Function event_timer_callback

lib_acl/src/event/events_wmsg.c:751–811

}

static VOID CALLBACK event_timer_callback(HWND hwnd, UINT uMsg,
	UINT_PTR idEvent, DWORD dwTime)
{
	const char *myname = "event_timer_callback";
	EVENT_WMSG *ev = get_hwnd_event(hwnd);
	ACL_EVENT *eventp;
	EVENT_TIMER *timer;
	ACL_EVENT_NOTIFY_TIME timer_fn;
	void    *timer_arg;

	if (ev == NULL) {
		acl_msg_fatal("%s(%d): ev null", myname, __LINE__);
	}
	if (ev->tid != idEvent) {
		acl_msg_fatal("%s(%d): ev->tid(%u) != idEvent(%u)",
			myname, __LINE__, (unsigned int) ev->tid,
			(unsigned int) idEvent);
	}

	eventp = &ev->event;
	SET_TIME(eventp->present);

	while ((timer = FIRST_TIMER(&eventp->timer_head)) != 0) {
		if (timer->when > eventp->present)
			break;
		timer_fn  = timer->callback;
		timer_arg = timer->context;

		/* �����ʱ����ʱ���� > 0 ��������ʱ����ѭ�����ã��������趨ʱ�� */
		if (timer->delay > 0 && timer->keep) {
			timer->ncount++;
			eventp->timer_request(eventp, timer->callback,
				timer->context, timer->delay, timer->keep);
		} else {
			acl_ring_detach(&timer->ring);		/* first this */
			timer->nrefer--;
			if (timer->nrefer != 0) {
				acl_msg_fatal("%s(%d): nrefer(%d) != 0",
					myname, __LINE__, timer->nrefer);
			}
			acl_myfree(timer);
		}
		timer_fn(ACL_EVENT_TIME, eventp, timer_arg);
	}

	if ((timer = FIRST_TIMER(&eventp->timer_head)) == 0) {
		KillTimer(hwnd, idEvent);
		ev->timer_active = 0;
	} else {
		int  delay;

		SET_TIME(eventp->present);
		delay = (int) (timer->when - eventp->present + 999) / 1000;

		/* Ҫ��ʱ�䶨ʱ���ļ�������� 1 ���� */
		if (delay < 1000) {
			delay = 1000;
		}