nodejs-mozilla/test/parallel/test-worker-ref.js

30 lines
703 B
JavaScript

'use strict';
const common = require('../common');
const { Worker } = require('worker_threads');
// Test that calling worker.unref() leads to 'beforeExit' being emitted, and
// that we can resurrect the worker using worker.ref() from there.
const w = new Worker(`
const { parentPort } = require('worker_threads');
parentPort.once('message', (msg) => {
parentPort.postMessage(msg);
});
`, { eval: true });
process.once('beforeExit', common.mustCall(() => {
console.log('beforeExit');
w.ref();
w.postMessage({ hello: 'world' });
}));
w.once('message', common.mustCall((msg) => {
console.log('message', msg);
}));
w.on('exit', common.mustCall(() => {
console.log('exit');
}));
w.unref();