| /* |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "WebWorkerImpl.h" |
| |
| #include "CrossThreadTask.h" |
| #include "DedicatedWorkerContext.h" |
| #include "DedicatedWorkerThread.h" |
| #include "KURL.h" |
| #include "MessageEvent.h" |
| #include "MessagePort.h" |
| #include "MessagePortChannel.h" |
| #include "ScriptExecutionContext.h" |
| #include "SecurityOrigin.h" |
| #include "SerializedScriptValue.h" |
| #include "SubstituteData.h" |
| #include <wtf/Threading.h> |
| |
| #include "PlatformMessagePortChannel.h" |
| #include "WebMessagePortChannel.h" |
| #include "WebString.h" |
| #include "WebURL.h" |
| #include "WebWorkerClient.h" |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| #if ENABLE(WORKERS) |
| |
| WebWorker* WebWorker::create(WebWorkerClient* client) |
| { |
| return new WebWorkerImpl(client); |
| } |
| |
| |
| WebWorkerImpl::WebWorkerImpl(WebWorkerClient* client) |
| : m_client(client) |
| { |
| } |
| |
| WebWorkerImpl::~WebWorkerImpl() |
| { |
| } |
| |
| WebCommonWorkerClient* WebWorkerImpl::commonClient() |
| { |
| return m_client; |
| } |
| |
| void WebWorkerImpl::postMessageToWorkerContextTask(WebCore::ScriptExecutionContext* context, |
| WebWorkerImpl* thisPtr, |
| const String& message, |
| PassOwnPtr<MessagePortChannelArray> channels) |
| { |
| ASSERT(context->isWorkerContext()); |
| DedicatedWorkerContext* workerContext = |
| static_cast<DedicatedWorkerContext*>(context); |
| |
| OwnPtr<MessagePortArray> ports = |
| MessagePort::entanglePorts(*context, channels); |
| RefPtr<SerializedScriptValue> serializedMessage = |
| SerializedScriptValue::createFromWire(message); |
| workerContext->dispatchEvent(MessageEvent::create( |
| ports.release(), serializedMessage.release())); |
| thisPtr->confirmMessageFromWorkerObject(workerContext->hasPendingActivity()); |
| } |
| |
| // WebWorker ------------------------------------------------------------------- |
| |
| void WebWorkerImpl::startWorkerContext(const WebURL& scriptUrl, |
| const WebString& userAgent, |
| const WebString& sourceCode) |
| { |
| initializeLoader(scriptUrl); |
| setWorkerThread(DedicatedWorkerThread::create(scriptUrl, userAgent, |
| sourceCode, *this, *this)); |
| // Worker initialization means a pending activity. |
| reportPendingActivity(true); |
| workerThread()->start(); |
| } |
| |
| void WebWorkerImpl::terminateWorkerContext() |
| { |
| stopWorkerThread(); |
| } |
| |
| void WebWorkerImpl::postMessageToWorkerContext(const WebString& message, |
| const WebMessagePortChannelArray& webChannels) |
| { |
| OwnPtr<MessagePortChannelArray> channels; |
| if (webChannels.size()) { |
| channels = new MessagePortChannelArray(webChannels.size()); |
| for (size_t i = 0; i < webChannels.size(); ++i) { |
| RefPtr<PlatformMessagePortChannel> platform_channel = |
| PlatformMessagePortChannel::create(webChannels[i]); |
| webChannels[i]->setClient(platform_channel.get()); |
| (*channels)[i] = MessagePortChannel::create(platform_channel); |
| } |
| } |
| |
| workerThread()->runLoop().postTask( |
| createCallbackTask(&postMessageToWorkerContextTask, |
| this, String(message), channels.release())); |
| } |
| |
| void WebWorkerImpl::workerObjectDestroyed() |
| { |
| // Worker object in the renderer was destroyed, perhaps a result of GC. |
| // For us, it's a signal to start terminating the WorkerContext too. |
| // FIXME: when 'kill a worker' html5 spec algorithm is implemented, it |
| // should be used here instead of 'terminate a worker'. |
| terminateWorkerContext(); |
| } |
| |
| void WebWorkerImpl::clientDestroyed() |
| { |
| m_client = 0; |
| } |
| |
| #else |
| |
| WebWorker* WebWorker::create(WebWorkerClient* client) |
| { |
| return 0; |
| } |
| |
| #endif // ENABLE(WORKERS) |
| |
| } // namespace WebKit |