|
|
* being moved. When a readable uv_tty_handle is used in raw mode, resizing
|
|
|
|
* the console buffer will also trigger a SIGWINCH signal.
|
|
|
|
*
|
|
|
|
* Watchers for other signals can be successfully created, but these signals
|
|
|
|
* are never generated. These signals are: SIGILL, SIGABRT, SIGFPE, SIGSEGV,
|
|
|
|
* SIGTERM and SIGKILL.
|
|
|
|
*
|
|
|
|
* Note that calls to raise() or abort() to programmatically raise a signal are
|
|
|
|
* not detected by libuv; these will not trigger a signal watcher.
|
|
|
|
*/
|
|
|
|
struct uv_signal_s {
|
|
|
|
UV_HANDLE_FIELDS
|
|
|
|
uv_signal_cb signal_cb;
|
|
|
|
int signum;
|
|
|
|
UV_SIGNAL_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
UV_EXTERN int uv_signal_init(uv_loop_t* loop, uv_signal_t* handle);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_signal_start(uv_signal_t* handle,
|
|
|
|
uv_signal_cb signal_cb,
|
|
|
|
int signum);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_signal_stop(uv_signal_t* handle);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Gets load avg
|
|
|
|
* See: http://en.wikipedia.org/wiki/Load_(computing)
|
|
|
|
* (Returns [0,0,0] for windows and cygwin)
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_loadavg(double avg[3]);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Flags to be passed to uv_fs_event_init.
|
|
|
|
*/
|
|
|
|
enum uv_fs_event_flags {
|
|
|
|
/*
|
|
|
|
* By default, if the fs event watcher is given a directory name, we will
|
|
|
|
* watch for all events in that directory. This flags overrides this behavior
|
|
|
|
* and makes fs_event report only changes to the directory entry itself. This
|
|
|
|
* flag does not affect individual files watched.
|
|
|
|
* This flag is currently not implemented yet on any backend.
|
|
|
|
*/
|
|
|
|
UV_FS_EVENT_WATCH_ENTRY = 1,
|
|
|
|
|
|
|
|
/*
|
|
|
|
* By default uv_fs_event will try to use a kernel interface such as inotify
|
|
|
|
* or kqueue to detect events. This may not work on remote filesystems such
|
|
|
|
* as NFS mounts. This flag makes fs_event fall back to calling stat() on a
|
|
|
|
* regular interval.
|
|
|
|
* This flag is currently not implemented yet on any backend.
|
|
|
|
*/
|
|
|
|
UV_FS_EVENT_STAT = 2,
|
|
|
|
|
|
|
|
/*
|
|
|
|
* By default, event watcher, when watching directory, is not registering
|
|
|
|
* (is ignoring) changes in it's subdirectories.
|
|
|
|
* This flag will override this behaviour on platforms that support it.
|
|
|
|
*/
|
|
|
|
UV_FS_EVENT_RECURSIVE = 3
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
UV_EXTERN int uv_fs_event_init(uv_loop_t* loop, uv_fs_event_t* handle,
|
|
|
|
const char* filename, uv_fs_event_cb cb, int flags);
|
|
|
|
|
|
|
|
/* Utility */
|
|
|
|
|
|
|
|
/* Convert string ip addresses to binary structures */
|
|
|
|
UV_EXTERN struct sockaddr_in uv_ip4_addr(const char* ip, int port);
|
|
|
|
UV_EXTERN struct sockaddr_in6 uv_ip6_addr(const char* ip, int port);
|
|
|
|
|
|
|
|
/* Convert binary addresses to strings */
|
|
|
|
UV_EXTERN int uv_ip4_name(struct sockaddr_in* src, char* dst, size_t size);
|
|
|
|
UV_EXTERN int uv_ip6_name(struct sockaddr_in6* src, char* dst, size_t size);
|
|
|
|
|
|
|
|
/* Cross-platform IPv6-capable implementation of the 'standard' inet_ntop */
|
|
|
|
/* and inet_pton functions. On success they return UV_OK. If an error */
|
|
|
|
/* the target of the `dst` pointer is unmodified. */
|
|
|
|
UV_EXTERN uv_err_t uv_inet_ntop(int af, const void* src, char* dst, size_t size);
|
|
|
|
UV_EXTERN uv_err_t uv_inet_pton(int af, const char* src, void* dst);
|
|
|
|
|
|
|
|
/* Gets the executable path */
|
|
|
|
UV_EXTERN int uv_exepath(char* buffer, size_t* size);
|
|
|
|
|
|
|
|
/* Gets the current working directory */
|
|
|
|
UV_EXTERN uv_err_t uv_cwd(char* buffer, size_t size);
|
|
|
|
|
|
|
|
/* Changes the current working directory */
|
|
|
|
UV_EXTERN uv_err_t uv_chdir(const char* dir);
|
|
|
|
|
|
|
|
/* Gets memory info in bytes */
|
|
|
|
UV_EXTERN uint64_t uv_get_free_memory(void);
|
|
|
|
UV_EXTERN uint64_t uv_get_total_memory(void);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns the current high-resolution real time. This is expressed in
|
|
|
|
* nanoseconds. It is relative to an arbitrary time in the past. It is not
|
|
|
|
* related to the time of day and therefore not subject to clock drift. The
|
|
|
|
* primary use is for measuring performance between intervals.
