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