test_profile_worker.html

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<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1428076

-->

<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"/>

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<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1428076">Mozilla Bug 1428076</a>

<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

<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

};

function workload() {

  // We start a worker and then terminate it right away to trigger our bug.

  info("Starting the worker...");

  const worker = new Worker("chrome://mochitests/content/chrome/tools/profiler/tests/chrome/file_worker.js");

  return new Promise(resolve => {

    worker.onmessage = () => {

      info("Got a message, terminating the worker.");

      worker.terminate();

      resolve();

};

});

runTest(settings, workload);

</script>

</body>

</html>