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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "config.h" | 5 #include "config.h" |
6 #include "modules/compositorworker/CompositorWorkerThread.h" | 6 #include "modules/compositorworker/CompositorWorkerThread.h" |
7 | 7 |
8 #include "bindings/core/v8/V8GCController.h" | |
8 #include "bindings/core/v8/V8Initializer.h" | 9 #include "bindings/core/v8/V8Initializer.h" |
9 #include "core/workers/WorkerObjectProxy.h" | 10 #include "core/workers/WorkerObjectProxy.h" |
10 #include "core/workers/WorkerThreadStartupData.h" | 11 #include "core/workers/WorkerThreadStartupData.h" |
11 #include "modules/compositorworker/CompositorWorkerGlobalScope.h" | 12 #include "modules/compositorworker/CompositorWorkerGlobalScope.h" |
12 #include "modules/compositorworker/CompositorWorkerManager.h" | 13 #include "platform/ThreadSafeFunctional.h" |
14 #include "platform/TraceEvent.h" | |
13 #include "public/platform/Platform.h" | 15 #include "public/platform/Platform.h" |
14 | 16 |
15 namespace blink { | 17 namespace blink { |
16 | 18 |
19 namespace { | |
20 | |
21 void destroyThread(WebThreadSupportingGC* thread) | |
22 { | |
haraken
2015/12/03 05:19:31
It would be helpful to add ASSERT(isMainThread())
yhirano
2016/02/02 06:38:20
Hi haraken@, I wanna understand the comment. Is th
haraken
2016/02/02 07:07:56
Good point. A blocking operation happens in the We
| |
23 delete thread; | |
24 } | |
25 | |
26 class CompositorWorkerSharedState { | |
27 public: | |
28 static CompositorWorkerSharedState& instance() | |
29 { | |
30 AtomicallyInitializedStaticReference(CompositorWorkerSharedState, compos itorWorkerSharedState, (new CompositorWorkerSharedState())); | |
31 return compositorWorkerSharedState; | |
32 } | |
33 | |
34 WebThreadSupportingGC* compositorWorkerThread() | |
35 { | |
36 MutexLocker lock(m_mutex); | |
37 if (!m_thread && isMainThread()) { | |
38 ASSERT(!m_workerCount); | |
39 WebThread* platformThread = Platform::current()->compositorThread(); | |
40 m_thread = WebThreadSupportingGC::createForThread(platformThread); | |
41 } | |
42 return m_thread.get(); | |
43 } | |
44 | |
45 void initializeBackingThread() | |
46 { | |
47 MutexLocker lock(m_mutex); | |
48 ASSERT(m_thread->isCurrentThread()); | |
49 ++m_workerCount; | |
50 if (m_workerCount > 1) | |
51 return; | |
52 | |
53 m_thread->initialize(); | |
54 | |
55 // Initialize the isolate at the same time. | |
56 ASSERT(!m_isolate); | |
57 m_isolate = V8PerIsolateData::initialize(); | |
58 V8Initializer::initializeWorker(m_isolate); | |
59 | |
60 OwnPtr<V8IsolateInterruptor> interruptor = adoptPtr(new V8IsolateInterru ptor(m_isolate)); | |
61 ThreadState::current()->addInterruptor(interruptor.release()); | |
62 ThreadState::current()->registerTraceDOMWrappers(m_isolate, V8GCControll er::traceDOMWrappers); | |
63 } | |
64 | |
65 void shutdownBackingThread() | |
66 { | |
67 MutexLocker lock(m_mutex); | |
68 ASSERT(m_thread->isCurrentThread()); | |
69 ASSERT(m_workerCount > 0); | |
70 --m_workerCount; | |
71 if (m_workerCount == 0) { | |
72 m_thread->shutdown(); | |
73 Platform::current()->mainThread()->taskRunner()->postTask( | |
74 BLINK_FROM_HERE, threadSafeBind(destroyThread, AllowCrossThreadA ccess(m_thread.leakPtr()))); | |
75 } | |
76 } | |
77 | |
78 v8::Isolate* initializeIsolate() | |
79 { | |
80 MutexLocker lock(m_mutex); | |
81 ASSERT(m_thread->isCurrentThread()); | |
