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 # statics and some other optimizations adds random .NUMBER
40 name = re_NUMBER.sub('', name)
41 sym[name] = sym.get(name, 0) + int(size, 16)
44 def calc(oldfile, newfile, format):
45 old = getsizes(oldfile, format)
46 new = getsizes(newfile, format)
47 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
48 delta, common = [], {}
57 if name not in common:
60 delta.append((-old[name], name))
64 if name not in common:
67 delta.append((new[name], name))
70 d = new.get(name, 0) - old.get(name, 0)
71 if d>0: grow, up = grow+1, up+d
72 if d<0: shrink, down = shrink+1, down-d
73 delta.append((d, name))
77 return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
79 def print_result(symboltype, symbolformat, argc):
80 grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
81 calc(sys.argv[argc - 1], sys.argv[argc], symbolformat)
83 print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
84 (add, remove, grow, shrink, up, -down, up-down))
85 print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta"))
87 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
90 percent = (ntot - otot) * 100.0 / otot
93 print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
95 if sys.argv[1] == "-c":
96 print_result("Function", "tT", 3)
97 print_result("Data", "dDbB", 3)
98 print_result("RO Data", "rR", 3)
99 elif sys.argv[1] == "-d":
100 print_result("Data", "dDbBrR", 3)
101 elif sys.argv[1] == "-t":
102 print_result("Function", "tT", 3)
104 print_result("Function", "tTdDbBrR", 2)