The Tor Browser / file comparison
comparison: content/media/webrtc/LoadManager.cpp
content/media/webrtc/LoadManager.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:321184abc260 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 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/. */ | |
| 5 | |
| 6 #include "LoadManager.h" | |
| 7 #include "LoadMonitor.h" | |
| 8 #include "nsString.h" | |
| 9 #include "prlog.h" | |
| 10 #include "prtime.h" | |
| 11 #include "prinrval.h" | |
| 12 #include "prsystem.h" | |
| 13 | |
| 14 #include "nsString.h" | |
| 15 #include "nsThreadUtils.h" | |
| 16 #include "nsReadableUtils.h" | |
| 17 #include "nsNetUtil.h" | |
| 18 | |
| 19 // NSPR_LOG_MODULES=LoadManager:5 | |
| 20 PRLogModuleInfo *gLoadManagerLog = nullptr; | |
| 21 #undef LOG | |
| 22 #undef LOG_ENABLED | |
| 23 #if defined(PR_LOGGING) | |
| 24 #define LOG(args) PR_LOG(gLoadManagerLog, PR_LOG_DEBUG, args) | |
| 25 #define LOG_ENABLED() PR_LOG_TEST(gLoadManagerLog, 5) | |
| 26 #else | |
| 27 #define LOG(args) | |
| 28 #define LOG_ENABLED() (false) | |
| 29 #endif | |
| 30 | |
| 31 namespace mozilla { | |
| 32 | |
| 33 LoadManager::LoadManager(int aLoadMeasurementInterval, | |
| 34 int aAveragingMeasurements, | |
| 35 float aHighLoadThreshold, | |
| 36 float aLowLoadThreshold) | |
| 37 : mLoadSum(0.0f), | |
| 38 mLoadSumMeasurements(0), | |
| 39 mOveruseActive(false), | |
| 40 mLoadMeasurementInterval(aLoadMeasurementInterval), | |
| 41 mAveragingMeasurements(aAveragingMeasurements), | |
| 42 mHighLoadThreshold(aHighLoadThreshold), | |
| 43 mLowLoadThreshold(aLowLoadThreshold), | |
| 44 mCurrentState(webrtc::kLoadNormal) | |
| 45 { | |
| 46 #if defined(PR_LOGGING) | |
| 47 if (!gLoadManagerLog) | |
| 48 gLoadManagerLog = PR_NewLogModule("LoadManager"); | |
| 49 #endif | |
| 50 LOG(("LoadManager - Initializing (%dms x %d, %f, %f)", | |
| 51 mLoadMeasurementInterval, mAveragingMeasurements, | |
| 52 mHighLoadThreshold, mLowLoadThreshold)); | |
| 53 MOZ_ASSERT(mHighLoadThreshold > mLowLoadThreshold); | |
| 54 mLoadMonitor = new LoadMonitor(mLoadMeasurementInterval); | |
| 55 mLoadMonitor->Init(mLoadMonitor); | |
| 56 mLoadMonitor->SetLoadChangeCallback(this); | |
| 57 } | |
| 58 | |
| 59 LoadManager::~LoadManager() | |
| 60 { | |
| 61 mLoadMonitor->Shutdown(); | |
| 62 } | |
| 63 | |
| 64 void | |
| 65 LoadManager::LoadChanged(float aSystemLoad, float aProcesLoad) | |
| 66 { | |
| 67 // Update total load, and total amount of measured seconds. | |
| 68 mLoadSum += aSystemLoad; | |
| 69 mLoadSumMeasurements++; | |
| 70 | |
| 71 if (mLoadSumMeasurements >= mAveragingMeasurements) { | |
| 72 double averagedLoad = mLoadSum / (float)mLoadSumMeasurements; | |
| 73 | |
| 74 webrtc::CPULoadState oldState = mCurrentState; | |
| 75 | |
| 76 if (mOveruseActive || averagedLoad > mHighLoadThreshold) { | |
| 77 LOG(("LoadManager - LoadStressed")); | |
| 78 mCurrentState = webrtc::kLoadStressed; | |
| 79 } else if (averagedLoad < mLowLoadThreshold) { | |
| 80 LOG(("LoadManager - LoadRelaxed")); | |
| 81 mCurrentState = webrtc::kLoadRelaxed; | |
| 82 } else { | |
| 83 LOG(("LoadManager - LoadNormal")); | |
| 84 mCurrentState = webrtc::kLoadNormal; | |
| 85 } | |
| 86 | |
| 87 if (oldState != mCurrentState) | |
| 88 LoadHasChanged(); | |
| 89 | |
| 90 mLoadSum = 0; | |
| 91 mLoadSumMeasurements = 0; | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 void | |
| 96 LoadManager::OveruseDetected() | |
| 97 { | |
| 98 LOG(("LoadManager - Overuse Detected")); | |
| 99 mOveruseActive = true; | |
| 100 if (mCurrentState != webrtc::kLoadStressed) { | |
| 101 mCurrentState = webrtc::kLoadStressed; | |
| 102 LoadHasChanged(); | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 void | |
| 107 LoadManager::NormalUsage() | |
| 108 { | |
| 109 LOG(("LoadManager - Overuse finished")); | |
| 110 mOveruseActive = false; | |
| 111 } | |
| 112 | |
| 113 void | |
| 114 LoadManager::LoadHasChanged() | |
| 115 { | |
| 116 LOG(("LoadManager - Signaling LoadHasChanged to %d listeners", mObservers.Length())); | |
| 117 for (size_t i = 0; i < mObservers.Length(); i++) { | |
| 118 mObservers.ElementAt(i)->onLoadStateChanged(mCurrentState); | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 void | |
| 123 LoadManager::AddObserver(webrtc::CPULoadStateObserver * aObserver) | |
| 124 { | |
| 125 LOG(("LoadManager - Adding Observer")); | |
| 126 mObservers.AppendElement(aObserver); | |
| 127 } | |
| 128 | |
| 129 void | |
| 130 LoadManager::RemoveObserver(webrtc::CPULoadStateObserver * aObserver) | |
| 131 { | |
| 132 LOG(("LoadManager - Removing Observer")); | |
| 133 if (!mObservers.RemoveElement(aObserver)) { | |
| 134 LOG(("LOadManager - Element to remove not found")); | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 | |
| 139 } |
