void ThreadTimers::sharedTimerFiredInternal()
{
// Do a re-entrancy check.
if (m_firingTimers)
return;
m_firingTimers = true;
m_pendingSharedTimerFireTime = 0;
double fireTime = monotonicallyIncreasingTime();
double timeToQuit = fireTime + maxDurationOfFiringTimers;
while (!m_timerHeap.isEmpty() && m_timerHeap.first()->m_nextFireTime <= fireTime) {
TimerBase* timer = m_timerHeap.first();
timer->m_nextFireTime = 0;
timer->m_unalignedNextFireTime = 0;
timer->heapDeleteMin();
double interval = timer->repeatInterval();
timer->setNextFireTime(interval ? fireTime + interval : 0);
// Once the timer has been fired, it may be deleted, so do nothing else with it after this point.
timer->fired();
// Catch the case where the timer asked timers to fire in a nested event loop, or we are over time limit.
if (!m_firingTimers || timeToQuit < monotonicallyIncreasingTime())
break;
}
m_firingTimers = false;
updateSharedTimer();
}
void TimerBase::fireTimers(double fireTime, const Vector<TimerBase*>& firingTimers)
{
int size = firingTimers.size();
for (int i = 0; i != size; ++i) {
TimerBase* timer = firingTimers[i];
// If not in the set, this timer has been deleted or re-scheduled in another timer's fired function.
// So either we don't want to fire it at all or we will fire it next time the shared timer goes off.
// It might even have been deleted; that's OK because we won't do anything else with the pointer.
if (!timersReadyToFire->contains(timer))
continue;
// Setting the next fire time has a side effect of removing the timer from the firing timers set.
double interval = timer->repeatInterval();
timer->setNextFireTime(interval ? fireTime + interval : 0);
// Once the timer has been fired, it may be deleted, so do nothing else with it after this point.
timer->fired();
// Catch the case where the timer asked timers to fire in a nested event loop.
if (!timersReadyToFire)
break;
}
}