31 lines
1.1 KiB
JavaScript
31 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 result = Atomics.waitAsync(i32a, 0, 0);
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assertEquals(true, result.async);
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assertTrue(result.value instanceof Promise);
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assertEquals(1, %AtomicsNumWaitersForTesting(i32a, 0));
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assertEquals(0, %AtomicsNumUnresolvedAsyncPromisesForTesting(i32a, 0));
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let resolved = false;
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result.value.then(
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(value) => { assertEquals("ok", value); resolved = true; },
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() => { assertUnreachable(); });
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const notify_return_value = Atomics.notify(i32a, 0, 1);
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assertEquals(1, notify_return_value);
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assertEquals(0, %AtomicsNumWaitersForTesting(i32a, 0));
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assertEquals(1, %AtomicsNumUnresolvedAsyncPromisesForTesting(i32a, 0));
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setTimeout(()=> {
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assertTrue(resolved);
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assertEquals(0, %AtomicsNumUnresolvedAsyncPromisesForTesting(i32a, 0));
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}, 0);
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})();
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