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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 * | 24 * |
25 */ | 25 */ |
26 | 26 |
27 #ifndef WorkerThread_h | 27 #ifndef WorkerThread_h |
28 #define WorkerThread_h | 28 #define WorkerThread_h |
29 | 29 |
30 #include "core/dom/ExecutionContextTask.h" | 30 #include "core/dom/ExecutionContextTask.h" |
31 #include "core/frame/csp/ContentSecurityPolicy.h" | 31 #include "core/frame/csp/ContentSecurityPolicy.h" |
32 #include "core/workers/WorkerGlobalScope.h" | 32 #include "core/workers/WorkerGlobalScope.h" |
| 33 #include "core/workers/WorkerLoaderProxy.h" |
33 #include "platform/SharedTimer.h" | 34 #include "platform/SharedTimer.h" |
34 #include "platform/WebThreadSupportingGC.h" | 35 #include "platform/WebThreadSupportingGC.h" |
35 #include "platform/weborigin/SecurityOrigin.h" | 36 #include "platform/weborigin/SecurityOrigin.h" |
36 #include "wtf/Forward.h" | 37 #include "wtf/Forward.h" |
37 #include "wtf/MessageQueue.h" | 38 #include "wtf/MessageQueue.h" |
38 #include "wtf/OwnPtr.h" | 39 #include "wtf/OwnPtr.h" |
39 #include "wtf/PassRefPtr.h" | 40 #include "wtf/PassRefPtr.h" |
40 #include "wtf/RefCounted.h" | 41 #include "wtf/RefCounted.h" |
41 | 42 |
42 namespace blink { | 43 namespace blink { |
43 | 44 |
44 class WebWaitableEvent; | 45 class WebWaitableEvent; |
45 class WorkerGlobalScope; | 46 class WorkerGlobalScope; |
46 class WorkerInspectorController; | 47 class WorkerInspectorController; |
47 class WorkerLoaderProxy; | |
48 class WorkerReportingProxy; | 48 class WorkerReportingProxy; |
49 class WorkerSharedTimer; | 49 class WorkerSharedTimer; |
50 class WorkerThreadShutdownFinishTask; | 50 class WorkerThreadShutdownFinishTask; |
51 class WorkerThreadStartupData; | 51 class WorkerThreadStartupData; |
52 class WorkerThreadTask; | 52 class WorkerThreadTask; |
53 | 53 |
54 enum WorkerThreadStartMode { | 54 enum WorkerThreadStartMode { |
55 DontPauseWorkerGlobalScopeOnStart, | 55 DontPauseWorkerGlobalScopeOnStart, |
56 PauseWorkerGlobalScopeOnStart | 56 PauseWorkerGlobalScopeOnStart |
57 }; | 57 }; |
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68 | 68 |
69 // Can be used to wait for this worker thread to shut down. | 69 // Can be used to wait for this worker thread to shut down. |
70 // (This is signalled on the main thread, so it's assumed to be waited on th
e worker context thread) | 70 // (This is signalled on the main thread, so it's assumed to be waited on th
e worker context thread) |
71 WebWaitableEvent* shutdownEvent() { return m_shutdownEvent.get(); } | 71 WebWaitableEvent* shutdownEvent() { return m_shutdownEvent.get(); } |
72 | 72 |
73 WebWaitableEvent* terminationEvent() { return m_terminationEvent.get(); } | 73 WebWaitableEvent* terminationEvent() { return m_terminationEvent.get(); } |
74 void terminateAndWait(); | 74 void terminateAndWait(); |
75 static void terminateAndWaitForAllWorkers(); | 75 static void terminateAndWaitForAllWorkers(); |
76 | 76 |
77 bool isCurrentThread() const; | 77 bool isCurrentThread() const; |
78 WorkerLoaderProxy& workerLoaderProxy() const { return m_workerLoaderProxy; } | 78 WorkerLoaderProxy* workerLoaderProxy() const |
| 79 { |
| 80 RELEASE_ASSERT(m_workerLoaderProxy); |
| 81 return m_workerLoaderProxy.get(); |
| 82 } |
| 83 |
79 WorkerReportingProxy& workerReportingProxy() const { return m_workerReportin
gProxy; } | 84 WorkerReportingProxy& workerReportingProxy() const { return m_workerReportin
gProxy; } |
80 | 85 |
81 void postTask(PassOwnPtr<ExecutionContextTask>); | 86 void postTask(PassOwnPtr<ExecutionContextTask>); |
82 void postDebuggerTask(PassOwnPtr<ExecutionContextTask>); | 87 void postDebuggerTask(PassOwnPtr<ExecutionContextTask>); |
83 | 88 |
84 enum WaitMode { WaitForMessage, DontWaitForMessage }; | 89 enum WaitMode { WaitForMessage, DontWaitForMessage }; |
85 MessageQueueWaitResult runDebuggerTask(WaitMode = WaitForMessage); | 90 MessageQueueWaitResult runDebuggerTask(WaitMode = WaitForMessage); |
86 | 91 |
87 // These methods should be called if the holder of the thread is | 92 // These methods should be called if the holder of the thread is |
88 // going to call runDebuggerTask in a loop. | 93 // going to call runDebuggerTask in a loop. |
89 void willEnterNestedLoop(); | 94 void willEnterNestedLoop(); |
90 void didLeaveNestedLoop(); | 95 void didLeaveNestedLoop(); |
91 | 96 |
92 WorkerGlobalScope* workerGlobalScope() const { return m_workerGlobalScope.ge
t(); } | 97 WorkerGlobalScope* workerGlobalScope() const { return m_workerGlobalScope.ge
t(); } |
93 bool terminated(); | 98 bool terminated(); |
94 | 99 |
