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d960600d MM |
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 | ||
10 | import sys, os, re | |
11 | ||
12 | if len(sys.argv) != 3: | |
13 | sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) | |
14 | sys.exit(-1) | |
15 | ||
16 | def getsizes(file): | |
17 | sym = {} | |
18 | for l in os.popen("nm --size-sort " + file).readlines(): | |
19 | size, type, name = l[:-1].split() | |
c50e3f51 JD |
20 | if type in "tTdDbBrR": |
21 | # strip generated symbols | |
c2e182fa | 22 | if name.startswith("__mod_"): continue |
b25c2ff5 JT |
23 | if name.startswith("SyS_"): continue |
24 | if name.startswith("compat_SyS_"): continue | |
5a7b2d27 | 25 | if name == "linux_banner": continue |
21cf6e58 AK |
26 | # statics and some other optimizations adds random .NUMBER |
27 | name = re.sub(r'\.[0-9]+', '', name) | |
51849738 | 28 | sym[name] = sym.get(name, 0) + int(size, 16) |
d960600d MM |
29 | return sym |
30 | ||
31 | old = getsizes(sys.argv[1]) | |
32 | new = getsizes(sys.argv[2]) | |
33 | grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 | |
34 | delta, common = [], {} | |
35 | ||
36 | for a in old: | |
37 | if a in new: | |
38 | common[a] = 1 | |
39 | ||
40 | for name in old: | |
41 | if name not in common: | |
42 | remove += 1 | |
43 | down += old[name] | |
44 | delta.append((-old[name], name)) | |
45 | ||
46 | for name in new: | |
47 | if name not in common: | |
48 | add += 1 | |
49 | up += new[name] | |
50 | delta.append((new[name], name)) | |
51 | ||
52 | for 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 | ||
58 | delta.sort() | |
59 | delta.reverse() | |
60 | ||
61 | print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ | |
62 | (add, remove, grow, shrink, up, -down, up-down) | |
63 | print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta") | |
64 | for d, n in delta: | |
65 | if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d) |