js/xpconnect/tests/chrome/test_watchpoints.xul@6474c204b198 (annotated)
js/xpconnect/tests/chrome/test_watchpoints.xul
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | <?xml version="1.0"?> |
| michael@0 | 2 | <?xml-stylesheet type="text/css" href="chrome://global/skin"?> |
| michael@0 | 3 | <?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?> |
| michael@0 | 4 | <!-- |
| michael@0 | 5 | https://bugzilla.mozilla.org/show_bug.cgi?id=693527 |
| michael@0 | 6 | --> |
| michael@0 | 7 | <window title="Mozilla Bug " |
| michael@0 | 8 | xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> |
| michael@0 | 9 | <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/> |
| michael@0 | 10 | |
| michael@0 | 11 | <!-- test results are displayed in the html:body --> |
| michael@0 | 12 | <body xmlns="http://www.w3.org/1999/xhtml"> |
| michael@0 | 13 | <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=" |
| michael@0 | 14 | target="_blank">Mozilla Bug 693527</a> |
| michael@0 | 15 | </body> |
| michael@0 | 16 | |
| michael@0 | 17 | <!-- test code goes here --> |
| michael@0 | 18 | <script type="application/javascript"> |
| michael@0 | 19 | <![CDATA[ |
| michael@0 | 20 | /** Test for Bug 693527 **/ |
| michael@0 | 21 | |
| michael@0 | 22 | let Cu = Components.utils; |
| michael@0 | 23 | let Ci = Components.interfaces; |
| michael@0 | 24 | |
| michael@0 | 25 | /* Create a weak reference, with a single-element weak map. */ |
| michael@0 | 26 | let make_weak_ref = function (obj) { |
| michael@0 | 27 | let m = new WeakMap; |
| michael@0 | 28 | m.set(obj, {}); |
| michael@0 | 29 | return m; |
| michael@0 | 30 | }; |
| michael@0 | 31 | |
| michael@0 | 32 | /* Check to see if a weak reference is dead. */ |
| michael@0 | 33 | let weak_ref_dead = function (r) { |
| michael@0 | 34 | return Cu.nondeterministicGetWeakMapKeys(r).length == 0; |
| michael@0 | 35 | } |
| michael@0 | 36 | |
| michael@0 | 37 | |
| michael@0 | 38 | let make_cycle = function () { |
| michael@0 | 39 | var p = document.createElement("p"); |
| michael@0 | 40 | p.children.x = p; |
| michael@0 | 41 | var f = function() { }; |
| michael@0 | 42 | p.watch("y", f); |
| michael@0 | 43 | var d = document.createElement("div"); |
| michael@0 | 44 | d.appendChild(p); |
| michael@0 | 45 | f.loop = d; |
| michael@0 | 46 | f.bar = {}; // observing f directly makes the leak go away even without the CC somehow |
| michael@0 | 47 | return make_weak_ref(f.bar); |
| michael@0 | 48 | }; |
| michael@0 | 49 | |
| michael@0 | 50 | var cycle_ref = make_cycle(); |
| michael@0 | 51 | |
| michael@0 | 52 | |
| michael@0 | 53 | /* set up for running precise GC/CC then checking the results */ |
| michael@0 | 54 | |
| michael@0 | 55 | SimpleTest.waitForExplicitFinish(); |
| michael@0 | 56 | |
| michael@0 | 57 | Cu.schedulePreciseGC(function () { |
| michael@0 | 58 | window.QueryInterface(Ci.nsIInterfaceRequestor) |
| michael@0 | 59 | .getInterface(Ci.nsIDOMWindowUtils) |
| michael@0 | 60 | .cycleCollect(); |
| michael@0 | 61 | window.QueryInterface(Ci.nsIInterfaceRequestor) |
| michael@0 | 62 | .getInterface(Ci.nsIDOMWindowUtils) |
| michael@0 | 63 | .garbageCollect(); |
| michael@0 | 64 | window.QueryInterface(Ci.nsIInterfaceRequestor) |
| michael@0 | 65 | .getInterface(Ci.nsIDOMWindowUtils) |
| michael@0 | 66 | .garbageCollect(); |
| michael@0 | 67 | |
| michael@0 | 68 | ok(weak_ref_dead(cycle_ref), "Garbage gray watchpoint cycle should be collected."); |
| michael@0 | 69 | |
| michael@0 | 70 | SimpleTest.finish(); |
| michael@0 | 71 | }); |
| michael@0 | 72 | |
| michael@0 | 73 | ]]> |
| michael@0 | 74 | </script> |
| michael@0 | 75 | </window> |
