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<style>
#options {
position: absolute;
background-color: #FFFFCC;
display: none;
font-family: "Courier New";
font-size: 9pt;
padding: 5px;
border: 1px solid #CCCC88;
z-index: 3;
}
</style>
<script>
// Round a number to the 1's place.
function formatNumber(str) {
str += '';
if (str == '0') {
return 'N/A ';
}
var x = str.split('.');
var x1 = x[0];
var x2 = x.length > 1 ? '.' + x[1] : '';
var regex = /(\d+)(\d{3})/;
while (regex.test(x1)) {
x1 = x1.replace(regex, '$1' + ',' + '$2');
}
return x1;
}
// Configuration and results are stored globally.
window.iterations = 10;
window.clearConnections = true;
window.clearCache = true;
window.results = {};
window.results.data = new Array();
window.testUrl = "";
window.windowId = 0;
var optionsForm = 0;
function show_options() {
// This functionality is a bit fragile, probably due to the extension API.
// If we open the window from within the getSelected() callback, then the
// window opens in a new window rather than a new tab (is that a bug?).
// If we open the window before we call getSelected(), then the selected
// tab URL will be NULL, because the page won't have loaded yet, but it will
// be the selected tab. So, we do this weird thing where we first call
// get selected, knowing that it is asynchronous. Then we open the window,
// and finally when the callback occurs for getSelected, the window will
// be created and we can use it.
chrome.tabs.getSelected(windowId, function(tab) {
window.testUrl = tab.url;
optionsForm.setUrl(window.testUrl);
});
optionsForm = window.open("options.html", "optionswindow");
}
function Benchmark() {
var runCount_ = 0;
var count_;
var totalTime_;
var lastWin_;
var me_ = this;
var current_;
var initialReadBytes_;
var initialWriteBytes_;
// Start a test run
this.start = function(url) {
// Check if a run is already in progress.
if (me_.isRunning()) {
return;
}
console.log("Starting test for url: " + url);
runCount_ = window.iterations;
count_ = 0;
totalTime_ = 0;
lastWin_ = 0;
current_ = {};
current_.url = url;
current_.docLoadResults = new Array(); // times to docload
current_.paintResults = new Array(); // times to paint
current_.totalResults = new Array(); // times to complete load
initialReadBytes = chrome.benchmarking.counter("tcp.read_bytes");
initialWriteBytes = chrome.benchmarking.counter("tcp.write_bytes");
me_.runPage();
}
// Is the benchmark currently in progress.
this.isRunning = function() {
return runCount_ > 0;
}
// Called when the test run completes.
this.finish = function() {
lastWin_.close();
lastWin_ = 0;
// Record some more stats.
current_.bytesRead = chrome.benchmarking.counter("tcp.read_bytes") -
initialReadBytes;
current_.bytesWritten = chrome.benchmarking.counter("tcp.write_bytes") -
initialWriteBytes;
current_.totalTime = totalTime_;
// push the result
window.results.data.push(current_);
current_ = 0;
// show the latest
show_options();
}
// Update the UI after a test run.
this.displayResults = function() {
var span = document.getElementById("result");
var score = 0;
if (count_ > 0) {
score = totalTime_ / count_;
}
span.innerHTML = score.toFixed(1) + " (" + (runCount_) + ")";
}
// Run a single page in the benchmark
this.runPage = function() {
if (window.clearCache) {
chrome.benchmarking.clearCache();
}
if (window.clearConnections) {
chrome.benchmarking.closeConnections();
}
if (lastWin_) {
lastWin_.location = current_.url;
} else {
lastWin_ = window.open(current_.url);
}
}
// Called when a page finishes loading.
this.pageFinished = function(csi) {
var docLoadTime =
Math.round((csi.finishDocumentLoadTime - csi.startLoadTime) * 1000.0);
var paintTime =
Math.round((csi.firstPaintTime - csi.startLoadTime) * 1000.0);
var totalTime =
Math.round((csi.finishLoadTime - csi.startLoadTime) * 1000.0);
// Record the result
current_.docLoadResults.push(docLoadTime);
current_.paintResults.push(paintTime);
current_.totalResults.push(totalTime);
// For our toolbar counters
totalTime_ += totalTime;
count_++;
if (--runCount_ > 0) {
setTimeout(me_.runPage, 100);
} else {
me_.finish();
}
// Update the UI
me_.displayResults();
}
}
var benchmarks = new Array();
chrome.extension.onConnect.addListener(function(port) {
port.onMessage.addListener(function(data) {
if (data.message == "load") {
var benchmark = benchmarks[data.url];
if (benchmark != undefined && benchmark.isRunning()) {
benchmark.pageFinished(data.values);
}
}
});
});
function run() {
show_options();
var urls = testUrl.split(",");
for (var i = 0; i < urls.length; i++) {
var benchmark = new Benchmark();
benchmarks[urls[i]] = benchmark;
benchmark.start(urls[i]); // XXXMB - move to constructor
}
}
// Run at startup
chrome.windows.getCurrent(function(currentWindow) {
window.windowId = currentWindow.id;
});
</script>
<style>
#result {
color: green;
text-align: center;
vertical-align: center;
}
</style>
<div id="bench">
<img src="stopwatch.jpg" height="25" width="25" align=top onclick="show_options()">
<span id="result"></span>
</div>
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