323 lines
11 KiB
C
323 lines
11 KiB
C
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef UV_UNIX_INTERNAL_H_
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#define UV_UNIX_INTERNAL_H_
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#include "uv-common.h"
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#include <assert.h>
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#include <stdlib.h> /* abort */
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#include <string.h> /* strrchr */
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#include <fcntl.h> /* O_CLOEXEC, may be */
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#include <stdio.h>
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#if defined(__STRICT_ANSI__)
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# define inline __inline
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#endif
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#if defined(__linux__)
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# include "linux-syscalls.h"
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#endif /* __linux__ */
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#if defined(__sun)
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# include <sys/port.h>
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# include <port.h>
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#endif /* __sun */
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#if defined(_AIX)
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# define reqevents events
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# define rtnevents revents
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# include <sys/poll.h>
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#else
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# include <poll.h>
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#endif /* _AIX */
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#if defined(__ANDROID__)
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int uv__pthread_sigmask(int how, const sigset_t* set, sigset_t* oset);
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# ifdef pthread_sigmask
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# undef pthread_sigmask
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# endif
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# define pthread_sigmask(how, set, oldset) uv__pthread_sigmask(how, set, oldset)
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#endif
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#define ACCESS_ONCE(type, var) \
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(*(volatile type*) &(var))
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#define ROUND_UP(a, b) \
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((a) % (b) ? ((a) + (b)) - ((a) % (b)) : (a))
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#define UNREACHABLE() \
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do { \
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assert(0 && "unreachable code"); \
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abort(); \
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} \
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while (0)
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#define SAVE_ERRNO(block) \
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do { \
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int _saved_errno = errno; \
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do { block; } while (0); \
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errno = _saved_errno; \
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} \
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while (0)
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/* The __clang__ and __INTEL_COMPILER checks are superfluous because they
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* define __GNUC__. They are here to convey to you, dear reader, that these
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* macros are enabled when compiling with clang or icc.
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*/
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#if defined(__clang__) || \
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defined(__GNUC__) || \
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defined(__INTEL_COMPILER) || \
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defined(__SUNPRO_C)
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# define UV_DESTRUCTOR(declaration) __attribute__((destructor)) declaration
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# define UV_UNUSED(declaration) __attribute__((unused)) declaration
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#else
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# define UV_DESTRUCTOR(declaration) declaration
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# define UV_UNUSED(declaration) declaration
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#endif
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/* Leans on the fact that, on Linux, POLLRDHUP == EPOLLRDHUP. */
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#ifdef POLLRDHUP
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# define UV__POLLRDHUP POLLRDHUP
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#else
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# define UV__POLLRDHUP 0x2000
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#endif
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#if !defined(O_CLOEXEC) && defined(__FreeBSD__)
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/*
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* It may be that we are just missing `__POSIX_VISIBLE >= 200809`.
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* Try using fixed value const and give up, if it doesn't work
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*/
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# define O_CLOEXEC 0x00100000
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#endif
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typedef struct uv__stream_queued_fds_s uv__stream_queued_fds_t;
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/* handle flags */
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enum {
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UV_CLOSING = 0x01, /* uv_close() called but not finished. */
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UV_CLOSED = 0x02, /* close(2) finished. */
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UV_STREAM_READING = 0x04, /* uv_read_start() called. */
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UV_STREAM_SHUTTING = 0x08, /* uv_shutdown() called but not complete. */
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UV_STREAM_SHUT = 0x10, /* Write side closed. */
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UV_STREAM_READABLE = 0x20, /* The stream is readable */
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UV_STREAM_WRITABLE = 0x40, /* The stream is writable */
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UV_STREAM_BLOCKING = 0x80, /* Synchronous writes. */
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UV_STREAM_READ_PARTIAL = 0x100, /* read(2) read less than requested. */
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UV_STREAM_READ_EOF = 0x200, /* read(2) read EOF. */
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UV_TCP_NODELAY = 0x400, /* Disable Nagle. */
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UV_TCP_KEEPALIVE = 0x800, /* Turn on keep-alive. */
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UV_TCP_SINGLE_ACCEPT = 0x1000, /* Only accept() when idle. */
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UV_HANDLE_IPV6 = 0x10000, /* Handle is bound to a IPv6 socket. */
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UV_UDP_PROCESSING = 0x20000, /* Handle is running the send callback queue. */
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UV_HANDLE_BOUND = 0x40000 /* Handle is bound to an address and port */
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};
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/* loop flags */
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enum {
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UV_LOOP_BLOCK_SIGPROF = 1
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};
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typedef enum {
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UV_CLOCK_PRECISE = 0, /* Use the highest resolution clock available. */
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UV_CLOCK_FAST = 1 /* Use the fastest clock with <= 1ms granularity. */
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} uv_clocktype_t;
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struct uv__stream_queued_fds_s {
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unsigned int size;
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unsigned int offset;
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int fds[1];
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};
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#if defined(_AIX) || \
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defined(__APPLE__) || \
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defined(__DragonFly__) || \
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defined(__FreeBSD__) || \
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defined(__FreeBSD_kernel__) || \
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defined(__linux__)
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#define uv__cloexec uv__cloexec_ioctl
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#define uv__nonblock uv__nonblock_ioctl
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#else
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#define uv__cloexec uv__cloexec_fcntl
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#define uv__nonblock uv__nonblock_fcntl
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#endif
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/* core */
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int uv__cloexec_ioctl(int fd, int set);
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int uv__cloexec_fcntl(int fd, int set);
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int uv__nonblock_ioctl(int fd, int set);
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int uv__nonblock_fcntl(int fd, int set);
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int uv__close(int fd);
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int uv__close_nocheckstdio(int fd);
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int uv__socket(int domain, int type, int protocol);
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int uv__dup(int fd);
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ssize_t uv__recvmsg(int fd, struct msghdr *msg, int flags);
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void uv__make_close_pending(uv_handle_t* handle);
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int uv__getiovmax(void);
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void uv__io_init(uv__io_t* w, uv__io_cb cb, int fd);
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void uv__io_start(uv_loop_t* loop, uv__io_t* w, unsigned int events);
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void uv__io_stop(uv_loop_t* loop, uv__io_t* w, unsigned int events);
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void uv__io_close(uv_loop_t* loop, uv__io_t* w);
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void uv__io_feed(uv_loop_t* loop, uv__io_t* w);
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int uv__io_active(const uv__io_t* w, unsigned int events);
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int uv__io_check_fd(uv_loop_t* loop, int fd);
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void uv__io_poll(uv_loop_t* loop, int timeout); /* in milliseconds or -1 */
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/* async */
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void uv__async_send(struct uv__async* wa);
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void uv__async_init(struct uv__async* wa);
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int uv__async_start(uv_loop_t* loop, struct uv__async* wa, uv__async_cb cb);
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void uv__async_stop(uv_loop_t* loop, struct uv__async* wa);
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/* loop */
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void uv__run_idle(uv_loop_t* loop);
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void uv__run_check(uv_loop_t* loop);
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void uv__run_prepare(uv_loop_t* loop);
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/* stream */
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void uv__stream_init(uv_loop_t* loop, uv_stream_t* stream,
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uv_handle_type type);
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int uv__stream_open(uv_stream_t*, int fd, int flags);
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void uv__stream_destroy(uv_stream_t* stream);
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#if defined(__APPLE__)
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int uv__stream_try_select(uv_stream_t* stream, int* fd);
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#endif /* defined(__APPLE__) */
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void uv__server_io(uv_loop_t* loop, uv__io_t* w, unsigned int events);
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int uv__accept(int sockfd);
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int uv__dup2_cloexec(int oldfd, int newfd);
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int uv__open_cloexec(const char* path, int flags);
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/* tcp */
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int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb);
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int uv__tcp_nodelay(int fd, int on);
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int uv__tcp_keepalive(int fd, int on, unsigned int delay);
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/* pipe */
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int uv_pipe_listen(uv_pipe_t* handle, int backlog, uv_connection_cb cb);
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/* timer */
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void uv__run_timers(uv_loop_t* loop);
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int uv__next_timeout(const uv_loop_t* loop);
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/* signal */
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void uv__signal_close(uv_signal_t* handle);
