C++ (Cpp) uv_spinlock_trylock 예제들

예제 #1

파일: tty.c 프로젝트: 4872866/node

/* This function is async signal-safe, meaning that it's safe to call from
 * inside a signal handler _unless_ execution was inside uv_tty_set_mode()'s
 * critical section when the signal was raised.
 */
int uv_tty_reset_mode(void) {
  int err;

  if (!uv_spinlock_trylock(&termios_spinlock))
    return -EBUSY;  /* In uv_tty_set_mode(). */

  err = 0;
  if (orig_termios_fd != -1)
    if (tcsetattr(orig_termios_fd, TCSANOW, &orig_termios))
      err = -errno;

  uv_spinlock_unlock(&termios_spinlock);
  return err;
}

예제 #2

파일: tty.c 프로젝트: jasnell/libuv

/* This function is async signal-safe, meaning that it's safe to call from
 * inside a signal handler _unless_ execution was inside uv_tty_set_mode()'s
 * critical section when the signal was raised.
 */
int uv_tty_reset_mode(void) {
  int saved_errno;
  int err;

  saved_errno = errno;
  if (!uv_spinlock_trylock(&termios_spinlock))
    return UV_EBUSY;  /* In uv_tty_set_mode(). */

  err = 0;
  if (orig_termios_fd != -1)
    if (tcsetattr(orig_termios_fd, TCSANOW, &orig_termios))
      err = UV__ERR(errno);

  uv_spinlock_unlock(&termios_spinlock);
  errno = saved_errno;

  return err;
}