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27 #ifndef WorkerThread_h
28 #define WorkerThread_h
30 #include "core/frame/csp/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"
39 class WebWaitableEvent;
45 class NotificationClient;
46 class WorkerGlobalScope;
47 class WorkerLoaderProxy;
48 class WorkerReportingProxy;
49 class WorkerThreadStartupData;
51 enum WorkerThreadStartMode { DontPauseWorkerGlobalScopeOnStart, PauseWorkerGlobalScopeOnStart };
53 class WorkerThread : public RefCounted<WorkerThread> {
55 virtual ~WorkerThread();
60 // Can be used to wait for this worker thread to shut down.
61 // (This is signalled on the main thread, so it's assumed to be waited on the worker context thread)
62 blink::WebWaitableEvent* shutdownEvent() { return m_shutdownEvent.get(); }
64 bool isCurrentThread() const;
65 WorkerRunLoop& runLoop() { return m_runLoop; }
66 WorkerLoaderProxy& workerLoaderProxy() const { return m_workerLoaderProxy; }
67 WorkerReportingProxy& workerReportingProxy() const { return m_workerReportingProxy; }
69 // Number of active worker threads.
70 static unsigned workerThreadCount();
72 NotificationClient* getNotificationClient() { return m_notificationClient; }
73 void setNotificationClient(NotificationClient* client) { m_notificationClient = client; }
76 WorkerThread(WorkerLoaderProxy&, WorkerReportingProxy&, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData>);
78 // Factory method for creating a new worker context for the thread.
79 virtual PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScope(PassOwnPtrWillBeRawPtr<WorkerThreadStartupData>) = 0;
81 // Executes the event loop for the worker thread. Derived classes can override to perform actions before/after entering the event loop.
82 virtual void runEventLoop();
84 WorkerGlobalScope* workerGlobalScope() { return m_workerGlobalScope.get(); }
87 // Static function executed as the core routine on the new thread. Passed a pointer to a WorkerThread object.
88 static void workerThreadStart(void*);
92 ThreadIdentifier m_threadID;
93 WorkerRunLoop m_runLoop;
94 WorkerLoaderProxy& m_workerLoaderProxy;
95 WorkerReportingProxy& m_workerReportingProxy;
97 RefPtrWillBePersistent<WorkerGlobalScope> m_workerGlobalScope;
98 Mutex m_threadCreationMutex;
100 OwnPtrWillBePersistent<WorkerThreadStartupData> m_startupData;
102 NotificationClient* m_notificationClient;
104 // Used to signal thread shutdown.
105 OwnPtr<blink::WebWaitableEvent> m_shutdownEvent;
108 } // namespace WebCore
110 #endif // WorkerThread_h