#!/usr/bin/python## Copyright 2004 Matt Mackall <mpm@selenic.com>## inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen## This software may be used and distributed according to the terms# of the GNU General Public License, incorporated herein by reference. import sys, os, re if len(sys.argv) != 3:    sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])    sys.exit(-1) def getsizes(file):    sym = {}    for l in os.popen("nm --size-sort " + file).readlines():        size, type, name = l[:-1].split()        if type in "tTdDbBrR":            # strip generated symbols            if name[:6] == "__mod_": continue            # function names begin with '.' on 64-bit powerpc            if "." in name[1:]: name = "static." + name.split(".")[0]            sym[name] = sym.get(name, 0) + int(size, 16)    return sym old = getsizes(sys.argv[1])new = getsizes(sys.argv[2])grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0delta, common = [], {} for a in old:    if a in new:        common[a] = 1 for name in old:    if name not in common:        remove += 1        down += old[name]        delta.append((-old[name], name)) for name in new:    if name not in common:        add += 1        up += new[name]        delta.append((new[name], name)) for name in common:        d = new.get(name, 0) - old.get(name, 0)        if d>0: grow, up = grow+1, up+d        if d<0: shrink, down = shrink+1, down-d        delta.append((d, name)) delta.sort()delta.reverse() print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \      (add, remove, grow, shrink, up, -down, up-down)print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")for d, n in delta:    if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)