workers_memory.html

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<!DOCTYPE html>

<html>

<head>

  <meta charset="UTF-8">

  <title>

    Main frame for test browser_aboutperformance.js

  </title>

</head>

<body>

<p>

Result: <span id="result">?</span>

</p>

</body>

<script>

  var result = document.querySelector('#result');

  var worker = new Worker("workers_memory_script.js");

  var n = 1;

  var waitPromise = new Promise(ready => {

    worker.onmessage = function(event) {

      result.textContent = event.data;

      ready();

      // We seem to need to keep the worker doing something to keep the

      // memory usage up.

      setTimeout(() => {

        n++;

        worker.postMessage(n);

      }, 1000);

};

});

  worker.postMessage(n);

  window.waitForTestReady = async () => {

    await waitPromise;

};

</script>

</html>