The libevent API provides a mechanism to execute a callback function when a specific event occurs on a file descriptor or after a timeout has been reached. It is meant to replace the asynchronous event loop found in event-driven network servers.
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This release fixed several memory leaks in the
HTTP layer, fixed signal handling for
multi-threaded applications, and fixed issues with
the timer cache when leaving or entering the event
loop.
This release contains several small bugfixes,
including epoll timeouts larger than 35 minutes on
older Linux kernels and portability improvements
for Windows and IRIX.
Several new APIs have been introduced (event_base_new, event_reinit, event_loopbreak, etc.). RPC structures can now use 32-bit structure identifiers. The performance of the Windows backend has been improved. There are additional bug and correctness fixes.
This release contains a new RPC subsystem that
makes it easy to write distributed servers and
clients. Almost everything is documented via
Doxygen now. There have been a bunch of fixes and
improvements to evdns and evhttp. Libevent now
builds two additional libraries: libevent_core
(containing only the event core) and
libevent_extras (contained evdns, evhttp, and
evrpc). Performance was slightly improved due to
using a heap instead of red-black trees for
timeouts. Finally, Solaris' event ports are better
supported.
