osfmk/kern/mk_timer.c

62 	mk_timer_t			timer;
68 	timer = (mk_timer_t)zalloc(mk_timer_zone);
69 	if (timer == NULL)
78 		zfree(mk_timer_zone, timer);
83 	simple_lock_init(&timer->lock, 0);
84 	thread_call_setup(&timer->call_entry, mk_timer_expire, timer);
85 	timer->is_armed = timer->is_dead = FALSE;
86 	timer->active = 0;
88 	timer->port = port;
89 	ipc_kobject_set_atomically(port, (ipc_kobject_t)timer, IKOT_TIMER);
102 	mk_timer_t			timer = NULL;
106 		timer = (mk_timer_t)port->ip_kobject;
107 		assert(timer != NULL);
109 		simple_lock(&timer->lock);
110 		assert(timer->port == port);
114 	if (timer != NULL) {
115 		if (thread_call_cancel(&timer->call_entry))
116 			timer->active--;
117 		timer->is_armed = FALSE;
119 		timer->is_dead = TRUE;
120 		if (timer->active == 0) {
121 			simple_unlock(&timer->lock);
122 			zfree(mk_timer_zone, timer);
128 		simple_unlock(&timer->lock);
149 	mk_timer_t			timer = p0;
152 	simple_lock(&timer->lock);
154 	if (timer->active > 1) {
155 		timer->active--;
156 		simple_unlock(&timer->lock);
160 	port = timer->port;
162 	assert(timer->active == 1);
164 	while (timer->is_armed && timer->active == 1) {
167 		timer->is_armed = FALSE;
168 		simple_unlock(&timer->lock);
179 		simple_lock(&timer->lock);
182 	if (--timer->active == 0 && timer->is_dead) {
183 		simple_unlock(&timer->lock);
184 		zfree(mk_timer_zone, timer);
190 	simple_unlock(&timer->lock);
194  * mk_timer_destroy_trap: Destroy the Mach port associated with a timer
231  * mk_timer_arm_trap: Start (arm) a timer
236  *               args->expire_time        Time when timer expires
249 	mk_timer_t			timer;
259 		timer = (mk_timer_t)port->ip_kobject;
260 		assert(timer != NULL);
261 		simple_lock(&timer->lock);
262 		assert(timer->port == port);
265 		if (!timer->is_dead) {
266 			timer->is_armed = TRUE;
268 			if (!thread_call_enter_delayed(&timer->call_entry, expire_time))
269 				timer->active++;
272 		simple_unlock(&timer->lock);
283  * mk_timer_cancel_trap: Cancel a timer
288  *               args->result_time        The armed time of the cancelled timer (return value)
302 	mk_timer_t			timer;
312 		timer = (mk_timer_t)port->ip_kobject;
313 		assert(timer != NULL);
314 		simple_lock(&timer->lock);
315 		assert(timer->port == port);
318 		if (timer->is_armed) {
319 			armed_time = timer->call_entry.tc_call.deadline;
320 			if (thread_call_cancel(&timer->call_entry))
321 				timer->active--;
322 			timer->is_armed = FALSE;
325 		simple_unlock(&timer->lock);