#!/bin/sh

LOCK_FILE=/tmp/.snail.nvrun.lock
NVRUN=/usr/local/bin/nvrun

while [ 1 ]; do
	pgrep -f $NVRUN &>/dev/null

	if [ 0 -ne $? ]; then

		(
		for i in `seq 16`; do
			flock -n 9
	
			if [[ 0 -ne $? && 5 -eq $i ]]; then
				echo "Cann't lock $COUNT_FILE. Exiting..."
				exit -1
	
			elif [ 0 -eq $? ]; then
				break
			fi
	
			sleep 1
		done

		snail.nvoff
		[ 0 -ne $? ] && echo "Error: Cann't switch off nVidia graphics. Exiting..." && exit -1
		echo "nVidia chip powered off."
		exit 0
		) 9>$LOCK_FILE ; exit $?
	fi

	sleep 1
done