void ContextLifecycleNotifier::notifyStoppingActiveDOMObjects()
{
TemporaryChange<IterationType> scope(m_iterating, IteratingOverAll);
Vector<UntracedMember<ContextLifecycleObserver>> snapshotOfObservers;
copyToVector(m_observers, snapshotOfObservers);
for (ContextLifecycleObserver* observer : snapshotOfObservers) {
// It's possible that the ActiveDOMObject is already destructed.
// See a FIXME above.
if (m_observers.contains(observer)) {
if (observer->observerType() != ContextLifecycleObserver::ActiveDOMObjectType)
continue;
ActiveDOMObject* activeDOMObject = static_cast<ActiveDOMObject*>(observer);
#if DCHECK_IS_ON()
DCHECK_EQ(activeDOMObject->getExecutionContext(), context());
DCHECK(activeDOMObject->suspendIfNeededCalled());
#endif
activeDOMObject->stop();
}
}
}
void ContextLifecycleNotifier::notifyResumingActiveDOMObjects()
{
TemporaryChange<IterationType> scope(m_iterating, IteratingOverAll);
Vector<UntracedMember<ContextLifecycleObserver>> snapshotOfObservers;
copyToVector(m_observers, snapshotOfObservers);
for (ContextLifecycleObserver* observer : snapshotOfObservers) {
// FIXME: Oilpan: At the moment, it's possible that a ActiveDOMObject
// observer is destructed while iterating. Once we enable Oilpan by default
// for all LifecycleObserver<T>s, we can remove the hack by making m_observers
// a HeapHashSet<WeakMember<LifecycleObserver<T>>>.
// (i.e., we can just iterate m_observers without taking a snapshot).
// For more details, see https://codereview.chromium.org/247253002/.
if (m_observers.contains(observer)) {
if (observer->observerType() != ContextLifecycleObserver::ActiveDOMObjectType)
continue;
ActiveDOMObject* activeDOMObject = static_cast<ActiveDOMObject*>(observer);
#if DCHECK_IS_ON()
DCHECK_EQ(activeDOMObject->getExecutionContext(), context());
DCHECK(activeDOMObject->suspendIfNeededCalled());
#endif
activeDOMObject->resume();
}
}
}