PROCESSES=100
function clean() {
	 ps -ef | grep "dgram_mod_survey" | awk  '{print $2}' | xargs -i kill -9 {}
	 ipcrm -a
}

function start_server() {
	clean
	./dgram_mod_survey server 8 & server_pid=$!
	echo "start server pid ${server_pid}"
}

function start_clients() {
	for (( i=0; i<$PROCESSES; i++ ))
	do
		# pid_arr[$i]=$i
		./dgram_mod_survey client 8 & pid_arr[$i]=$!
		echo "start ${pid_arr[$i]}" 
	done
}

function close_clients() {
	for (( i=0; i<$PROCESSES; i++ ))
	do
		echo "kill ${pid_arr[$i]}" 
		kill -9 ${pid_arr[$i]}
		#./dgram_mod_survey client 8 & ${pid_arr[$i]}=$!
	done
}


case ${1} in
  "server")
  start_server
  ;;
  "clients")
  start_clients
  sleep 5
	close_clients
  ;;
  "")
	start_server
	sleep 1
	start_clients
	sleep 5
	close_clients
  ;;
  *)
  echo "error input"
  exit 1
  ;;
esac