17a74ddd3d
PR-URL: https://github.com/nodejs/node/pull/49639 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
33 lines
1.1 KiB
JavaScript
33 lines
1.1 KiB
JavaScript
// Copyright 2022 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --expose-gc --noincremental-marking
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(async function () {
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let weakRef;
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(function () {
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const innerKey = Symbol('123');
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weakRef = new WeakRef(innerKey);
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})();
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// Since the WeakRef was created during this turn, it is not cleared by GC.
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// Here we invoke GC synchronously and, with conservative stack scanning, there is
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// a chance that the object is not reclaimed now. In any case, the WeakRef should
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// not be cleared.
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gc();
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assertNotEquals(undefined, weakRef.deref());
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// Trigger GC again in next task. Now the WeakRef is cleared.
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// We need to invoke GC asynchronously and wait for it to finish, so that
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// it doesn't need to scan the stack. Otherwise, the objects may not be
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// reclaimed because of conservative stack scanning and the test may not
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// work as intended.
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await gc({ type: 'major', execution: 'async' });
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assertEquals(undefined, weakRef.deref());
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})();
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