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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CompositorWorkerManager_h | |
6 #define CompositorWorkerManager_h | |
7 | |
8 #include "modules/ModulesExport.h" | |
9 #include "wtf/OwnPtr.h" | |
10 #include "wtf/PassOwnPtr.h" | |
11 #include "wtf/ThreadingPrimitives.h" | |
12 #include <v8.h> | |
13 | |
14 namespace blink { | |
15 | |
16 class V8IsolateInterruptor; | |
17 class WebThread; | |
18 class WebThreadSupportingGC; | |
19 | |
20 class MODULES_EXPORT CompositorWorkerManager final { | |
21 USING_FAST_MALLOC(CompositorWorkerManager); | |
22 public: | |
23 static void initialize(); | |
24 static void shutdown(); | |
25 | |
26 static CompositorWorkerManager* instance(); | |
27 | |
28 // Returns the thread used for compositor workers. This creates a new thread
if a | |
29 // thread doesn't already exist. | |
30 WebThreadSupportingGC& compositorWorkerThread(); | |
31 | |
32 // Attempts to initialize/shutdown a thread if necessary. Does nothing if th
e thread | |
33 // is already initialized, or if the thread has more than one active workers
at the | |
34 // time of shutdown. | |
35 void initializeBackingThread(); | |
36 void shutdownBackingThread(); | |
37 | |
38 v8::Isolate* initializeIsolate(); | |
39 void willDestroyIsolate(); | |
40 void destroyIsolate(); | |
41 void terminateV8Execution(); | |
42 | |
43 private: | |
44 friend class CompositorWorkerManagerTest; | |
45 | |
46 CompositorWorkerManager(); | |
47 ~CompositorWorkerManager(); | |
48 | |
49 Mutex m_mutex; | |
50 OwnPtr<WebThreadSupportingGC> m_thread; | |
51 OwnPtr<WebThread> m_platformThread; | |
52 int m_workerCount = 0; | |
53 v8::Isolate* m_isolate = nullptr; | |
54 }; | |
55 | |
56 } // namespace blink | |
57 | |
58 #endif // CompositorWorkerManager_h | |
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