bool MessagePort::tryGetMessage(
RefPtr<SerializedScriptValue>& message,
std::unique_ptr<MessagePortChannelArray>& channels) {
if (!m_entangledChannel)
return false;
return tryGetMessageFrom(*m_entangledChannel, message, channels);
}
void MessagePort::dispatchMessages()
{
// Messages for contexts that are not fully active get dispatched too, but JSAbstractEventListener::handleEvent() doesn't call handlers for these.
// The HTML5 spec specifies that any messages sent to a document that is not fully active should be dropped, so this behavior is OK.
if (!started())
return;
RefPtr<SerializedScriptValue> message;
OwnPtr<MessagePortChannelArray> channels;
while (m_entangledChannel && tryGetMessageFrom(*m_entangledChannel, message, channels)) {
// close() in Worker onmessage handler should prevent next message from dispatching.
if (executionContext()->isWorkerGlobalScope() && toWorkerGlobalScope(executionContext())->isClosing())
return;
OwnPtr<MessagePortArray> ports = MessagePort::entanglePorts(*executionContext(), channels.release());
RefPtrWillBeRawPtr<Event> evt = MessageEvent::create(ports.release(), message.release());
dispatchEvent(evt.release(), ASSERT_NO_EXCEPTION);
}
}
