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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.notify
description: >
Undefined count arg should result in an infinite count
info: |
Atomics.notify( typedArray, index, count )
3.If count is undefined, let c be +∞.
includes: [atomicsHelper.js]
features: [Atomics, SharedArrayBuffer, TypedArray]
---*/
const RUNNING = 0; // Index to notify agent has started.
const WAIT_INDEX = 1; // Index all agents are waiting on.
const BUFFER_SIZE = 2;
const NUMAGENT = 4; // Total number of agents started
for (var i = 0; i < NUMAGENT; i++) {
$262.agent.start(`
$262.agent.receiveBroadcast(function(sab) {
const i32a = new Int32Array(sab);
Atomics.add(i32a, ${RUNNING}, 1);
// Wait until restarted by main thread.
var status = Atomics.wait(i32a, ${WAIT_INDEX}, 0);
// Report wait status and then exit the agent.
var name = String.fromCharCode(0x41 + ${i}); // "A", "B", "C", or "D"
$262.agent.report(name + " " + status);
$262.agent.leaving();
});
`);
}
const i32a = new Int32Array(
new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * BUFFER_SIZE)
);
$262.agent.safeBroadcast(i32a);
$262.agent.waitUntil(i32a, RUNNING, NUMAGENT);
// An agent may have been interrupted between reporting its initial report
// and the `Atomics.wait` call. Try to yield control to ensure the agent
// actually started to wait.
$262.agent.tryYield();
assert.sameValue(Atomics.notify(i32a, WAIT_INDEX, undefined), NUMAGENT,
'Atomics.notify(i32a, WAIT_INDEX, undefined) returns the value of `NUMAGENT`');
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"');
assert.sameValue(reports[2], 'C ok', 'The value of reports[2] is "C ok"');
assert.sameValue(reports[3], 'D ok', 'The value of reports[3] is "D ok"');
reportCompare(0, 0);
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