| OLD | NEW |
|---|
| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <script src="../../resources/js-test.js"></script> | 2 <script src="../../resources/js-test.js"></script> |
| 3 <script src="resources/shared.js"></script> | 3 <script src="resources/shared.js"></script> |
| 4 <script> | 4 <script> |
| 5 | 5 |
| 6 description("Verify that that cursors weakly hold script value properties"); | 6 description("Verify that that cursors weakly hold script value properties"); |
| 7 | 7 |
| 8 if (window.internals) { | 8 if (window.internals) { |
| 9 indexedDBTest(prepareDatabase, onOpen); | 9 indexedDBTest(prepareDatabase, onOpen); |
| 10 } else { | 10 } else { |
| (...skipping 14 matching lines...) Expand all Loading... |
| 25 | 25 |
| 26 db = evt.target.result; | 26 db = evt.target.result; |
| 27 tx = db.transaction('store'); | 27 tx = db.transaction('store'); |
| 28 store = tx.objectStore('store'); | 28 store = tx.objectStore('store'); |
| 29 cursorRequest = store.openCursor(); | 29 cursorRequest = store.openCursor(); |
| 30 cursorRequest.onsuccess = function() { | 30 cursorRequest.onsuccess = function() { |
| 31 cursor = cursorRequest.result; | 31 cursor = cursorRequest.result; |
| 32 }; | 32 }; |
| 33 tx.oncomplete = function() { | 33 tx.oncomplete = function() { |
| 34 db.close(); | 34 db.close(); |
| 35 | 35 |
| 36 // Try and induce a leak by a reference cycle from DOM to V8 and back. | 36 // Do initialization work in an inner function to avoid references to |
| 37 // If the v8 value of cursor.key (etc) is only held by the cursor's | 37 // objects remaining live on this function's stack frame |
| 38 // V8 wrapper then there will be no leak. | 38 // (http://crbug.com/595672/). |
| 39 cursor.key.cursor = cursor; | 39 (function() { |
| 40 cursor.primaryKey.cursor = cursor; | 40 // Try and induce a leak by a reference cycle from DOM to V8 and |
| 41 cursor.value.cursor = cursor; | 41 // back. If the v8 value of cursor.key (etc) is only held by the |
| 42 | 42 // cursor's V8 wrapper then there will be no leak. |
| 43 // Do not pass the object directly to observeGC function. This may | 43 cursor.key.cursor = cursor; |
| 44 // remain live on this function's stack preventing GC from collecting | 44 cursor.primaryKey.cursor = cursor; |
| 45 // it. Accessing the object inside an inner function will prevent any | 45 cursor.value.cursor = cursor; |
| 46 // unneeded references on this function's stack. | 46 cursorObserver = internals.observeGC(cursor); |
| 47 cursorObserver = internals.observeGC((() => {return cursor;})()); | 47 })(); |
| 48 | 48 |
| 49 cursorRequest = null; | 49 cursorRequest = null; |
| 50 cursor = null; | 50 cursor = null; |
| 51 | 51 |
| 52 gc(); | 52 gc(); |
| 53 | 53 |
| 54 shouldBeTrue("cursorObserver.wasCollected"); | 54 shouldBeTrue("cursorObserver.wasCollected"); |
| 55 finishJSTest(); | 55 finishJSTest(); |
| 56 }; | 56 }; |
| 57 } | 57 } |
| 58 | 58 |
| 59 | 59 |
| 60 </script> | 60 </script> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1999013002:
Modify some gc related layout tests to work with Ignition. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master