#!/bin/bash
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if [ $# -ne 2 ]
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then
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echo "usage: bloatcheck old new"
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exit 1
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fi
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addline()
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{
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NEXT="$(printf "%s% $((50-${#LASTNAME}))d% 10d %10d" "$LASTNAME" "$OLD" "$NEW" "$DELTA")"
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[ -z "$STUFF" ] &&
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STUFF="$NEXT" ||
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STUFF="$(printf "%s\n%s" "$STUFF" "$NEXT")"
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}
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do_bloatcheck()
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{
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LASTNAME=
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DELTA=0
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TOTAL=0
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OLD=0
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NEW=0
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STUFF=
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printf "name% 46s% 10s% 11s\n" old new delta
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echo "-----------------------------------------------------------------------"
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while read a b c d
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do
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THISNAME=$(echo "$d" | sed 's/[.][0-9]*$//')
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if [ "$LASTNAME" != "$THISNAME" ]
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then
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TOTAL=$(($TOTAL+$DELTA))
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[ $DELTA -ne 0 ] && addline
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LASTNAME="$THISNAME"
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DELTA=0
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OLD=0
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NEW=0
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fi
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SIZE=$(printf "%d" "0x$b")
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if [ "$a" == "-" ]
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then
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OLD=$(($OLD+$SIZE))
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SIZE=$((-1*$SIZE))
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else
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NEW=$(($NEW+$SIZE))
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fi
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DELTA=$(($DELTA+$SIZE))
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done
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TOTAL=$(($TOTAL+$DELTA))
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[ $DELTA -ne 0 ] && addline
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echo "$STUFF" | sort -k4,4nr
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echo "-----------------------------------------------------------------------"
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printf "% 71d total\n" "$TOTAL"
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}
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DIFF1=`mktemp base.XXXXXXX`
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DIFF2=`mktemp bloat.XXXXXXX`
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trap "rm $DIFF1 $DIFF2" EXIT
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nm --size-sort "$1" | sort -k3,3 > $DIFF1
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nm --size-sort "$2" | sort -k3,3 > $DIFF2
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diff -U 0 $DIFF1 $DIFF2 | tail -n +3 | sed -n 's/^\([-+]\)/\1 /p' \
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| sort -k4,4 | do_bloatcheck
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