LXR toybox/scripts/bloatcheck

   1#!/bin/bash
   2
   3if [ $# -ne 2 ]
   4then
   5  echo "usage: bloatcheck old new"
   6  exit 1
   7fi
   8
   9addline()
  10{
  11  NEXT="$(printf "%s% $((50-${#LASTNAME}))d% 10d %10d" "$LASTNAME" "$OLD" "$NEW" "$DELTA")"
  12  [ -z "$STUFF" ] &&
  13    STUFF="$NEXT" ||
  14    STUFF="$(printf "%s\n%s" "$STUFF" "$NEXT")"
  15}
  16
  17do_bloatcheck()
  18{
  19  LASTNAME=
  20  DELTA=0
  21  TOTAL=0
  22  OLD=0
  23  NEW=0
  24  STUFF=
  25
  26  printf "name% 46s% 10s% 11s\n" old new delta
  27  echo "-----------------------------------------------------------------------"
  28  while read a b c d
  29  do
  30    THISNAME=$(echo "$d" | sed 's/[.][0-9]*$//')
  31
  32    if [ "$LASTNAME" != "$THISNAME" ]
  33    then
  34      TOTAL=$(($TOTAL+$DELTA))
  35      [ $DELTA -ne 0 ] && addline
  36      LASTNAME="$THISNAME"
  37      DELTA=0
  38      OLD=0
  39      NEW=0
  40    fi
  41
  42    SIZE=$(printf "%d" "0x$b")
  43    if [ "$a" == "-" ]
  44    then
  45      OLD=$(($OLD+$SIZE))
  46      SIZE=$((-1*$SIZE))
  47    else
  48      NEW=$(($NEW+$SIZE))
  49    fi
  50    DELTA=$(($DELTA+$SIZE))
  51  done
  52
  53  TOTAL=$(($TOTAL+$DELTA))
  54  [ $DELTA -ne 0 ] && addline
  55
  56  echo "$STUFF" | sort -k4,4nr
  57  echo "-----------------------------------------------------------------------"
  58  printf "% 71d total\n" "$TOTAL"
  59}
  60
  61DIFF1=`mktemp base.XXXXXXX`
  62DIFF2=`mktemp bloat.XXXXXXX`
  63trap "rm $DIFF1 $DIFF2" EXIT
  64nm --size-sort "$1" | sort -k3,3 > $DIFF1
  65nm --size-sort "$2" | sort -k3,3 > $DIFF2
  66diff -U 0 $DIFF1 $DIFF2 | tail -n +3 | sed -n 's/^\([-+]\)/\1 /p' \
  67  | sort -k4,4 | do_bloatcheck
  68