gfx/layers/SyncObject.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 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_GFX_LAYERS_SYNCOBJECT_H
   8 #define MOZILLA_GFX_LAYERS_SYNCOBJECT_H
   9
  10 #include "mozilla/RefCounted.h"
  11
  12 struct ID3D11Device;
  13
  14 namespace mozilla {
  15 namespace layers {
  16
  17 #ifdef XP_WIN
  18 typedef void* SyncHandle;
  19 #else
  20 typedef uintptr_t SyncHandle;
  21 #endif  // XP_WIN
  22
  23 class SyncObjectHost : public RefCounted<SyncObjectHost> {
  24  public:
  25   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SyncObjectHost)
  26   virtual ~SyncObjectHost() = default;
  27
  28 #ifdef XP_WIN
  29   static already_AddRefed<SyncObjectHost> CreateSyncObjectHost(
  30       ID3D11Device* aDevice);
  31 #endif
  32   virtual bool Init() = 0;
  33
  34   virtual SyncHandle GetSyncHandle() = 0;
  35
  36   // Return false for failed synchronization.
  37   virtual bool Synchronize(bool aFallible = false) = 0;
  38
  39  protected:
  40   SyncObjectHost() = default;
  41 };
  42
  43 class SyncObjectClient : public external::AtomicRefCounted<SyncObjectClient> {
  44  public:
  45   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SyncObjectClient)
  46   virtual ~SyncObjectClient() = default;
  47
  48 #ifdef XP_WIN
  49   static already_AddRefed<SyncObjectClient> CreateSyncObjectClient(
  50       SyncHandle aHandle, ID3D11Device* aDevice);
  51 #endif
  52   static already_AddRefed<SyncObjectClient>
  53   CreateSyncObjectClientForContentDevice(SyncHandle aHandle);
  54
  55   enum class SyncType {
  56     D3D11,
  57   };
  58
  59   virtual SyncType GetSyncType() = 0;
  60
  61   // Return false for failed synchronization.
  62   virtual bool Synchronize(bool aFallible = false) = 0;
  63
  64   virtual bool IsSyncObjectValid() = 0;
  65
  66   virtual void EnsureInitialized() = 0;
  67
  68  protected:
  69   SyncObjectClient() = default;
  70 };
  71
  72 }  // namespace layers
  73 }  // namespace mozilla
  74
  75 #endif  // MOZILLA_GFX_LAYERS_SYNCOBJECT_H