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/* -*- 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