b839ed4f24
These tests rely on dropping references to objects either explicitly ("o =
null;") or implicitly ("o goes out of scope") and then doing gc. It's essential
that we haven't already marked the WeakCell pointing to o and marked it alive
before dropping the reference.
BUG=v8:8179
Change-Id: Ie0b73f05c4baa937cf6f28325454ff9087a71a2c
Reviewed-on: https://chromium-review.googlesource.com/c/1306437
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57115}
35 lines
1016 B
JavaScript
35 lines
1016 B
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 r = Realm.create();
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let cleanup = Realm.eval(r, "var stored_global; let cleanup = new Proxy(function() { stored_global = globalThis;}, {}); cleanup");
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let realm_global_this = Realm.eval(r, "globalThis");
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let wf = new WeakFactory(cleanup);
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// Create an object and a WeakCell pointing to it. The object needs to be inside
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// a closure so that we can reliably kill them!
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let weak_cell;
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(function() {
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let object = {};
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weak_cell = wf.makeCell(object);
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// object goes out of scope.
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})();
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gc();
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// Assert that the cleanup function was called in its Realm.
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let timeout_func = function() {
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let stored_global = Realm.eval(r, "stored_global;");
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assertNotEquals(stored_global, globalThis);
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assertEquals(stored_global, realm_global_this);
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}
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setTimeout(timeout_func, 0);
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