SyncObject.h - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef MOZILLA_GFX_LAYERS_SYNCOBJECT_H

#define MOZILLA_GFX_LAYERS_SYNCOBJECT_H

#include "mozilla/gfx/FileHandleWrapper.h"

#include "mozilla/RefCounted.h"

struct ID3D11Device;

namespace mozilla {

namespace layers {

#ifdef XP_WIN

typedef RefPtr<gfx::FileHandleWrapper> SyncHandle;

#else

typedef uintptr_t SyncHandle;

#endif  // XP_WIN

class SyncObjectHost : public RefCounted<SyncObjectHost> {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SyncObjectHost)

  virtual ~SyncObjectHost() = default;

#ifdef XP_WIN

  static already_AddRefed<SyncObjectHost> CreateSyncObjectHost(

      ID3D11Device* aDevice);

#endif

  virtual bool Init() = 0;

  virtual SyncHandle GetSyncHandle() = 0;

  // Return false for failed synchronization.

  virtual bool Synchronize(bool aFallible = false) = 0;

 protected:

  SyncObjectHost() = default;

};

class SyncObjectClient : public external::AtomicRefCounted<SyncObjectClient> {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SyncObjectClient)

  virtual ~SyncObjectClient() = default;

#ifdef XP_WIN

  static already_AddRefed<SyncObjectClient> CreateSyncObjectClient(

      SyncHandle aHandle, ID3D11Device* aDevice);

#endif

  static already_AddRefed<SyncObjectClient>

  CreateSyncObjectClientForContentDevice(SyncHandle aHandle);

  enum class SyncType {

    D3D11,

};

  virtual SyncType GetSyncType() = 0;

  // Return false for failed synchronization.

  virtual bool Synchronize(bool aFallible = false) = 0;

  virtual bool IsSyncObjectValid() = 0;

  virtual void EnsureInitialized() = 0;

 protected:

  SyncObjectClient() = default;

};

}  // namespace layers

}  // namespace mozilla

#endif  // MOZILLA_GFX_LAYERS_SYNCOBJECT_H