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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // start.js sends a "start" message to set this. |
| 6 window.benchmarkConfiguration = {}; |
| 7 |
| 8 // The callback (e.g. report writer) is set via AddBenchmarckCallback. |
| 9 window.benchmarkCallback; |
| 10 |
| 11 // Url to load before loading target page. |
| 12 var kWaitUrl = "http://wprwprwpr/web-page-replay-generate-200"; |
| 13 |
| 14 // Constant StatCounter Names |
| 15 var kTcpReadBytes = "tcp.read_bytes"; |
| 16 var kTcpWriteBytes = "tcp.write_bytes"; |
| 17 var kRequestCount = "HttpNetworkTransaction.Count"; |
| 18 var kConnectCount = "tcp.connect"; |
| 19 |
| 20 function CHECK(expr, comment) { |
| 21 if (!expr) { |
| 22 console.log(comment); |
| 23 alert(comment); |
| 24 } |
| 25 } |
| 26 |
| 27 function Result() { |
| 28 var me_ = this; |
| 29 this.url = ""; |
| 30 this.firstPaintTime = 0; |
| 31 this.readBytesKB = 0; |
| 32 this.writeBytesKB = 0; |
| 33 this.numRequests = 0; |
| 34 this.numConnects = 0; |
| 35 this.timing = {}; // window.performance.timing |
| 36 this.getTotalTime = function() { |
| 37 var totalTime = 0 |
| 38 if (me_.timing.navigationStart && me_.timing.loadEventEnd) { |
| 39 totalTime = me_.timing.loadEventEnd - me_.timing.navigationStart; |
| 40 } |
| 41 CHECK(totalTime >= 0); |
| 42 return totalTime; |
| 43 } |
| 44 } |
| 45 |
| 46 // Collect all the results for a session (i.e. different pages). |
| 47 function ResultsCollection() { |
| 48 var results_ = []; |
| 49 var pages_ = []; |
| 50 var pageResults_ = {}; |
| 51 |
| 52 this.addResult = function(result) { |
| 53 results_.push(result); |
| 54 var url = result.url; |
| 55 if (!(url in pageResults_)) { |
| 56 pages_.push(url); |
| 57 pageResults_[url] = []; |
| 58 } |
| 59 pageResults_[url].push(result); |
| 60 } |
| 61 |
| 62 this.getPages = function() { |
| 63 return pages_; |
| 64 } |
| 65 |
| 66 this.getResults = function() { |
| 67 return results_; |
| 68 } |
| 69 |
| 70 this.getTotalTimes = function() { |
| 71 return results_.map(function (t) { return t.getTotalTime(); }); |
| 72 } |
| 73 } |
| 74 |
| 75 // Load a url in the default tab and record the time. |
| 76 function PageLoader(url, resultReadyCallback) { |
| 77 var me_ = this; |
| 78 var url_ = url; |
| 79 var resultReadyCallback_ = resultReadyCallback; |
| 80 |
| 81 // If it record mode, wait a little longer for lazy loaded resources. |
| 82 var postLoadGraceMs_ = window.isRecordMode ? 5000 : 0; |
| 83 var loadInterval_ = window.loadInterval; |
| 84 var checkInterval_ = window.checkInterval; |
| 85 var timeout_ = window.timeout; |
| 86 var maxLoadChecks_ = window.maxLoadChecks; |
| 87 |
| 88 var preloadFunc_; |
| 89 var timeoutId_; |
| 90 var isFinished_; |
| 91 var result_; |
| 92 |
| 93 var initialReadBytes_; |
| 94 var initialWriteBytes_; |
| 95 var initialRequestCount_; |
| 96 var initialConnectCount_; |
| 97 |
| 98 this.result = function() { return result_; }; |
| 99 |
| 100 this.run = function() { |
| 101 timeoutId_ = null; |
| 102 isFinished_ = false; |
| 103 result_ = null; |
| 104 initialReadBytes_ = chrome.benchmarking.counter(kTcpReadBytes); |
| 105 initialWriteBytes_ = chrome.benchmarking.counter(kTcpWriteBytes); |
| 106 initialRequestCount_ = chrome.benchmarking.counter(kRequestCount); |
| 107 initialConnectCount_ = chrome.benchmarking.counter(kConnectCount); |
| 108 |
| 109 if (me_.preloadFunc_) { |
| 110 me_.preloadFunc_(me_.load_); |
| 111 } else { |
| 112 me_.load_(); |
| 113 } |
| 114 }; |
| 115 |
| 116 this.setClearAll = function() { |
| 117 me_.preloadFunc_ = me_.clearAll_; |
| 118 }; |
| 119 |
