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libuv/src/unix/core.c  view on Meta::CPAN

  w->pevents |= events;
  maybe_resize(loop, w->fd + 1);

#if !defined(__sun)
  /* The event ports backend needs to rearm all file descriptors on each and
   * every tick of the event loop but the other backends allow us to
   * short-circuit here if the event mask is unchanged.
   */
  if (w->events == w->pevents)
    return;
#endif

  if (QUEUE_EMPTY(&w->watcher_queue))
    QUEUE_INSERT_TAIL(&loop->watcher_queue, &w->watcher_queue);

  if (loop->watchers[w->fd] == NULL) {
    loop->watchers[w->fd] = w;
    loop->nfds++;
  }
}


void uv__io_stop(uv_loop_t* loop, uv__io_t* w, unsigned int events) {
  assert(0 == (events & ~(POLLIN | POLLOUT | UV__POLLRDHUP | UV__POLLPRI)));
  assert(0 != events);

  if (w->fd == -1)
    return;

  assert(w->fd >= 0);

  /* Happens when uv__io_stop() is called on a handle that was never started. */
  if ((unsigned) w->fd >= loop->nwatchers)
    return;

  w->pevents &= ~events;

  if (w->pevents == 0) {
    QUEUE_REMOVE(&w->watcher_queue);
    QUEUE_INIT(&w->watcher_queue);

    if (loop->watchers[w->fd] != NULL) {
      assert(loop->watchers[w->fd] == w);
      assert(loop->nfds > 0);
      loop->watchers[w->fd] = NULL;
      loop->nfds--;
      w->events = 0;
    }
  }
  else if (QUEUE_EMPTY(&w->watcher_queue))
    QUEUE_INSERT_TAIL(&loop->watcher_queue, &w->watcher_queue);
}


void uv__io_close(uv_loop_t* loop, uv__io_t* w) {
  uv__io_stop(loop, w, POLLIN | POLLOUT | UV__POLLRDHUP | UV__POLLPRI);
  QUEUE_REMOVE(&w->pending_queue);

  /* Remove stale events for this file descriptor */
  if (w->fd != -1)
    uv__platform_invalidate_fd(loop, w->fd);
}


void uv__io_feed(uv_loop_t* loop, uv__io_t* w) {
  if (QUEUE_EMPTY(&w->pending_queue))
    QUEUE_INSERT_TAIL(&loop->pending_queue, &w->pending_queue);
}


int uv__io_active(const uv__io_t* w, unsigned int events) {
  assert(0 == (events & ~(POLLIN | POLLOUT | UV__POLLRDHUP | UV__POLLPRI)));
  assert(0 != events);
  return 0 != (w->pevents & events);
}


int uv__fd_exists(uv_loop_t* loop, int fd) {
  return (unsigned) fd < loop->nwatchers && loop->watchers[fd] != NULL;
}


int uv_getrusage(uv_rusage_t* rusage) {
  struct rusage usage;

  if (getrusage(RUSAGE_SELF, &usage))
    return UV__ERR(errno);

  rusage->ru_utime.tv_sec = usage.ru_utime.tv_sec;
  rusage->ru_utime.tv_usec = usage.ru_utime.tv_usec;

  rusage->ru_stime.tv_sec = usage.ru_stime.tv_sec;
  rusage->ru_stime.tv_usec = usage.ru_stime.tv_usec;

#if !defined(__MVS__)
  rusage->ru_maxrss = usage.ru_maxrss;
  rusage->ru_ixrss = usage.ru_ixrss;
  rusage->ru_idrss = usage.ru_idrss;
  rusage->ru_isrss = usage.ru_isrss;
  rusage->ru_minflt = usage.ru_minflt;
  rusage->ru_majflt = usage.ru_majflt;
  rusage->ru_nswap = usage.ru_nswap;
  rusage->ru_inblock = usage.ru_inblock;
  rusage->ru_oublock = usage.ru_oublock;
  rusage->ru_msgsnd = usage.ru_msgsnd;
  rusage->ru_msgrcv = usage.ru_msgrcv;
  rusage->ru_nsignals = usage.ru_nsignals;
  rusage->ru_nvcsw = usage.ru_nvcsw;
  rusage->ru_nivcsw = usage.ru_nivcsw;
#endif

  return 0;
}


int uv__open_cloexec(const char* path, int flags) {
  int err;
  int fd;

#if defined(UV__O_CLOEXEC)
  static int no_cloexec;