mirror of https://github.com/tc39/test262.git
82 lines
2.3 KiB
JavaScript
82 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, BigInt, 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 i64a = new BigInt64Array(sab);
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Atomics.add(i64a, ${RUNNING}, 1n);
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// undefined => NaN => +Infinity
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$262.agent.report("A " + (await Atomics.waitAsync(i64a, 0, 0n, 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 i64a = new BigInt64Array(sab);
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Atomics.add(i64a, ${RUNNING}, 1n);
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// undefined timeout arg => NaN => +Infinity
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$262.agent.report("B " + (await Atomics.waitAsync(i64a, 0, 0n).value));
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$262.agent.leaving();
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});
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`);
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const i64a = new BigInt64Array(
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new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)
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);
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$262.agent.safeBroadcastAsync(i64a, RUNNING, BigInt(NUMAGENT)).then(async (agentCount) => {
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assert.sameValue(
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agentCount,
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BigInt(NUMAGENT),
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'The value of `agentCount` must return the same value returned by BigInt(NUMAGENT)'
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);
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assert.sameValue(
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Atomics.notify(i64a, WAIT_INDEX, NOTIFYCOUNT),
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NOTIFYCOUNT,
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'Atomics.notify(new BigInt64Array(new SharedArrayBuffer(BigInt64Array.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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