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// |reftest| skip async -- Atomics.waitAsync is not supported
// Copyright (C) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-atomics.waitasync
description: >
Undefined index arg is coerced to zero
info: |
Atomics.waitAsync( typedArray, index, value, timeout )
1. Return DoWait(async, typedArray, index, value, timeout).
DoWait ( mode, typedArray, index, value, timeout )
2. Let i be ? ValidateAtomicAccess(typedArray, index).
...
2.Let accessIndex be ? ToIndex(requestIndex).
9.If IsSharedArrayBuffer(buffer) is false, throw a TypeError exception.
...
3.If bufferData is a Data Block, return false
If value is undefined, then
Let index be 0.
flags: [async]
includes: [atomicsHelper.js]
features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, arrow-function, async-functions]
---*/
assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
const WAIT_INDEX = 0;
const RUNNING = 1;
const NUMAGENT = 2;
const NOTIFYCOUNT = 2;
$262.agent.start(`
$262.agent.receiveBroadcast(async (sab) => {
var i32a = new Int32Array(sab);
Atomics.add(i32a, ${RUNNING}, 1);
$262.agent.report("A " + (await Atomics.waitAsync(i32a, undefined, 0).value));
$262.agent.leaving();
});
`);
$262.agent.start(`
$262.agent.receiveBroadcast(async (sab) => {
var i32a = new Int32Array(sab);
Atomics.add(i32a, ${RUNNING}, 1);
$262.agent.report("B " + (await Atomics.waitAsync(i32a, undefined, 0).value));
$262.agent.leaving();
});
`);
const i32a = new Int32Array(
new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
);
$262.agent.safeBroadcastAsync(i32a, RUNNING, NUMAGENT).then(async (agentCount) => {
assert.sameValue(agentCount, NUMAGENT, 'The value of `agentCount` is expected to equal the value of NUMAGENT');
assert.sameValue(
Atomics.notify(i32a, WAIT_INDEX, NOTIFYCOUNT),
NOTIFYCOUNT,
'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), 0, 2) must return the value of NOTIFYCOUNT'
);
const reports = [
await $262.agent.getReportAsync(),
await $262.agent.getReportAsync(),
];
reports.sort();
assert.sameValue(reports[0], 'A ok', 'The value of reports[0] is "A ok"');
assert.sameValue(reports[1], 'B ok', 'The value of reports[1] is "B ok"');
}).then($DONE, $DONE);
|
