| <!DOCTYPE html> |
| <script src="../../resources/gc.js"></script> |
| <script src="../../resources/js-test.js"></script> |
| <script src="resources/shared.js"></script> |
| <script> |
| |
| description("Verify that that cursors weakly hold script value properties"); |
| |
| if (window.internals) { |
| indexedDBTest(prepareDatabase, onOpen); |
| } else { |
| testFailed('This test requires access to the Internals object'); |
| finishJSTest(); |
| } |
| |
| function prepareDatabase(evt) |
| { |
| db = event.target.result; |
| store = db.createObjectStore('store'); |
| store.put({value: 'value'}, ['key']); |
| } |
| |
| function onOpen(evt) |
| { |
| // evalAndLog() is not used as that generates new DOM nodes. |
| |
| db = evt.target.result; |
| tx = db.transaction('store'); |
| store = tx.objectStore('store'); |
| cursorRequest = store.openCursor(); |
| cursorRequest.onsuccess = function() { |
| cursor = cursorRequest.result; |
| }; |
| tx.oncomplete = function() { |
| db.close(); |
| |
| // Do initialization work in an inner function to avoid references to |
| // objects remaining live on this function's stack frame |
| // (http://crbug.com/595672/). |
| (function() { |
| // Try and induce a leak by a reference cycle from DOM to V8 and |
| // back. If the v8 value of cursor.key (etc) is only held by the |
| // cursor's V8 wrapper then there will be no leak. |
| cursor.key.cursor = cursor; |
| cursor.primaryKey.cursor = cursor; |
| cursor.value.cursor = cursor; |
| cursorObserver = internals.observeGC(cursor); |
| })(); |
| |
| cursorRequest = null; |
| cursor = null; |
| |
| asyncGC(function () { |
| shouldBeTrue("cursorObserver.wasCollected"); |
| finishJSTest(); |
| }); |
| }; |
| } |
| |
| |
| </script> |
