Function sleepq_sleepcnt

freebsd/kern/subr_sleepqueue.c:423–434

* Return the number of actual sleepers for the specified queue. */

 * Return the number of actual sleepers for the specified queue.
 */
u_int
sleepq_sleepcnt(const void *wchan, int queue)
{
	struct sleepqueue *sq;

	KASSERT(wchan != NULL, ("%s: invalid NULL wait channel", __func__));
	MPASS((queue >= 0) && (queue < NR_SLEEPQS));
	sq = sleepq_lookup(wchan);
	if (sq == NULL)
		return (0);
	return (sq->sq_blockedcnt[queue]);
}

static int
sleepq_check_ast_sc_locked(struct thread *td, struct sleepqueue_chain *sc)