e3e81892a4
Apple currently objects to cleanupSome but agrees to shipping the rest of WeakRefs. Separate out cleanupSome to its own flag so the rest of WeakRefs may ship. Bug: v8:8179 Change-Id: I6159fc743c9cb658860d4260b0dcb95e54630fdc Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2141011 Commit-Queue: Shu-yu Guo <syg@chromium.org> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> Cr-Commit-Position: refs/heads/master@{#67070}
37 lines
1000 B
JavaScript
37 lines
1000 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-with-cleanup-some --expose-gc --noincremental-marking
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let cleanup_count = 0;
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let cleanup_holdings = [];
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let cleanup = function(holdings) {
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cleanup_holdings.push(holdings);
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++cleanup_count;
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}
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let fg = new FinalizationRegistry(cleanup);
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let key = {"k": "this is the key"};
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(function() {
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let o = {};
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weak_cell = fg.register(o, "holdings", key);
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// cleanupSome won't do anything since there are no reclaimed targets.
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fg.cleanupSome();
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assertEquals(0, cleanup_count);
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// Keep o alive to the end of the function, so that --stress-opt mode
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// is robust towards --gc-interval timing.
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return o;
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})();
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// GC will detect the WeakCell as dirty.
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gc();
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// Unregister the tracked object just before calling cleanupSome.
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fg.unregister(key);
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fg.cleanupSome();
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assertEquals(0, cleanup_count);
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