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// |reftest| skip-if(!this.hasOwnProperty('Atomics')||!this.hasOwnProperty('SharedArrayBuffer')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('arm64-simulator'))) -- Atomics,SharedArrayBuffer is not enabled unconditionally, ARM64 Simulator cannot emulate atomics
// Copyright (C) 2018 Amal Hussein. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-atomics.wait
description: >
Undefined timeout arg should result in an infinite timeout
info: |
Atomics.wait( typedArray, index, value, timeout )
4.Let q be ? ToNumber(timeout).
...
Undefined Return NaN.
5.If q is NaN, let t be +∞, else let t be max(q, 0)
includes: [atomicsHelper.js]
features: [Atomics, SharedArrayBuffer, TypedArray]
---*/
const WAIT_INDEX = 0; // Index all agents are waiting on
const RUNNING = 1;
const NUMAGENT = 2; // Total number of agents started
const NOTIFYCOUNT = 2; // Total number of agents to notify up
$262.agent.start(`
$262.agent.receiveBroadcast(function(sab) {
var i32a = new Int32Array(sab);
Atomics.add(i32a, ${RUNNING}, 1);
// undefined => NaN => +Infinity
$262.agent.report("A " + Atomics.wait(i32a, 0, 0, undefined));
$262.agent.leaving();
});
`);
$262.agent.start(`
$262.agent.receiveBroadcast(function(sab) {
var i32a = new Int32Array(sab);
Atomics.add(i32a, ${RUNNING}, 1);
// undefined timeout arg => NaN => +Infinity
$262.agent.report("B " + Atomics.wait(i32a, 0, 0));
$262.agent.leaving();
});
`);
const i32a = new Int32Array(
new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
);
$262.agent.safeBroadcast(i32a);
$262.agent.waitUntil(i32a, RUNNING, NUMAGENT);
// Try to yield control to ensure the agent actually started to wait.
$262.agent.tryYield();
assert.sameValue(
Atomics.notify(i32a, WAIT_INDEX, NOTIFYCOUNT),
NOTIFYCOUNT,
'Atomics.notify(i32a, WAIT_INDEX, NOTIFYCOUNT) returns the value of `NOTIFYCOUNT` (2)'
);
const reports = [];
for (var i = 0; i < NUMAGENT; i++) {
reports.push($262.agent.getReport());
}
reports.sort();
assert.sameValue(reports[0], 'A ok', 'The value of reports[0] is "A ok"');
assert.sameValue(reports[1], 'B ok', 'The value of reports[1] is "B ok"');
reportCompare(0, 0);
|
