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Revision: 1.22
Committed: Sun Jun 23 19:22:35 2019 UTC (5 years ago) by root
Branch: MAIN
CVS Tags: EV-rel-4_28, EV-rel-4_29, EV-rel-4_27, rel-4_33, rel-4_27, EV-rel-4_31, EV-rel-4_30, rel-4_31
Changes since 1.21: +2 -1 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 libev is a high-performance event loop/event model with lots of features.
2 (see benchmark at
7 Homepage:
8 Mailinglist:
10 Library Documentation:
12 Libev is modelled (very losely) after libevent and the Event perl
13 module, but is faster, scales better and is more correct, and also more
14 featureful. And also smaller. Yay.
16 Some of the specialties of libev not commonly found elsewhere are:
18 - extensive and detailed, readable documentation (not doxygen garbage).
19 - fully supports fork, can detect fork in various ways and automatically
20 re-arms kernel mechanisms that do not support fork.
21 - highly optimised select, poll, linux epoll, linux aio, bsd kqueue
22 and solaris event ports backends.
23 - filesystem object (path) watching (with optional linux inotify support).
24 - wallclock-based times (using absolute time, cron-like).
25 - relative timers/timeouts (handle time jumps).
26 - fast intra-thread communication between multiple
27 event loops (with optional fast linux eventfd backend).
28 - extremely easy to embed (fully documented, no dependencies,
29 autoconf supported but optional).
30 - very small codebase, no bloated library, simple code.
31 - fully extensible by being able to plug into the event loop,
32 integrate other event loops, integrate other event loop users.
33 - very little memory use (small watchers, small event loop data).
34 - optional C++ interface allowing method and function callbacks
35 at no extra memory or runtime overhead.
36 - optional Perl interface with similar characteristics (capable
37 of running Glib/Gtk2 on libev).
38 - support for other languages (multiple C++ interfaces, D, Ruby,
39 Python) available from third-parties.
41 Examples of programs that embed libev: the EV perl module, node.js,
42 auditd, rxvt-unicode, gvpe (GNU Virtual Private Ethernet), the
43 Deliantra MMORPG server (, Rubinius (a
44 next-generation Ruby VM), the Ebb web server, the Rev event toolkit.
49 libev was written and designed by Marc Lehmann and Emanuele Giaquinta.
51 The following people sent in patches or made other noteworthy
52 contributions to the design (for minor patches, see the Changes
53 file. If I forgot to include you, please shout at me, it was an
54 accident):
56 W.C.A. Wijngaards
57 Christopher Layne
58 Chris Brody