0
0
mirror of https://github.com/nodejs/node.git synced 2024-11-24 12:10:08 +01:00
nodejs/test/parallel/test-worker-stdio-from-preload-module.js
Anna Henningsen c45313b3ad worker: perform initial port.unref() before preload modules
The refcount of the internal communication port is relevant for
stdio, but the `port.unref()` call effectively resets any `.ref()`
calls happening during stdio operations happening before it.

Therefore, do the `.unref()` call before loading preload modules,
which may cause stdio operations.

Fixes: https://github.com/nodejs/node/issues/31777

PR-URL: https://github.com/nodejs/node/pull/33455
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
2020-05-21 17:50:04 -07:00

21 lines
673 B
JavaScript

'use strict';
const common = require('../common');
const fixtures = require('../common/fixtures');
const { Worker } = require('worker_threads');
const assert = require('assert');
// Regression test for https://github.com/nodejs/node/issues/31777:
// stdio operations coming from preload modules should count towards the
// ref count of the internal communication port on the Worker side.
for (let i = 0; i < 10; i++) {
const w = new Worker('console.log("B");', {
execArgv: ['--require', fixtures.path('printA.js')],
eval: true,
stdout: true
});
w.on('exit', common.mustCall(() => {
assert.strictEqual(w.stdout.read().toString(), 'A\nB\n');
}));
}