0971598d02
Don't make the event loop spin when connect() returns EINPROGRESS.
Test case:
#include "uv.h"
static void connect_cb(uv_connect_t* req, int status) {
// ...
}
int main() {
uv_tcp_t handle;
uv_connect_t req;
struct sockaddr_in addr;
addr = uv_ip4_addr("8.8.8.8", 1234); // unreachable
uv_tcp_init(uv_default_loop(), &handle);
uv_tcp_connect(&req, (uv_stream_t*)&handle, addr, connect_cb);
uv_run(uv_default_loop()); // busy loops until connection times out
return 0;
}
After EINPROGRESS, there are zero active handles and one active request. That
in turn makes uv__poll_timeout() believe that it should merely poll, not block,
in epoll() / kqueue() / port_getn().
Sidestep that by artificially starting the handle on connect() and stopping it
again once the TCP handshake completes / is rejected / times out.
It's a slightly hacky approach because I don't want to change the ABI of the
stable branch. I'll address it properly in the master branch.
180 lines
6.3 KiB
C
180 lines
6.3 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 "uv-eio.h"
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#include <assert.h>
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#include <stdlib.h> /* abort */
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#if __STRICT_ANSI__
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# define inline __inline
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#endif
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#undef HAVE_FUTIMES
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#undef HAVE_KQUEUE
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#undef HAVE_PORTS_FS
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#if __linux__
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# include "linux/syscalls.h"
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# define HAVE_FUTIMES 1 /* emulated with utimesat() */
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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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# ifdef PORT_SOURCE_FILE
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# define HAVE_PORTS_FS 1
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# endif
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# define HAVE_FUTIMES 1
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# define futimes(fd, tv) futimesat(fd, (void*)0, tv)
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#endif /* __sun */
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#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun)
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# define HAVE_FUTIMES 1
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#endif
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/* FIXME exact copy of the #ifdef guard in uv-unix.h */
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#if defined(__APPLE__) \
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|| defined(__FreeBSD__) \
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|| defined(__OpenBSD__) \
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|| defined(__NetBSD__)
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# define HAVE_KQUEUE 1
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#endif
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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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#define UV__IO_READ EV_READ
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#define UV__IO_WRITE EV_WRITE
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#define UV__IO_ERROR EV_ERROR
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/* 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_TCP_NODELAY = 0x100, /* Disable Nagle. */
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UV_TCP_KEEPALIVE = 0x200, /* Turn on keep-alive. */
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UV_TCP_CONNECTING = 0x400 /* Not alway set. See uv_connect() in tcp.c */
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};
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inline 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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loop->counters.req_init++;
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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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/* core */
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void uv__handle_init(uv_loop_t* loop, uv_handle_t* handle, uv_handle_type type);
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int uv__nonblock(int fd, int set);
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int uv__cloexec(int fd, int set);
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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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int uv_async_stop(uv_async_t* handle);
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void uv__io_init(uv__io_t* handle, uv__io_cb cb, int fd, int events);
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void uv__io_set(uv__io_t* handle, uv__io_cb cb, int fd, int events);
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void uv__io_start(uv_loop_t* loop, uv__io_t* handle);
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void uv__io_stop(uv_loop_t* loop, uv__io_t* handle);
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void uv__io_feed(uv_loop_t* loop, uv__io_t* handle, int event);
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int uv__io_active(uv__io_t* handle);
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/* loop */
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int uv__loop_init(uv_loop_t* loop, int default_loop);
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void uv__loop_delete(uv_loop_t* 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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/* error */
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uv_err_code uv_translate_sys_error(int sys_errno);
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void uv_fatal_error(const int errorno, const char* syscall);
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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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void uv__server_io(uv_loop_t* loop, uv__io_t* watcher, int events);
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int uv__accept(int sockfd);
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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(uv_tcp_t* handle, int enable);
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int uv__tcp_keepalive(uv_tcp_t* handle, int enable, 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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unsigned int uv__next_timeout(uv_loop_t* loop);
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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__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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#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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#endif /* UV_UNIX_INTERNAL_H_ */
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