| 120 this.setClearConnections = function() { |
| 121 me_.preloadFunc_ = me_.clearConnections_; |
| 122 }; |
| 123 |
| 124 this.clearAll_ = function(callback) { |
| 125 chrome.tabs.getSelected(null, function(tab) { |
| 126 chrome.tabs.update(tab.id, {"url": kWaitUrl}, function() { |
| 127 chrome.benchmarking.clearHostResolverCache(); |
| 128 chrome.benchmarking.clearPredictorCache(); |
| 129 chrome.benchmarking.closeConnections(); |
| 130 var dataToRemove = { |
| 131 "appcache": true, |
| 132 "cache": true, |
| 133 "cookies": true, |
| 134 "downloads": true, |
| 135 "fileSystems": true, |
| 136 "formData": true, |
| 137 "history": true, |
| 138 "indexedDB": true, |
| 139 "localStorage": true, |
| 140 "passwords": true, |
| 141 "pluginData": true, |
| 142 "webSQL": true |
| 143 }; |
| 144 // Add any items new to the API. |
| 145 for (var prop in chrome.browsingData) { |
| 146 var dataName = prop.replace("remove", ""); |
| 147 if (dataName && dataName != prop) { |
| 148 dataName = dataName.charAt(0).toLowerCase() + |
| 149 dataName.substr(1); |
| 150 if (!dataToRemove.hasOwnProperty(dataName)) { |
| 151 console.log("New browsingData API item: " + dataName); |
| 152 dataToRemove[dataName] = true; |
| 153 } |
| 154 } |
| 155 } |
| 156 chrome.browsingData.remove({}, dataToRemove, callback); |
| 157 }); |
| 158 }); |
| 159 }; |
| 160 |
| 161 this.clearConnections_ = function(callback) { |
| 162 chrome.benchmarking.closeConnections(); |
| 163 callback(); |
| 164 }; |
| 165 |
| 166 this.load_ = function() { |
| 167 console.log("LOAD started: " + url_); |
| 168 setTimeout(function() { |
| 169 chrome.extension.onRequest.addListener(me_.finishLoad_); |
| 170 timeoutId_ = setTimeout(function() { |
| 171 me_.finishLoad_({"loadTimes": null, "timing": null}); |
| 172 }, timeout_); |
| 173 chrome.tabs.getSelected(null, function(tab) { |
| 174 chrome.tabs.update(tab.id, {"url": url_}); |
| 175 }); |
| 176 }, loadInterval_); |
| 177 }; |
| 178 |
| 179 this.finishLoad_ = function(msg) { |
| 180 if (!isFinished_) { |
| 181 isFinished_ = true; |
| 182 clearTimeout(timeoutId_); |
| 183 chrome.extension.onRequest.removeListener(me_.finishLoad_); |
| 184 me_.saveResult_(msg.loadTimes, msg.timing); |
| 185 } |
| 186 }; |
| 187 |
| 188 this.saveResult_ = function(loadTimes, timing) { |
| 189 result_ = new Result() |
| 190 result_.url = url_; |
| 191 if (!loadTimes || !timing) { |
| 192 console.log("LOAD INCOMPLETE: " + url_); |
| 193 } else { |
| 194 console.log("LOAD complete: " + url_); |
| 195 result_.timing = timing; |
| 196 var baseTime = timing.navigationStart; |
| 197 CHECK(baseTime); |
| 198 result_.firstPaintTime = Math.max(0, |
| 199 Math.round((1000.0 * loadTimes.firstPaintTime) - baseTime)); |
| 200 } |
| 201 result_.readBytesKB = (chrome.benchmarking.counter(kTcpReadBytes) - |
| 202 initialReadBytes_) / 1024; |
| 203 result_.writeBytesKB = (chrome.benchmarking.counter(kTcpWriteBytes) - |
| 204 initialWriteBytes_) / 1024; |
| 205 result_.numRequests = (chrome.benchmarking.counter(kRequestCount) - |
| 206 initialRequestCount_); |
| 207 result_.numConnects = (chrome.benchmarking.counter(kConnectCount) - |
| 208 initialConnectCount_); |
| 209 setTimeout(function() { resultReadyCallback_(me_); }, postLoadGraceMs_); |
| 210 }; |
| 211 } |
| 212 |
| 213 // Load page sets and prepare performance results. |
| 214 function SessionLoader(resultsReadyCallback) { |
| 215 var me_ = this; |
| 216 var resultsReadyCallback_ = resultsReadyCallback; |
| 217 var pageSets_ = benchmarkConfiguration.pageSets; |
| 218 var iterations_ = window.iterations; |
| 219 var retries_ = window.retries; |
| 220 |
| 221 var pageLoaders_ = []; |
