third_party/WebKit/LayoutTests/fast/workers/worker-init.html

   1 <body>
   2 <p>Test that worker object is not garbage collected if there is a message from
   3 worker context. Should print "SUCCESS".
   4 <a href="https://bugs.webkit.org/show_bug.cgi?id=62446">Bug 62446</a></p>
   5 <div id=result></div>
   6 <script>
   7 function log(message)
   8 {
   9     document.getElementById("result").innerHTML += message + "<br>";
  10 }
  11
  12 function gc()
  13 {
  14     if (window.GCController)
  15         return GCController.collect();
  16
  17     var head;
  18     for (var i = 0; i < 10000; i++) {
  19         var newHead = new Array(1000);
  20         newHead[0] = head;
  21         head = newHead;
  22     }
  23 }
  24
  25 if (window.testRunner) {
  26     testRunner.dumpAsText();
  27     testRunner.waitUntilDone();
  28 }
  29
  30 var interval = setInterval(gc, 0);
  31
  32 var worker = new Worker('resources/worker-init.js');
  33 worker.onmessage = function(evt) {
  34     log(evt.data);
  35     clearInterval(interval);
  36     if (window.testRunner)
  37         testRunner.notifyDone();
  38 }
  39 worker = 0;
  40 gc();
  41 </script>
  42 </body>
  43 </html>