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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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33 #include "platform/SharedTimer.h" | 33 #include "platform/SharedTimer.h" |
34 #include "platform/WebThreadSupportingGC.h" | 34 #include "platform/WebThreadSupportingGC.h" |
35 #include "platform/weborigin/SecurityOrigin.h" | 35 #include "platform/weborigin/SecurityOrigin.h" |
36 #include "wtf/Forward.h" | 36 #include "wtf/Forward.h" |
37 #include "wtf/MessageQueue.h" | 37 #include "wtf/MessageQueue.h" |
38 #include "wtf/OwnPtr.h" | 38 #include "wtf/OwnPtr.h" |
39 #include "wtf/PassRefPtr.h" | 39 #include "wtf/PassRefPtr.h" |
40 #include "wtf/RefCounted.h" | 40 #include "wtf/RefCounted.h" |
41 | 41 |
42 namespace blink { | 42 namespace blink { |
| 43 |
| 44 class KURL; |
43 class WebWaitableEvent; | 45 class WebWaitableEvent; |
44 } | 46 class WorkerGlobalScope; |
| 47 class WorkerInspectorController; |
| 48 class WorkerLoaderProxy; |
| 49 class WorkerReportingProxy; |
| 50 class WorkerSharedTimer; |
| 51 class WorkerThreadShutdownFinishTask; |
| 52 class WorkerThreadStartupData; |
| 53 class WorkerThreadTask; |
45 | 54 |
46 namespace blink { | 55 enum WorkerThreadStartMode { |
| 56 DontPauseWorkerGlobalScopeOnStart, |
| 57 PauseWorkerGlobalScopeOnStart |
| 58 }; |
47 | 59 |
48 class KURL; | 60 class WorkerThread : public RefCounted<WorkerThread> { |
49 class WorkerGlobalScope; | 61 public: |
50 class WorkerInspectorController; | 62 virtual ~WorkerThread(); |
51 class WorkerLoaderProxy; | |
52 class WorkerReportingProxy; | |
53 class WorkerSharedTimer; | |
54 class WorkerThreadShutdownFinishTask; | |
55 class WorkerThreadStartupData; | |
56 class WorkerThreadTask; | |
57 | 63 |
58 enum WorkerThreadStartMode { DontPauseWorkerGlobalScopeOnStart, PauseWorkerG
lobalScopeOnStart }; | 64 virtual void start(); |
| 65 virtual void stop(); |
59 | 66 |
| 67 // Can be used to wait for this worker thread to shut down. |
| 68 // (This is signalled on the main thread, so it's assumed to be waited on th
e worker context thread) |
| 69 WebWaitableEvent* shutdownEvent() { return m_shutdownEvent.get(); } |
60 | 70 |
61 class WorkerThread : public RefCounted<WorkerThread> { | 71 WebWaitableEvent* terminationEvent() { return m_terminationEvent.get(); } |
62 public: | 72 static void terminateAndWaitForAllWorkers(); |
63 virtual ~WorkerThread(); | |
64 | 73 |
65 virtual void start(); | 74 bool isCurrentThread() const; |
66 virtual void stop(); | 75 WorkerLoaderProxy& workerLoaderProxy() const { return m_workerLoaderProxy; } |
| 76 WorkerReportingProxy& workerReportingProxy() const { return m_workerReportin
gProxy; } |
67 | 77 |
68 // Can be used to wait for this worker thread to shut down. | 78 void postTask(PassOwnPtr<ExecutionContextTask>); |
69 // (This is signalled on the main thread, so it's assumed to be waited o
n the worker context thread) | 79 void postDebuggerTask(PassOwnPtr<ExecutionContextTask>); |
70 blink::WebWaitableEvent* shutdownEvent() { return m_shutdownEvent.get();
} | |
71 | 80 |
72 blink::WebWaitableEvent* terminationEvent() { return m_terminationEvent.
