mirror of https://github.com/tc39/test262.git
55 lines
1.5 KiB
JavaScript
55 lines
1.5 KiB
JavaScript
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// Copyright (C) 2020 Rick Waldron. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-atomics.waitasync
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description: >
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Test that Atomics.waitAsync returns the right result when it was awoken before
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a timeout
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flags: [async]
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includes: [atomicsHelper.js]
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features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics]
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---*/
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const RUNNING = 1;
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const TIMEOUT = $262.agent.timeouts.huge;
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const i32a = new Int32Array(
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new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
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);
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$262.agent.start(`
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$262.agent.receiveBroadcast(async (sab) => {
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const i32a = new Int32Array(sab);
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Atomics.add(i32a, ${RUNNING}, 1);
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const before = $262.agent.monotonicNow();
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const unpark = await Atomics.waitAsync(i32a, 0, 0, ${TIMEOUT}).value;
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const duration = $262.agent.monotonicNow() - before;
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$262.agent.report(duration);
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$262.agent.report(unpark);
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$262.agent.leaving();
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});
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`);
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$262.agent.safeBroadcastAsync(i32a, RUNNING, 1).then(async (agentCount) => {
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assert.sameValue(agentCount, 1);
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assert.sameValue(Atomics.notify(i32a, 0), 1, 'Atomics.notify(i32a, 0) returns 1');
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const lapse = await $262.agent.getReportAsync();
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assert(
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lapse < TIMEOUT,
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'The result of `(lapse >= TIMEOUT)` is true'
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);
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const result = await $262.agent.getReportAsync();
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assert.sameValue(
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result,
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'ok',
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'await Atomics.waitAsync(i32a, 0, 0, ${TIMEOUT}).value resolves to "ok"'
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);
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assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(i32a, 0) returns 0');
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}).then($DONE, $DONE);
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