NAME
   Alien::Libjio - Installing and finding libjio (Journalled I/O library)

VERSION
   Version 1.0 ($Id: ISAAC.pm 7057 2009-05-12 22:51:01Z [email protected]
   $)

DESCRIPTION
   To ensure reliability, some file systems and databases provide support
   for something known as journalling. The idea is to ensure data
   consistency by creating a log of actions to be taken (called a Write
   Ahead Log) before committing them to disk. That way, if a transaction
   were to fail due to a system crash or other unexpected event, the write
   ahead log could be used to finish writing the data.

   While this functionality is often available with networked databases, it
   can be a rather memory- and processor-intensive solution, even where
   reliable writes are important. In other cases, the filesystem does not
   provide native journalling support, so other tricks may be used to
   ensure data integrity, such as writing to a separate temporary file and
   then overwriting the file instead of modifying it in-place.
   Unfortunately, this method cannot handle threaded operations
   appropriately.

   Thankfully, Alberto Bertogli published a userspace C library called
   libjio that can provide these features in a small (less than 1500 lines
   of code) library with no external dependencies.

   This package is designed to install it, and provide a way to get the
   flags necessary to compile programs using it. It is particularly useful
   for Perl XS programs that use it, such as IO::Journal.

COMPATIBILITY
   This module was tested under Perl 5.10.0, using Debian Linux. However,
   because it's Pure Perl and doesn't do anything too obscure, it should be
   compatible with any version of Perl that supports its prerequisite
   modules.

   By default, this library is installed wherever the main system libraries
   are usually installed. As a result, "Alien::Libjio" will only work if
   installed with root permissions.

   If you encounter any problems on a different version or architecture,
   please contact the maintainer.

AUTHOR
   Jonathan Yu <[email protected]>

 CONTRIBUTORS
   Your name here ;-)

ACKNOWLEDGEMENTS
   *   Special thanks to Alberto Bertogli <[email protected]> for
       developing this useful library and for releasing it into the public
       domain.

SUPPORT
   You can find documentation for this module with the perldoc command.

       perldoc Alien::Libjio

   You can also look for information at:

   *   AnnoCPAN: Annotated CPAN documentation

       <http://annocpan.org/dist/Alien-Libjio>

   *   CPAN Ratings

       <http://cpanratings.perl.org/d/Alien-Libjio>

   *   Search CPAN

       <http://search.cpan.org/dist/Alien-Libjio>

   *   CPAN Request Tracker

       <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Alien-Libjio>

   *   CPAN Testing Service (Kwalitee Tests)

       <http://cpants.perl.org/dist/overview/Alien-Libjio>

   *   CPAN Testers Platform Compatibility Matrix

       <http://cpantesters.org/show/Alien-Libjio.html>

REPOSITORY
   You can access the most recent development version of this module at:

   <http://svn.ali.as/cpan/trunk/Alien-Libjio>

   If you are a CPAN developer and would like to make modifications to the
   code base, please contact Adam Kennedy <[email protected]>, the repository
   administrator. I only ask that you contact me first to discuss the
   changes you wish to make to the distribution.

FEEDBACK
   Please send relevant comments, rotten tomatoes and suggestions directly
   to the maintainer noted above.

   If you have a bug report or feature request, please file them on the
   CPAN Request Tracker at <http://rt.cpan.org>. If you are able to submit
   your bug report in the form of failing unit tests, you are strongly
   encouraged to do so.

SEE ALSO
   IO::Journal, a Perl module that provides an interface to libjio.

   App::Info::Lib::Jio, a package that gets information about libjio.

   <http://blitiri.com.ar/p/libjio/>, Alberto Bertogli's page about libjio,
   which explains the purpose and featuers of libjio.

CAVEATS
 KNOWN BUGS
   There are no known bugs as of this release.

 LIMITATIONS
   *   This module can only search known/common paths for libjio
       installations. It does try to use pkg-config and ExtUtils::Liblist
       to find a libjio installation on your system, but it cannot predict
       where files might have been installed. As a result, this package
       might install a duplicate copy of libjio.

LICENSE
   Copyleft 2009 by Jonathan Yu <[email protected]>. All rights reversed.

   I, the copyright holder of this package, hereby release the entire
   contents therein into the public domain. This applies worldwide, to the
   extent that it is permissible by law.

   In case this is not legally possible, I grant any entity the right to
   use this work for any purpose, without any conditions, unless such
   conditions are required by law.

   The full details of this can be found in the LICENSE file included in
   this package.

DISCLAIMER OF WARRANTY
   The software is provided "AS IS", without warranty of any kind, express
   or implied, including but not limited to the warranties of
   merchantability, fitness for a particular purpose and noninfringement.
   In no event shall the authors or copyright holders be liable for any
   claim, damages or other liability, whether in an action of contract,
   tort or otherwise, arising from, out of or in connection with the
   software or the use or other dealings in the software.

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