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.startswith("SyS_"): continue 24 if name.startswith("compat_SyS_"): continue 25 if name == "linux_banner": continue 26 # statics and some other optimizations adds random .NUMBER 27 name = re.sub(r'\.[0-9]+', '', name) 28 sym[name] = sym.get(name, 0) + int(size, 16) 29 return sym 30 31old = getsizes(sys.argv[1]) 32new = getsizes(sys.argv[2]) 33grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 34delta, common = [], {} 35 36for a in old: 37 if a in new: 38 common[a] = 1 39 40for name in old: 41 if name not in common: 42 remove += 1 43 down += old[name] 44 delta.append((-old[name], name)) 45 46for name in new: 47 if name not in common: 48 add += 1 49 up += new[name] 50 delta.append((new[name], name)) 51 52for name in common: 53 d = new.get(name, 0) - old.get(name, 0) 54 if d>0: grow, up = grow+1, up+d 55 if d<0: shrink, down = shrink+1, down-d 56 delta.append((d, name)) 57 58delta.sort() 59delta.reverse() 60 61print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ 62 (add, remove, grow, shrink, up, -down, up-down)) 63print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")) 64for d, n in delta: 65 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) 66