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/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 _LOADMANAGER_H_
#define _LOADMANAGER_H_
#include "LoadMonitor.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/Services.h"
#include "nsTArray.h"
#include "nsIObserver.h"
#include "webrtc/common_types.h"
#include "webrtc/video_engine/include/vie_base.h"
extern mozilla::LazyLogModule gLoadManagerLog;
namespace mozilla {
class LoadManagerSingleton : public LoadNotificationCallback,
public webrtc::CPULoadStateCallbackInvoker,
public webrtc::CpuOveruseObserver,
public nsIObserver
{
public:
static LoadManagerSingleton* Get();
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
// LoadNotificationCallback interface
void LoadChanged(float aSystemLoad, float aProcessLoad) override;
// CpuOveruseObserver interface
// Called as soon as an overuse is detected.
void OveruseDetected() override;
// Called periodically when the system is not overused any longer.
void NormalUsage() override;
// CPULoadStateCallbackInvoker interface
void AddObserver(webrtc::CPULoadStateObserver * aObserver) override;
void RemoveObserver(webrtc::CPULoadStateObserver * aObserver) override;
private:
LoadManagerSingleton(bool aEncoderOnly,
int aLoadMeasurementInterval,
int aAveragingMeasurements,
float aHighLoadThreshold,
float aLowLoadThreshold);
~LoadManagerSingleton();
void LoadHasChanged(webrtc::CPULoadState aNewState);
RefPtr<LoadMonitor> mLoadMonitor;
// This protects access to the mObservers list, the current state, and
// pretty much all the other members (below).
Mutex mLock;
nsTArray<webrtc::CPULoadStateObserver*> mObservers;
webrtc::CPULoadState mCurrentState;
TimeStamp mLastStateChange;
float mTimeInState[static_cast<int>(webrtc::kLoadLast)];
// Set when overuse was signaled to us, and hasn't been un-signaled yet.
bool mOveruseActive;
float mLoadSum;
int mLoadSumMeasurements;
// Load measurement settings
int mLoadMeasurementInterval;
int mAveragingMeasurements;
float mHighLoadThreshold;
float mLowLoadThreshold;
static StaticRefPtr<LoadManagerSingleton> sSingleton;
};
class LoadManager final : public webrtc::CPULoadStateCallbackInvoker,
public webrtc::CpuOveruseObserver
{
public:
explicit LoadManager(LoadManagerSingleton* aManager)
: mManager(aManager)
{}
~LoadManager() {}
void AddObserver(webrtc::CPULoadStateObserver * aObserver) override
{
mManager->AddObserver(aObserver);
}
void RemoveObserver(webrtc::CPULoadStateObserver * aObserver) override
{
mManager->RemoveObserver(aObserver);
}
void OveruseDetected() override
{
mManager->OveruseDetected();
}
void NormalUsage() override
{
mManager->NormalUsage();
}
private:
RefPtr<LoadManagerSingleton> mManager;
};
} //namespace
#endif /* _LOADMANAGER_H_ */
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