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