#!/bin/sh
#
# Bootchart logger script
# Ziga Mahkovec  <ziga.mahkovec@klika.si>
#
# Modified for TCOS project by Mario Izquierdo (mariodebian) <mariodebian@gmail.com>
#
# This script is used for data collection for the bootchart
# boot performance visualization tool (http://www.bootchart.org).
#
# To profile the boot process, bootchartd should be called instead of
# /sbin/init.  Modify the kernel command line to include:
# init=/sbin/bootchartd
#
# bootchartd will then start itself in background and exec /sbin/init
# (or an alternative init process if specified using bootchart_init=)
#
# To profile a running system, run:
# $ /sbin/bootchartd start; /bin/sleep 30; /sbin/bootchartd stop
#

PATH="/sbin:/bin:/usr/sbin:/usr/bin:$PATH"
VERSION="0.8"

# Lock file
BOOTLOG_LOCK="/tmp/bootchart.lock"

# bootchartd.conf
SAMPLE_PERIOD=0.2
PROCESS_ACCOUNTING="no"
BOOTLOG_DEST=/var/log/bootchart.tgz
AUTO_STOP_LOGGER="no"
AUTO_RENDER="no"
AUTO_RENDER_FORMAT="png"
AUTO_RENDER_DIR="/var/log"
LOG_DIR="/tmp/bootchart"




# Start the boot logger.
start()
{
    mkdir -p $LOG_DIR
    cd "$LOG_DIR"
    touch "$BOOTLOG_LOCK"

    /sbin/bootlogger "cat /proc/stat" /tmp/bootchart/proc_stat.log &
    /sbin/bootlogger "cat /proc/diskstats" /tmp/bootchart/proc_diskstats.log &
    /sbin/bootlogger "cat /proc/*/stat" /tmp/bootchart/proc_ps.log &
    /sbin/bootlogger "cat /proc/net/dev" /tmp/bootchart/proc_netdev.log &
}



# Stop the boot logger.  The lock file is removed to force the loggers in
# background to exit.  Some final log files are created and then all log files
# from the tmpfs are packaged and stored in $BOOTLOG_DEST.
stop()
{
	if [ ! -f "$BOOTLOG_LOCK" ]; then
		echo "${0##*/} not running"
		return
	fi
	# Prevent concurrent stop() calls
	rm -f "$BOOTLOG_LOCK"
	/bin/sleep $SAMPLE_PERIOD
	/bin/sleep $SAMPLE_PERIOD
	
	cd "$LOG_DIR"

	# Write system information
	log_header
}


# Log some basic information about the system.
log_header()
{
	(
		echo "version = $VERSION"
		echo "title = TCOS Boot chart for $( hostname | sed q ) ($( date ))"
		echo "system.uname = $( uname -srvm | sed q ) TCOS version:"$(grep ^TCOS_VERSION /conf/tcos.conf| awk -F "=" '{print $2}' |sed s/'"'//g)
		if [ -f /etc/gentoo-release ]; then
			echo "system.release = $( sed q /etc/gentoo-release )"
		elif [ -f /etc/SuSE-release ]; then
			echo "system.release = $( sed q /etc/SuSE-release )"
		elif [ -f /etc/debian_version ]; then
			echo "system.release = Debian GNU/$( uname -s ) $( cat /etc/debian_version )"
		elif [ -f /etc/frugalware-release ]; then
			echo "system.release = $( sed q /etc/frugalware-release )"
		elif [ -f /etc/pardus-release ]; then
			echo "system.release = $( sed q /etc/pardus-release )"
		else
			echo "system.release = $( sed 's/\\.//g;q' /etc/issue )"
		fi

		# Get CPU count
		local cpucount=$(grep -c '^processor' /proc/cpuinfo)
		if [ $cpucount -gt 1 -a -n "$(grep 'sibling.*2' /proc/cpuinfo)" ]; then
			# Hyper-Threading enabled
			cpucount=$(( $cpucount / 2 ))
		fi
		if grep -q '^model name' /proc/cpuinfo; then
			echo "system.cpu = $( grep '^model name' /proc/cpuinfo | sed q )"\
			     "($cpucount)"
		else
			echo "system.cpu = $( grep '^cpu' /proc/cpuinfo | sed q )"\
			     "($cpucount)"
		fi

		echo "system.kernel.options = $( sed q /proc/cmdline )"
	) >> /tmp/bootchart/header
}


case "$1" in
	"start")
		start
		;;
	"stop")
		sleep 2
		stop
		killall bootlogger      2>/dev/null
		;;
	*)
		echo "Usage: $0 {start|stop}"
		;;
esac