Libev is a high-performance event loop featuring support for I/O, timers (relative and absolute, cron-like ones), signals, process status changes, and other types of events. It has both a fast native API and libevent emulation to support programs written using the libevent API. The libev distribution consists of libevent with the core event handling parts replaced by the libev embedded event loop. Differences to libevent include higher speed, simpler design, more features, less memory usage, and no arbitrary limits. libev supports epoll, kqueue, Solaris ports, poll, and select. License: BSD License (revised) Changes: A workaround for a Linux 2.4 bug in ev_child watchers has been implemented. The libevent emulation has been improved. Three new (optional) watcher types have been introduced: ev_stat to detect attribute changes for a filesystem path, ev_fork to detect forks, and ev_embed that lets you embed one event loop in another (e.g. kqueue in poll for those systems where kqueue only works for some fd types). The documentation was vastly extended and improved, and a new minimal mode can be used to reduce code and memory footprint by as much as 30%.

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