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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
| from signal import signal, SIGPIPE, SIG_DFL
|
| signal(SIGPIPE, SIG_DFL)
|
| 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 = [], {}
| otot, ntot = 0, 0
|
| for a in old:
| if a in new:
| common[a] = 1
|
| for name in old:
| otot += old[name]
| if name not in common:
| remove += 1
| down += old[name]
| delta.append((-old[name], name))
|
| for name in new:
| ntot += new[name]
| 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))
|
| print("Total: Before=%d, After=%d, chg %+.2f%%" % \
| (otot, ntot, (ntot - otot)*100.0/otot))
|
|