82 ASSERT(m_isolate); | |
83 // It is safe to use the existing isolate even if TerminateExecution() h as been | |
84 // called on it, without calling CancelTerminateExecution(). | |
85 return m_isolate; | |
86 } | |
87 | |
88 void willDestroyIsolate() | |
89 { | |
90 MutexLocker lock(m_mutex); | |
91 ASSERT(m_thread->isCurrentThread()); | |
92 if (m_workerCount == 1) | |
93 V8PerIsolateData::willBeDestroyed(m_isolate); | |
94 } | |
95 | |
96 void destroyIsolate() | |
97 { | |
98 MutexLocker lock(m_mutex); | |
99 if (!m_thread) { | |
100 ASSERT(m_workerCount == 0); | |
101 V8PerIsolateData::destroy(m_isolate); | |
102 m_isolate = nullptr; | |
103 } | |
104 } | |
105 | |
106 void terminateV8Execution() | |
107 { | |
108 MutexLocker lock(m_mutex); | |
109 ASSERT(isMainThread()); | |
110 if (m_workerCount > 1) | |
111 return; | |
112 | |
113 v8::V8::TerminateExecution(m_isolate); | |
114 } | |
115 | |
116 bool hasThreadForTest() | |
117 { | |
118 return m_thread; | |
119 } | |
120 | |
121 bool hasIsolateForTest() | |
122 { | |
123 return m_isolate; | |
124 } | |
125 | |
126 private: | |
127 CompositorWorkerSharedState() {} | |
128 ~CompositorWorkerSharedState() {} | |
129 | |
130 Mutex m_mutex; | |
131 OwnPtr<WebThreadSupportingGC> m_thread; | |
132 int m_workerCount = 0; | |
133 v8::Isolate* m_isolate = nullptr; | |
134 }; | |
135 | |
136 } // namespace | |
137 | |
17 PassRefPtr<CompositorWorkerThread> CompositorWorkerThread::create(PassRefPtr<Wor kerLoaderProxy> workerLoaderProxy, WorkerObjectProxy& workerObjectProxy, double timeOrigin) | 138 PassRefPtr<CompositorWorkerThread> CompositorWorkerThread::create(PassRefPtr<Wor kerLoaderProxy> workerLoaderProxy, WorkerObjectProxy& workerObjectProxy, double timeOrigin) |
18 { | 139 { |
140 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "CompositorWork erThread::create"); | |
19 ASSERT(isMainThread()); | 141 ASSERT(isMainThread()); |
20 return adoptRef(new CompositorWorkerThread(workerLoaderProxy, workerObjectPr oxy, timeOrigin)); | 142 return adoptRef(new CompositorWorkerThread(workerLoaderProxy, workerObjectPr oxy, timeOrigin)); |
21 } | 143 } |
22 | 144 |
23 CompositorWorkerThread::CompositorWorkerThread(PassRefPtr<WorkerLoaderProxy> wor kerLoaderProxy, WorkerObjectProxy& workerObjectProxy, double timeOrigin) | 145 CompositorWorkerThread::CompositorWorkerThread(PassRefPtr<WorkerLoaderProxy> wor kerLoaderProxy, WorkerObjectProxy& workerObjectProxy, double timeOrigin) |
24 : WorkerThread(workerLoaderProxy, workerObjectProxy) | 146 : WorkerThread(workerLoaderProxy, workerObjectProxy) |
25 , m_workerObjectProxy(workerObjectProxy) | 147 , m_workerObjectProxy(workerObjectProxy) |
26 , m_timeOrigin(timeOrigin) | 148 , m_timeOrigin(timeOrigin) |
27 { | 149 { |
28 } | 150 } |
29 | 151 |
30 CompositorWorkerThread::~CompositorWorkerThread() | 152 CompositorWorkerThread::~CompositorWorkerThread() |
31 { | 153 { |
32 } | 154 } |
33 | 155 |
156 WebThreadSupportingGC* CompositorWorkerThread::sharedBackingThread() | |
157 { | |
158 return CompositorWorkerSharedState::instance().compositorWorkerThread(); | |
159 } | |
160 | |
34 PassRefPtrWillBeRawPtr<WorkerGlobalScope> CompositorWorkerThread::createWorkerGl obalScope(PassOwnPtr<WorkerThreadStartupData> startupData) | 161 PassRefPtrWillBeRawPtr<WorkerGlobalScope> CompositorWorkerThread::createWorkerGl obalScope(PassOwnPtr<WorkerThreadStartupData> startupData) |
