void visitDOMWrapper(DOMDataStore* store, T* object, v8::Persistent<v8::Object> wrapper) { WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper); if (!S::process(object, wrapper, typeInfo)) { ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper); if (activeDOMObject && activeDOMObject->hasPendingActivity()) wrapper.ClearWeak(); } }
void visitDOMWrapper(DOMDataStore* store, T* object, v8::Persistent<v8::Object> wrapper) { WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper); if (!S::process(object, wrapper, typeInfo)) { ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper); if (activeDOMObject && activeDOMObject->hasPendingActivity()) { ASSERT(!wrapper.IsWeak()); // NOTE: To re-enable weak status of the active object we use // |object| from the map and not |activeDOMObject|. The latter // may be a different pointer (in case ActiveDOMObject is not // the main base class of the object's class) and pointer // identity is required by DOM map functions. wrapper.MakeWeak(object, callback); } } }
void visitDOMWrapper(DOMDataStore* store, void* object, v8::Persistent<v8::Object> wrapper) { WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper); // Additional handling of message port ensuring that entangled ports also // have their wrappers entangled. This should ideally be handled when the // ports are actually entangled in MessagePort::entangle, but to avoid // forking MessagePort.* this is postponed to GC time. Having this postponed // has the drawback that the wrappers are "entangled/unentangled" for each // GC even though their entaglement most likely is still the same. if (V8MessagePort::info.equals(typeInfo)) { // Mark each port as in-use if it's entangled. For simplicity's sake, we assume all ports are remotely entangled, // since the Chromium port implementation can't tell the difference. MessagePort* port1 = static_cast<MessagePort*>(object); if (port1->isEntangled() || port1->hasPendingActivity()) wrapper.ClearWeak(); } else { ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper); if (activeDOMObject && activeDOMObject->hasPendingActivity()) wrapper.ClearWeak(); } }
void visitDOMWrapper(DOMDataStore* store, void* object, v8::Persistent<v8::Object> wrapper) { WrapperTypeInfo* typeInfo = V8DOMWrapper::domWrapperType(wrapper); if (V8MessagePort::info.equals(typeInfo)) { MessagePort* port1 = static_cast<MessagePort*>(object); // We marked this port as reachable in GCPrologueVisitor. Undo this now since the // port could be not reachable in the future if it gets disentangled (and also // GCPrologueVisitor expects to see all handles marked as weak). if ((!wrapper.IsWeak() && !wrapper.IsNearDeath()) || port1->hasPendingActivity()) wrapper.MakeWeak(port1, &DOMDataStore::weakActiveDOMObjectCallback); } else { ActiveDOMObject* activeDOMObject = typeInfo->toActiveDOMObject(wrapper); if (activeDOMObject && activeDOMObject->hasPendingActivity()) { ASSERT(!wrapper.IsWeak()); // NOTE: To re-enable weak status of the active object we use // |object| from the map and not |activeDOMObject|. The latter // may be a different pointer (in case ActiveDOMObject is not // the main base class of the object's class) and pointer // identity is required by DOM map functions. wrapper.MakeWeak(object, &DOMDataStore::weakActiveDOMObjectCallback); } } }