blob: d9ff038c1b28400799462dad5e29335b092b9a1a
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 | from signal import signal, SIGPIPE, SIG_DFL |
12 | |
13 | signal(SIGPIPE, SIG_DFL) |
14 | |
15 | if len(sys.argv) != 3: |
16 | sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) |
17 | sys.exit(-1) |
18 | |
19 | def getsizes(file): |
20 | sym = {} |
21 | for l in os.popen("nm --size-sort " + file).readlines(): |
22 | size, type, name = l[:-1].split() |
23 | if type in "tTdDbBrR": |
24 | # strip generated symbols |
25 | if name.startswith("__mod_"): continue |
26 | if name.startswith("SyS_"): continue |
27 | if name.startswith("compat_SyS_"): continue |
28 | if name == "linux_banner": continue |
29 | # statics and some other optimizations adds random .NUMBER |
30 | name = re.sub(r'\.[0-9]+', '', name) |
31 | sym[name] = sym.get(name, 0) + int(size, 16) |
32 | return sym |
33 | |
34 | old = getsizes(sys.argv[1]) |
35 | new = getsizes(sys.argv[2]) |
36 | grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 |
37 | delta, common = [], {} |
38 | otot, ntot = 0, 0 |
39 | |
40 | for a in old: |
41 | if a in new: |
42 | common[a] = 1 |
43 | |
44 | for name in old: |
45 | otot += old[name] |
46 | if name not in common: |
47 | remove += 1 |
48 | down += old[name] |
49 | delta.append((-old[name], name)) |
50 | |
51 | for name in new: |
52 | ntot += new[name] |
53 | if name not in common: |
54 | add += 1 |
55 | up += new[name] |
56 | delta.append((new[name], name)) |
57 | |
58 | for 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 | |
64 | delta.sort() |
65 | delta.reverse() |
66 | |
67 | print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ |
68 | (add, remove, grow, shrink, up, -down, up-down)) |
69 | print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")) |
70 | for d, n in delta: |
71 | if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) |
72 | |
73 | print("Total: Before=%d, After=%d, chg %+.2f%%" % \ |
74 | (otot, ntot, (ntot - otot)*100.0/otot)) |
75 |