get(); } | 81 enum WaitMode { WaitForMessage, DontWaitForMessage }; |
73 static void terminateAndWaitForAllWorkers(); | 82 MessageQueueWaitResult runDebuggerTask(WaitMode = WaitForMessage); |
74 | 83 |
75 bool isCurrentThread() const; | 84 // These methods should be called if the holder of the thread is |
76 WorkerLoaderProxy& workerLoaderProxy() const { return m_workerLoaderProx
y; } | 85 // going to call runDebuggerTask in a loop. |
77 WorkerReportingProxy& workerReportingProxy() const { return m_workerRepo
rtingProxy; } | 86 void willEnterNestedLoop(); |
| 87 void didLeaveNestedLoop(); |
78 | 88 |
79 void postTask(PassOwnPtr<ExecutionContextTask>); | 89 WorkerGlobalScope* workerGlobalScope() const { return m_workerGlobalScope.ge
t(); } |
80 void postDebuggerTask(PassOwnPtr<ExecutionContextTask>); | 90 bool terminated(); |
81 | 91 |
82 enum WaitMode { WaitForMessage, DontWaitForMessage }; | 92 // Number of active worker threads. |
83 MessageQueueWaitResult runDebuggerTask(WaitMode = WaitForMessage); | 93 static unsigned workerThreadCount(); |
84 | 94 |
85 // These methods should be called if the holder of the thread is | 95 PlatformThreadId platformThreadId() const; |
86 // going to call runDebuggerTask in a loop. | |
87 void willEnterNestedLoop(); | |
88 void didLeaveNestedLoop(); | |
89 | 96 |
90 WorkerGlobalScope* workerGlobalScope() const { return m_workerGlobalScop
e.get(); } | 97 void interruptAndDispatchInspectorCommands(); |
91 bool terminated(); | 98 void setWorkerInspectorController(WorkerInspectorController*); |
92 | 99 |
93 // Number of active worker threads. | 100 protected: |
94 static unsigned workerThreadCount(); | 101 WorkerThread(WorkerLoaderProxy&, WorkerReportingProxy&, PassOwnPtrWillBeRawP
tr<WorkerThreadStartupData>); |
95 | 102 |
96 PlatformThreadId platformThreadId() const; | 103 // Factory method for creating a new worker context for the thread. |
| 104 virtual PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScope(Pa
ssOwnPtrWillBeRawPtr<WorkerThreadStartupData>) = 0; |
97 | 105 |
98 void interruptAndDispatchInspectorCommands(); | 106 virtual void postInitialize() { } |
99 void setWorkerInspectorController(WorkerInspectorController*); | |
100 | 107 |
101 protected: | 108 private: |
102 WorkerThread(WorkerLoaderProxy&, WorkerReportingProxy&, PassOwnPtrWillBe
RawPtr<WorkerThreadStartupData>); | 109 friend class WorkerSharedTimer; |
| 110 friend class WorkerThreadShutdownFinishTask; |
103 | 111 |
104 // Factory method for creating a new worker context for the thread. | 112 void stopInShutdownSequence(); |
105 virtual PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScop
e(PassOwnPtrWillBeRawPtr<WorkerThreadStartupData>) = 0; | 113 void stopInternal(); |
106 | 114 |
107 virtual void postInitialize() { } | 115 void initialize(); |
| 116 void cleanup(); |
| 117 void idleHandler(); |
| 118 void postDelayedTask(PassOwnPtr<ExecutionContextTask>, long long delayMs); |
108 | 119 |
109 private: | 120 bool m_terminated; |
110 friend class WorkerSharedTimer; | 121 OwnPtr<WorkerSharedTimer> m_sharedTimer; |
111 friend class WorkerThreadShutdownFinishTask; | 122 MessageQueue<WorkerThreadTask> m_debuggerMessageQueue; |
| 123 OwnPtr<WebThread::TaskObserver> m_microtaskRunner; |
112 | 124 |
113 void stopInShutdownSequence(); | 125 WorkerLoaderProxy& m_workerLoaderProxy; |
114 void stopInternal(); | 126 WorkerReportingProxy& m_workerReportingProxy; |
115 | 127 |
116 void initialize(); | 128 RefPtrWillBePersistent<WorkerInspectorController> m_workerInspectorControlle
r; |
117 void cleanup(); | 129 Mutex m_workerInspectorControllerMutex; |
118 void idleHandler(); | |
119 void postDelayedTask(PassOwnPtr<ExecutionContextTask>, long long delayMs
); | |
120 | 130 |
121 bool m_terminated; | 131 Mutex m_threadCreationMutex; |
122 OwnPtr<WorkerSharedTimer> m_sharedTimer; | 132 RefPtrWillBePersistent<WorkerGlobalScope> m_workerGlobalScope; |
123 MessageQueue<WorkerThreadTask> m_debuggerMessageQueue; | 133 OwnPtrWillBePersistent<WorkerThreadStartupData> m_startupData; |
124 OwnPtr<WebThread::TaskObserver> m_microtaskRunner; | |
125 | 134 |
126 WorkerLoaderProxy& m_workerLoaderProxy; | 135 // Used to signal thread shutdown. |
127 WorkerReportingProxy& m_workerReportingProxy; | 136 OwnPtr<WebWaitableEvent> m_shutdownEvent; |
128 | 137 |
129 RefPtrWillBePersistent<WorkerInspectorController> m_workerInspectorContr
oller; | 138 // Used to signal thread termination. |
130 Mutex m_workerInspectorControllerMutex; | 139 OwnPtr<WebWaitableEvent> m_terminationEvent; |
131 | 140 |
132 Mutex m_threadCreationMutex; | 141 // FIXME: This has to be last because of crbug.com/401397 - the |
133 RefPtrWillBePersistent<WorkerGlobalScope> m_workerGlobalScope; | 142 // WorkerThread might get deleted before it had a chance to properly |
134 OwnPtrWillBePersistent<WorkerThreadStartupData> m_startupData; | 143 // shut down. By deleting the WebThread first, we can guarantee that |
135 | 144 // no pending tasks on the thread might want to access any of the other |
136 // Used to signal thread shutdown. | 145 // members during the WorkerThread's destruction. |
137 OwnPtr<blink::WebWaitableEvent> m_shutdownEvent; | 146 OwnPtr<WebThreadSupportingGC> m_thread; |
138 | 147 }; |
139 // Used to signal thread termination. | |
140 OwnPtr<blink::WebWaitableEvent> m_terminationEvent; | |
141 | |
142 // FIXME: This has to be last because of crbug.com/401397 - the | |
143 // WorkerThread might get deleted before it had a chance to properly | |
144 // shut down. By deleting the WebThread first, we can guarantee that | |
145 // no pending tasks on the thread might want to access any of the other | |
146 // members during the WorkerThread's destruction. | |
147 OwnPtr<WebThreadSupportingGC> m_thread; | |
148 }; | |
149 | 148 |
150 } // namespace blink | 149 } // namespace blink |
151 | 150 |
152 #endif // WorkerThread_h | 151 #endif // WorkerThread_h |
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