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);
}
}
}