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Andy Shevchenko62383ec2020-12-09 13:50:17 +02001#!/usr/bin/env python3
Matt Mackalld9606002006-01-08 01:05:19 -08002#
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
Alexey Dobriyaneef06b82016-11-10 10:46:13 -080011from signal import signal, SIGPIPE, SIG_DFL
12
13signal(SIGPIPE, SIG_DFL)
Matt Mackalld9606002006-01-08 01:05:19 -080014
15if len(sys.argv) != 3:
16 sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
17 sys.exit(-1)
18
19def getsizes(file):
20 sym = {}
21 for l in os.popen("nm --size-sort " + file).readlines():
22 size, type, name = l[:-1].split()
Jean Delvarec50e3f52011-03-22 16:35:13 -070023 if type in "tTdDbBrR":
24 # strip generated symbols
Josh Triplettc2e182f2013-11-07 12:03:06 +110025 if name.startswith("__mod_"): continue
Josh Triplettb25c2ff2014-08-17 19:45:46 -050026 if name.startswith("SyS_"): continue
27 if name.startswith("compat_SyS_"): continue
Josh Triplett5a7b2d22013-11-07 12:03:06 +110028 if name == "linux_banner": continue
Andi Kleen21cf6e52013-10-22 08:46:23 -070029 # statics and some other optimizations adds random .NUMBER
30 name = re.sub(r'\.[0-9]+', '', name)
Rob Landley51849732006-06-25 05:47:10 -070031 sym[name] = sym.get(name, 0) + int(size, 16)
Matt Mackalld9606002006-01-08 01:05:19 -080032 return sym
33
34old = getsizes(sys.argv[1])
35new = getsizes(sys.argv[2])
36grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
37delta, common = [], {}
Vineet Guptab21e91c2016-05-19 17:09:17 -070038otot, ntot = 0, 0
Matt Mackalld9606002006-01-08 01:05:19 -080039
40for a in old:
41 if a in new:
42 common[a] = 1
43
44for name in old:
Vineet Guptab21e91c2016-05-19 17:09:17 -070045 otot += old[name]
Matt Mackalld9606002006-01-08 01:05:19 -080046 if name not in common:
47 remove += 1
48 down += old[name]
49 delta.append((-old[name], name))
50
51for name in new:
Vineet Guptab21e91c2016-05-19 17:09:17 -070052 ntot += new[name]
Matt Mackalld9606002006-01-08 01:05:19 -080053 if name not in common:
54 add += 1
55 up += new[name]
56 delta.append((new[name], name))
57
58for name in common:
59 d = new.get(name, 0) - old.get(name, 0)
60 if d>0: grow, up = grow+1, up+d
61 if d<0: shrink, down = shrink+1, down-d
62 delta.append((d, name))
63
64delta.sort()
65delta.reverse()
66
Sergey Senozhatsky72214a22016-01-14 15:16:53 -080067print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
68 (add, remove, grow, shrink, up, -down, up-down))
69print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta"))
Matt Mackalld9606002006-01-08 01:05:19 -080070for d, n in delta:
Sergey Senozhatsky72214a22016-01-14 15:16:53 -080071 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
Vineet Guptab21e91c2016-05-19 17:09:17 -070072
Riku Voipio8cde0da2016-07-26 15:21:20 -070073print("Total: Before=%d, After=%d, chg %+.2f%%" % \
74 (otot, ntot, (ntot - otot)*100.0/otot))