Add m-esr52 at 52.6.0

1 files changed, 82 insertions, 0 deletions

diff --git a/dom/media/systemservices/MediaSystemResourceManager.h b/dom/media/systemservices/MediaSystemResourceManager.h
new file mode 100644
index 000000000..36869e202
--- /dev/null
+++ b/dom/media/systemservices/MediaSystemResourceManager.h
@@ -0,0 +1,82 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#if !defined(MediaSystemResourceManager_h_)
+#define MediaSystemResourceManager_h_
+
+#include <queue>
+
+#include "MediaSystemResourceTypes.h"
+#include "mozilla/ReentrantMonitor.h"
+#include "mozilla/StaticPtr.h"
+#include "nsDataHashtable.h"
+#include "nsISupportsImpl.h"
+
+namespace mozilla {
+
+namespace media {
+class MediaSystemResourceManagerChild;
+} // namespace media
+
+class MediaSystemResourceClient;
+class MediaSystemResourceReservationListener;
+class ReentrantMonitor;
+class TaskQueue;
+
+/**
+ * Manage media system resource allocation requests within a process.
+ */
+class MediaSystemResourceManager
+{
+public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaSystemResourceManager)
+
+  static MediaSystemResourceManager* Get();
+  static void Init();
+  static void Shutdown();
+
+  void OnIpcClosed();
+
+  void Register(MediaSystemResourceClient* aClient);
+  void Unregister(MediaSystemResourceClient* aClient);
+
+  bool SetListener(MediaSystemResourceClient* aClient,
+                   MediaSystemResourceReservationListener* aListener);
+
+  void Acquire(MediaSystemResourceClient* aClient);
+  bool AcquireSyncNoWait(MediaSystemResourceClient* aClient);
+  void ReleaseResource(MediaSystemResourceClient* aClient);
+
+  void RecvResponse(uint32_t aId, bool aSuccess);
+
+private:
+  MediaSystemResourceManager();
+  virtual ~MediaSystemResourceManager();
+
+  void OpenIPC();
+  void CloseIPC();
+  bool IsIpcClosed();
+
+  void DoAcquire(uint32_t aId);
+
+  void DoRelease(uint32_t aId);
+
+  void HandleAcquireResult(uint32_t aId, bool aSuccess);
+
+  ReentrantMonitor mReentrantMonitor;
+
+  bool mShutDown;
+
+  media::MediaSystemResourceManagerChild* mChild;
+
+  nsDataHashtable<nsUint32HashKey, MediaSystemResourceClient*> mResourceClients;
+
+  static StaticRefPtr<MediaSystemResourceManager> sSingleton;
+};
+
+} // namespace mozilla
+
+#endif