#!/bin/sh

# Julien Francoz CoCoZ <julien@francoz.net>

# graph memory usage detail for a process using /proc/$PID/status
# create a link to this plugin with the syntax proc_yourprocessname_status
# example : proc_master_status pour postfix master process

cmd=`basename "$0"`
process=`echo "$cmd"| cut -d'_' -f 2`
pid=`pgrep -o -x "$process"`
#echo $pid

if [ "$1" = "autoconf" ]; then
	if [ -r /proc/$pid/status ]; then
		echo yes
	else
		echo no
	fi
	exit 0
fi

if [ "$1" = "config" ]; then

	echo "graph_title Memory usage for process $process"
	echo "graph_order VmExe VmLib VmStk VmData VmRSS VmSize"
	echo 'graph_vlabel Ko'
	echo 'graph_scale no'
	echo "graph_info This graph display memory usage for a process"
	echo 'graph_category processes'
	echo 'graph_period second'

	echo 'VmExe.label VmExe'
	echo 'VmExe.draw AREA'
	echo "VmExe.info The size of the executable segment"

	echo 'VmLib.label VmLib'
	echo 'VmLib.draw STACK'
	echo 'VmLib.info The size of the library code'

	echo 'VmStk.label VmStk'
	echo 'VmStk.draw STACK'
	echo 'VmStk.info The stack size'

	echo 'VmLck.label VmLck'
	echo 'VmLck.draw STACK'
	echo 'VmLck.info The amount of locked memory'

	echo 'VmData.label VmData'
	echo 'VmData.draw STACK'
	echo 'VmData.info The size of the Data segment'

	echo 'VmRSS.label VmRSS'
	echo 'VmRSS.draw LINE2'
	echo 'VmRSS.info The amount of memory mapped in RAM ( instead of swapped out)'

	echo 'VmSize.label VmSize'
	echo 'VmSize.draw LINE2'
	echo 'VmSize.info The size of the virtual memory allocated to the process'
	exit 0
fi

cat /proc/$pid/status |grep -E '^Vm' | sed -e 's/:/.value/' -e 's/\s\+kB$//' -e 's/\s\+/ /'