Function kern_umtx_wake

freebsd/kern/kern_umtx.c:968–982

* Wake up threads sleeping on the specified address. */

 * Wake up threads sleeping on the specified address.
 */
int
kern_umtx_wake(struct thread *td, void *uaddr, int n_wake, int is_private)
{
	struct umtx_key key;
	int ret;

	if ((ret = umtx_key_get(uaddr, TYPE_SIMPLE_WAIT,
	    is_private ? THREAD_SHARE : AUTO_SHARE, &key)) != 0)
		return (ret);
	umtxq_lock(&key);
	umtxq_signal(&key, n_wake);
	umtxq_unlock(&key);
	umtx_key_release(&key);
	return (0);
}

/*
 * Lock PTHREAD_PRIO_NONE protocol POSIX mutex.