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- #!/usr/bin/python
- #
- # Copyright 2004 Matt Mackall <mpm@selenic.com>
- #
- # inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
- #
- # This software may be used and distributed according to the terms
- # of the GNU General Public License, incorporated herein by reference.
- import sys, os, re
- if len(sys.argv) != 3:
- sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
- sys.exit(-1)
- def getsizes(file):
- sym = {}
- for l in os.popen("nm --size-sort " + file).readlines():
- size, type, name = l[:-1].split()
- if type in "tTdDbBrR":
- # strip generated symbols
- if name.startswith("__mod_"): continue
- if name.startswith("SyS_"): continue
- if name.startswith("compat_SyS_"): continue
- if name == "linux_banner": continue
- # statics and some other optimizations adds random .NUMBER
- name = re.sub(r'\.[0-9]+', '', name)
- sym[name] = sym.get(name, 0) + int(size, 16)
- return sym
- old = getsizes(sys.argv[1])
- new = getsizes(sys.argv[2])
- grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
- delta, common = [], {}
- for a in old:
- if a in new:
- common[a] = 1
- for name in old:
- if name not in common:
- remove += 1
- down += old[name]
- delta.append((-old[name], name))
- for name in new:
- if name not in common:
- add += 1
- up += new[name]
- delta.append((new[name], name))
- for name in common:
- d = new.get(name, 0) - old.get(name, 0)
- if d>0: grow, up = grow+1, up+d
- if d<0: shrink, down = shrink+1, down-d
- delta.append((d, name))
- delta.sort()
- delta.reverse()
- print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
- (add, remove, grow, shrink, up, -down, up-down))
- print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta"))
- for d, n in delta:
- if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
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