1#!/usr/bin/python 2# 3# Copyright 2004 Matt Mackall <mpm@selenic.com> 4# 5# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen 6# 7# This software may be used and distributed according to the terms 8# of the GNU General Public License, incorporated herein by reference. 9 10import sys, os, re 11 12if len(sys.argv) != 3: 13 sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) 14 sys.exit(-1) 15 16def getsizes(file): 17 sym = {} 18 for l in os.popen("nm --size-sort " + file).readlines(): 19 size, type, name = l[:-1].split() 20 if type in "tTdDbBrR": 21 # strip generated symbols 22 if name[:6] == "__mod_": continue 23 # function names begin with '.' on 64-bit powerpc 24 if "." in name[1:]: name = "static." + name.split(".")[0] 25 sym[name] = sym.get(name, 0) + int(size, 16) 26 return sym 27 28old = getsizes(sys.argv[1]) 29new = getsizes(sys.argv[2]) 30grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 31delta, common = [], {} 32 33for a in old: 34 if a in new: 35 common[a] = 1 36 37for name in old: 38 if name not in common: 39 remove += 1 40 down += old[name] 41 delta.append((-old[name], name)) 42 43for name in new: 44 if name not in common: 45 add += 1 46 up += new[name] 47 delta.append((new[name], name)) 48 49for name in common: 50 d = new.get(name, 0) - old.get(name, 0) 51 if d>0: grow, up = grow+1, up+d 52 if d<0: shrink, down = shrink+1, down-d 53 delta.append((d, name)) 54 55delta.sort() 56delta.reverse() 57 58print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ 59 (add, remove, grow, shrink, up, -down, up-down) 60print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta") 61for d, n in delta: 62 if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d) 63