static void
destroy(isc__timer_t *timer) {
isc__timermgr_t *manager = timer->manager;
/*
* The caller must ensure it is safe to destroy the timer.
*/
LOCK(&manager->lock);
(void)isc_task_purgerange(timer->task,
timer,
ISC_TIMEREVENT_FIRSTEVENT,
ISC_TIMEREVENT_LASTEVENT,
NULL);
deschedule(timer);
UNLINK(manager->timers, timer, link);
UNLOCK(&manager->lock);
isc_task_detach(&timer->task);
DESTROYLOCK(&timer->lock);
timer->common.impmagic = 0;
timer->common.magic = 0;
isc_mem_put(manager->mctx, timer, sizeof(*timer));
}
unsigned int
isc_task_purge(isc_task_t *task, void *sender, isc_eventtype_t type,
void *tag)
{
/*
* Purge events from a task's event queue.
*/
XTRACE("isc_task_purge");
return (isc_task_purgerange(task, sender, type, type, tag));
}
ISC_TIMERFUNC_SCOPE isc_result_t
isc__timer_reset(isc_timer_t *timer0, isc_timertype_t type,
isc_time_t *expires, isc_interval_t *interval,
isc_boolean_t purge)
{
isc__timer_t *timer = (isc__timer_t *)timer0;
isc_time_t now;
isc__timermgr_t *manager;
isc_result_t result;
/*
* Change the timer's type, expires, and interval values to the given
* values. If 'purge' is ISC_TRUE, any pending events from this timer
* are purged from its task's event queue.
*/
REQUIRE(VALID_TIMER(timer));
manager = timer->manager;
REQUIRE(VALID_MANAGER(manager));
if (expires == NULL)
expires = isc_time_epoch;
if (interval == NULL)
interval = isc_interval_zero;
REQUIRE(type == isc_timertype_inactive ||
!(isc_time_isepoch(expires) && isc_interval_iszero(interval)));
REQUIRE(type != isc_timertype_limited ||
!(isc_time_isepoch(expires) || isc_interval_iszero(interval)));
/*
* Get current time.
*/
if (type != isc_timertype_inactive) {
TIME_NOW(&now);
} else {
/*
* We don't have to do this, but it keeps the compiler from
* complaining about "now" possibly being used without being
* set, even though it will never actually happen.
*/
isc_time_settoepoch(&now);
}
LOCK(&manager->lock);
LOCK(&timer->lock);
if (purge)
(void)isc_task_purgerange(timer->task,
timer,
ISC_TIMEREVENT_FIRSTEVENT,
ISC_TIMEREVENT_LASTEVENT,
NULL);
timer->type = type;
timer->expires = *expires;
timer->interval = *interval;
if (type == isc_timertype_once && !isc_interval_iszero(interval)) {
result = isc_time_add(&now, interval, &timer->idle);
} else {
isc_time_settoepoch(&timer->idle);
result = ISC_R_SUCCESS;
}
if (result == ISC_R_SUCCESS) {
if (type == isc_timertype_inactive) {
deschedule(timer);
result = ISC_R_SUCCESS;
} else
result = schedule(timer, &now, ISC_TRUE);
}
UNLOCK(&timer->lock);
UNLOCK(&manager->lock);
return (result);
}
int
main(int argc, char *argv[]) {
isc_taskmgr_t *manager = NULL;
isc_task_t *t1 = NULL, *t2 = NULL;
isc_task_t *t3 = NULL, *t4 = NULL;
isc_event_t *event;
unsigned int workers;
isc_timermgr_t *timgr;
isc_timer_t *ti1, *ti2;
struct isc_interval interval;
if (argc > 1) {
workers = atoi(argv[1]);
if (workers < 1)
workers = 1;
if (workers > 8192)
workers = 8192;
} else
workers = 2;
printf("%d workers\n", workers);
RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_taskmgr_create(mctx, workers, 0, &manager) ==
ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_create(manager, 0, &t1) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_create(manager, 0, &t2) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_create(manager, 0, &t3) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_create(manager, 0, &t4) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_onshutdown(t1, my_shutdown, "1") ==
ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_onshutdown(t2, my_shutdown, "2") ==
ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_onshutdown(t3, my_shutdown, "3") ==
ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_onshutdown(t4, my_shutdown, "4") ==
ISC_R_SUCCESS);
timgr = NULL;
RUNTIME_CHECK(isc_timermgr_create(mctx, &timgr) == ISC_R_SUCCESS);
ti1 = NULL;
isc_interval_set(&interval, 1, 0);
RUNTIME_CHECK(isc_timer_create(timgr, isc_timertype_ticker, NULL,
&interval, t1, my_tick, "foo", &ti1) ==
ISC_R_SUCCESS);
ti2 = NULL;
isc_interval_set(&interval, 1, 0);
RUNTIME_CHECK(isc_timer_create(timgr, isc_timertype_ticker, NULL,
&interval, t2, my_tick, "bar", &ti2) ==
ISC_R_SUCCESS);
printf("task 1 = %p\n", t1);
printf("task 2 = %p\n", t2);
sleep(2);
/*
* Note: (void *)1 is used as a sender here, since some compilers
* don't like casting a function pointer to a (void *).
*
* In a real use, it is more likely the sender would be a
* structure (socket, timer, task, etc) but this is just a test
* program.
*/
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "1",
sizeof(*event));
isc_task_send(t1, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "2",
sizeof(*event));
isc_task_send(t2, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "3",
sizeof(*event));
isc_task_send(t3, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "4",
sizeof(*event));
isc_task_send(t4, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "2",
sizeof(*event));
isc_task_send(t2, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "3",
sizeof(*event));
isc_task_send(t3, &event);
event = isc_event_allocate(mctx, (void *)1, 1, my_callback, "4",
sizeof(*event));
isc_task_send(t4, &event);
isc_task_purgerange(t3,
NULL,
ISC_EVENTTYPE_FIRSTEVENT,
ISC_EVENTTYPE_LASTEVENT, NULL);
isc_task_detach(&t1);
isc_task_detach(&t2);
isc_task_detach(&t3);
isc_task_detach(&t4);
sleep(10);
printf("destroy\n");
isc_timer_detach(&ti1);
isc_timer_detach(&ti2);
isc_timermgr_destroy(&timgr);
isc_taskmgr_destroy(&manager);
printf("destroyed\n");
isc_mem_stats(mctx, stdout);
isc_mem_destroy(&mctx);
return (0);
}