libevent-1.4.8: The libevent API provides a mechanism to execute a callback function when a
libevent-1.4.8: specific event occurs on a file descriptor or after a timeout has been reached.
libevent-1.4.8: Furthermore, libevent also support callbacks due to signals or regular timeouts.
libevent-1.4.8: 
libevent-1.4.8: libevent is meant to replace the event loop found in event driven network
libevent-1.4.8: servers. An application just needs to call event_dispatch() and then add or
libevent-1.4.8: remove events dynamically without having to change the event loop.
libevent-1.4.8: