1 /* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27 #ifndef WorkerThread_h 28 #define WorkerThread_h 29 30 #if ENABLE(WORKERS) 31 32 #include "WorkerRunLoop.h" 33 #include <wtf/OwnPtr.h> 34 #include <wtf/PassRefPtr.h> 35 #include <wtf/RefCounted.h> 36 37 namespace WebCore { 38 39 class KURL; 40 class String; 41 class WorkerContext; 42 class WorkerLoaderProxy; 43 struct WorkerThreadStartupData; 44 45 class WorkerThread : public RefCounted<WorkerThread> { 46 public: 47 virtual ~WorkerThread(); 48 49 bool start(); 50 void stop(); 51 threadID()52 ThreadIdentifier threadID() const { return m_threadID; } runLoop()53 WorkerRunLoop& runLoop() { return m_runLoop; } workerLoaderProxy()54 WorkerLoaderProxy& workerLoaderProxy() const { return m_workerLoaderProxy; } 55 56 protected: 57 WorkerThread(const KURL&, const String& userAgent, const String& sourceCode, WorkerLoaderProxy&); 58 59 // Factory method for creating a new worker context for the thread. 60 virtual PassRefPtr<WorkerContext> createWorkerContext(const KURL& url, const String& userAgent) = 0; 61 62 // Executes the event loop for the worker thread. Derived classes can override to perform actions before/after entering the event loop. 63 virtual void runEventLoop(); 64 workerContext()65 WorkerContext* workerContext() { return m_workerContext.get(); } 66 67 private: 68 // Static function executed as the core routine on the new thread. Passed a pointer to a WorkerThread object. 69 static void* workerThreadStart(void*); 70 void* workerThread(); 71 72 ThreadIdentifier m_threadID; 73 WorkerRunLoop m_runLoop; 74 WorkerLoaderProxy& m_workerLoaderProxy; 75 76 RefPtr<WorkerContext> m_workerContext; 77 Mutex m_threadCreationMutex; 78 79 OwnPtr<WorkerThreadStartupData> m_startupData; 80 }; 81 82 } // namespace WebCore 83 84 #endif // ENABLE(WORKERS) 85 86 #endif // WorkerThread_h 87 88