Add m-esr52 at 52.6.0

1 files changed, 91 insertions, 0 deletions

diff --git a/gfx/layers/client/CompositableChild.h b/gfx/layers/client/CompositableChild.h
new file mode 100644
index 000000000..381d8051b
--- /dev/null
+++ b/gfx/layers/client/CompositableChild.h
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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_client_CompositableChild_h
+#define mozilla_gfx_layers_client_CompositableChild_h
+
+#include <stdint.h>
+#include "IPDLActor.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/layers/PCompositableChild.h"
+
+namespace mozilla {
+namespace layers {
+
+class CompositableClient;
+class AsyncCompositableChild;
+
+/**
+ * IPDL actor used by CompositableClient to match with its corresponding
+ * CompositableHost on the compositor side.
+ *
+ * CompositableChild is owned by a CompositableClient.
+ */
+class CompositableChild : public PCompositableChild
+{
+public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositableChild)
+
+  static PCompositableChild* CreateActor();
+  static void DestroyActor(PCompositableChild* aChild);
+
+  void Init(CompositableClient* aCompositable, uint64_t aAsyncID);
+  virtual void RevokeCompositableClient();
+
+  virtual void ActorDestroy(ActorDestroyReason) override;
+
+  virtual RefPtr<CompositableClient> GetCompositableClient();
+
+  virtual AsyncCompositableChild* AsAsyncCompositableChild() {
+    return nullptr;
+  }
+
+  uint64_t GetAsyncID() const {
+    return mAsyncID;
+  }
+
+  // These should only be called on the IPDL thread.
+  bool IsConnected() const;
+  bool CanSend() const {
+    return mCanSend;
+  }
+
+protected:
+  CompositableChild();
+  virtual ~CompositableChild();
+
+protected:
+  CompositableClient* mCompositableClient;
+  uint64_t mAsyncID;
+  bool mCanSend;
+};
+
+// This CompositableChild can be used off the main thread.
+class AsyncCompositableChild final : public CompositableChild
+{
+public:
+  static PCompositableChild* CreateActor();
+
+  void RevokeCompositableClient() override;
+  RefPtr<CompositableClient> GetCompositableClient() override;
+
+  void ActorDestroy(ActorDestroyReason) override;
+
+  AsyncCompositableChild* AsAsyncCompositableChild() override {
+    return this;
+  }
+
+protected:
+  AsyncCompositableChild();
+  ~AsyncCompositableChild() override;
+
+private:
+  Mutex mLock;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif // mozilla_gfx_layers_client_CompositableChild_h