mirror of https://github.com/tc39/test262.git
71 lines
1.9 KiB
JavaScript
71 lines
1.9 KiB
JavaScript
// Copyright (C) 2018 Amal Hussein. 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.wait
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description: >
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Undefined timeout arg should result in an infinite timeout
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info: |
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Atomics.wait( typedArray, index, value, timeout )
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4.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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includes: [atomicsHelper.js]
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features: [Atomics, SharedArrayBuffer, TypedArray]
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---*/
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const WAIT_INDEX = 0; // Index all agents are waiting on
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const RUNNING = 1;
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const NUMAGENT = 2; // Total number of agents started
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const NOTIFYCOUNT = 2; // Total number of agents to notify up
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$262.agent.start(`
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$262.agent.receiveBroadcast(function(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 " + Atomics.wait(i32a, 0, 0, undefined));
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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(function(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 " + Atomics.wait(i32a, 0, 0));
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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.safeBroadcast(i32a);
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$262.agent.waitUntil(i32a, RUNNING, NUMAGENT);
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// Try to yield control to ensure the agent actually started to wait.
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$262.agent.tryYield();
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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(i32a, WAIT_INDEX, NOTIFYCOUNT) returns the value of `NOTIFYCOUNT` (2)'
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);
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const reports = [];
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for (var i = 0; i < NUMAGENT; i++) {
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reports.push($262.agent.getReport());
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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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