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 #include "core/frame/ContentSecurityPolicy.h" 31 #include "core/workers/WorkerRunLoop.h" 32 #include "platform/weborigin/SecurityOrigin.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 NotificationClient; 42 class WorkerGlobalScope; 43 class WorkerLoaderProxy; 44 class WorkerReportingProxy; 45 struct WorkerThreadStartupData; 46 47 enum WorkerThreadStartMode { DontPauseWorkerGlobalScopeOnStart, PauseWorkerGlobalScopeOnStart }; 48 49 class WorkerThread : public RefCounted<WorkerThread> { 50 public: 51 virtual ~WorkerThread(); 52 53 bool start(); 54 void stop(); 55 56 bool isCurrentThread() const; runLoop()57 WorkerRunLoop& runLoop() { return m_runLoop; } workerLoaderProxy()58 WorkerLoaderProxy& workerLoaderProxy() const { return m_workerLoaderProxy; } workerReportingProxy()59 WorkerReportingProxy& workerReportingProxy() const { return m_workerReportingProxy; } 60 61 // Number of active worker threads. 62 static unsigned workerThreadCount(); 63 static void releaseFastMallocFreeMemoryInAllThreads(); 64 getNotificationClient()65 NotificationClient* getNotificationClient() { return m_notificationClient; } setNotificationClient(NotificationClient * client)66 void setNotificationClient(NotificationClient* client) { m_notificationClient = client; } 67 68 protected: 69 WorkerThread(WorkerLoaderProxy&, WorkerReportingProxy&, PassOwnPtr<WorkerThreadStartupData>); 70 71 // Factory method for creating a new worker context for the thread. 72 virtual PassRefPtr<WorkerGlobalScope> createWorkerGlobalScope(PassOwnPtr<WorkerThreadStartupData>) = 0; 73 74 // Executes the event loop for the worker thread. Derived classes can override to perform actions before/after entering the event loop. 75 virtual void runEventLoop(); 76 workerGlobalScope()77 WorkerGlobalScope* workerGlobalScope() { return m_workerGlobalScope.get(); } 78 79 private: 80 // Static function executed as the core routine on the new thread. Passed a pointer to a WorkerThread object. 81 static void workerThreadStart(void*); 82 83 void workerThread(); 84 85 ThreadIdentifier m_threadID; 86 WorkerRunLoop m_runLoop; 87 WorkerLoaderProxy& m_workerLoaderProxy; 88 WorkerReportingProxy& m_workerReportingProxy; 89 90 RefPtr<WorkerGlobalScope> m_workerGlobalScope; 91 Mutex m_threadCreationMutex; 92 93 OwnPtr<WorkerThreadStartupData> m_startupData; 94 95 NotificationClient* m_notificationClient; 96 }; 97 98 } // namespace WebCore 99 100 #endif // WorkerThread_h 101