mirror of https://gitee.com/openkylin/nodejs.git
70 lines
2.3 KiB
JavaScript
70 lines
2.3 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { Worker } = require('worker_threads');
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const { once } = require('events');
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const fs = require('fs');
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// All the tests here are run sequentially, to avoid accidentally opening an fd
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// which another part of the test expects to be closed.
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const preamble = `
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const fs = require("fs");
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const { parentPort } = require('worker_threads');
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const __filename = ${JSON.stringify(__filename)};
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process.on('warning', (warning) => parentPort.postMessage({ warning }));
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`;
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(async () => {
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// Consistency check: Without trackUnmanagedFds, FDs are *not* closed.
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{
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const w = new Worker(`${preamble}
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parentPort.postMessage(fs.openSync(__filename));
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`, { eval: true, trackUnmanagedFds: false });
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const [ [ fd ] ] = await Promise.all([once(w, 'message'), once(w, 'exit')]);
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assert(fd > 2);
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fs.fstatSync(fd); // Does not throw.
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fs.closeSync(fd);
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}
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// With trackUnmanagedFds, FDs are closed automatically.
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{
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const w = new Worker(`${preamble}
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parentPort.postMessage(fs.openSync(__filename));
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`, { eval: true, trackUnmanagedFds: true });
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const [ [ fd ] ] = await Promise.all([once(w, 'message'), once(w, 'exit')]);
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assert(fd > 2);
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assert.throws(() => fs.fstatSync(fd), { code: 'EBADF' });
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}
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// There is a warning when an fd is unexpectedly opened twice.
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{
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const w = new Worker(`${preamble}
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parentPort.postMessage(fs.openSync(__filename));
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parentPort.once('message', () => {
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const reopened = fs.openSync(__filename);
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fs.closeSync(reopened);
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});
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`, { eval: true, trackUnmanagedFds: true });
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const [ fd ] = await once(w, 'message');
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fs.closeSync(fd);
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w.postMessage('');
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const [ { warning } ] = await once(w, 'message');
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assert.match(warning.message,
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/File descriptor \d+ opened in unmanaged mode twice/);
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}
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// There is a warning when an fd is unexpectedly closed.
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{
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const w = new Worker(`${preamble}
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parentPort.once('message', (fd) => {
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fs.closeSync(fd);
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});
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`, { eval: true, trackUnmanagedFds: true });
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w.postMessage(fs.openSync(__filename));
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const [ { warning } ] = await once(w, 'message');
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assert.match(warning.message,
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/File descriptor \d+ closed but not opened in unmanaged mode/);
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}
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})().then(common.mustCall());
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