benchmark/worker/atomics-wait.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

'use strict';

if (typeof SharedArrayBuffer === 'undefined') {
  throw new Error('SharedArrayBuffers must be enabled to run this benchmark');
}

if (typeof Atomics === 'undefined') {
  throw new Error('Atomics must be enabled to run this benchmark');
}

const common = require('../common.js');
const bench = common.createBenchmark(main, {
  n: [1e7],
});

function main({ n }) {
  const i32arr = new Int32Array(new SharedArrayBuffer(4));
  bench.start();
  for (let i = 0; i < n; i++)
    Atomics.wait(i32arr, 0, 1);  // Will return immediately.
  bench.end(n);
}