libevent: Libevent ((Event Notification Library)
libevent:
libevent: The libevent API provides a mechanism to execute  a callback function
libevent: when a specific event occurs on a  file descriptor or after a timeout
libevent: has been reached. Furthermore, libevent also support callbacks due to
libevent: signals or regular timeouts. 
libevent:
libevent:
libevent:
libevent:
libevent: