Edit File: tree.js
const spawn = require('child_process').spawn; module.exports = function (rootPid, callback) { const pidsOfInterest = new Set([parseInt(rootPid, 10)]); var output = ''; // *nix const ps = spawn('ps', ['-A', '-o', 'ppid,pid']); ps.stdout.on('data', (data) => { output += data.toString('ascii'); }); ps.on('close', () => { try { const res = output .split('\n') .slice(1) .map((_) => _.trim()) .reduce((acc, line) => { const pids = line.split(/\s+/); const ppid = parseInt(pids[0], 10); if (pidsOfInterest.has(ppid)) { const pid = parseInt(pids[1], 10); acc.push(pid); pidsOfInterest.add(pid); } return acc; }, []); callback(null, res); } catch (e) { callback(e, null); } }); };
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