void transferHiddenDependency(v8::Handle<v8::Object> object, EventListener* oldValue, v8::Local<v8::Value> newValue, int cacheIndex, v8::Isolate* isolate)
{
if (oldValue) {
V8AbstractEventListener* oldListener = V8AbstractEventListener::cast(oldValue);
if (oldListener) {
v8::Local<v8::Object> oldListenerObject = oldListener->getExistingListenerObject();
if (!oldListenerObject.IsEmpty())
removeHiddenDependency(object, oldListenerObject, cacheIndex, isolate);
}
}
// Non-callable input is treated as null and ignored
if (newValue->IsFunction())
createHiddenDependency(object, newValue, cacheIndex, isolate);
}
void moveEventListenerToNewWrapper(v8::Handle<v8::Object> object, EventListener* oldValue, v8::Local<v8::Value> newValue, int arrayIndex, v8::Isolate* isolate)
{
if (oldValue) {
V8AbstractEventListener* oldListener = V8AbstractEventListener::cast(oldValue);
if (oldListener) {
v8::Local<v8::Object> oldListenerObject = oldListener->getExistingListenerObject();
if (!oldListenerObject.IsEmpty())
removeHiddenValueFromArray(object, oldListenerObject, arrayIndex, isolate);
}
}
// Non-callable input is treated as null and ignored
if (newValue->IsFunction())
addHiddenValueToArray(object, newValue, arrayIndex, isolate);
}
void transferHiddenDependency(v8::Handle<v8::Object> object,
EventListener* oldValue,
v8::Local<v8::Value> newValue,
int cacheIndex)
{
if (oldValue) {
V8AbstractEventListener* oldListener = V8AbstractEventListener::cast(oldValue);
if (oldListener) {
v8::Local<v8::Object> oldListenerObject = oldListener->getExistingListenerObject();
if (!oldListenerObject.IsEmpty())
removeHiddenDependency(object, oldListenerObject, cacheIndex);
}
}
if (!newValue->IsNull() && !newValue->IsUndefined())
createHiddenDependency(object, newValue, cacheIndex);
}
void WorkerGlobalScope::dispose() {
DCHECK(thread()->isCurrentThread());
// Event listeners would keep DOMWrapperWorld objects alive for too long.
// Also, they have references to JS objects, which become dangling once Heap
// is destroyed.
for (auto it = m_eventListeners.begin(); it != m_eventListeners.end();) {
V8AbstractEventListener* listener = *it;
// clearListenerObject() will unregister the listener from
// m_eventListeners, and invalidate the iterator, so we have to advance
// it first.
++it;
listener->clearListenerObject();
}
removeAllEventListeners();
m_scriptController->dispose();
m_scriptController.clear();
m_eventQueue->close();
m_thread = nullptr;
}
static void weakEventListenerCallback(v8::Persistent<v8::Value>, void* parameter)
{
V8AbstractEventListener* listener = static_cast<V8AbstractEventListener*>(parameter);
listener->disposeListenerObject();
}