66 timer_lock(proc_t *p, itimer_t *it)  in timer_lock()  argument
70 	while (it->it_lock & ITLK_LOCKED) {  in timer_lock()
71 		it->it_blockers++;  in timer_lock()
72 		cv_wait(&it->it_cv, &p->p_lock);  in timer_lock()
73 		it->it_blockers--;  in timer_lock()
76 	it->it_lock |= ITLK_LOCKED;  in timer_lock()
85 timer_unlock(proc_t *p, itimer_t *it)  in timer_unlock()  argument
88 	ASSERT(it->it_lock & ITLK_LOCKED);  in timer_unlock()
89 	it->it_lock &= ~ITLK_LOCKED;  in timer_unlock()
90 	cv_signal(&it->it_cv);  in timer_unlock()
106 timer_delete_locked(proc_t *p, timer_t tid, itimer_t *it)  in timer_delete_locked()  argument
109 	ASSERT(!(it->it_lock & ITLK_REMOVE));  in timer_delete_locked()
110 	ASSERT(it->it_lock & ITLK_LOCKED);  in timer_delete_locked()
112 	it->it_lock |= ITLK_REMOVE;  in timer_delete_locked()
120 	while (it->it_blockers) {  in timer_delete_locked()
121 		timer_unlock(p, it);  in timer_delete_locked()
122 		cv_wait(&it->it_cv, &p->p_lock);  in timer_delete_locked()
123 		timer_lock(p, it);  in timer_delete_locked()
126 	ASSERT(p->p_itimer[tid] == it);  in timer_delete_locked()
138 	it->it_backend->clk_timer_delete(it);  in timer_delete_locked()
140 	if (it->it_portev) {  in timer_delete_locked()
141 		mutex_enter(&it->it_mutex);  in timer_delete_locked()
142 		if (it->it_portev) {  in timer_delete_locked()
145 			(void) port_dissociate_ksource(it->it_portfd,  in timer_delete_locked()
146 			    PORT_SOURCE_TIMER, (port_source_t *)it->it_portsrc);  in timer_delete_locked()
147 			pev = (port_kevent_t *)it->it_portev;  in timer_delete_locked()
148 			it->it_portev = NULL;  in timer_delete_locked()
149 			it->it_flags &= ~IT_PORT;  in timer_delete_locked()
150 			it->it_pending = 0;  in timer_delete_locked()
151 			mutex_exit(&it->it_mutex);  in timer_delete_locked()
155 			mutex_exit(&it->it_mutex);  in timer_delete_locked()
167 	if (it->it_pending > 0) {  in timer_delete_locked()
168 		it->it_sigq->sq_func = NULL;  in timer_delete_locked()
170 		kmem_free(it->it_sigq, sizeof (sigqueue_t));  in timer_delete_locked()
173 	ASSERT(it->it_blockers == 0);  in timer_delete_locked()
174 	kmem_cache_free(clock_timer_cache, it);  in timer_delete_locked()
202 	itimer_t **itp, *it;  in timer_grab()  local
209 	if ((itp = p->p_itimer) == NULL || (it = itp[tid]) == NULL) {  in timer_grab()
214 	timer_lock(p, it);  in timer_grab()
216 	if (it->it_lock & ITLK_REMOVE) {  in timer_grab()
220 		timer_unlock(p, it);  in timer_grab()
227 	return (it);  in timer_grab()
236 timer_release(proc_t *p, itimer_t *it)  in timer_release()  argument
239 	timer_unlock(p, it);  in timer_release()
249 timer_delete_grabbed(proc_t *p, timer_t tid, itimer_t *it)  in timer_delete_grabbed()  argument
252 	timer_delete_locked(p, tid, it);  in timer_delete_grabbed()
383 	itimer_t *it = (itimer_t *)sigq->sq_backptr;  in timer_signal()  local
391 	mutex_enter(&it->it_mutex);  in timer_signal()
392 	ASSERT(it->it_pending > 0);  in timer_signal()
393 	it->it_overrun = it->it_pending - 1;  in timer_signal()
394 	it->it_pending = 0;  in timer_signal()
395 	mutex_exit(&it->it_mutex);  in timer_signal()
402 timer_fire(itimer_t *it)  in timer_fire()  argument
407 	if (it->it_flags & IT_SIGNAL) {  in timer_fire()
415 		p = it->it_proc;  in timer_fire()
436 	mutex_enter(&it->it_mutex);  in timer_fire()
438 	if (it->it_pending > 0) {  in timer_fire()
439 		if (it->it_pending < INT_MAX)  in timer_fire()
440 			it->it_pending++;  in timer_fire()
441 		mutex_exit(&it->it_mutex);  in timer_fire()
443 		if (it->it_flags & IT_PORT) {  in timer_fire()
444 			it->it_pending = 1;  in timer_fire()
445 			port_send_event((port_kevent_t *)it->it_portev);  in timer_fire()
446 			mutex_exit(&it->it_mutex);  in timer_fire()
447 		} else if (it->it_flags & IT_SIGNAL) {  in timer_fire()
448 			it->it_pending = 1;  in timer_fire()
449 			mutex_exit(&it->it_mutex);  in timer_fire()
450 			sigaddqa(p, NULL, it->it_sigq);  in timer_fire()
452 			mutex_exit(&it->it_mutex);  in timer_fire()
466 	itimer_t *it, **itp;  in timer_create()  local
