firefox-main/tools/profiler/tests/chrome/test_profile_worker.html (file symbol)

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Test Info: Warnings

<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1428076</title>
<link rel="stylesheet" type="text/css" href="chrome://global/skin"/>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
</head>
<body>
<script type="application/javascript" src="profiler_test_utils.js"></script>
<script type="application/javascript">
/* globals runTest */
"use strict";
const settings = {
entries: 1000000, // 9MB
interval: 1, // ms
features: ["js", "stackwalk", "cpu"],
threads: ["GeckoMain", "Compositor", "Worker"], // most common combination
};
const workerCode = `
console.log('hello world');
setTimeout(() => postMessage('message from worker'), 50);
`;
function startWorker() {
// We use a Blob for the worker content to avoid an external JS file, and data
// URLs seem to be blocked in a chrome environment.
const workerContent = new Blob(
[ workerCode ],
{ type: "application/javascript" }
);
const blobURL = URL.createObjectURL(workerContent);
// We start a worker and then terminate it right away to trigger our bug.
info("Starting the worker...");
const myWorker = new Worker(blobURL);
return { worker: myWorker, url: blobURL };
}
function workload() {
const { worker, url } = startWorker();
return new Promise(resolve => {
worker.onmessage = () => {
info("Got a message, terminating the worker.");
worker.terminate();
URL.revokeObjectURL(url);
resolve();
};
});
}
runTest(settings, workload);
</script>
</body>
</html>