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author | Feng Qian <> | 2009-04-10 18:11:29 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-04-10 18:11:29 -0700 |
commit | 8f72e70a9fd78eec56623b3a62e68f16b7b27e28 (patch) | |
tree | 181bf9a400c30a1bf34ea6d72560e8d00111d549 /WebCore/workers/WorkerMessagingProxy.h | |
parent | 7ed56f225e0ade046e1c2178977f72b2d896f196 (diff) | |
download | external_webkit-8f72e70a9fd78eec56623b3a62e68f16b7b27e28.zip external_webkit-8f72e70a9fd78eec56623b3a62e68f16b7b27e28.tar.gz external_webkit-8f72e70a9fd78eec56623b3a62e68f16b7b27e28.tar.bz2 |
AI 145796: Land the WebKit merge @r42026.
Automated import of CL 145796
Diffstat (limited to 'WebCore/workers/WorkerMessagingProxy.h')
-rw-r--r-- | WebCore/workers/WorkerMessagingProxy.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/WebCore/workers/WorkerMessagingProxy.h b/WebCore/workers/WorkerMessagingProxy.h new file mode 100644 index 0000000..8d81deb --- /dev/null +++ b/WebCore/workers/WorkerMessagingProxy.h @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2008 Apple 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: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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. + * + */ + +#ifndef WorkerMessagingProxy_h +#define WorkerMessagingProxy_h + +#if ENABLE(WORKERS) + +#include "ScriptExecutionContext.h" +#include "WorkerContextProxy.h" +#include "WorkerObjectProxy.h" +#include <wtf/Noncopyable.h> +#include <wtf/PassRefPtr.h> +#include <wtf/RefPtr.h> +#include <wtf/Vector.h> + +namespace WebCore { + + class ScriptExecutionContext; + class String; + class Worker; + class WorkerThread; + + class WorkerMessagingProxy : public WorkerContextProxy, public WorkerObjectProxy, Noncopyable { + public: + WorkerMessagingProxy(Worker*); + + // Implementations of WorkerContextProxy. + // (Only use these methods in the worker object thread.) + virtual void startWorkerContext(const KURL& scriptURL, const String& userAgent, const String& sourceCode); + virtual void terminateWorkerContext(); + virtual void postMessageToWorkerContext(const String& message); + virtual bool hasPendingActivity() const; + virtual void workerObjectDestroyed(); + + // Implementations of WorkerObjectProxy. + // (Only use these methods in the worker context thread.) + virtual void postMessageToWorkerObject(const String& message); + virtual void postExceptionToWorkerObject(const String& errorMessage, int lineNumber, const String& sourceURL); + virtual void postConsoleMessageToWorkerObject(MessageDestination, MessageSource, MessageLevel, const String& message, int lineNumber, const String& sourceURL); + virtual void confirmMessageFromWorkerObject(bool hasPendingActivity); + virtual void reportPendingActivity(bool hasPendingActivity); + virtual void workerContextDestroyed(); + + void postTaskToWorkerObject(PassRefPtr<ScriptExecutionContext::Task>); + void postTaskToWorkerContext(PassRefPtr<ScriptExecutionContext::Task>); + void postTaskForModeToWorkerContext(PassRefPtr<ScriptExecutionContext::Task>, const String& mode); + + void workerThreadCreated(PassRefPtr<WorkerThread>); + + // Only use this method on the worker object thread. + bool askedToTerminate() const { return m_askedToTerminate; } + + private: + friend class MessageWorkerTask; + friend class WorkerContextDestroyedTask; + friend class WorkerThreadActivityReportTask; + + virtual ~WorkerMessagingProxy(); + + void workerContextDestroyedInternal(); + void reportPendingActivityInternal(bool confirmingMessage, bool hasPendingActivity); + Worker* workerObject() const { return m_workerObject; } + + RefPtr<ScriptExecutionContext> m_scriptExecutionContext; + Worker* m_workerObject; + RefPtr<WorkerThread> m_workerThread; + + unsigned m_unconfirmedMessageCount; // Unconfirmed messages from worker object to worker thread. + bool m_workerThreadHadPendingActivity; // The latest confirmation from worker thread reported that it was still active. + + bool m_askedToTerminate; + + Vector<RefPtr<ScriptExecutionContext::Task> > m_queuedEarlyTasks; // Tasks are queued here until there's a thread object created. + }; + +} // namespace WebCore + +#endif // ENABLE(WORKERS) + +#endif // WorkerMessagingProxy_h |