| <body> |
| <p>Test that MessagePort messages are delivered even if both ports are inaccessible from JS any more.</p> |
| <p>Should say PASS twice.</p> |
| <pre id=log></pre> |
| <script> |
| 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 log(message) |
| { |
| document.getElementById("log").innerHTML += message + "<br>"; |
| } |
| |
| if (window.layoutTestController) { |
| layoutTestController.dumpAsText(); |
| layoutTestController.waitUntilDone(); |
| } |
| |
| function test1() |
| { |
| var channel = new MessageChannel; |
| |
| channel.port1.onmessage = function(evt) { log("PASS: message delivered. Port: " + evt.target); test2(); } |
| channel.port2.postMessage("msg"); |
| |
| channel = 0; |
| gc(); |
| } |
| |
| function test2() |
| { |
| var channel = new MessageChannel; |
| |
| channel.port2.close(); |
| |
| channel = 0; |
| gc(); |
| log("PASS: port closed."); |
| if (window.layoutTestController) |
| layoutTestController.notifyDone(); |
| } |
| |
| test1(); |
| |
| </script> |
| </body> |
