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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: >
Test Atomics.waitAsync on arrays that allow atomic operations
flags: [async]
includes: [atomicsHelper.js, asyncHelpers.js]
features: [Atomics.waitAsync, Atomics, BigInt]
---*/
assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
$262.agent.start(`
(async () => {
var sab = new SharedArrayBuffer(2048);
var good_indices = [ (view) => 0/-1, // -0
(view) => '-0',
(view) => view.length - 1,
(view) => ({ valueOf: () => 0 }),
(view) => ({ toString: () => '0', valueOf: false }) // non-callable valueOf triggers invocation of toString
];
var view = new BigInt64Array(sab, 32, 20);
view[0] = 0n;
$262.agent.report("A " + (await Atomics.waitAsync(view, 0, 0n, 0).value))
$262.agent.report("B " + (await Atomics.waitAsync(view, 0, 37n, 0).value));
const results = [];
// In-bounds boundary cases for indexing
for ( let IdxGen of good_indices ) {
let Idx = IdxGen(view);
view.fill(0n);
// Atomics.store() computes an index from Idx in the same way as other
// Atomics operations, not quite like view[Idx].
Atomics.store(view, Idx, 37n);
results.push(await Atomics.waitAsync(view, Idx, 0n).value);
}
$262.agent.report("C " + results.join(","));
$262.agent.leaving();
})();
`);
asyncTest(async () => {
const outcomes = [];
for (let i = 0; i < 3; i++) {
outcomes.push(await $262.agent.getReportAsync());
}
assert.sameValue(
outcomes[0],
'A timed-out',
'The value of outcomes[0] is "A timed-out"'
);
assert.sameValue(
outcomes[1],
'B not-equal',
'The value of outcomes[1] is "B not-equal"'
);
assert.sameValue(
outcomes[2],
'C not-equal,not-equal,not-equal,not-equal,not-equal',
'The value of outcomes[2] is "C not-equal,not-equal,not-equal,not-equal,not-equal"'
);
});
|