| 222 var resultsCollection_ = new ResultsCollection(); |
| 223 var loaderIndex_ = 0; |
| 224 var retryIndex_ = 0; |
| 225 var iterationIndex_ = 0; |
| 226 |
| 227 this.run = function() { |
| 228 me_.createLoaders_(); |
| 229 me_.loadPage_(); |
| 230 } |
| 231 |
| 232 this.getResultsCollection = function() { |
| 233 return resultsCollection_; |
| 234 } |
| 235 |
| 236 this.createLoaders_ = function() { |
| 237 // Each url becomes one benchmark. |
| 238 for (var i = 0; i < pageSets_.length; i++) { |
| 239 for (var j = 0; j < pageSets_[i].length; j++) { |
| 240 // Remove extra space at the beginning or end of a url. |
| 241 var url = pageSets_[i][j].trim(); |
| 242 // Alert about and ignore blank page which does not get loaded. |
| 243 if (url == "about:blank") { |
| 244 alert("blank page loaded!"); |
| 245 } else if (!url.match(/https?:\/\//)) { |
| 246 // Alert about url that is not in scheme http:// or https://. |
| 247 alert("Skipping url without http:// or https://: " + url); |
| 248 } else { |
| 249 var loader = new PageLoader(url, me_.handleResult_) |
| 250 if (j == 0) { |
| 251 // Clear all browser data for the first page in a sub list. |
| 252 loader.setClearAll(); |
| 253 } else { |
| 254 // Otherwise, only clear the connections. |
| 255 loader.setClearConnections(); |
| 256 } |
| 257 pageLoaders_.push(loader); |
| 258 } |
| 259 } |
| 260 } |
| 261 } |
| 262 |
| 263 this.loadPage_ = function() { |
| 264 console.log("LOAD url " + (loaderIndex_ + 1) + " of " + |
| 265 pageLoaders_.length + |
| 266 ", iteration " + (iterationIndex_ + 1) + " of " + |
| 267 iterations_); |
| 268 pageLoaders_[loaderIndex_].run(); |
| 269 } |
| 270 |
| 271 this.handleResult_ = function(loader) { |
| 272 var result = loader.result(); |
| 273 resultsCollection_.addResult(result); |
| 274 var totalTime = result.getTotalTime(); |
| 275 if (!totalTime && retryIndex_ < retries_) { |
| 276 retryIndex_++; |
| 277 console.log("LOAD retry, " + retryIndex_); |
| 278 } else { |
| 279 retryIndex_ = 0; |
| 280 console.log("RESULTS url " + (loaderIndex_ + 1) + " of " + |
| 281 pageLoaders_.length + |
| 282 ", iteration " + (iterationIndex_ + 1) + " of " + |
| 283 iterations_ + ": " + totalTime); |
| 284 loaderIndex_++; |
| 285 if (loaderIndex_ >= pageLoaders_.length) { |
| 286 iterationIndex_++; |
| 287 if (iterationIndex_ < iterations_) { |
| 288 loaderIndex_ = 0; |
| 289 } else { |
| 290 resultsReadyCallback_(me_); |
| 291 return; |
| 292 } |
| 293 } |
| 294 } |
| 295 me_.loadPage_(); |
| 296 } |
| 297 } |
| 298 |
| 299 function AddBenchmarkCallback(callback) { |
| 300 window.benchmarkCallback = callback; |
| 301 } |
| 302 |
| 303 function Run() { |
| 304 window.checkInterval = 500; |
| 305 window.loadInterval = 1000; |
| 306 window.timeout = 20000; // max ms before killing page. |
| 307 window.retries = 0; |
| 308 window.isRecordMode = benchmarkConfiguration.isRecordMode; |
| 309 if (window.isRecordMode) { |
| 310 window.iterations = 1; |
| 311 window.timeout = 40000; |
| 312 window.retries = 2; |
| 313 } else { |
| 314 window.iterations = benchmarkConfiguration["iterations"] || 3; |
| 315 } |
| 316 var sessionLoader = new SessionLoader(benchmarkCallback); |
| 317 console.log("pageSets: " + JSON.stringify(benchmarkConfiguration.pageSets)); |
| 318 sessionLoader.run(); |
| 319 } |
| 320 |
| 321 chrome.extension.onConnect.addListener(function(port) { |
| 322 port.onMessage.addListener(function(data) { |
| 323 if (data.message == "start") { |
| 324 window.benchmarkConfiguration = data.benchmark; |
| 325 Run() |
| 326 } |
| 327 }); |
| 328 }); |
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