wtfnode/proxy.js

Utility to help find out why Node isn't exiting

#!/usr/bin/env node

'use strict';

// When binding a SIGINT handler, Node will no longer be able to exit infinite loops
// To counteract this, we spawn the "wtf'ed" module as a child and create a provision
// to kill the process if it's unresponsive (double Ctrl+C)

var cp = require('child_process');
var PATH = require('path');

var child = cp.fork(PATH.join(__dirname, 'index.js'), process.argv.slice(2), {
    cwd: process.cwd(),
    env: process.env
});

child.on('exit', function () {
    process.exit(0);
});

var count = 0;
process.on('SIGINT', function () {
    child.kill('SIGINT');
    count++;
    if (count > 1) {
        console.error('Forcefully terminating, unable to gather process info');
        child.kill();
        process.exit(1);
    }
});

process.on('SIGTERM', function () {
    child.kill('SIGTERM');
});