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78 lines
2.2 KiB
JavaScript
78 lines
2.2 KiB
JavaScript
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// deno-fmt-ignore-file
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// deno-lint-ignore-file
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// Taken from Node 20.11.1
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// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const child_process = require('child_process');
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const fs = require('fs');
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const stream = require('stream');
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if (!common.isLinux) {
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common.skip('The fs watch limit is OS-dependent');
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}
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if (common.isPi) {
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common.skip('Too slow for Raspberry Pi devices');
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}
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try {
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// Ensure inotify limit is low enough for the test to actually exercise the
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// limit with small enough resources.
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const limit = Number(
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fs.readFileSync('/proc/sys/fs/inotify/max_user_watches', 'utf8'));
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if (limit > 16384)
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common.skip('inotify limit is quite large');
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} catch (e) {
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if (e.code === 'ENOENT')
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common.skip('the inotify /proc subsystem does not exist');
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// Fail on other errors.
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throw e;
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}
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const processes = [];
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const gatherStderr = new stream.PassThrough();
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gatherStderr.setEncoding('utf8');
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gatherStderr.setMaxListeners(Infinity);
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let finished = false;
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function spawnProcesses() {
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for (let i = 0; i < 10; ++i) {
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const proc = child_process.spawn(
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process.execPath,
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[ '-e',
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`process.chdir(${JSON.stringify(__dirname)});
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for (const file of fs.readdirSync('.'))
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fs.watch(file, () => {});`,
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], { stdio: ['inherit', 'inherit', 'pipe'] });
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proc.stderr.pipe(gatherStderr);
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processes.push(proc);
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}
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setTimeout(() => {
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if (!finished && processes.length < 200)
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spawnProcesses();
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}, 100);
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}
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spawnProcesses();
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let accumulated = '';
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gatherStderr.on('data', common.mustCallAtLeast((chunk) => {
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accumulated += chunk;
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if (accumulated.includes('Error:') && !finished) {
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assert(
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accumulated.includes('ENOSPC: System limit for number ' +
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'of file watchers reached') ||
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accumulated.includes('EMFILE: '),
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accumulated);
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console.log(`done after ${processes.length} processes, cleaning up`);
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finished = true;
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processes.forEach((proc) => proc.kill());
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}
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}, 1));
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