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1 /* | 1 /* |
2 Copyright (C) 2012 Google Inc. All rights reserved. | 2 Copyright (C) 2012 Google 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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25 #ifndef Canvas2DLayerManager_h | 25 #ifndef Canvas2DLayerManager_h |
26 #define Canvas2DLayerManager_h | 26 #define Canvas2DLayerManager_h |
27 | 27 |
28 #include "platform/graphics/Canvas2DLayerBridge.h" | 28 #include "platform/graphics/Canvas2DLayerBridge.h" |
29 #include "public/platform/WebThread.h" | 29 #include "public/platform/WebThread.h" |
30 | 30 |
31 class Canvas2DLayerManagerTest; | 31 class Canvas2DLayerManagerTest; |
32 | 32 |
33 namespace blink { | 33 namespace blink { |
34 | 34 |
35 class PLATFORM_EXPORT Canvas2DLayerManager : public blink::WebThread::TaskObserv
er { | 35 class PLATFORM_EXPORT Canvas2DLayerManager : public WebThread::TaskObserver { |
36 public: | 36 public: |
37 static Canvas2DLayerManager& get(); | 37 static Canvas2DLayerManager& get(); |
38 | 38 |
39 void init(size_t maxBytesAllocated, size_t targetBytesAllocated); | 39 void init(size_t maxBytesAllocated, size_t targetBytesAllocated); |
40 virtual ~Canvas2DLayerManager(); | 40 virtual ~Canvas2DLayerManager(); |
41 | 41 |
42 void layerTransientResourceAllocationChanged(Canvas2DLayerBridge*, intptr_t
deltaBytes = 0); | 42 void layerTransientResourceAllocationChanged(Canvas2DLayerBridge*, intptr_t
deltaBytes = 0); |
43 void layerDidDraw(Canvas2DLayerBridge*); | 43 void layerDidDraw(Canvas2DLayerBridge*); |
44 | 44 |
45 bool isInList(Canvas2DLayerBridge*) const; | 45 bool isInList(Canvas2DLayerBridge*) const; |
46 private: | 46 private: |
47 Canvas2DLayerManager(); | 47 Canvas2DLayerManager(); |
48 | 48 |
49 // internal methods | 49 // internal methods |
50 void freeMemoryIfNecessary(); | 50 void freeMemoryIfNecessary(); |
51 void addLayerToList(Canvas2DLayerBridge*); | 51 void addLayerToList(Canvas2DLayerBridge*); |
52 virtual void willProcessTask() OVERRIDE; | 52 virtual void willProcessTask() OVERRIDE; |
53 virtual void didProcessTask() OVERRIDE; | 53 virtual void didProcessTask() OVERRIDE; |
54 | 54 |
55 size_t m_bytesAllocated; | 55 size_t m_bytesAllocated; |
56 size_t m_maxBytesAllocated; | 56 size_t m_maxBytesAllocated; |
57 size_t m_targetBytesAllocated; | 57 size_t m_targetBytesAllocated; |
58 bool m_taskObserverActive; | 58 bool m_taskObserverActive; |
59 DoublyLinkedList<Canvas2DLayerBridge> m_layerList; | 59 DoublyLinkedList<Canvas2DLayerBridge> m_layerList; |
60 | 60 |
61 friend class ::Canvas2DLayerManagerTest; // for unit testing | 61 friend class ::Canvas2DLayerManagerTest; // for unit testing |
62 }; | 62 }; |
63 | 63 |
64 } | 64 } // namespace blink |
65 | 65 |
66 #endif | 66 #endif |
67 | 67 |
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