| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../../../resources/gc.js"></script> |
| <script src="../../../resources/js-test.js"></script> |
| <script src='../resources/worker-util.js'></script> |
| </script> |
| <body> |
| <script> |
| description('Verify that creation of a worker does not leak its creating document.'); |
| |
| window.jsTestIsAsync = true; |
| |
| function log(message) |
| { |
| document.getElementById("console").innerHTML += message + "<br>"; |
| } |
| |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| // Set this number as high as possible without introducing timeouts in debug builds. |
| // Reducing it does not require rebaselines. |
| var numIterations = 6; |
| |
| var currentIteration = 0; |
| var iframe = null; |
| var numLiveAtStart = 0; |
| var numLiveAtEnd = 0; |
| |
| window.onmessage = function(event) { |
| if (event.data == "done") { |
| runOneIteration(); |
| } |
| }; |
| |
| function startTest() |
| { |
| gc(); |
| if (window.internals && internals.numberOfLiveDocuments) { |
| numLiveAtStart = internals.numberOfLiveDocuments(); |
| // Depending on which tests ran before this one in DumpRenderTree, |
| // their Document instances may not have been fully cleaned up yet. |
| // When this test is run in isolation, there should be only one |
| // live document at this point. |
| runOneIteration(); |
| } else { |
| debug("internals.numberOfLiveDocuments not available -- no point in running test"); |
| finishTest(); |
| } |
| } |
| |
| function runOneIteration() { |
| if (currentIteration < numIterations) { |
| ++currentIteration; |
| |
| var createdIframe = false; |
| if (!iframe) { |
| iframe = document.createElement("iframe"); |
| createdIframe = true; |
| } |
| iframe.setAttribute("src", "resources/worker-document-leak-iframe.html"); |
| if (createdIframe) |
| document.body.appendChild(iframe); |
| return; |
| } |
| asyncGC(finishTest); |
| } |
| |
| function finishTest() |
| { |
| gc(); |
| |
| if (window.internals && internals.numberOfLiveDocuments) { |
| numLiveAtEnd = internals.numberOfLiveDocuments(); |
| // Under no circumstances should the number of live documents |
| // at the end be more than 1 greater than the number at the |
| // beginning (because of the iframe). |
| if (numLiveAtEnd > numLiveAtStart + 1) { |
| testFailed("leaked documents during test run (started with " + numLiveAtStart + ", ended with " + numLiveAtEnd + ")"); |
| } else { |
| testPassed("did not leak documents during test run"); |
| } |
| } |
| finishJSTest(); |
| } |
| |
| window.onload = startTest; |
| </script> |
| </body> |
| </html> |
