1 files changed, 75 insertions, 0 deletions
diff --git a/gfx/layers/SyncObject.h b/gfx/layers/SyncObject.h
new file mode 100644
index 0000000000..03590dd436
--- /dev/null
+++ b/gfx/layers/SyncObject.h
@@ -0,0 +1,75 @@
+/* -*- 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/RefCounted.h"
+
+struct ID3D11Device;
+
+namespace mozilla {
+namespace layers {
+
+#ifdef XP_WIN
+typedef void* 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