6023de85da
Change-Id: I1a7afc332dc2f1c4d4087650f116484437f7a09a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2285851 Auto-Submit: Shu-yu Guo <syg@chromium.org> Commit-Queue: Marja Hölttä <marja@chromium.org> Reviewed-by: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#68731}
43 lines
1.1 KiB
JavaScript
43 lines
1.1 KiB
JavaScript
// Copyright 2018 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: --harmony-weak-refs --expose-gc --noincremental-marking
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let cleanup_called = false;
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let cleanup = function(holdings) {
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assertFalse(cleanup_called);
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let holdings_list = [];
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holdings_list.push(holdings);
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assertEquals(1, holdings_list.length);
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assertEquals("holdings", holdings_list[0]);
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cleanup_called = true;
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}
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let fg = new FinalizationRegistry(cleanup);
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let weak_ref;
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(function() {
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let o = {};
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weak_ref = new WeakRef(o);
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fg.register(o, "holdings");
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})();
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// Since the WeakRef was created during this turn, it is not cleared by GC. The
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// pointer inside the FinalizationRegistry is not cleared either, since the WeakRef
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// keeps the target object alive.
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gc();
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(function() {
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assertNotEquals(undefined, weak_ref.deref());
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})();
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// Trigger gc in next task
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setTimeout(() => {
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gc();
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// Check that cleanup callback was called in a follow up task
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setTimeout(() => {
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assertTrue(cleanup_called);
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assertEquals(undefined, weak_ref.deref());
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}, 0);
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}, 0);
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