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performance-test.js
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performance-test.js
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var initialize_TimeTracker = function() {
InspectorTest.runPerformanceTest = function(perfTest, executeTime, callback)
{
var Timer = function(test, callback)
{
this._callback = callback;
this._test = test;
this._times = {};
this._sizes = {};
this._testStartTime = new Date();
this._heapSizeDeltas = [];
this._jsHeapSize = this._getJSHeapSize();
}
Timer.prototype = {
start: function(name)
{
return {name: name, startTime: new Date()};
},
finish: function(cookie)
{
var endTime = new Date();
if (!this._times[cookie.name])
this._times[cookie.name] = [];
this._times[cookie.name].push(endTime - cookie.startTime);
},
reportSize: function(name, size)
{
if (!this._sizes[name])
this._sizes[name] = [];
this._sizes[name].push(size);
},
_getJSHeapSize: function()
{
if (window.gc) {
window.gc();
window.gc();
}
return console.memory.usedJSHeapSize;
},
done: function(groupName)
{
var newJSHeapSize = this._getJSHeapSize();
this._heapSizeDeltas.push(newJSHeapSize - this._jsHeapSize);
this._jsHeapSize = newJSHeapSize;
var time = new Date();
if (time - this._testStartTime < executeTime)
this._runTest();
else {
if (this._complete)
return;
this._complete = true;
this._dump(groupName);
if (this._callback)
this._callback();
else
InspectorTest.completeTest();
}
},
_runTest: function()
{
if (this._guard) {
setTimeout(this._runTest.bind(this), 0);
return;
}
this._guard = true;
var safeTest = InspectorTest.safeWrap(this._test);
safeTest(this);
this._guard = false;
},
_dump: function(groupName)
{
for (var testName in this._times)
InspectorTest.dumpTestStats(groupName, testName, this._times[testName], "ms");
for (var testName in this._sizes)
InspectorTest.dumpTestStats(groupName, testName, this._sizes[testName], "kB", 1024);
var url = WebInspector.inspectedPageURL;
var regExp = /([^\/]+)\.html/;
var matches = regExp.exec(url);
InspectorTest.dumpTestStats("heap-delta", matches[1], this._heapSizeDeltas, "kB", 1024);
},
}
InspectorTest.timer = new Timer(perfTest, callback);
InspectorTest.timer._runTest();
}
InspectorTest.measureFunction = function(object, functionName)
{
function measure() {
var timer = InspectorTest.timer;
var cookie;
if (timer)
cookie = timer.start(functionName);
var result = func.apply(this, arguments);
if (timer)
timer.finish(cookie);
return result;
}
var func = object[functionName];
object[functionName] = measure;
}
InspectorTest.mark = function(markerName)
{
var timer = InspectorTest.timer;
if (!timer)
return;
if (InspectorTest.lastMarkCookie)
timer.finish(InspectorTest.lastMarkCookie);
InspectorTest.lastMarkCookie = markerName ? timer.start(markerName) : null;
}
InspectorTest.dumpTestStats = function(groupName, testName, samples, units, divider)
{
divider = divider || 1;
var stripNResults = Math.floor(samples.length / 10);
samples.sort(function(a, b) { return a - b; });
var sum = 0;
for (var i = stripNResults; i < samples.length - stripNResults; ++i)
sum += samples[i];
InspectorTest.addResult("RESULT " + groupName + ': ' + testName + "= " + Math.floor(sum / (samples.length - stripNResults * 2) / divider) + " " + units);
}
InspectorTest.addBackendResponseSniffer = function(object, methodName, override, opt_sticky)
{
var originalMethod = InspectorTest.override(object, methodName, backendCall, opt_sticky);
function backendCall()
{
var args = Array.prototype.slice.call(arguments);
var callback = (args.length && typeof args[args.length - 1] === "function") ? args.pop() : 0;
args.push(function() {
callback.apply(null, arguments);
override.apply(null, arguments);
});
originalMethod.apply(object, args);
}
}
}