osfmk/kern/wait_queue.c

105  *	Each thread may be waiting for exactly one event; this event
107  *	by performing a thread_wakeup_prim() on its event,
117  *	wait event field and the queue chain field.  Because wakeup
118  *	operations only have the event as an argument, the event hash
125  *	The wait event hash table declarations are as follows:
1155  *		waiting for a particular event to be posted to that queue.
1165 	event64_t event,
1179 		if (event == NO_EVENT64 && wqs_is_preposted(wqs))
1208 		thread->wait_event = event;
1228  *		waiting for a particular event to be posted to that queue.
1236 	event_t event,
1251 	ret = wait_queue_assert_wait64_locked(wq, CAST_DOWN(event64_t,event),
1263  *		waiting for a particular event to be posted to that queue.
1270 	event64_t event,
1285 	ret = wait_queue_assert_wait64_locked(wq, event, interruptible, deadline, thread);
1308 	event64_t event,
1333 			 * as pre-post, and it is the "generic event" then mark
1337 			if (event == NO_EVENT64 && set_queue->wqs_prepost && !wql_is_preposted(wql)) {
1342 				_wait_queue_select64_all(&set_queue->wqs_wait_queue, event, wake_queue);
1348 			 * the event we are posting to this queue, pull
1353 			if (t->wait_event == event) {
1371  *		wait queue and waiting on the specified event.
1376  *		KERN_NOT_WAITING - No threads were waiting <wq,event> pair
1381 	event64_t event,
1401 	_wait_queue_select64_all(wq, event, q);
1423  *		wait queue and waiting on the specified event.
1428  *		KERN_NOT_WAITING - No threads were waiting <wq,event> pair
1433 	event_t event,
1449 				wq, CAST_DOWN(event64_t,event),
1460  *		wait queue and waiting on the specified event.
1465  *		KERN_NOT_WAITING - No threads were waiting <wq,event> pair
1470 	event64_t event,
1482 	ret = wait_queue_wakeup64_all_locked(wq, event, result, TRUE);
1506 	event64_t event)
1540 				t = _wait_queue_select64_one(&set_queue->wqs_wait_queue, event);
1546 			if (event == NO_EVENT64 && set_queue->wqs_prepost && !wql_is_preposted(wql)) {
1556 			 * the event we are posting to this queue, pull
1560 			if (t->wait_event == event) {
1612  *		<wait_queue, event> pair.
1624 	event64_t event,
1633 	if ((thread->wait_queue == wq) && (thread->wait_event == event)) {
1662 								event,
1691 	event64_t event,
1700 	thread = _wait_queue_select64_one(wq, event);
1724  *		KERN_NOT_WAITING - No thread was waiting <wq,event> pair
1729 	event64_t event,
1737 	thread = _wait_queue_select64_one(wq, event);
1757  *		wait queue for the specified event.
1762  *		KERN_NOT_WAITING - No thread was waiting <wq,event> pair
1767 	event_t event,
1780 	thread = _wait_queue_select64_one(wq, CAST_DOWN(event64_t,event));
1809  *		wait queue for the specified event.
1814  *		KERN_NOT_WAITING - No thread was waiting <wq,event> pair
1819 	event64_t event,
1830 	thread = _wait_queue_select64_one(wq, event);
1853  *		and waiting on the specified event.
1870 	event64_t event,
1883 	res = _wait_queue_select64_thread(wq, event, thread);
1901  *		and waiting on the specified event.
1918 	event_t event,
1931 	res = _wait_queue_select64_thread(wq, CAST_DOWN(event64_t,event), thread);
1950  *		and waiting on the specified event.
1967 	event64_t event,
1980 	res = _wait_queue_select64_thread(wq, event, thread);