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#!/usr/bin/perl -w

###############################################################################

#    Webmin Sysstats - irq.pl

#

#    Webmin Sysstats Module

#    Copyright (C) 2002 by Eric Gerbier

#    Bug reports to: gerbier@users.sourceforge.net

#    $Id$

#

#    This program is free software; you can redistribute it and/or modify

#    it under the terms of the GNU General Public License as published by

#    the Free Software Foundation; either version 2 of the License, or

#    (at your option) any later version.

#

#    This program is distributed in the hope that it will be useful,

#    but WITHOUT ANY WARRANTY; without even the implied warranty of

#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

#    GNU General Public License for more details.

#

###############################################################################



use strict;

use warnings;

no warnings 'redefine';



use RRDs;

use English qw(-no_match_vars);

use FindBin;



# to be used alone or from sysstat.pl without warning

# because require verify the path

if ( !exists $ENV{WEBMINSTAT_TEMP} ) {

	use lib "$FindBin::Bin/../..";

	## no critic (RequireBarewordIncludes)

	require 'sysstats-aquisition-lib.pl';

	## use critic

}



my $module_name;

my $info = '/proc/interrupts';



###############################################################################

sub read_irq() {



	my $r_tab = read_full_file($info);

	return @{$r_tab};

}

###############################################################################



my %config;

read_file_cached( 'config', \%config );

$module_name = $config{'name'};

debug( "run $module_name version " . $config{'version'} );

my %codes = action_load( \%config );



my @irq = read_irq();

if ( !@irq ) {

	warning("no data from $info");

	goto FIN;

}



# get number of cpu (cf irq-lib)

my $cpu_line = shift @irq;

my @cpu      = split_awk($cpu_line);

my $nb_cpu   = scalar @cpu;



my $pre     = $config{'pre'};

my $irq_num = 1;

while ( exists $config{ $pre . $irq_num } ) {

	my @tab = split /,/, $config{ $pre . $irq_num };



	my $real_irq_num = $tab[0];

	my $irq          = $tab[1];

	my $irq_name     = $tab[2];

	my $runstop      = $tab[4];



	#debug( "irq = $irq");



	my $total = 'U';



	if ( is_param_runstop($runstop) ) {

		foreach my $elem (@irq) {



			my @tab2 = split_awk($elem);

			if ( $tab2[0] =~ m/^\s*${irq}:/ ) {

				$total = 0;



				# loop on cpu columns

				foreach my $i ( 1 .. $nb_cpu ) {

					$total += $tab2[$i] if ( $tab2[$i] );

				}



				#debug( "elem=$elem");

				last;

			}

		}

		debug("$module_name $irq ($irq_name $real_irq_num): total=$total");



		# DERIVE parameters

		#action_param( $irq, $total, \%codes );

	}

	else {

		debug("aquisition for $irq stopped");

	}



	my $rrdbase = $real_irq_num . '.rrd';

	RRDs::update( $rrdbase, "N:$total" );

	my $ERR = RRDs::error();

	warning("ERROR while updating $rrdbase database : $ERR") if $ERR;



	$irq_num++;

}



# a label to quit

#I can not use return when executing this script standalone,

# so I had to use goto

FIN: