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v6.9.4
  1#!/usr/bin/env python3
  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, argparse
 11from signal import signal, SIGPIPE, SIG_DFL
 12
 13signal(SIGPIPE, SIG_DFL)
 
 
 14
 15parser = argparse.ArgumentParser(description="Simple script used to compare the symbol sizes of 2 object files")
 16group = parser.add_mutually_exclusive_group()
 17group.add_argument('-c', help='categorize output based on symbol type', action='store_true')
 18group.add_argument('-d', help='Show delta of Data Section', action='store_true')
 19group.add_argument('-t', help='Show delta of text Section', action='store_true')
 20parser.add_argument('-p', dest='prefix', help='Arch prefix for the tool being used. Useful in cross build scenarios')
 21parser.add_argument('file1', help='First file to compare')
 22parser.add_argument('file2', help='Second file to compare')
 23
 24args = parser.parse_args()
 25
 26re_NUMBER = re.compile(r'\.[0-9]+')
 27
 28def getsizes(file, format):
 29    sym = {}
 30    nm = "nm"
 31    if args.prefix:
 32        nm = "{}nm".format(args.prefix)
 33
 34    with os.popen("{} --size-sort {}".format(nm, file)) as f:
 35        for line in f:
 36            if line.startswith("\n") or ":" in line:
 37                continue
 38            size, type, name = line.split()
 39            if type in format:
 40                # strip generated symbols
 41                if name.startswith("__mod_"): continue
 42                if name.startswith("__se_sys"): continue
 43                if name.startswith("__se_compat_sys"): continue
 44                if name.startswith("__addressable_"): continue
 45                if name == "linux_banner": continue
 46                if name == "vermagic": continue
 47                # statics and some other optimizations adds random .NUMBER
 48                name = re_NUMBER.sub('', name)
 49                sym[name] = sym.get(name, 0) + int(size, 16)
 50    return sym
 51
 52def calc(oldfile, newfile, format):
 53    old = getsizes(oldfile, format)
 54    new = getsizes(newfile, format)
 55    grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
 56    delta, common = [], {}
 57    otot, ntot = 0, 0
 58
 59    for a in old:
 60        if a in new:
 61            common[a] = 1
 62
 63    for name in old:
 64        otot += old[name]
 65        if name not in common:
 66            remove += 1
 67            down += old[name]
 68            delta.append((-old[name], name))
 69
 70    for name in new:
 71        ntot += new[name]
 72        if name not in common:
 73            add += 1
 74            up += new[name]
 75            delta.append((new[name], name))
 76
 77    for name in common:
 78        d = new.get(name, 0) - old.get(name, 0)
 79        if d>0: grow, up = grow+1, up+d
 80        if d<0: shrink, down = shrink+1, down-d
 81        delta.append((d, name))
 82
 83    delta.sort(reverse=True)
 84    return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
 85
 86def print_result(symboltype, symbolformat):
 87    grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
 88    calc(args.file1, args.file2, symbolformat)
 89
 90    print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
 91          (add, remove, grow, shrink, up, -down, up-down))
 92    print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta"))
 93    for d, n in delta:
 94        if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
 95
 96    if otot:
 97        percent = (ntot - otot) * 100.0 / otot
 98    else:
 99        percent = 0
100    print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
101
102if args.c:
103    print_result("Function", "tTwW")
104    print_result("Data", "dDbBvV")
105    print_result("RO Data", "rR")
106elif args.d:
107    print_result("Data", "dDbBrRvV")
108elif args.t:
109    print_result("Function", "tTwW")
110else:
111    print_result("Function", "tTdDbBrRvVwW")
v3.15
 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)