зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.1 KiB
C++
84 строки
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if !defined(MediaSystemResourceManager_h_)
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#define MediaSystemResourceManager_h_
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#include <queue>
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#include "MediaSystemResourceTypes.h"
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#include "mozilla/ReentrantMonitor.h"
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#include "mozilla/StaticPtr.h"
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#include "nsAutoPtr.h"
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#include "nsDataHashtable.h"
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#include "nsISupportsImpl.h"
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namespace mozilla {
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namespace media {
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class MediaSystemResourceManagerChild;
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} // namespace media
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class MediaSystemResourceClient;
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class MediaSystemResourceReservationListener;
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class ReentrantMonitor;
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class TaskQueue;
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/**
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* Manage media system resource allocation requests within a process.
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*/
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class MediaSystemResourceManager
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{
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaSystemResourceManager)
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static MediaSystemResourceManager* Get();
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static void Init();
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static void Shutdown();
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void OnIpcClosed();
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void Register(MediaSystemResourceClient* aClient);
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void Unregister(MediaSystemResourceClient* aClient);
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bool SetListener(MediaSystemResourceClient* aClient,
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MediaSystemResourceReservationListener* aListener);
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void Acquire(MediaSystemResourceClient* aClient);
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bool AcquireSyncNoWait(MediaSystemResourceClient* aClient);
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void ReleaseResource(MediaSystemResourceClient* aClient);
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void RecvResponse(uint32_t aId, bool aSuccess);
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private:
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MediaSystemResourceManager();
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virtual ~MediaSystemResourceManager();
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void OpenIPC();
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void CloseIPC();
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bool IsIpcClosed();
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void DoAcquire(uint32_t aId);
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void DoRelease(uint32_t aId);
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void HandleAcquireResult(uint32_t aId, bool aSuccess);
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ReentrantMonitor mReentrantMonitor;
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bool mShutDown;
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media::MediaSystemResourceManagerChild* mChild;
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nsDataHashtable<nsUint32HashKey, MediaSystemResourceClient*> mResourceClients;
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static StaticRefPtr<MediaSystemResourceManager> sSingleton;
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};
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} // namespace mozilla
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#endif
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