node/test/parallel/test-worker-message-channel...

29 lines
843 B
JavaScript

// Flags: --expose-gc
'use strict';
const common = require('../common');
const assert = require('assert');
const { Worker } = require('worker_threads');
{
const sharedArrayBuffer = new SharedArrayBuffer(12);
const local = Buffer.from(sharedArrayBuffer);
const w = new Worker(`
const { parentPort } = require('worker_threads');
parentPort.on('message', ({ sharedArrayBuffer }) => {
const local = Buffer.from(sharedArrayBuffer);
local.write('world!', 6);
parentPort.postMessage('written!');
});
`, { eval: true });
w.on('message', common.mustCall(() => {
assert.strictEqual(local.toString(), 'Hello world!');
globalThis.gc();
w.terminate();
}));
w.postMessage({ sharedArrayBuffer });
// This would be a race condition if the memory regions were overlapping
local.write('Hello ');
}