mirror of https://github.com/tc39/test262.git
77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
// 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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Undefined timeout arg is coerced to zero
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info: |
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Atomics.waitAsync( typedArray, index, value, timeout )
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1. Return DoWait(async, typedArray, index, value, timeout).
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DoWait ( mode, typedArray, index, value, timeout )
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6. Let q be ? ToNumber(timeout).
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...
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Undefined Return NaN.
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5.If q is NaN, let t be +∞, else let t be max(q, 0)
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flags: [async]
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includes: [atomicsHelper.js]
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features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, arrow-function, async-functions]
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---*/
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assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
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const WAIT_INDEX = 0;
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const RUNNING = 1;
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const NUMAGENT = 2;
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const NOTIFYCOUNT = 2;
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$262.agent.start(`
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$262.agent.receiveBroadcast(async (sab) => {
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var i32a = new Int32Array(sab);
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Atomics.add(i32a, ${RUNNING}, 1);
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// undefined => NaN => +Infinity
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$262.agent.report("A " + (await Atomics.waitAsync(i32a, 0, 0, undefined).value));
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$262.agent.leaving();
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});
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`);
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$262.agent.start(`
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$262.agent.receiveBroadcast(async (sab) => {
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var i32a = new Int32Array(sab);
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Atomics.add(i32a, ${RUNNING}, 1);
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// undefined timeout arg => NaN => +Infinity
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$262.agent.report("B " + (await Atomics.waitAsync(i32a, 0, 0).value));
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$262.agent.leaving();
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});
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`);
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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.safeBroadcastAsync(i32a, RUNNING, NUMAGENT).then(async (agentCount) => {
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assert.sameValue(agentCount, NUMAGENT, 'The value of `agentCount` is expected to equal the value of NUMAGENT');
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assert.sameValue(
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Atomics.notify(i32a, WAIT_INDEX, NOTIFYCOUNT),
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NOTIFYCOUNT,
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'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), 0, 2) must return the value of NOTIFYCOUNT'
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);
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const reports = [
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await $262.agent.getReportAsync(),
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await $262.agent.getReportAsync(),
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];
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reports.sort();
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assert.sameValue(reports[0], 'A ok', 'The value of reports[0] is "A ok"');
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assert.sameValue(reports[1], 'B ok', 'The value of reports[1] is "B ok"');
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}).then($DONE, $DONE);
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