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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 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-atomics.wait
description: >
Get the correct WaiterList
info: |
Atomics.wait( typedArray, index, value, timeout )
...
11. Let WL be GetWaiterList(block, indexedPosition).
...
GetWaiterList( block, i )
...
4. Return the WaiterList that is referenced by the pair (block, i).
includes: [atomicsHelper.js]
features: [Atomics, BigInt, SharedArrayBuffer, TypedArray]
---*/
var NUMAGENT = 2;
var RUNNING = 4;
const i64a = new BigInt64Array(
new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 5)
);
$262.agent.start(`
$262.agent.receiveBroadcast(function(sab) {
const i64a = new BigInt64Array(sab);
Atomics.add(i64a, ${RUNNING}, 1n);
// Wait on index 0
$262.agent.report(Atomics.wait(i64a, 0, 0n, Infinity));
$262.agent.leaving();
});
`);
$262.agent.start(`
$262.agent.receiveBroadcast(function(sab) {
const i64a = new BigInt64Array(sab);
Atomics.add(i64a, ${RUNNING}, 1n);
// Wait on index 2
$262.agent.report(Atomics.wait(i64a, 2, 0n, Infinity));
$262.agent.leaving();
});
`);
$262.agent.safeBroadcast(i64a);
// Wait until all agents started.
$262.agent.waitUntil(i64a, RUNNING, BigInt(NUMAGENT));
// Notify index 1, notifies nothing
assert.sameValue(Atomics.notify(i64a, 1), 0, 'Atomics.notify(i64a, 1) returns 0');
// Notify index 3, notifies nothing
assert.sameValue(Atomics.notify(i64a, 3), 0, 'Atomics.notify(i64a, 3) returns 0');
// Notify index 2, notifies 1
var woken = 0;
while ((woken = Atomics.notify(i64a, 2)) === 0) ;
assert.sameValue(woken, 1, 'Atomics.notify(i64a, 2) returns 1');
assert.sameValue($262.agent.getReport(), 'ok', '$262.agent.getReport() returns "ok"');
// Notify index 0, notifies 1
var woken = 0;
while ((woken = Atomics.notify(i64a, 0)) === 0) ;
assert.sameValue(woken, 1, 'Atomics.notify(i64a, 0) returns 1');
assert.sameValue($262.agent.getReport(), 'ok', '$262.agent.getReport() returns "ok"');
reportCompare(0, 0);