3 # Copyright 2004 Matt Mackall <mpm@selenic.com>
5 # inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
7 # This software may be used and distributed according to the terms
8 # of the GNU General Public License, incorporated herein by reference.
11 from signal import signal, SIGPIPE, SIG_DFL
13 signal(SIGPIPE, SIG_DFL)
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 categorize output based on symbol type\n")
19 sys.stderr.write("-d Show delta of Data Section\n")
20 sys.stderr.write("-t Show delta of text Section\n")
23 re_NUMBER = re.compile(r'\.[0-9]+')
25 def getsizes(file, format):
27 with os.popen("nm --size-sort " + file) as f:
29 if line.startswith("\n") or ":" in line:
31 size, type, name = line.split()
33 # strip generated symbols
34 if name.startswith("__mod_"): continue
35 if name.startswith("__se_sys"): continue
36 if name.startswith("__se_compat_sys"): continue
37 if name.startswith("__addressable_"): continue
38 if name == "linux_banner": continue
39 if name == "vermagic": continue
40 # statics and some other optimizations adds random .NUMBER
41 name = re_NUMBER.sub('', name)
42 sym[name] = sym.get(name, 0) + int(size, 16)
45 def calc(oldfile, newfile, format):
46 old = getsizes(oldfile, format)
47 new = getsizes(newfile, format)
48 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
49 delta, common = [], {}
58 if name not in common:
61 delta.append((-old[name], name))
65 if name not in common:
68 delta.append((new[name], name))
71 d = new.get(name, 0) - old.get(name, 0)
72 if d>0: grow, up = grow+1, up+d
73 if d<0: shrink, down = shrink+1, down-d
74 delta.append((d, name))
78 return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
80 def print_result(symboltype, symbolformat, argc):
81 grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
82 calc(sys.argv[argc - 1], sys.argv[argc], symbolformat)
84 print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
85 (add, remove, grow, shrink, up, -down, up-down))
86 print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta"))
88 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
91 percent = (ntot - otot) * 100.0 / otot
94 print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
96 if sys.argv[1] == "-c":
97 print_result("Function", "tT", 3)
98 print_result("Data", "dDbB", 3)
99 print_result("RO Data", "rR", 3)
100 elif sys.argv[1] == "-d":
101 print_result("Data", "dDbBrR", 3)
102 elif sys.argv[1] == "-t":
103 print_result("Function", "tT", 3)
105 print_result("Function", "tTdDbBrR", 2)