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

   1 <body>
   2 <p>Test worker garbage collection. Should print "SUCCESS".</p>
   3 <div id=result></div>
   4 <script>
   5 function log(message)
   6 {
   7     document.getElementById("result").innerHTML += message + "<br>";
   8 }
   9
  10 function gc()
  11 {
  12     if (window.GCController)
  13         return GCController.collect();
  14
  15     for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
  16         var s = new String("abc");
  17     }
  18 }
  19
  20 if (window.testRunner) {
  21     testRunner.dumpAsText();
  22     testRunner.waitUntilDone();
  23 }
  24
  25 var interval = setInterval(gc, 0);
  26
  27 var worker = new Worker('resources/worker-common.js');
  28 worker.postMessage("ping");
  29 worker.onmessage = function(evt) {
  30     this.postMessage("ping");
  31     this.onmessage = function() {
  32         log("SUCCESS");
  33         clearInterval(interval);
  34         if (window.testRunner)
  35             testRunner.notifyDone();
  36     }
  37
  38 }
  39 worker = 0;
  40 gc();
  41 </script>
  42 </body>
  43 </html>