epoll/test/stress/brute-force-leak-check.js

A low-level Node.js binding for the Linux epoll API

'use strict';

/*
 * Create 1e9 epoll instances and use each of them to detect a single event.
 * The goal here is ensure that memory usage doesn't constantly increase over
 * time.
 *
 * This test expects a newline as input on stdin. It polls for events on stdin
 * but doesn't read stdin until it has been notified about the availability of
 * input data 1e9 times.
 */
//const Epoll = require('../build/Release/epoll').Epoll;
const Epoll = require('../../').Epoll;
const util = require('../util');

const stdin = 0; // fd for stdin

let count = 0;

const once = _ => {
  const epoll = new Epoll((err, fd, events) => {
    epoll.remove(fd).close();

    count += 1;

    if (count % 1e5 === 0) {
      console.log(count + ' instances created and events detected ');
    }
    if (count < 1e9) {
      once();
    } else {
      util.read(fd); // read stdin (the newline)
    }
  });

  epoll.add(stdin, Epoll.EPOLLIN);
};

once();