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void uv__signal_global_once_init(void);
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void uv__signal_loop_cleanup(uv_loop_t* loop);
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/* platform specific */
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uint64_t uv__hrtime(uv_clocktype_t type);
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int uv__kqueue_init(uv_loop_t* loop);
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int uv__platform_loop_init(uv_loop_t* loop);
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void uv__platform_loop_delete(uv_loop_t* loop);
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void uv__platform_invalidate_fd(uv_loop_t* loop, int fd);
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/* various */
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void uv__async_close(uv_async_t* handle);
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void uv__check_close(uv_check_t* handle);
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void uv__fs_event_close(uv_fs_event_t* handle);
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void uv__idle_close(uv_idle_t* handle);
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void uv__pipe_close(uv_pipe_t* handle);
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void uv__poll_close(uv_poll_t* handle);
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void uv__prepare_close(uv_prepare_t* handle);
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void uv__process_close(uv_process_t* handle);
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void uv__stream_close(uv_stream_t* handle);
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void uv__tcp_close(uv_tcp_t* handle);
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void uv__timer_close(uv_timer_t* handle);
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void uv__udp_close(uv_udp_t* handle);
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void uv__udp_finish_close(uv_udp_t* handle);
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uv_handle_type uv__handle_type(int fd);
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FILE* uv__open_file(const char* path);
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int uv__getpwuid_r(uv_passwd_t* pwd);
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#if defined(__APPLE__)
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int uv___stream_fd(const uv_stream_t* handle);
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#define uv__stream_fd(handle) (uv___stream_fd((const uv_stream_t*) (handle)))
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#else
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#define uv__stream_fd(handle) ((handle)->io_watcher.fd)
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#endif /* defined(__APPLE__) */
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#ifdef UV__O_NONBLOCK
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# define UV__F_NONBLOCK UV__O_NONBLOCK
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#else
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# define UV__F_NONBLOCK 1
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#endif
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int uv__make_socketpair(int fds[2], int flags);
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int uv__make_pipe(int fds[2], int flags);
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#if defined(__APPLE__)
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#include <AvailabilityMacros.h>
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int uv__fsevents_init(uv_fs_event_t* handle);
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int uv__fsevents_close(uv_fs_event_t* handle);
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void uv__fsevents_loop_delete(uv_loop_t* loop);
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/* OSX < 10.7 has no file events, polyfill them */
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#ifndef MAC_OS_X_VERSION_10_7
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static const int kFSEventStreamCreateFlagFileEvents = 0x00000010;
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static const int kFSEventStreamEventFlagItemCreated = 0x00000100;
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static const int kFSEventStreamEventFlagItemRemoved = 0x00000200;
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static const int kFSEventStreamEventFlagItemInodeMetaMod = 0x00000400;
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static const int kFSEventStreamEventFlagItemRenamed = 0x00000800;
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static const int kFSEventStreamEventFlagItemModified = 0x00001000;
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static const int kFSEventStreamEventFlagItemFinderInfoMod = 0x00002000;
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static const int kFSEventStreamEventFlagItemChangeOwner = 0x00004000;
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static const int kFSEventStreamEventFlagItemXattrMod = 0x00008000;
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static const int kFSEventStreamEventFlagItemIsFile = 0x00010000;
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static const int kFSEventStreamEventFlagItemIsDir = 0x00020000;
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static const int kFSEventStreamEventFlagItemIsSymlink = 0x00040000;
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#endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1070 */
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#endif /* defined(__APPLE__) */
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UV_UNUSED(static void uv__req_init(uv_loop_t* loop,
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uv_req_t* req,
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uv_req_type type)) {
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req->type = type;
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uv__req_register(loop, req);
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}
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#define uv__req_init(loop, req, type) \
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uv__req_init((loop), (uv_req_t*)(req), (type))
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UV_UNUSED(static void uv__update_time(uv_loop_t* loop)) {
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/* Use a fast time source if available. We only need millisecond precision.
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*/
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loop->time = uv__hrtime(UV_CLOCK_FAST) / 1000000;
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}
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UV_UNUSED(static char* uv__basename_r(const char* path)) {
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char* s;
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s = strrchr(path, '/');
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if (s == NULL)
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return (char*) path;
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return s + 1;
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}
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#endif /* UV_UNIX_INTERNAL_H_ */
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