Liboop is a low-level event loop management library for POSIX-based
operating systems. It supports the development of modular, multiplexed
applications that may respond to events from several sources. It
replaces the "select() loop" and allows the registration of event
handlers for file and network I/O, timers, and signals. Because
processes use these mechanisms for almost all external communication,
liboop can be used as the basis for almost any application.