33 lines
1.1 KiB
JavaScript
33 lines
1.1 KiB
JavaScript
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// Copyright 2020 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: --allow-natives-syntax --harmony-sharedarraybuffer --harmony-atomics-waitasync
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(function test() {
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const sab = new SharedArrayBuffer(16);
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const i32a = new Int32Array(sab);
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const location = 0;
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(function createWorker() {
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const script = `onmessage = function(msg) {
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if (msg.sab) {
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const i32a = new Int32Array(msg.sab);
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// Start 2 async waits in the same location.
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const result1 = Atomics.waitAsync(i32a, ${location}, 0);
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const result2 = Atomics.waitAsync(i32a, ${location}, 0);
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postMessage('worker waiting');
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}
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}`;
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const w = new Worker(script, {type : 'string'});
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w.postMessage({sab: sab});
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const m = w.getMessage();
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assertEquals('worker waiting', m);
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w.terminateAndWait();
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})();
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const notify_return_value = Atomics.notify(i32a, location, 2);
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// No waiters got notified, since they got cleaned up before it.
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assertEquals(0, notify_return_value);
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})();
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