|
|
|
|
*
|
|
|
|
* Note not every platform can support nanosecond resolution; however, this
|
|
|
|
* value will always be in nanoseconds.
|
|
|
|
*/
|
|
|
|
UV_EXTERN extern uint64_t uv_hrtime(void);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Disables inheritance for file descriptors / handles that this process
|
|
|
|
* inherited from its parent. The effect is that child processes spawned by
|
|
|
|
* this process don't accidentally inherit these handles.
|
|
|
|
*
|
|
|
|
* It is recommended to call this function as early in your program as possible,
|
|
|
|
* before the inherited file descriptors can be closed or duplicated.
|
|
|
|
*
|
|
|
|
* Note that this function works on a best-effort basis: there is no guarantee
|
|
|
|
* that libuv can discover all file descriptors that were inherited. In general
|
|
|
|
* it does a better job on Windows than it does on unix.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_disable_stdio_inheritance(void);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Opens a shared library. The filename is in utf-8. Returns 0 on success and
|
|
|
|
* -1 on error. Call `uv_dlerror(uv_lib_t*)` to get the error message.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_dlopen(const char* filename, uv_lib_t* lib);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Close the shared library.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_dlclose(uv_lib_t* lib);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Retrieves a data pointer from a dynamic library. It is legal for a symbol to
|
|
|
|
* map to NULL. Returns 0 on success and -1 if the symbol was not found.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_dlsym(uv_lib_t* lib, const char* name, void** ptr);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Returns the last uv_dlopen() or uv_dlsym() error message.
|
|
|
|
*/
|
|
|
|
UV_EXTERN const char* uv_dlerror(uv_lib_t* lib);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The mutex functions return 0 on success, -1 on error
|
|
|
|
* (unless the return type is void, of course).
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_mutex_init(uv_mutex_t* handle);
|
|
|
|
UV_EXTERN void uv_mutex_destroy(uv_mutex_t* handle);
|
|
|
|
UV_EXTERN void uv_mutex_lock(uv_mutex_t* handle);
|
|
|
|
UV_EXTERN int uv_mutex_trylock(uv_mutex_t* handle);
|
|
|
|
UV_EXTERN void uv_mutex_unlock(uv_mutex_t* handle);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Same goes for the read/write lock functions.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_rwlock_init(uv_rwlock_t* rwlock);
|
|
|
|
UV_EXTERN void uv_rwlock_destroy(uv_rwlock_t* rwlock);
|
|
|
|
UV_EXTERN void uv_rwlock_rdlock(uv_rwlock_t* rwlock);
|
|
|
|
UV_EXTERN int uv_rwlock_tryrdlock(uv_rwlock_t* rwlock);
|
|
|
|
UV_EXTERN void uv_rwlock_rdunlock(uv_rwlock_t* rwlock);
|
|
|
|
UV_EXTERN void uv_rwlock_wrlock(uv_rwlock_t* rwlock);
|
|
|
|
UV_EXTERN int uv_rwlock_trywrlock(uv_rwlock_t* rwlock);
|
|
|
|
UV_EXTERN void uv_rwlock_wrunlock(uv_rwlock_t* rwlock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Same goes for the semaphore functions.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_sem_init(uv_sem_t* sem, unsigned int value);
|
|
|
|
UV_EXTERN void uv_sem_destroy(uv_sem_t* sem);
|
|
|
|
UV_EXTERN void uv_sem_post(uv_sem_t* sem);
|
|
|
|
UV_EXTERN void uv_sem_wait(uv_sem_t* sem);
|
|
|
|
UV_EXTERN int uv_sem_trywait(uv_sem_t* sem);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Same goes for the condition variable functions.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_cond_init(uv_cond_t* cond);
|
|
|
|
UV_EXTERN void uv_cond_destroy(uv_cond_t* cond);
|
|
|
|
UV_EXTERN void uv_cond_signal(uv_cond_t* cond);
|
|
|
|
UV_EXTERN void uv_cond_broadcast(uv_cond_t* cond);
|
|
|
|
/* Waits on a condition variable without a timeout.
|
|
|
|
*
|
|
|
|
* Note:
|
|
|
|
* 1. callers should be prepared to deal with spurious wakeups.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_cond_wait(uv_cond_t* cond, uv_mutex_t* mutex);
|
|
|
|
/* Waits on a condition variable with a timeout in nano seconds.
|
|
|
|
* Returns 0 for success or -1 on timeout, * aborts when other errors happen.
|
|
|
|
*
|
|
|
|
* Note:
|
|
|
|
* 1. callers should be prepared to deal with spurious wakeups.
