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comparison: gfx/layers/ipc/CompositorChild.h
gfx/layers/ipc/CompositorChild.h
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- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:dc025e5c929f |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set sw=2 ts=8 et tw=80 : */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef mozilla_layers_CompositorChild_h | |
| 8 #define mozilla_layers_CompositorChild_h | |
| 9 | |
| 10 #include "base/basictypes.h" // for DISALLOW_EVIL_CONSTRUCTORS | |
| 11 #include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2 | |
| 12 #include "mozilla/Attributes.h" // for MOZ_OVERRIDE | |
| 13 #include "mozilla/ipc/ProtocolUtils.h" | |
| 14 #include "mozilla/layers/PCompositorChild.h" | |
| 15 #include "nsAutoPtr.h" // for nsRefPtr | |
| 16 #include "nsClassHashtable.h" // for nsClassHashtable | |
| 17 #include "nsCOMPtr.h" // for nsCOMPtr | |
| 18 #include "nsHashKeys.h" // for nsUint64HashKey | |
| 19 #include "nsISupportsImpl.h" // for NS_INLINE_DECL_REFCOUNTING | |
| 20 | |
| 21 class nsIObserver; | |
| 22 | |
| 23 namespace mozilla { | |
| 24 namespace layers { | |
| 25 | |
| 26 class ClientLayerManager; | |
| 27 class CompositorParent; | |
| 28 class FrameMetrics; | |
| 29 | |
| 30 class CompositorChild MOZ_FINAL : public PCompositorChild | |
| 31 { | |
| 32 NS_INLINE_DECL_REFCOUNTING(CompositorChild) | |
| 33 public: | |
| 34 CompositorChild(ClientLayerManager *aLayerManager); | |
| 35 | |
| 36 void Destroy(); | |
| 37 | |
| 38 /** | |
| 39 * Lookup the FrameMetrics shared by the compositor process with the | |
| 40 * associated FrameMetrics::ViewID. The returned FrameMetrics is used | |
| 41 * in progressive paint calculations. | |
| 42 */ | |
| 43 bool LookupCompositorFrameMetrics(const FrameMetrics::ViewID aId, FrameMetrics&); | |
| 44 | |
| 45 /** | |
| 46 * We're asked to create a new Compositor in response to an Opens() | |
| 47 * or Bridge() request from our parent process. The Transport is to | |
| 48 * the compositor's context. | |
| 49 */ | |
| 50 static PCompositorChild* | |
| 51 Create(Transport* aTransport, ProcessId aOtherProcess); | |
| 52 | |
| 53 static CompositorChild* Get(); | |
| 54 | |
| 55 static bool ChildProcessHasCompositor() { return sCompositor != nullptr; } | |
| 56 | |
| 57 virtual bool RecvInvalidateAll() MOZ_OVERRIDE; | |
| 58 | |
| 59 virtual bool RecvDidComposite(const uint64_t& aId) MOZ_OVERRIDE; | |
| 60 | |
| 61 private: | |
| 62 // Private destructor, to discourage deletion outside of Release(): | |
| 63 virtual ~CompositorChild(); | |
| 64 | |
| 65 virtual PLayerTransactionChild* | |
| 66 AllocPLayerTransactionChild(const nsTArray<LayersBackend>& aBackendHints, | |
| 67 const uint64_t& aId, | |
| 68 TextureFactoryIdentifier* aTextureFactoryIdentifier, | |
| 69 bool* aSuccess) MOZ_OVERRIDE; | |
| 70 | |
| 71 virtual bool DeallocPLayerTransactionChild(PLayerTransactionChild *aChild) MOZ_OVERRIDE; | |
| 72 | |
| 73 virtual void ActorDestroy(ActorDestroyReason aWhy) MOZ_OVERRIDE; | |
| 74 | |
| 75 virtual bool RecvSharedCompositorFrameMetrics(const mozilla::ipc::SharedMemoryBasic::Handle& metrics, | |
| 76 const CrossProcessMutexHandle& handle, | |
| 77 const uint32_t& aAPZCId) MOZ_OVERRIDE; | |
| 78 | |
| 79 virtual bool RecvReleaseSharedCompositorFrameMetrics(const ViewID& aId, | |
| 80 const uint32_t& aAPZCId) MOZ_OVERRIDE; | |
| 81 | |
| 82 // Class used to store the shared FrameMetrics, mutex, and APZCId in a hash table | |
| 83 class SharedFrameMetricsData { | |
| 84 public: | |
| 85 SharedFrameMetricsData( | |
| 86 const mozilla::ipc::SharedMemoryBasic::Handle& metrics, | |
| 87 const CrossProcessMutexHandle& handle, | |
| 88 const uint32_t& aAPZCId); | |
| 89 | |
| 90 ~SharedFrameMetricsData(); | |
| 91 | |
| 92 void CopyFrameMetrics(FrameMetrics* aFrame); | |
| 93 FrameMetrics::ViewID GetViewID(); | |
| 94 uint32_t GetAPZCId(); | |
| 95 | |
| 96 private: | |
| 97 // Pointer to the class that allows access to the shared memory that contains | |
| 98 // the shared FrameMetrics | |
| 99 mozilla::ipc::SharedMemoryBasic* mBuffer; | |
| 100 CrossProcessMutex* mMutex; | |
| 101 // Unique ID of the APZC that is sharing the FrameMetrics | |
| 102 uint32_t mAPZCId; | |
| 103 }; | |
| 104 | |
| 105 nsRefPtr<ClientLayerManager> mLayerManager; | |
| 106 | |
| 107 // The ViewID of the FrameMetrics is used as the key for this hash table. | |
| 108 // While this should be safe to use since the ViewID is unique | |
| 109 nsClassHashtable<nsUint64HashKey, SharedFrameMetricsData> mFrameMetricsTable; | |
| 110 | |
| 111 // When we're in a child process, this is the process-global | |
| 112 // compositor that we use to forward transactions directly to the | |
| 113 // compositor context in another process. | |
| 114 static CompositorChild* sCompositor; | |
| 115 | |
| 116 DISALLOW_EVIL_CONSTRUCTORS(CompositorChild); | |
| 117 }; | |
| 118 | |
| 119 } // layers | |
| 120 } // mozilla | |
| 121 | |
| 122 #endif // mozilla_layers_CompositorChild_h |
