| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <script src="../../resources/js-test-pre.js"></script> | |
| <script> | |
| description("Tests that recursive calls to MessagePort.postMessage() do not preempt timers."); | |
| jsTestIsAsync = true; | |
| function simulateSetImmediate() | |
| { | |
| var channel = new MessageChannel(); | |
| // Use a fifo linked list to call callbacks in the right order. | |
| var head = {}; | |
| var tail = head; | |
| channel['port1'].onmessage = function() { | |
| if (head.next != null) { | |
| head = head.next; | |
| var cb = head.cb; | |
| head.cb = null; | |
| cb(); | |
| } | |
| }; | |
| return function(cb) { | |
| tail.next = {cb: cb}; | |
| tail = tail.next; | |
| channel['port2'].postMessage(0); | |
| }; | |
| } | |
| window.setImmediate = simulateSetImmediate(); | |
| var shouldExit = false; | |
| function iterate() { | |
| if (shouldExit) { | |
| testPassed("Timer has fired."); | |
| finishJSTest(); | |
| return; | |
| } | |
| setImmediate(iterate); | |
| } | |
| setImmediate(iterate); | |
| setTimeout(function() { | |
| shouldExit = true; | |
| }, 10); | |
| </script> | |
| <script src="../../resources/js-test-post.js"></script> | |
| </body> | |
| </html> |