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/Forward.h> 34 #include <wtf/OwnPtr.h> 35 #include <wtf/PassRefPtr.h> 36 #include <wtf/RefCounted.h> 37 38 namespace WebCore { 39 40 class KURL; 41 class NotificationPresenter; 42 class WorkerContext; 43 class WorkerLoaderProxy; 44 class WorkerReportingProxy; 45 struct WorkerThreadStartupData; 46 47 class WorkerThread : public RefCounted<WorkerThread> { 48 public: 49 virtual ~WorkerThread(); 50 51 bool start(); 52 void stop(); 53 threadID()54 ThreadIdentifier threadID() const { return m_threadID; } runLoop()55 WorkerRunLoop& runLoop() { return m_runLoop; } workerLoaderProxy()56 WorkerLoaderProxy& workerLoaderProxy() const { return m_workerLoaderProxy; } workerReportingProxy()57 WorkerReportingProxy& workerReportingProxy() const { return m_workerReportingProxy; } 58 59 // Number of active worker threads. 60 static unsigned workerThreadCount(); 61 62 #if ENABLE(NOTIFICATIONS) getNotificationPresenter()63 NotificationPresenter* getNotificationPresenter() { return m_notificationPresenter; } setNotificationPresenter(NotificationPresenter * presenter)64 void setNotificationPresenter(NotificationPresenter* presenter) { m_notificationPresenter = presenter; } 65 #endif 66 67 protected: 68 WorkerThread(const KURL&, const String& userAgent, const String& sourceCode, WorkerLoaderProxy&, WorkerReportingProxy&); 69 70 // Factory method for creating a new worker context for the thread. 71 virtual PassRefPtr<WorkerContext> createWorkerContext(const KURL& url, const String& userAgent) = 0; 72 73 // Executes the event loop for the worker thread. Derived classes can override to perform actions before/after entering the event loop. 74 virtual void runEventLoop(); 75 workerContext()76 WorkerContext* workerContext() { return m_workerContext.get(); } 77 78 private: 79 // Static function executed as the core routine on the new thread. Passed a pointer to a WorkerThread object. 80 static void* workerThreadStart(void*); 81 void* workerThread(); 82 83 ThreadIdentifier m_threadID; 84 WorkerRunLoop m_runLoop; 85 WorkerLoaderProxy& m_workerLoaderProxy; 86 WorkerReportingProxy& m_workerReportingProxy; 87 88 RefPtr<WorkerContext> m_workerContext; 89 Mutex m_threadCreationMutex; 90 91 OwnPtr<WorkerThreadStartupData> m_startupData; 92 93 #if ENABLE(NOTIFICATIONS) 94 NotificationPresenter* m_notificationPresenter; 95 #endif 96 97 // Track the number of WorkerThread instances for use in layout tests. 98 static unsigned m_threadCount; 99 }; 100 101 } // namespace WebCore 102 103 #endif // ENABLE(WORKERS) 104 105 #endif // WorkerThread_h 106 107