You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
857 B
38 lines
857 B
3 years ago
|
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);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
};
|