35 { | 162 { |
163 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "CompositorWork erThread::createWorkerGlobalScope"); | |
36 return CompositorWorkerGlobalScope::create(this, startupData, m_timeOrigin); | 164 return CompositorWorkerGlobalScope::create(this, startupData, m_timeOrigin); |
37 } | 165 } |
38 | 166 |
39 WebThreadSupportingGC& CompositorWorkerThread::backingThread() | 167 WebThreadSupportingGC& CompositorWorkerThread::backingThread() |
40 { | 168 { |
41 return CompositorWorkerManager::instance()->compositorWorkerThread(); | 169 return *CompositorWorkerSharedState::instance().compositorWorkerThread(); |
42 } | 170 } |
43 | 171 |
44 void CompositorWorkerThread::initializeBackingThread() | 172 void CompositorWorkerThread::initializeBackingThread() |
45 { | 173 { |
46 CompositorWorkerManager::instance()->initializeBackingThread(); | 174 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "CompositorWork erThread::initializeBackingThread"); |
175 CompositorWorkerSharedState::instance().initializeBackingThread(); | |
47 } | 176 } |
48 | 177 |
49 void CompositorWorkerThread::shutdownBackingThread() | 178 void CompositorWorkerThread::shutdownBackingThread() |
50 { | 179 { |
51 CompositorWorkerManager::instance()->shutdownBackingThread(); | 180 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "CompositorWork erThread::shutdownBackingThread"); |
181 CompositorWorkerSharedState::instance().shutdownBackingThread(); | |
52 } | 182 } |
53 | 183 |
54 v8::Isolate* CompositorWorkerThread::initializeIsolate() | 184 v8::Isolate* CompositorWorkerThread::initializeIsolate() |
55 { | 185 { |
56 return CompositorWorkerManager::instance()->initializeIsolate(); | 186 return CompositorWorkerSharedState::instance().initializeIsolate(); |
57 } | 187 } |
58 | 188 |
59 void CompositorWorkerThread::willDestroyIsolate() | 189 void CompositorWorkerThread::willDestroyIsolate() |
60 { | 190 { |
61 CompositorWorkerManager::instance()->willDestroyIsolate(); | 191 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "CompositorWork erThread::willDestroyIsolate"); |
192 CompositorWorkerSharedState::instance().willDestroyIsolate(); | |
62 } | 193 } |
63 | 194 |
64 void CompositorWorkerThread::destroyIsolate() | 195 void CompositorWorkerThread::destroyIsolate() |
65 { | 196 { |
66 CompositorWorkerManager::instance()->destroyIsolate(); | 197 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "CompositorWork erThread::destroyIsolate"); |
198 CompositorWorkerSharedState::instance().destroyIsolate(); | |
67 } | 199 } |
68 | 200 |
69 void CompositorWorkerThread::terminateV8Execution() | 201 void CompositorWorkerThread::terminateV8Execution() |
70 { | 202 { |
71 CompositorWorkerManager::instance()->terminateV8Execution(); | 203 TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("compositor-worker"), "CompositorWork erThread::terminateV8Execution"); |
204 CompositorWorkerSharedState::instance().terminateV8Execution(); | |
205 } | |
206 | |
207 bool CompositorWorkerThread::hasThreadForTest() | |
208 { | |
209 return CompositorWorkerSharedState::instance().hasThreadForTest(); | |
210 } | |
211 | |
212 bool CompositorWorkerThread::hasIsolateForTest() | |
213 { | |
214 return CompositorWorkerSharedState::instance().hasIsolateForTest(); | |
72 } | 215 } |
73 | 216 |
74 } // namespace blink | 217 } // namespace blink |
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