64 timer_lock(proc_t *p, itimer_t *it)  in timer_lock()  argument
68 	while (it->it_lock & ITLK_LOCKED) {  in timer_lock()
69 		it->it_blockers++;  in timer_lock()
70 		cv_wait(&it->it_cv, &p->p_lock);  in timer_lock()
71 		it->it_blockers--;  in timer_lock()
74 	it->it_lock |= ITLK_LOCKED;  in timer_lock()
83 timer_unlock(proc_t *p, itimer_t *it)  in timer_unlock()  argument
86 	ASSERT(it->it_lock & ITLK_LOCKED);  in timer_unlock()
87 	it->it_lock &= ~ITLK_LOCKED;  in timer_unlock()
88 	cv_signal(&it->it_cv);  in timer_unlock()
104 timer_delete_locked(proc_t *p, timer_t tid, itimer_t *it)  in timer_delete_locked()  argument
107 	ASSERT(!(it->it_lock & ITLK_REMOVE));  in timer_delete_locked()
108 	ASSERT(it->it_lock & ITLK_LOCKED);  in timer_delete_locked()
110 	it->it_lock |= ITLK_REMOVE;  in timer_delete_locked()
118 	while (it->it_blockers) {  in timer_delete_locked()
119 		timer_unlock(p, it);  in timer_delete_locked()
120 		cv_wait(&it->it_cv, &p->p_lock);  in timer_delete_locked()
121 		timer_lock(p, it);  in timer_delete_locked()
124 	ASSERT(p->p_itimer[tid] == it);  in timer_delete_locked()
136 	it->it_backend->clk_timer_delete(it);  in timer_delete_locked()
138 	if (it->it_portev) {  in timer_delete_locked()
139 		mutex_enter(&it->it_mutex);  in timer_delete_locked()
140 		if (it->it_portev) {  in timer_delete_locked()
143 			(void) port_dissociate_ksource(it->it_portfd,  in timer_delete_locked()
144 			    PORT_SOURCE_TIMER, (port_source_t *)it->it_portsrc);  in timer_delete_locked()
145 			pev = (port_kevent_t *)it->it_portev;  in timer_delete_locked()
146 			it->it_portev = NULL;  in timer_delete_locked()
147 			it->it_flags &= ~IT_PORT;  in timer_delete_locked()
148 			it->it_pending = 0;  in timer_delete_locked()
149 			mutex_exit(&it->it_mutex);  in timer_delete_locked()
153 			mutex_exit(&it->it_mutex);  in timer_delete_locked()
165 	if (it->it_pending > 0) {  in timer_delete_locked()
166 		it->it_sigq->sq_func = NULL;  in timer_delete_locked()
168 		kmem_free(it->it_sigq, sizeof (sigqueue_t));  in timer_delete_locked()
171 	ASSERT(it->it_blockers == 0);  in timer_delete_locked()
172 	kmem_cache_free(clock_timer_cache, it);  in timer_delete_locked()
200 	itimer_t **itp, *it;  in timer_grab()  local
207 	if ((itp = p->p_itimer) == NULL || (it = itp[tid]) == NULL) {  in timer_grab()
212 	timer_lock(p, it);  in timer_grab()
214 	if (it->it_lock & ITLK_REMOVE) {  in timer_grab()
218 		timer_unlock(p, it);  in timer_grab()
225 	return (it);  in timer_grab()
234 timer_release(proc_t *p, itimer_t *it)  in timer_release()  argument
237 	timer_unlock(p, it);  in timer_release()
247 timer_delete_grabbed(proc_t *p, timer_t tid, itimer_t *it)  in timer_delete_grabbed()  argument
250 	timer_delete_locked(p, tid, it);  in timer_delete_grabbed()
381 	itimer_t *it = (itimer_t *)sigq->sq_backptr;  in timer_signal()  local
389 	mutex_enter(&it->it_mutex);  in timer_signal()
390 	ASSERT(it->it_pending > 0);  in timer_signal()
391 	it->it_overrun = it->it_pending - 1;  in timer_signal()
392 	it->it_pending = 0;  in timer_signal()
393 	mutex_exit(&it->it_mutex);  in timer_signal()
400 timer_fire(itimer_t *it)  in timer_fire()  argument
405 	if (it->it_flags & IT_SIGNAL) {  in timer_fire()
413 		p = it->it_proc;  in timer_fire()
434 	mutex_enter(&it->it_mutex);  in timer_fire()
436 	if (it->it_pending > 0) {  in timer_fire()
437 		if (it->it_pending < INT_MAX)  in timer_fire()
438 			it->it_pending++;  in timer_fire()
439 		mutex_exit(&it->it_mutex);  in timer_fire()
441 		if (it->it_flags & IT_PORT) {  in timer_fire()
442 			it->it_pending = 1;  in timer_fire()
443 			port_send_event((port_kevent_t *)it->it_portev);  in timer_fire()
444 			mutex_exit(&it->it_mutex);  in timer_fire()
445 		} else if (it->it_flags & IT_SIGNAL) {  in timer_fire()
446 			it->it_pending = 1;  in timer_fire()
447 			mutex_exit(&it->it_mutex);  in timer_fire()
448 			sigaddqa(p, NULL, it->it_sigq);  in timer_fire()
450 			mutex_exit(&it->it_mutex);  in timer_fire()
464 	itimer_t *it, **itp;  in timer_create()  local
542 	it = kmem_cache_alloc(clock_timer_cache, KM_SLEEP);  in timer_create()
