#!/bin/sh
 
export DIRECTORY=/var/cache/fah
USER=fah
export OUTPUT=/dev/null
 
test -f $DIRECTORY/fah6 || exit 0
 
 
title() {
  echo $1
  error=0
}
 
status() {
  error=0
}
 
case "$1" in
 
  start)
    title "Starting Folding@Home."
    cd $DIRECTORY
    su $USER -c 'nohup $DIRECTORY/fah6 >$OUTPUT 2>&1 &'
    error=$?
    status
;;
 
  stop)
    title "Stopping Folding@Home."
    killall -15 $DIRECTORY/fah6 || error=$?
    status
;;
 
  restart)
    $0 stop; $0 start
;;
 
  unthrottle)
    FHPID=$(ps aux | grep FahCore | grep [TR]N | grep -v grep | awk '{print $2}')
    CLPID=$(ps aux | grep "cpulimit -p $FHPID -l" | grep -v grep | awk '{print $2}')
    if [ "$CLPID" != "" ]; then
      echo "Killing existing cpulimit, $CLPID"
      kill -9 $CLPID
    fi
    kill -18 $FHPID # It may be in SIGSTOP, so send it a SIGCONT
;;
 
  throttle)
    $0 unthrottle;
    FHPID=$(ps aux | grep FahCore | grep [TR]N | grep -v grep | awk '{print $2}')
    if [ "$FHPID" != "" ]; then
      echo "Found process $FHPID, throttle to 50%"
      nohup cpulimit -p $FHPID -l 50 >$OUTPUT 2>&1 &
    else
      echo "Could not find fah process!"
    fi
;;
 
 
  *)
    echo "Usage: $0 { start | stop | restart | throttle | unthrottle }"
    exit 1
;;
 
esac
 
exit 0