static bool process(void* object, v8::Persistent<v8::Object> wrapper, WrapperTypeInfo* typeInfo)
{
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);
return true;
}
return false;
}
void ObjectWrap::WeakCallback(v8::Isolate* env, v8::Persistent<v8::Value> value, void *data) {
v8::HandleScope scope(V8::avocadoIsolate);
// Get coherence back.
ObjectWrap *obj = static_cast<ObjectWrap *>(data);
// This is us, and GC ran?
assert(value == obj->handle_);
assert(value.IsNearDeath(env));
// Kill this.
delete obj;
}
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);
}
}
}