Function sleepq_check_timeout

freebsd/kern/subr_sleepqueue.c:617–631

* Check to see if we timed out. */

 * Check to see if we timed out.
 */
static inline int
sleepq_check_timeout(void)
{
	struct thread *td;
	int res;

	res = 0;
	td = curthread;
	if (td->td_sleeptimo != 0) {
		if (td->td_sleeptimo <= sbinuptime())
			res = EWOULDBLOCK;
		td->td_sleeptimo = 0;
	}
	return (res);
}

/*
 * Check to see if we were awoken by a signal.