544 	it = kmem_cache_alloc(clock_timer_cache, KM_SLEEP);  in timer_create()
545 	bzero(it, sizeof (itimer_t));  in timer_create()
546 	mutex_init(&it->it_mutex, NULL, MUTEX_DEFAULT, NULL);  in timer_create()
579 		kmem_cache_free(clock_timer_cache, it);  in timer_create()
603 	sigq->sq_backptr = it;  in timer_create()
604 	it->it_sigq = sigq;  in timer_create()
605 	it->it_backend = backend;  in timer_create()
606 	it->it_lock = ITLK_LOCKED;  in timer_create()
607 	itp[i] = it;  in timer_create()
631 		it->it_flags |= IT_PORT;  in timer_create()
636 		    (port_source_t **)&it->it_portsrc, timer_close_port,  in timer_create()
637 		    (void *)it, NULL);  in timer_create()
641 			kmem_cache_free(clock_timer_cache, it);  in timer_create()
651 			    (port_source_t *)it->it_portsrc);  in timer_create()
654 			kmem_cache_free(clock_timer_cache, it);  in timer_create()
661 		    timer_port_callback, it);  in timer_create()
662 		it->it_portev = pkevp;  in timer_create()
663 		it->it_portfd = port;  in timer_create()
666 			it->it_flags |= IT_SIGNAL;  in timer_create()
675 	if ((error = backend->clk_timer_create(it, &ev)) != 0)  in timer_create()
678 	it->it_lwp = ttolwp(curthread);  in timer_create()
679 	it->it_proc = p;  in timer_create()
690 	timer_release(p, it);  in timer_create()
701 	ASSERT(!(it->it_lock & ITLK_REMOVE));  in timer_create()
702 	timer_delete_grabbed(p, i, it);  in timer_create()
711 	itimer_t *it;  in timer_gettime()  local
715 	if ((it = timer_grab(p, tid)) == NULL)  in timer_gettime()
718 	error = it->it_backend->clk_timer_gettime(it, &when);  in timer_gettime()
720 	timer_release(p, it);  in timer_gettime()
746 	itimer_t *it;  in timer_settime()  local
773 	if ((it = timer_grab(p, tid)) == NULL)  in timer_settime()
776 	error = it->it_backend->clk_timer_settime(it, flags, &when);  in timer_settime()
778 	timer_release(p, it);  in timer_settime()
787 	itimer_t *it;  in timer_delete()  local
789 	if ((it = timer_grab(p, tid)) == NULL)  in timer_delete()
792 	timer_delete_grabbed(p, tid, it);  in timer_delete()
802 	itimer_t *it;  in timer_getoverrun()  local
804 	if ((it = timer_grab(p, tid)) == NULL)  in timer_getoverrun()
812 	overrun = it->it_overrun;  in timer_getoverrun()
815 	timer_release(p, it);  in timer_getoverrun()
829 	itimer_t *it, **itp;  in timer_lwpexit()  local
837 		if ((it = itp[i]) == NULL)  in timer_lwpexit()
840 		timer_lock(p, it);  in timer_lwpexit()
842 		if ((it->it_lock & ITLK_REMOVE) || it->it_lwp != lwp) {  in timer_lwpexit()
847 			timer_unlock(p, it);  in timer_lwpexit()
858 		it->it_lwp = NULL;  in timer_lwpexit()
859 		timer_unlock(p, it);  in timer_lwpexit()
873 	itimer_t *it, **itp;  in timer_lwpbind()  local
881 		if ((it = itp[i]) == NULL)  in timer_lwpbind()
884 		timer_lock(p, it);  in timer_lwpbind()
886 		if (!(it->it_lock & ITLK_REMOVE) && it->it_lwp == lwp) {  in timer_lwpbind()
891 			it->it_backend->clk_timer_lwpbind(it);  in timer_lwpbind()
895 		timer_unlock(p, it);  in timer_lwpbind()
928 	itimer_t	*it = arg;  in timer_port_callback()  local
930 	mutex_enter(&it->it_mutex);  in timer_port_callback()
931 	if (curproc != it->it_proc) {  in timer_port_callback()
933 		mutex_exit(&it->it_mutex);  in timer_port_callback()
936 	*events = it->it_pending;	/* 1 = 1 event, >1 # of overflows */  in timer_port_callback()
937 	it->it_pending = 0;		/* reinit overflow counter	*/  in timer_port_callback()
948 	mutex_exit(&it->it_mutex);  in timer_port_callback()
966 	itimer_t	*it;  in timer_close_port()  local
969 		if ((it = timer_grab(p, tid)) == NULL)  in timer_close_port()
971 		if (it->it_portev) {  in timer_close_port()
972 			mutex_enter(&it->it_mutex);  in timer_close_port()
973 			if (it->it_portfd == port) {  in timer_close_port()
975 				pev = (port_kevent_t *)it->it_portev;  in timer_close_port()
976 				it->it_portev = NULL;  in timer_close_port()
977 				it->it_flags &= ~IT_PORT;  in timer_close_port()
978 				mutex_exit(&it->it_mutex);  in timer_close_port()
982 				mutex_exit(&it->it_mutex);  in timer_close_port()
985 		timer_release(p, it);  in timer_close_port()