|
|
|
|
* 2. the granularity of timeout on Windows is never less than one millisecond.
|
|
|
|
* 3. uv_cond_timedwait takes a relative timeout, not an absolute time.
|
|
|
|
*/
|
|
|
|
UV_EXTERN int uv_cond_timedwait(uv_cond_t* cond, uv_mutex_t* mutex,
|
|
|
|
uint64_t timeout);
|
|
|
|
|
|
|
|
UV_EXTERN int uv_barrier_init(uv_barrier_t* barrier, unsigned int count);
|
|
|
|
UV_EXTERN void uv_barrier_destroy(uv_barrier_t* barrier);
|
|
|
|
UV_EXTERN void uv_barrier_wait(uv_barrier_t* barrier);
|
|
|
|
|
|
|
|
/* Runs a function once and only once. Concurrent calls to uv_once() with the
|
|
|
|
* same guard will block all callers except one (it's unspecified which one).
|
|
|
|
* The guard should be initialized statically with the UV_ONCE_INIT macro.
|
|
|
|
*/
|
|
|
|
UV_EXTERN void uv_once(uv_once_t* guard, void (*callback)(void));
|
|
|
|
|
|
|
|
UV_EXTERN int uv_thread_create(uv_thread_t *tid,
|
|
|
|
void (*entry)(void *arg), void *arg);
|
|
|
|
UV_EXTERN unsigned long uv_thread_self(void);
|
|
|
|
UV_EXTERN int uv_thread_join(uv_thread_t *tid);
|
|
|
|
|
|
|
|
/* the presence of these unions force similar struct layout */
|
|
|
|
union uv_any_handle {
|
|
|
|
uv_handle_t handle;
|
|
|
|
uv_stream_t stream;
|
|
|
|
uv_tcp_t tcp;
|
|
|
|
uv_pipe_t pipe;
|
|
|
|
uv_prepare_t prepare;
|
|
|
|
uv_check_t check;
|
|
|
|
uv_idle_t idle;
|
|
|
|
uv_async_t async;
|
|
|
|
uv_timer_t timer;
|
|
|
|
uv_fs_event_t fs_event;
|
|
|
|
uv_fs_poll_t fs_poll;
|
|
|
|
uv_poll_t poll;
|
|
|
|
uv_process_t process;
|
|
|
|
uv_tty_t tty;
|
|
|
|
uv_udp_t udp;
|
|
|
|
};
|
|
|
|
|
|
|
|
union uv_any_req {
|
|
|
|
uv_req_t req;
|
|
|
|
uv_write_t write;
|
|
|
|
uv_connect_t connect;
|
|
|
|
uv_shutdown_t shutdown;
|
|
|
|
uv_fs_t fs_req;
|
|
|
|
uv_work_t work_req;
|
|
|
|
uv_udp_send_t udp_send_req;
|
|
|
|
uv_getaddrinfo_t getaddrinfo_req;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
struct uv_loop_s {
|
|
|
|
/* User data - use this for whatever. */
|
|
|
|
void* data;
|
|
|
|
/* The last error */
|
|
|
|
uv_err_t last_err;
|
|
|
|
/* Loop reference counting */
|
|
|
|
unsigned int active_handles;
|
|
|
|
ngx_queue_t handle_queue;
|
|
|
|
ngx_queue_t active_reqs;
|
|
|
|
/* Internal flag to signal loop stop */
|
|
|
|
unsigned int stop_flag;
|
|
|
|
UV_LOOP_PRIVATE_FIELDS
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* Don't export the private CPP symbols. */
|
|
|
|
#undef UV_HANDLE_TYPE_PRIVATE
|
|
|
|
#undef UV_REQ_TYPE_PRIVATE
|
|
|
|
#undef UV_REQ_PRIVATE_FIELDS
|
|
|
|
#undef UV_STREAM_PRIVATE_FIELDS
|
|
|
|
#undef UV_TCP_PRIVATE_FIELDS
|
|
|
|
#undef UV_PREPARE_PRIVATE_FIELDS
|
|
|
|
#undef UV_CHECK_PRIVATE_FIELDS
|
|
|
|
#undef UV_IDLE_PRIVATE_FIELDS
|
|
|
|
#undef UV_ASYNC_PRIVATE_FIELDS
|
|
|
|
#undef UV_TIMER_PRIVATE_FIELDS
|
|
|
|
#undef UV_GETADDRINFO_PRIVATE_FIELDS
|
|
|
|
#undef UV_FS_REQ_PRIVATE_FIELDS
|
|
|
|
#undef UV_WORK_PRIVATE_FIELDS
|
|
|
|
#undef UV_FS_EVENT_PRIVATE_FIELDS
|
|
|
|
#undef UV_SIGNAL_PRIVATE_FIELDS
|
|
|
|
#undef UV_LOOP_PRIVATE_FIELDS
|
|
|
|
#undef UV_LOOP_PRIVATE_PLATFORM_FIELDS
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* UV_H */
|