queued_shared_worker_shutdown.html | Explore in Territory

<html>
<head>
<script src="worker_utils.js"></script>
</head>
<body>
<div id=result></div>
<script>
function log(message)
{
  document.getElementById("result").innerHTML += message + "<br>";
}

var url = document.location.toString();
var num_workers = parseInt(url.substr(url.search("count=") + 6));

if (!num_workers) {
  log("No count= parameter provided - test aborted");
} else {
  for (var i = 0; i < num_workers ; ++i) {
    createWorker(i);
  }

  // Create two extra workers - these should both be queued, and launched as a
  // single instance when we shutdown a worker.
  createWorker(num_workers);
  createWorker(num_workers);
}

var workers_created = 0;
function createWorker(i) {
  var worker = new SharedWorker("worker_common.js?id=" + i);
  worker.port.postMessage("ping");
  worker.port.onmessage = function() {
    workers_created++;
    log("worker " + i + " started");
    if (workers_created == num_workers) {
       // We've created all of our workers. Let's shut down the most recent one
       // and see if we startup the queued worker.
       log("Shutting down worker " + i);
       worker.port.postMessage("close");
    } else if (workers_created == (num_workers+2)) {
       // created the last worker
       log("SUCCESS: queued worker created");
       onSuccess();
    }
  }
}
</script>

</body>
</html>
chromium/content/test/data/workers/queued_shared_worker_shutdown.html
