| <!DOCTYPE html> |
| <body> |
| <script src="../../resources/gc.js"></script> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| description("MessagePorts (and their execution contexts) should be collected by GC once close() has been called on them"); |
| |
| window.jsTestIsAsync = true; |
| |
| function runGCAndTest() { |
| asyncGC(function() { |
| shouldBeTrue("iframeDocGC.wasCollected"); |
| finishJSTest(); |
| }); |
| } |
| |
| window.onmessage = function(evt) { |
| iframeDocGC = internals.observeGC(document.querySelector('iframe').contentDocument); |
| document.querySelector('iframe').remove(); |
| // The iframe is reachable via evt.source, and evt is on the |
| // stack. Force a GC upon return from the event handler, so |
| // that it no longer will be in scope and the iframe can |
| // be GCed. |
| setTimeout(runGCAndTest, 0); |
| } |
| </script> |
| <iframe src="resources/message-port-gc-closed-iframe.html"></iframe> |
| </body> |
