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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: >
An undefined index arg should translate to 0
info: |
Atomics.notify( typedArray, index, count )
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.
includes: [atomicsHelper.js]
features: [Atomics, SharedArrayBuffer, TypedArray]
---*/
var WAIT_INDEX = 0;
var RUNNING = 1;
var NUMAGENT = 2;
for (var i = 0; i < NUMAGENT; i++) {
$262.agent.start(`
$262.agent.receiveBroadcast(function(sab) {
const i32a = new Int32Array(sab);
// Notify main thread that the agent was started.
Atomics.add(i32a, ${RUNNING}, 1);
// Wait until restarted by main thread.
var status = Atomics.wait(i32a, ${WAIT_INDEX}, 0);
// Report wait status.
$262.agent.report(status);
$262.agent.leaving();
});
`);
}
const i32a = new Int32Array(
new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
);
$262.agent.safeBroadcast(i32a);
// Wait until both agents started.
$262.agent.waitUntil(i32a, RUNNING, NUMAGENT);
// Try to yield control to ensure the agents actually started to wait.
$262.agent.tryYield();
// Notify at index 0, undefined => 0.
var woken = 0;
while ((woken = Atomics.notify(i32a, undefined, 1)) === 0) ;
assert.sameValue(woken, 1, 'Atomics.notify(i32a, undefined, 1) returns 1');
assert.sameValue($262.agent.getReport(), 'ok', '$262.agent.getReport() returns "ok"');
// Notify again at index 0, default => 0.
var woken = 0;
while ((woken = Atomics.notify(i32a /*, default values used */)) === 0) ;
assert.sameValue(woken, 1, 'Atomics.notify(i32a /*, default values used */) returns 1');
assert.sameValue($262.agent.getReport(), 'ok', '$262.agent.getReport() returns "ok"');
reportCompare(0, 0);
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