95 // Number of active worker threads. | 100 // Number of active worker threads. |
96 static unsigned workerThreadCount(); | 101 static unsigned workerThreadCount(); |
97 | 102 |
98 PlatformThreadId platformThreadId() const; | 103 PlatformThreadId platformThreadId() const; |
99 | 104 |
100 void interruptAndDispatchInspectorCommands(); | 105 void interruptAndDispatchInspectorCommands(); |
101 void setWorkerInspectorController(WorkerInspectorController*); | 106 void setWorkerInspectorController(WorkerInspectorController*); |
102 | 107 |
103 protected: | 108 protected: |
104 WorkerThread(WorkerLoaderProxy&, WorkerReportingProxy&, PassOwnPtrWillBeRawP
tr<WorkerThreadStartupData>); | 109 WorkerThread(PassRefPtr<WorkerLoaderProxy>, WorkerReportingProxy&, PassOwnPt
rWillBeRawPtr<WorkerThreadStartupData>); |
105 | 110 |
106 // Factory method for creating a new worker context for the thread. | 111 // Factory method for creating a new worker context for the thread. |
107 virtual PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScope(Pa
ssOwnPtrWillBeRawPtr<WorkerThreadStartupData>) = 0; | 112 virtual PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScope(Pa
ssOwnPtrWillBeRawPtr<WorkerThreadStartupData>) = 0; |
108 | 113 |
109 virtual void postInitialize() { } | 114 virtual void postInitialize() { } |
110 | 115 |
111 private: | 116 private: |
112 friend class WorkerSharedTimer; | 117 friend class WorkerSharedTimer; |
113 friend class WorkerThreadShutdownFinishTask; | 118 friend class WorkerThreadShutdownFinishTask; |
114 | 119 |
115 void stopInShutdownSequence(); | 120 void stopInShutdownSequence(); |
116 void stopInternal(); | 121 void stopInternal(); |
117 | 122 |
118 void initialize(); | 123 void initialize(); |
119 void cleanup(); | 124 void cleanup(); |
120 void idleHandler(); | 125 void idleHandler(); |
121 void postDelayedTask(PassOwnPtr<ExecutionContextTask>, long long delayMs); | 126 void postDelayedTask(PassOwnPtr<ExecutionContextTask>, long long delayMs); |
122 | 127 |
123 bool m_terminated; | 128 bool m_terminated; |
124 OwnPtr<WorkerSharedTimer> m_sharedTimer; | 129 OwnPtr<WorkerSharedTimer> m_sharedTimer; |
125 MessageQueue<WorkerThreadTask> m_debuggerMessageQueue; | 130 MessageQueue<WorkerThreadTask> m_debuggerMessageQueue; |
126 OwnPtr<WebThread::TaskObserver> m_microtaskRunner; | 131 OwnPtr<WebThread::TaskObserver> m_microtaskRunner; |
127 | 132 |
128 WorkerLoaderProxy& m_workerLoaderProxy; | 133 RefPtr<WorkerLoaderProxy> m_workerLoaderProxy; |
129 WorkerReportingProxy& m_workerReportingProxy; | 134 WorkerReportingProxy& m_workerReportingProxy; |
130 | 135 |
131 RefPtrWillBePersistent<WorkerInspectorController> m_workerInspectorControlle
r; | 136 RefPtrWillBePersistent<WorkerInspectorController> m_workerInspectorControlle
r; |
132 Mutex m_workerInspectorControllerMutex; | 137 Mutex m_workerInspectorControllerMutex; |
133 | 138 |
134 Mutex m_threadCreationMutex; | 139 Mutex m_threadCreationMutex; |
135 RefPtrWillBePersistent<WorkerGlobalScope> m_workerGlobalScope; | 140 RefPtrWillBePersistent<WorkerGlobalScope> m_workerGlobalScope; |
136 OwnPtrWillBePersistent<WorkerThreadStartupData> m_startupData; | 141 OwnPtrWillBePersistent<WorkerThreadStartupData> m_startupData; |
137 | 142 |
138 // Used to signal thread shutdown. | 143 // Used to signal thread shutdown. |
139 OwnPtr<WebWaitableEvent> m_shutdownEvent; | 144 OwnPtr<WebWaitableEvent> m_shutdownEvent; |
140 | 145 |
141 // Used to signal thread termination. | 146 // Used to signal thread termination. |
142 OwnPtr<WebWaitableEvent> m_terminationEvent; | 147 OwnPtr<WebWaitableEvent> m_terminationEvent; |
143 | 148 |
144 // FIXME: This has to be last because of crbug.com/401397 - the | 149 // FIXME: This has to be last because of crbug.com/401397 - the |
145 // WorkerThread might get deleted before it had a chance to properly | 150 // WorkerThread might get deleted before it had a chance to properly |
146 // shut down. By deleting the WebThread first, we can guarantee that | 151 // shut down. By deleting the WebThread first, we can guarantee that |
147 // no pending tasks on the thread might want to access any of the other | 152 // no pending tasks on the thread might want to access any of the other |
148 // members during the WorkerThread's destruction. | 153 // members during the WorkerThread's destruction. |
149 OwnPtr<WebThreadSupportingGC> m_thread; | 154 OwnPtr<WebThreadSupportingGC> m_thread; |
150 }; | 155 }; |
151 | 156 |
152 } // namespace blink | 157 } // namespace blink |
153 | 158 |
154 #endif // WorkerThread_h | 159 #endif // WorkerThread_h |
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