#!/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 from signal import signal, SIGPIPE, SIG_DFL signal(SIGPIPE, SIG_DFL) if len(sys.argv) < 3: sys.stderr.write("usage: %s [option] file1 file2\n" % sys.argv[0]) sys.stderr.write("The options are:\n") sys.stderr.write("-c categorize output based on symbol type\n") sys.stderr.write("-d Show delta of Data Section\n") sys.stderr.write("-t Show delta of text Section\n") sys.exit(-1) re_NUMBER = re.compile(r'\.[0-9]+') def getsizes(file, format): sym = {} with os.popen("nm --size-sort " + file) as f: for line in f: size, type, name = line.split() if type in format: # strip generated symbols if name.startswith("__mod_"): continue if name.startswith("__se_sys"): continue if name.startswith("__se_compat_sys"): continue if name == "linux_banner": continue # statics and some other optimizations adds random .NUMBER name = re_NUMBER.sub('', name) sym[name] = sym.get(name, 0) + int(size, 16) return sym def calc(oldfile, newfile, format): old = getsizes(oldfile, format) new = getsizes(newfile, format) grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 delta, common = [], {} otot, ntot = 0, 0 for a in old: if a in new: common[a] = 1 for name in old: otot += old[name] if name not in common: remove += 1 down += old[name] delta.append((-old[name], name)) for name in new: ntot += new[name] 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() return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot def print_result(symboltype, symbolformat, argc): grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \ calc(sys.argv[argc - 1], sys.argv[argc], symbolformat) 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" % (symboltype, "old", "new", "delta")) for d, n in delta: if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) if otot: percent = (ntot - otot) * 100.0 / otot else: percent = 0 print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent)) if sys.argv[1] == "-c": print_result("Function", "tT", 3) print_result("Data", "dDbB", 3) print_result("RO Data", "rR", 3) elif sys.argv[1] == "-d": print_result("Data", "dDbBrR", 3) elif sys.argv[1] == "-t": print_result("Function", "tT", 3) else: print_result("Function", "tTdDbBrR", 2)