| <body> |
| <p>Test MessagePort messaging/entangle/detangle across threads. Should print "SUCCESS" when done.</p> |
| <div id=result></div> |
| <script> |
| function log(message) |
| { |
| document.getElementById("result").innerHTML += message + "<br>"; |
| } |
| |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| |
| var channel = new MessageChannel(); |
| var numMessages = 50000; |
| |
| // Create a channel which we will use to clone and re-clone one end of a |
| // MessageChannel. |
| var cloneChannel = new MessageChannel(); |
| var stopCloning = false; |
| cloneChannel.port1.onmessage = cloneChannel.port2.onmessage = resendPort; |
| cloneChannel.port1.start(); |
| cloneChannel.port2.start(); |
| cloneChannel.port1.postMessage("", [channel.port2]); |
| |
| // Create worker with other end of port and have it send messages back to us |
| // while we clone our end of the port repeatedly. |
| var worker = new Worker("resources/worker-cloneport.js"); |
| worker.postMessage("postBack " + numMessages, [channel.port1]); |
| |
| // Test posting back 50000 messages, make sure ordering is fine |
| worker.onmessage = function(evt) { |
| if (evt.data == "postBackDone") { |
| stopCloning = true; |
| } else { |
| // Log message from worker |
| log(evt.data); |
| } |
| } |
| |
| // Keep cloning the passed port until we're told to stop. |
| function resendPort(evt) |
| { |
| if (!evt.ports) |
| log("FAIL: evt.ports not set"); |
| if (evt.ports.length != 1) |
| log("FAIL: ports.length = " + evt.ports.length); |
| |
| if (!stopCloning) { |
| evt.target.postMessage("", evt.ports); |
| } else { |
| // Make sure the messages arrived in order. |
| var itemNum = 0; |
| // Queue up a task to execute once the messages have been processed. The timeout value is set fairly large to account for Chromium's different message delivery architecture. |
| // This only fires in the case of a test failure, so it does not slow down test running. |
| var timer = setTimeout(function() { |
| log("FAILURE: Received: " + itemNum + " events - expected: " + numMessages); |
| reportDone(); |
| }, 8000); |
| evt.ports[0].onmessage = function(event) { |
| var done = false; |
| if (event.data == itemNum) { |
| itemNum++; |
| if (itemNum == numMessages) { |
| log("SUCCESS - received " + numMessages + " messages."); |
| done = true; |
| } |
| } else { |
| log("FAILURE: Out of order message: expected #: " + itemNum + ", received: " + event.data); |
| done = true; |
| } |
| clearTimeout(timer); |
| if (done) { |
| gc(); |
| setTimeout(reportDone, 100); // Make sure no unexpected events come in. |
| } |
| } |
| evt.ports[0].start(); |
| } |
| } |
| |
| function gc() |
| { |
| if (window.GCController) |
| return GCController.collect(); |
| |
| for (var i = 0; i < 10000; i++) { // force garbage collection (FF requires about 9K allocations before a collect). |
| var s = new String("abc"); |
| } |
| } |
| function reportDone() |
| { |
| log("DONE"); |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| |
| </script> |
| </body> |
| </html> |
