Boris Zentner

NAME

File::PidSimple - Handle and create pidfiles easy

VERSION

This document describes File::PidSimple version 0.05

SYNOPSIS

    use File::PidSimple;

  # create a pid object, but do not write anything
  my $pid = File::PidSimple->new( piddir => File::Spec->tmpdir );
  
  # exit if we runnig already
  exit 0 if ( $pid->running );
  $pid->write;
  

  my $pid = File::PidSimple->new( piddir => File::Spec->tmpdir )->write_unless_running;
  exit 0 unless $pid;
  
  # for a daemon this is enough
  File::PidSimple->new->write_unless_running || exit 0;
  

DESCRIPTION

This module make the handling of pidfiles simple.

INTERFACE

pidfile_name

  filename of the pidfiles.

piddir

return the directory, where the pidfile is stored

see new to set the piddir

new

  piddir         ( default => '/var/run' )
  progname       default basename($0)

running

write

writes a new pidfile. by default with the actual pid ( $$ ) or with

$pidfile->write

$pidfile->write(1234); # force to write

write_unless_running

write the pidfile, but only if no old pidfile exists, or the process described in the old pidfile is not running anymore

progname

progname ( basename )

remove

remove the pidfile

DIAGNOSTICS

This module Croak on fatal errors. Thats any failed IO operation on the pidfiles. open, close and print.

CONFIGURATION AND ENVIRONMENT

File::PidSimple requires no configuration files or environment variables.

DEPENDENCIES

only core modules

  Carp
  File::Basename
  File::Spec

INCOMPATIBILITIES

None reported.

BUGS AND LIMITATIONS

No bugs have been reported.

Please report any bugs or feature requests to bug-file-pidsimple@rt.cpan.org, or through the web interface at http://rt.cpan.org.

AUTHOR

Boris Zentner <bzm@2bz.de>

LICENCE AND COPYRIGHT

Copyright (c) 2007, Boris Zentner <bzm@2bz.de>. All rights reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.