6151ae0127
Atomics.load, Atomics.store, and Atomics.exchange now accept shared array objects as their 1st argument. Currently these are implemented in C++ and not yet in CSA. Bug: v8:12547 Change-Id: I54ed8816a696a4f45dda964739b1cfd917d39dc0 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3723974 Reviewed-by: Shu-yu Guo <syg@chromium.org> Reviewed-by: Camillo Bruni <cbruni@chromium.org> Commit-Queue: Luis Fernando Pardo Sixtos <lpardosixtos@microsoft.com> Cr-Commit-Position: refs/heads/main@{#81537}
64 lines
1.7 KiB
JavaScript
64 lines
1.7 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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(function TestPrimitivesUsingAtomics() {
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// All primitives can be stored in fields.
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const prims = [42, -0, undefined, null, true, false, 'foo'];
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let arr = new SharedArray(1);
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for (let prim of prims) {
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Atomics.store(arr, 0, prim);
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assertEquals(Atomics.load(arr, 0), prim);
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}
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for (let prim1 of prims) {
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for (let prim2 of prims) {
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arr[0] = prim1;
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assertEquals(Atomics.exchange(arr, 0, prim2), prim1);
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assertEquals(arr[0], prim2);
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}
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}
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})();
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(function TestObjectsUsingAtomics() {
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let arr = new SharedArray(1);
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// Shared objects cannot point to non-shared objects.
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assertThrows(() => {
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Atomics.store(arr, 0, []);
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});
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assertThrows(() => {
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Atomics.store(arr, 0, {});
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});
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// Shared objects can point to other shared objects.
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let shared_rhs = new SharedArray(10);
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Atomics.store(arr, 0, shared_rhs);
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assertEquals(Atomics.load(arr, 0), shared_rhs);
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let Struct = new SharedStructType(['field']);
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shared_rhs = new Struct();
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Atomics.store(arr, 0, shared_rhs);
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assertEquals(Atomics.load(arr, 0), shared_rhs);
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let shared_rhs2 = new SharedArray(10);
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assertEquals(Atomics.exchange(arr, 0, shared_rhs2), shared_rhs);
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assertEquals(arr[0], shared_rhs2);
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})();
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(function TestOutOfBounds() {
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let arr = new SharedArray(1);
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// Shared structs are non-extensible.
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assertThrows(() => {
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Atomics.store(arr, 2, 42);
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});
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assertThrows(() => {
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Atomics.store(arr, -1, 42);
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});
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assertThrows(() => {
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Atomics.store(arr, 'field', 42);
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});
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})();
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