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package DebPool::Signal;
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###
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#
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# DebPool::DB - Module for handling inter-process signals
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#
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# Copyright 2003-2004 Joel Aelwyn. All rights reserved.
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# 
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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#    notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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#    notice, this list of conditions and the following disclaimer in the
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#    documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the Author nor the names of any contributors
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#    may be used to endorse or promote products derived from this software
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#    without specific prior written permission.
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# 
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $Id: Signal.pm 27 2004-11-07 03:06:59Z joel $
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#
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###
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# We use 'our', so we must have at least Perl 5.6
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require 5.006_000;
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# Always good ideas.
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use strict;
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use warnings;
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# We do logging, so we need this.
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use DebPool::Logging qw(:functions :facility :level);
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### Module setup
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BEGIN {
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    use Exporter ();
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    our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
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    # Version checking
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    $VERSION = '0.1.5';
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    @ISA = qw(Exporter);
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    @EXPORT = qw(
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    );
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    @EXPORT_OK = qw(
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        $Signal_Caught
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        %ComponentDB
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    );
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    %EXPORT_TAGS = (
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        'functions' => [qw()],
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        'vars' => [qw($Signal_Caught)],
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    );
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}
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### Exported package globals
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# Boolean value indicating whether we have caught one of the signals that
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# normally trigger clean termination (SIGHUP, SIGINT, SIGPIPE, SIGTERM).
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our($Signal_Caught) = 0;
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### Non-exported package globals
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# Thread-safe? What's that? Package global error value. We don't export
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# this directly, because it would conflict with other modules.
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our($Error);
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### File lexicals
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# None
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### Constant functions
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# None
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### Meaningful functions
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# None
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### Special
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# The purpose of this module is to handle signals usefully; therefore, we
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# set up a basic term-signal handler that catches the 'ordinary termination
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# requested' class of signals, and bind it via sigtrap.
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sub Handle_SIGtermrequest {
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    my($signal) = shift(@_);
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    $Signal_Caught = 1;
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    Log_Message("Caught signal " . $signal, LOG_GENERAL, LOG_INFO);
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}
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sub Handle_SIGHUP {
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    Handle_SIGtermrequest('SIGHUP');
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}
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use sigtrap qw(handler Handle_SIGHUP HUP);
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sub Handle_SIGINT {
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    Handle_SIGtermrequest('SIGINT');
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}
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use sigtrap qw(handler Handle_SIGINT INT);
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sub Handle_SIGPIPE {
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    Handle_SIGtermrequest('SIGPIPE');
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}
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use sigtrap qw(handler Handle_SIGPIPE PIPE);
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sub Handle_SIGTERM {
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    Handle_SIGtermrequest('SIGTERM');
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}
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use sigtrap qw(handler Handle_SIGTERM TERM);
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END {}
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1;
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__END__
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# vim:set tabstop=4 expandtab: