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      1 #!/bin/bash
      2 
      3 if [ $# -ne 2 ]
      4 then
      5   echo "usage: bloatcheck old new"
      6   exit 1
      7 fi
      8 
      9 addline()
     10 {
     11   NEXT="$(printf "%s% $((50-${#LASTNAME}))d% 10d %10d" "$LASTNAME" "$OLD" "$NEW" "$DELTA")"
     12   [ -z "$STUFF" ] &&
     13     STUFF="$NEXT" ||
     14     STUFF="$(printf "%s\n%s" "$STUFF" "$NEXT")"
     15 }
     16 
     17 do_bloatcheck()
     18 {
     19   LASTNAME=
     20   DELTA=0
     21   TOTAL=0
     22   OLD=0
     23   NEW=0
     24   STUFF=
     25 
     26   printf "name% 46s% 10s% 11s\n" old new delta
     27   echo "-----------------------------------------------------------------------"
     28   while read a b c d
     29   do
     30     THISNAME=$(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 
     61 DIFF1=`mktemp base.XXXXXXX`
     62 DIFF2=`mktemp bloat.XXXXXXX`
     63 trap "rm $DIFF1 $DIFF2" EXIT
     64 nm --size-sort "$1" | sort -k3,3 > $DIFF1
     65 nm --size-sort "$2" | sort -k3,3 > $DIFF2
     66 diff -U 0 $DIFF1 $DIFF2 | tail -n +3 | sed -n 's/^\([-+]\)/\1 /p' \
     67   | sort -k4,4 | do_bloatcheck
     68