16457b0ca0
Atomics.load and Atomics.store now accept string field names as the 2nd argument when the 1st argument is a shared struct. Currently these are implemented in C++ and not yet in CSA. Bug: v8:12547 Change-Id: Ideeafc13fb6a925540edf3dc17428c8e50bcee79 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3510837 Commit-Queue: Shu-yu Guo <syg@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Cr-Commit-Position: refs/heads/main@{#79431}
36 lines
1.1 KiB
JavaScript
36 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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//
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// Flags: --shared-string-table --harmony-struct
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"use strict";
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let S = new SharedStructType(['field']);
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(function TestPrimitivesUsingAtomics() {
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// All primitives can be stored in fields.
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let s = new S();
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for (let prim of [42, -0, undefined, null, true, false, "foo"]) {
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Atomics.store(s, 'field', prim);
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assertEquals(Atomics.load(s, 'field'), prim);
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}
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})();
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(function TestObjectsUsingAtomics() {
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let s = new S();
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// Shared objects cannot point to non-shared objects.
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assertThrows(() => { Atomics.store(s, 'field', []); });
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assertThrows(() => { Atomics.store(s, 'field', {}); });
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// Shared objects can point to other shared objects.
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let shared_rhs = new S();
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Atomics.store(s, 'field', shared_rhs);
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assertEquals(Atomics.load(s, 'field'), shared_rhs);
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})();
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(function TestNotExtensibleUsingAtomics() {
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let s = new S();
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// Shared structs are non-extensible.
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assertThrows(() => { Atomics.store(s, 'nonExistent', 42); });
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})();
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