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 size, type, name = line.split()
31 # strip generated symbols
32 if name.startswith("__mod_"): continue
33 if name.startswith("__se_sys"): continue
34 if name.startswith("__se_compat_sys"): continue
35 if name == "linux_banner": continue
36 # statics and some other optimizations adds random .NUMBER
37 name = re_NUMBER.sub('', name)
38 sym[name] = sym.get(name, 0) + int(size, 16)
41 def 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 = [], {}
54 if name not in common:
57 delta.append((-old[name], name))
61 if name not in common:
64 delta.append((new[name], name))
67 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))
74 return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
76 def 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)
80 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"))
84 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
87 percent = (ntot - otot) * 100.0 / otot
90 print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
92 if sys.argv[1] == "-c":
93 print_result("Function", "tT", 3)
94 print_result("Data", "dDbB", 3)
95 print_result("RO Data", "rR", 3)
96 elif sys.argv[1] == "-d":
97 print_result("Data", "dDbBrR", 3)
98 elif sys.argv[1] == "-t":
99 print_result("Function", "tT", 3)
101 print_result("Function", "tTdDbBrR", 2)