#!/bin/bash

PIDFILE=""
PIDVAL=""

pidfile() {
  DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
  PIDFILE="$DIR/pid"
  if [ ! -f $PIDFILE ]; then 
    return PIDFILE
  else
    return ""
  fi
}

pidval() {
	pidfile
	if [ ! -z $PIDFILE ]; then
	  PIDVAL =`pgrep -F "$PIDFILE"`
	else
	  PIDVAL = ""
	fi	
}

pidval
if [ ! -z "$PIDVAL" ]; then
  kill -SIGTERM "$PIDVAL"
  COUNTER=500
  while [ $COUNTER -gt 0 ]; do
    pidval
	if [ -z "$PIDVAL" ]; then
	  COUNTER=0
	else
	  sleep 0.1
	  let ((--COUNTER))
	fi
  done
  if [ ! -z $PIDVAL ]; then
    kill -SIGKILL "$PIDVAL"
	sleep 1
  fi
fi
pidfile
if [ ! -z "$PIDFILE" ]; then
  rm "$PIDFILE"
fi