The Tor Browser: content/media/webrtc/LoadManager.h@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

     1 /* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef _LOADMANAGER_H_

     7 #define _LOADMANAGER_H_

     9 #include "LoadMonitor.h"

    10 #include "webrtc/common_types.h"

    11 #include "webrtc/video_engine/include/vie_base.h"

    12 #include "mozilla/TimeStamp.h"

    13 #include "nsTArray.h"

    15 extern PRLogModuleInfo *gLoadManagerLog;

    17 namespace mozilla {

    19 class LoadManager : public LoadNotificationCallback,

    20                     public webrtc::CPULoadStateCallbackInvoker,

    21                     public webrtc::CpuOveruseObserver

    22 {

    23 public:

    24     LoadManager(int aLoadMeasurementInterval,

    25                 int aAveragingMeasurements,

    26                 float aHighLoadThreshold,

    27                 float aLowLoadThreshold);

    28     ~LoadManager();

    30     // LoadNotificationCallback interface

    31     virtual void LoadChanged(float aSystemLoad, float aProcessLoad) MOZ_OVERRIDE;

    32     // CpuOveruseObserver interface

    33     // Called as soon as an overuse is detected.

    34     virtual void OveruseDetected() MOZ_OVERRIDE;

    35     // Called periodically when the system is not overused any longer.

    36     virtual void NormalUsage() MOZ_OVERRIDE;

    37     // CPULoadStateCallbackInvoker interface

    38     virtual void AddObserver(webrtc::CPULoadStateObserver * aObserver) MOZ_OVERRIDE;

    39     virtual void RemoveObserver(webrtc::CPULoadStateObserver * aObserver) MOZ_OVERRIDE;

    41 private:

    42     void LoadHasChanged();

    44     nsRefPtr<LoadMonitor> mLoadMonitor;

    45     float mLoadSum;

    46     int   mLoadSumMeasurements;

    47     // Set when overuse was signaled to us, and hasn't been un-signaled yet.

    48     bool  mOveruseActive;

    49     // Load measurement settings

    50     int mLoadMeasurementInterval;

    51     int mAveragingMeasurements;

    52     float mHighLoadThreshold;

    53     float mLowLoadThreshold;

    55     webrtc::CPULoadState mCurrentState;

    57     nsTArray<webrtc::CPULoadStateObserver*> mObservers;

    58 };

    60 } //namespace

    62 #endif /* _LOADMANAGER_H_ */

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