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Matt Mackalld9606002006-01-08 01:05:19 -08001#!/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
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
Maninder Singh192efb72017-11-15 17:31:14 -080015if len(sys.argv) < 3:
16 sys.stderr.write("usage: %s [option] file1 file2\n" % sys.argv[0])
17 sys.stderr.write("The options are:\n")
18 sys.stderr.write("-c cateogrize output based on symbole type\n")
19 sys.stderr.write("-d Show delta of Data Section\n")
20 sys.stderr.write("-t Show delta of text Section\n")
Matt Mackalld9606002006-01-08 01:05:19 -080021 sys.exit(-1)
22
Alexey Dobriyan0d7bbb42016-12-12 16:40:48 -080023re_NUMBER = re.compile(r'\.[0-9]+')
24
Maninder Singh192efb72017-11-15 17:31:14 -080025def getsizes(file, format):
Matt Mackalld9606002006-01-08 01:05:19 -080026 sym = {}
Alexey Dobriyan3af06fd2016-12-12 16:40:45 -080027 with os.popen("nm --size-sort " + file) as f:
28 for line in f:
29 size, type, name = line.split()
Maninder Singh192efb72017-11-15 17:31:14 -080030 if type in format:
Alexey Dobriyan3af06fd2016-12-12 16:40:45 -080031 # strip generated symbols
32 if name.startswith("__mod_"): continue
33 if name.startswith("SyS_"): continue
34 if name.startswith("compat_SyS_"): continue
35 if name == "linux_banner": continue
36 # statics and some other optimizations adds random .NUMBER
Alexey Dobriyan0d7bbb42016-12-12 16:40:48 -080037 name = re_NUMBER.sub('', name)
Alexey Dobriyan3af06fd2016-12-12 16:40:45 -080038 sym[name] = sym.get(name, 0) + int(size, 16)
Matt Mackalld9606002006-01-08 01:05:19 -080039 return sym
40
Maninder Singh192efb72017-11-15 17:31:14 -080041def calc(oldfile, newfile, format):
42 old = getsizes(oldfile, format)
43 new = getsizes(newfile, format)
44 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
45 delta, common = [], {}
46 otot, ntot = 0, 0
Matt Mackalld9606002006-01-08 01:05:19 -080047
Maninder Singh192efb72017-11-15 17:31:14 -080048 for a in old:
49 if a in new:
50 common[a] = 1
Matt Mackalld9606002006-01-08 01:05:19 -080051
Maninder Singh192efb72017-11-15 17:31:14 -080052 for name in old:
53 otot += old[name]
54 if name not in common:
55 remove += 1
56 down += old[name]
57 delta.append((-old[name], name))
Matt Mackalld9606002006-01-08 01:05:19 -080058
Maninder Singh192efb72017-11-15 17:31:14 -080059 for name in new:
60 ntot += new[name]
61 if name not in common:
62 add += 1
63 up += new[name]
64 delta.append((new[name], name))
Matt Mackalld9606002006-01-08 01:05:19 -080065
Maninder Singh192efb72017-11-15 17:31:14 -080066 for name in common:
Matt Mackalld9606002006-01-08 01:05:19 -080067 d = new.get(name, 0) - old.get(name, 0)
68 if d>0: grow, up = grow+1, up+d
69 if d<0: shrink, down = shrink+1, down-d
70 delta.append((d, name))
71
Maninder Singh192efb72017-11-15 17:31:14 -080072 delta.sort()
73 delta.reverse()
74 return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
Matt Mackalld9606002006-01-08 01:05:19 -080075
Maninder Singh192efb72017-11-15 17:31:14 -080076def print_result(symboltype, symbolformat, argc):
77 grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
78 calc(sys.argv[argc - 1], sys.argv[argc], symbolformat)
Vineet Guptab21e91c2016-05-19 17:09:17 -070079
Maninder Singh192efb72017-11-15 17:31:14 -080080 print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
81 (add, remove, grow, shrink, up, -down, up-down))
82 print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta"))
83 for d, n in delta:
84 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
85
86 print("Total: Before=%d, After=%d, chg %+.2f%%" % \
87 (otot, ntot, (ntot - otot)*100.0/otot))
88
89if sys.argv[1] == "-c":
90 print_result("Function", "tT", 3)
91 print_result("Data", "dDbB", 3)
92 print_result("RO Data", "rR", 3)
93elif sys.argv[1] == "-d":
94 print_result("Data", "dDbBrR", 3)
95elif sys.argv[1] == "-t":
96 print_result("Function", "tT", 3)
97else:
98 print_result("Function", "tTdDbBrR", 2)