JSTests/test262/test/built-ins/Atomics/wait/did-timeout.js

// Copyright (C) 2017 Mozilla Corporation.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-atomics.wait
description: >
  Test that Atomics.wait returns the right result when it timed out and that
  the time to time out is reasonable.
includes: [atomicsHelper.js]
---*/

$262.agent.start(
`
$262.agent.receiveBroadcast(function (sab, id) {
  var ia = new Int32Array(sab);
  var then = Date.now();
  $262.agent.report(Atomics.wait(ia, 0, 0, 500)); // Timeout 500ms
  $262.agent.report(Date.now() - then);           // Actual time can be more than 500ms
  $262.agent.leaving();
})
`);

var ia = new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT));

$262.agent.broadcast(ia.buffer);
assert.sameValue(getReport(), "timed-out");
assert.sameValue((getReport()|0) >= 500 - $ATOMICS_MAX_TIME_EPSILON, true);

function getReport() {
    var r;
    while ((r = $262.agent.getReport()) == null)
        $262.agent.sleep(100);
    return r;
}