stream.c

/* 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.
 */

#include "uv.h"
#include "internal.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <sys/un.h>
#include <unistd.h>

#if defined(__APPLE__)
# include <sys/event.h>
# include <sys/time.h>
# include <sys/select.h>

/* Forward declaration */
typedef struct uv__stream_select_s uv__stream_select_t;

struct uv__stream_select_s {
  uv_stream_t* stream;
  uv_thread_t thread;
  uv_sem_t sem;
  uv_mutex_t mutex;
  uv_async_t async;
  int events;
  int fake_fd;
  int int_fd;
  int fd;
};
#endif /* defined(__APPLE__) */

static void uv__stream_connect(uv_stream_t*);
static void uv__write(uv_stream_t* stream);
static void uv__read(uv_stream_t* stream);
static void uv__stream_io(uv_loop_t* loop, uv__io_t* w, unsigned int events);


/* Used by the accept() EMFILE party trick. */
static int uv__open_cloexec(const char* path, int flags) {
  int fd;

#if defined(__linux__)
  fd = open(path, flags | UV__O_CLOEXEC);
  if (fd != -1)