#! /bin/sh
if which ionice &>/dev/null;then
	IONICE="ionice -c3"
else
	IONICE=""
fi
if [ "$1" = --n-class ];then
  CGPARAM="$2"
  shift 2
else
  CGPARAM="n"
fi
CGPARAM="-g cpu,memory,blkio:$CGPARAM"
if cgexec $CGPARAM true 2>/dev/null;then
	CGEXEC="cgexec $CGPARAM"
	CGCLASSIFY="cgclassify $CGPARAM"
else
	CGEXEC=""
	CGCLASSIFY="true"
fi
unset CGPARAM
if [ -z "$*" ];then echo >&2 "No PID"
elif [ "$1" = "-p" ];then renice >/dev/null +19 "$@";test -n "$IONICE" && $IONICE "$@";(shift;$CGCLASSIFY "$@")
else exec nice -n19 $IONICE $CGEXEC "$@"
fi