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.startswith("__mod_"): continue 23 if name == "linux_banner": continue 24 # statics and some other optimizations adds random .NUMBER 25 name = re.sub(r'\.[0-9]+', '', name) 26 sym[name] = sym.get(name, 0) + int(size, 16) 27 return sym 28 29old = getsizes(sys.argv[1]) 30new = getsizes(sys.argv[2]) 31grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 32delta, common = [], {} 33 34for a in old: 35 if a in new: 36 common[a] = 1 37 38for name in old: 39 if name not in common: 40 remove += 1 41 down += old[name] 42 delta.append((-old[name], name)) 43 44for name in new: 45 if name not in common: 46 add += 1 47 up += new[name] 48 delta.append((new[name], name)) 49 50for name in common: 51 d = new.get(name, 0) - old.get(name, 0) 52 if d>0: grow, up = grow+1, up+d 53 if d<0: shrink, down = shrink+1, down-d 54 delta.append((d, name)) 55 56delta.sort() 57delta.reverse() 58 59print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ 60 (add, remove, grow, shrink, up, -down, up-down) 61print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta") 62for d, n in delta: 63 if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d) 64