Initial C extension with libev 4.04

libev is a portable abstraction for several high performance IO APIs,
including epoll on Linux, kqueue on BSD/OS X, completion ports on
Solaris, and fallback support for poll/select.

This should give other Rubies besides JRuby a similar scalability
profile to Java NIO, since they will be using high performance stateful
system calls.

.gitignore

@@ -15,3 +15,6 @@ spec/reports
 test/tmp
 test/version_tmp
 tmp
+lib/nio4r_ext.*
+ext/**/*.o
+ext/**/nio4r_ext.*

README.md

@@ -39,4 +39,7 @@ License
 -------
 
 Copyright (c) 2011 Tony Arcieri. Distributed under the MIT License. See
-LICENSE.txt for further details.
+LICENSE.txt for further details.
+
+Includes libev. Copyright (C)2007-09 Marc Alexander Lehmann. Distributed under
+the BSD license. See ext/libev/LICENSE for details.

Rakefile

@@ -1,6 +1,9 @@
 #!/usr/bin/env rake
 require "bundler/gem_tasks"
+require "rake/clean"
 
 Dir["tasks/**/*.rake"].each { |task| load task }
 
-task :default => :spec
+task :default => %w(compile spec)
+
+CLEAN.include "**/*.o", "**/*.so", "**/*.bundle"

ext/libev/LICENSE

@@ -0,0 +1,36 @@
+All files in libev are Copyright (C)2007,2008,2009 Marc Alexander Lehmann.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Alternatively, the contents of this package may be used under the terms
+of the GNU General Public License ("GPL") version 2 or any later version,
+in which case the provisions of the GPL are applicable instead of the
+above. If you wish to allow the use of your version of this package only
+under the terms of the GPL and not to allow others to use your version of
+this file under the BSD license, indicate your decision by deleting the
+provisions above and replace them with the notice and other provisions
+required by the GPL in this and the other files of this package. If you do
+not delete the provisions above, a recipient may use your version of this
+file under either the BSD or the GPL.

ext/libev/README

@@ -0,0 +1,58 @@
+libev is a high-performance event loop/event model with lots of features.
+(see benchmark at http://libev.schmorp.de/bench.html)
+
+
+ABOUT
+
+   Homepage: http://software.schmorp.de/pkg/libev
+   Mailinglist: libev@lists.schmorp.de
+                http://lists.schmorp.de/cgi-bin/mailman/listinfo/libev
+   Library Documentation: http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod
+
+   Libev is modelled (very losely) after libevent and the Event perl
+   module, but is faster, scales better and is more correct, and also more
+   featureful. And also smaller. Yay.
+
+   Some of the specialties of libev not commonly found elsewhere are:
+
+   - extensive and detailed, readable documentation (not doxygen garbage).
+   - fully supports fork, can detect fork in various ways and automatically
+     re-arms kernel mechanisms that do not support fork.
+   - highly optimised select, poll, epoll, kqueue and event ports backends.
+   - filesystem object (path) watching (with optional linux inotify support).
+   - wallclock-based times (using absolute time, cron-like).
+   - relative timers/timeouts (handle time jumps).
+   - fast intra-thread communication between multiple
+     event loops (with optional fast linux eventfd backend).
+   - extremely easy to embed.
+   - very small codebase, no bloated library.
+   - fully extensible by being able to plug into the event loop,
+     integrate other event loops, integrate other event loop users.
+   - very little memory use (small watchers, small event loop data).
+   - optional C++ interface allowing method and function callbacks
+     at no extra memory or runtime overhead.
+   - optional Perl interface with similar characteristics (capable
+     of running Glib/Gtk2 on libev, interfaces with Net::SNMP and
+     libadns).
+   - support for other languages (multiple C++ interfaces, D, Ruby,
+     Python) available from third-parties.
+
+   Examples of programs that embed libev: the EV perl module,
+   rxvt-unicode, gvpe (GNU Virtual Private Ethernet), the Deliantra MMORPG
+   server (http://www.deliantra.net/), Rubinius (a next-generation Ruby
+   VM), the Ebb web server, the Rev event toolkit.
+
+
+CONTRIBUTORS
+
+   libev was written and designed by Marc Lehmann and Emanuele Giaquinta.
+
+   The following people sent in patches or made other noteworthy
+   contributions to the design (for minor patches, see the Changes
+   file. If I forgot to include you, please shout at me, it was an
+   accident):
+
+   W.C.A. Wijngaards
+   Christopher Layne
+   Chris Brody
+

ext/libev/README.embed

@@ -0,0 +1,3 @@
+This file is now included in the main libev documentation, see
+
+   http://cvs.schmorp.de/libev/ev.html