Function modTimersExecute

modules/base/timer/mc/timer.c:51–102

static modTimer gTimers = NULL;

void modTimersExecute(void)
{
	modCriticalSectionDeclare;
	uint32_t now = modMilliseconds();
	modTimer walker;
#if MOD_TASKS
	uintptr_t task = modTaskGetCurrent();
#endif

	// determine who is firing this time (timers added during this call are ineligible)
	modCriticalSectionBegin();
	for (walker = gTimers; NULL != walker; walker = walker->next) {
		if (walker->flags & (kTimerFlagUnscheduled | kTimerFlagFire))
			continue;
		int32_t delta = walker->triggerTime - now;
		if (delta <= 0)
			walker->flags |= kTimerFlagFire;
	}

	// service eligible callbacks. then reschedule (repeating) or remove (one shot)
	for (walker = gTimers; NULL != walker; ) {
		if (!(walker->flags & kTimerFlagFire)
#if MOD_TASKS
			|| (task != walker->task)
#endif
			) {
			walker = walker->next;
			continue;
		}

		walker->flags &= ~kTimerFlagFire;
		walker->triggerTime += walker->repeatInterval;		// non-drifting... OK?

		walker->useCount++;
		modCriticalSectionEnd();
		(walker->cb)(walker, walker->refcon, walker->refconSize);
		modCriticalSectionBegin();
		walker->useCount--;

		if ((walker->useCount <= 0) || (0 == walker->repeatInterval)) {
			modCriticalSectionEnd();
			modTimerRemove(walker);
			modCriticalSectionBegin();
			walker = gTimers;
			continue;
		}

		walker = walker->next;
	}

	modCriticalSectionEnd();
}

int modTimersNext(void)
{