543 	bzero(it, sizeof (itimer_t));  in timer_create()
544 	mutex_init(&it->it_mutex, NULL, MUTEX_DEFAULT, NULL);  in timer_create()
577 		kmem_cache_free(clock_timer_cache, it);  in timer_create()
601 	sigq->sq_backptr = it;  in timer_create()
602 	it->it_sigq = sigq;  in timer_create()
603 	it->it_backend = backend;  in timer_create()
604 	it->it_lock = ITLK_LOCKED;  in timer_create()
605 	itp[i] = it;  in timer_create()
629 		it->it_flags |= IT_PORT;  in timer_create()
634 		    (port_source_t **)&it->it_portsrc, timer_close_port,  in timer_create()
635 		    (void *)it, NULL);  in timer_create()
639 			kmem_cache_free(clock_timer_cache, it);  in timer_create()
649 			    (port_source_t *)it->it_portsrc);  in timer_create()
652 			kmem_cache_free(clock_timer_cache, it);  in timer_create()
659 		    timer_port_callback, it);  in timer_create()
660 		it->it_portev = pkevp;  in timer_create()
661 		it->it_portfd = port;  in timer_create()
664 			it->it_flags |= IT_SIGNAL;  in timer_create()
673 	if ((error = backend->clk_timer_create(it, &ev)) != 0)  in timer_create()
676 	it->it_lwp = ttolwp(curthread);  in timer_create()
677 	it->it_proc = p;  in timer_create()
688 	timer_release(p, it);  in timer_create()
699 	ASSERT(!(it->it_lock & ITLK_REMOVE));  in timer_create()
700 	timer_delete_grabbed(p, i, it);  in timer_create()
709 	itimer_t *it;  in timer_gettime()  local
713 	if ((it = timer_grab(p, tid)) == NULL)  in timer_gettime()
716 	error = it->it_backend->clk_timer_gettime(it, &when);  in timer_gettime()
718 	timer_release(p, it);  in timer_gettime()
745 	itimer_t *it;  in timer_settime()  local
772 	if ((it = timer_grab(p, tid)) == NULL)  in timer_settime()
782 	if (it->it_backend->clk_clock_getres(&res) == 0 && res.tv_nsec > 1) {  in timer_settime()
794 	error = it->it_backend->clk_timer_settime(it, flags, &when);  in timer_settime()
796 	timer_release(p, it);  in timer_settime()
805 	itimer_t *it;  in timer_delete()  local
807 	if ((it = timer_grab(p, tid)) == NULL)  in timer_delete()
810 	timer_delete_grabbed(p, tid, it);  in timer_delete()
820 	itimer_t *it;  in timer_getoverrun()  local
822 	if ((it = timer_grab(p, tid)) == NULL)  in timer_getoverrun()
830 	overrun = it->it_overrun;  in timer_getoverrun()
833 	timer_release(p, it);  in timer_getoverrun()
847 	itimer_t *it, **itp;  in timer_lwpexit()  local
855 		if ((it = itp[i]) == NULL)  in timer_lwpexit()
858 		timer_lock(p, it);  in timer_lwpexit()
860 		if ((it->it_lock & ITLK_REMOVE) || it->it_lwp != lwp) {  in timer_lwpexit()
865 			timer_unlock(p, it);  in timer_lwpexit()
876 		it->it_lwp = NULL;  in timer_lwpexit()
877 		timer_unlock(p, it);  in timer_lwpexit()
891 	itimer_t *it, **itp;  in timer_lwpbind()  local
899 		if ((it = itp[i]) == NULL)  in timer_lwpbind()
902 		timer_lock(p, it);  in timer_lwpbind()
904 		if (!(it->it_lock & ITLK_REMOVE) && it->it_lwp == lwp) {  in timer_lwpbind()
909 			it->it_backend->clk_timer_lwpbind(it);  in timer_lwpbind()
913 		timer_unlock(p, it);  in timer_lwpbind()
946 	itimer_t	*it = arg;  in timer_port_callback()  local
948 	mutex_enter(&it->it_mutex);  in timer_port_callback()
949 	if (curproc != it->it_proc) {  in timer_port_callback()
951 		mutex_exit(&it->it_mutex);  in timer_port_callback()
954 	*events = it->it_pending;	/* 1 = 1 event, >1 # of overflows */  in timer_port_callback()
955 	it->it_pending = 0;		/* reinit overflow counter	*/  in timer_port_callback()
966 	mutex_exit(&it->it_mutex);  in timer_port_callback()
984 	itimer_t	*it;  in timer_close_port()  local
987 		if ((it = timer_grab(p, tid)) == NULL)  in timer_close_port()
989 		if (it->it_portev) {  in timer_close_port()
990 			mutex_enter(&it->it_mutex);  in timer_close_port()
991 			if (it->it_portfd == port) {  in timer_close_port()
993 				pev = (port_kevent_t *)it->it_portev;  in timer_close_port()
994 				it->it_portev = NULL;  in timer_close_port()
995 				it->it_flags &= ~IT_PORT;  in timer_close_port()
996 				mutex_exit(&it->it_mutex);  in timer_close_port()
1000 				mutex_exit(&it->it_mutex);  in timer_close_port()
1003 		timer_release(p, it);  in timer_close_port()