mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/* See https://bugzilla.mozilla.org/show_bug.cgi?id=317304 */
|
|
|
|
function run_test()
|
|
{
|
|
// Bug 712649: Calling getWeakReference(null) should work.
|
|
try {
|
|
var nullWeak = Components.utils.getWeakReference(null);
|
|
do_check_true(nullWeak.get() === null);
|
|
} catch (e) {
|
|
do_check_true(false);
|
|
}
|
|
|
|
var obj = { num: 5, str: 'foo' };
|
|
var weak = Components.utils.getWeakReference(obj);
|
|
|
|
do_check_true(weak.get() === obj);
|
|
do_check_true(weak.get().num == 5);
|
|
do_check_true(weak.get().str == 'foo');
|
|
|
|
// Force garbage collection
|
|
Components.utils.forceGC();
|
|
|
|
// obj still references the object, so it should still be accessible via weak
|
|
do_check_true(weak.get() === obj);
|
|
do_check_true(weak.get().num == 5);
|
|
do_check_true(weak.get().str == 'foo');
|
|
|
|
// Clear obj's reference to the object and force garbage collection. To make
|
|
// sure that there are no instances of obj stored in the registers or on the
|
|
// native stack and the conservative GC would not find it we force the same
|
|
// code paths that we used for the initial allocation.
|
|
obj = { num: 6, str: 'foo2' };
|
|
var weak2 = Components.utils.getWeakReference(obj);
|
|
do_check_true(weak2.get() === obj);
|
|
|
|
Components.utils.forceGC();
|
|
|
|
// The object should have been garbage collected and so should no longer be
|
|
// accessible via weak
|
|
do_check_true(weak.get() === null);
|
|
}
|