mirror of
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140 lines
3.7 KiB
C++
140 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "LoadManager.h"
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#include "LoadMonitor.h"
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#include "nsString.h"
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#include "prlog.h"
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#include "prtime.h"
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#include "prinrval.h"
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#include "prsystem.h"
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#include "nsString.h"
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#include "nsThreadUtils.h"
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#include "nsReadableUtils.h"
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#include "nsNetUtil.h"
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// NSPR_LOG_MODULES=LoadManager:5
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PRLogModuleInfo *gLoadManagerLog = nullptr;
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#undef LOG
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#undef LOG_ENABLED
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#if defined(PR_LOGGING)
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#define LOG(args) PR_LOG(gLoadManagerLog, PR_LOG_DEBUG, args)
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#define LOG_ENABLED() PR_LOG_TEST(gLoadManagerLog, 5)
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#else
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#define LOG(args)
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#define LOG_ENABLED() (false)
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#endif
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namespace mozilla {
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LoadManager::LoadManager(int aLoadMeasurementInterval,
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int aAveragingMeasurements,
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float aHighLoadThreshold,
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float aLowLoadThreshold)
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: mLoadSum(0.0f),
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mLoadSumMeasurements(0),
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mOveruseActive(false),
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mLoadMeasurementInterval(aLoadMeasurementInterval),
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mAveragingMeasurements(aAveragingMeasurements),
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mHighLoadThreshold(aHighLoadThreshold),
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mLowLoadThreshold(aLowLoadThreshold),
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mCurrentState(webrtc::kLoadNormal)
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{
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#if defined(PR_LOGGING)
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if (!gLoadManagerLog)
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gLoadManagerLog = PR_NewLogModule("LoadManager");
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#endif
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LOG(("LoadManager - Initializing (%dms x %d, %f, %f)",
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mLoadMeasurementInterval, mAveragingMeasurements,
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mHighLoadThreshold, mLowLoadThreshold));
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MOZ_ASSERT(mHighLoadThreshold > mLowLoadThreshold);
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mLoadMonitor = new LoadMonitor(mLoadMeasurementInterval);
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mLoadMonitor->Init(mLoadMonitor);
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mLoadMonitor->SetLoadChangeCallback(this);
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}
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LoadManager::~LoadManager()
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{
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mLoadMonitor->Shutdown();
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}
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void
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LoadManager::LoadChanged(float aSystemLoad, float aProcesLoad)
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{
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// Update total load, and total amount of measured seconds.
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mLoadSum += aSystemLoad;
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mLoadSumMeasurements++;
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if (mLoadSumMeasurements >= mAveragingMeasurements) {
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double averagedLoad = mLoadSum / (float)mLoadSumMeasurements;
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webrtc::CPULoadState oldState = mCurrentState;
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if (mOveruseActive || averagedLoad > mHighLoadThreshold) {
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LOG(("LoadManager - LoadStressed"));
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mCurrentState = webrtc::kLoadStressed;
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} else if (averagedLoad < mLowLoadThreshold) {
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LOG(("LoadManager - LoadRelaxed"));
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mCurrentState = webrtc::kLoadRelaxed;
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} else {
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LOG(("LoadManager - LoadNormal"));
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mCurrentState = webrtc::kLoadNormal;
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}
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if (oldState != mCurrentState)
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LoadHasChanged();
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mLoadSum = 0;
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mLoadSumMeasurements = 0;
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}
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}
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void
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LoadManager::OveruseDetected()
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{
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LOG(("LoadManager - Overuse Detected"));
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mOveruseActive = true;
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if (mCurrentState != webrtc::kLoadStressed) {
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mCurrentState = webrtc::kLoadStressed;
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LoadHasChanged();
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}
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}
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void
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LoadManager::NormalUsage()
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{
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LOG(("LoadManager - Overuse finished"));
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mOveruseActive = false;
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}
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void
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LoadManager::LoadHasChanged()
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{
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LOG(("LoadManager - Signaling LoadHasChanged to %d listeners", mObservers.Length()));
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for (size_t i = 0; i < mObservers.Length(); i++) {
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mObservers.ElementAt(i)->onLoadStateChanged(mCurrentState);
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}
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}
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void
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LoadManager::AddObserver(webrtc::CPULoadStateObserver * aObserver)
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{
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LOG(("LoadManager - Adding Observer"));
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mObservers.AppendElement(aObserver);
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}
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void
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LoadManager::RemoveObserver(webrtc::CPULoadStateObserver * aObserver)
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{
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LOG(("LoadManager - Removing Observer"));
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if (!mObservers.RemoveElement(aObserver)) {
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LOG(("LOadManager - Element to remove not found"));
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}
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}
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}
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