void MessagePort::postMessage(PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, ExceptionState& exceptionState)
{
if (!isEntangled())
return;
ASSERT(executionContext());
ASSERT(m_entangledChannel);
OwnPtr<MessagePortChannelArray> channels;
// Make sure we aren't connected to any of the passed-in ports.
if (ports) {
for (unsigned i = 0; i < ports->size(); ++i) {
MessagePort* dataPort = (*ports)[i].get();
if (dataPort == this) {
exceptionState.throwDOMException(DataCloneError, "Port at index " + String::number(i) + " contains the source port.");
return;
}
}
channels = MessagePort::disentanglePorts(ports, exceptionState);
if (exceptionState.hadException())
return;
}
blink::WebString messageString = message->toWireString();
OwnPtr<blink::WebMessagePortChannelArray> webChannels = toWebMessagePortChannelArray(channels.release());
m_entangledChannel->postMessage(messageString, webChannels.leakPtr());
}
void MessagePort::close()
{
m_closed = true;
if (!isEntangled())
return;
m_entangledChannel->close();
}
ExceptionOr<void> MessagePort::postMessage(JSC::ExecState& state, JSC::JSValue messageValue, Vector<JSC::Strong<JSC::JSObject>>&& transfer)
{
Vector<RefPtr<MessagePort>> ports;
auto message = SerializedScriptValue::create(state, messageValue, WTFMove(transfer), ports);
if (message.hasException())
return message.releaseException();
if (!isEntangled())
return { };
ASSERT(m_scriptExecutionContext);
std::unique_ptr<MessagePortChannelArray> channels;
// Make sure we aren't connected to any of the passed-in ports.
if (!ports.isEmpty()) {
for (auto& dataPort : ports) {
if (dataPort == this || m_entangledChannel->isConnectedTo(dataPort.get()))
return Exception { DATA_CLONE_ERR };
}
auto disentangleResult = MessagePort::disentanglePorts(WTFMove(ports));
if (disentangleResult.hasException())
return disentangleResult.releaseException();
channels = disentangleResult.releaseReturnValue();
}
m_entangledChannel->postMessageToRemote(message.releaseReturnValue(), WTFMove(channels));
return { };
}
void MessagePort::postMessage(ExecutionContext* context,
PassRefPtr<SerializedScriptValue> message,
const MessagePortArray& ports,
ExceptionState& exceptionState) {
if (!isEntangled())
return;
DCHECK(getExecutionContext());
DCHECK(m_entangledChannel);
// Make sure we aren't connected to any of the passed-in ports.
for (unsigned i = 0; i < ports.size(); ++i) {
if (ports[i] == this) {
exceptionState.throwDOMException(
DataCloneError,
"Port at index " + String::number(i) + " contains the source port.");
return;
}
}
std::unique_ptr<MessagePortChannelArray> channels =
MessagePort::disentanglePorts(context, ports, exceptionState);
if (exceptionState.hadException())
return;
if (message->containsTransferableArrayBuffer())
getExecutionContext()->addConsoleMessage(ConsoleMessage::create(
JSMessageSource, WarningMessageLevel,
"MessagePort cannot send an ArrayBuffer as a transferable object yet. "
"See http://crbug.com/334408"));
WebString messageString = message->toWireString();
std::unique_ptr<WebMessagePortChannelArray> webChannels =
toWebMessagePortChannelArray(std::move(channels));
m_entangledChannel->postMessage(messageString, webChannels.release());
}
bool MessagePort::hasPendingActivity() const {
// The spec says that entangled message ports should always be treated as if
// they have a strong reference.
// We'll also stipulate that the queue needs to be open (if the app drops its
// reference to the port before start()-ing it, then it's not really entangled
// as it's unreachable).
return m_started && isEntangled();
}
bool MessagePort::hasPendingActivity()
{
// The spec says that entangled message ports should always be treated as if they have a strong reference.
// We'll also stipulate that the queue needs to be open (if the app drops its reference to the port before start()-ing it, then it's not really entangled as it's unreachable).
if (m_started && m_entangledChannel && m_entangledChannel->hasPendingActivity())
return true;
if (isEntangled() && !locallyEntangledPort())
return true;
return false;
}
void MessagePort::start()
{
// Do nothing if we've been cloned or closed.
if (!isEntangled())
return;
ASSERT(m_scriptExecutionContext);
if (m_started)
return;
m_started = true;
m_scriptExecutionContext->processMessagePortMessagesSoon();
}
void MessagePort::start()
{
// Do nothing if we've been cloned or closed.
if (!isEntangled())
return;
ASSERT(executionContext());
if (m_started)
return;
m_started = true;
messageAvailable();
}
void MessagePort::start() {
// Do nothing if we've been cloned or closed.
if (!isEntangled())
return;
DCHECK(getExecutionContext());
if (m_started)
return;
m_entangledChannel->setClient(this);
m_started = true;
messageAvailable();
}
void MessagePort::postMessage(RefPtr<SerializedScriptValue>&& message, const MessagePortArray* ports, ExceptionCode& ec)
{
if (!isEntangled())
return;
ASSERT(m_scriptExecutionContext);
std::unique_ptr<MessagePortChannelArray> channels;
// Make sure we aren't connected to any of the passed-in ports.
if (ports) {
for (auto& dataPort : *ports) {
if (dataPort == this || m_entangledChannel->isConnectedTo(dataPort.get())) {
ec = DATA_CLONE_ERR;
return;
}
}
channels = MessagePort::disentanglePorts(ports, ec);
if (ec)
return;
}
m_entangledChannel->postMessageToRemote(WTFMove(message), WTFMove(channels));
}
void MessagePort::postMessage(PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, ExceptionCode& ec)
{
if (!isEntangled())
return;
ASSERT(m_scriptExecutionContext);
std::unique_ptr<MessagePortChannelArray> channels;
// Make sure we aren't connected to any of the passed-in ports.
if (ports) {
for (unsigned int i = 0; i < ports->size(); ++i) {
MessagePort* dataPort = (*ports)[i].get();
if (dataPort == this || m_entangledChannel->isConnectedTo(dataPort)) {
ec = DATA_CLONE_ERR;
return;
}
}
channels = MessagePort::disentanglePorts(ports, ec);
if (ec)
return;
}
m_entangledChannel->postMessageToRemote(message, std::move(channels));
}
void MessagePort::close()
{
if (isEntangled())
m_entangledChannel->close();
m_closed = true;
}
MessagePort::~MessagePort() {
DCHECK(!m_started || !isEntangled());
if (m_scriptStateForConversion)
m_scriptStateForConversion->disposePerContextData();
}
void MessagePort::close() {
if (isEntangled())
m_entangledChannel->setClient(nullptr);
m_closed = true;
}