| description( |
| "This test checks whether the GC collects after string appends." |
| ); |
| |
| // FIXME: This test appears to be highly tied to the details of how JS strings report memory |
| // cost to the garbage collector. It should be improved to be less tied to these implementation details. |
| // <https://bugs.webkit.org/show_bug.cgi?id=20871> |
| |
| if (window.layoutTestController) |
| layoutTestController.dumpAsText(); |
| |
| if (window.GCController) |
| GCController.collect(); |
| |
| |
| // str has 150 chars in it (which is greater than the limit of the GC to ignore which I believe is at 128). |
| var str = "123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890"; |
| var count = 500; |
| for (var i = 0; i < count; ++i) { |
| str += "b"; |
| } |
| |
| // str has 128 chars in it. |
| str = "123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890"; |
| count = 10; |
| for (var i = 0; i < count; ++i) { |
| str += str; |
| } |
| |
| var jsObjCount = 0; |
| if (window.GCController) |
| jsObjCount = GCController.getJSObjectCount(); |
| |
| if (jsObjCount <= 500 && jsObjCount > 0) |
| testPassed("Garbage Collector triggered") |
| else |
| testFailed("Garbage Collector NOT triggered. Number of JSObjects: " + jsObjCount); |
| |
| var successfullyParsed = true; |