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annotate scripts/bloat-o-meter @ 226:6aac63925eff

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Update web pages.
author Rob Landley <rob@landley.net>
date Sat, 05 Jan 2008 18:09:49 -0600
parents a43bdc6f53af
children
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a43bdc6f53af Add bloat-o-meter, make bloatcheck, and scripts/showasm.
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1 #!/usr/bin/python
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2 #
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3 # Copyright 2004 Matt Mackall <mpm@selenic.com>
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4 #
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5 # inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
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6 #
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7 # This software may be used and distributed according to the terms
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8 # of the GNU General Public License, incorporated herein by reference.
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9
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10 import sys, os, re
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11
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12 if len(sys.argv) != 3:
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13 sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
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14 sys.exit(-1)
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15
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16 def getsizes(file):
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17 sym = {}
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18 for l in os.popen("nm --size-sort " + file).readlines():
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19 size, type, name = l[:-1].split()
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20 if type in "tTdDbB":
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21 if "." in name: name = "static." + name.split(".")[0]
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22 sym[name] = sym.get(name, 0) + int(size, 16)
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23 for l in os.popen("readelf -S " + file).readlines():
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24 x = l.split()
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25 if len(x)<6 or x[1] != ".rodata": continue
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26 sym[".rodata"] = int(x[5], 16)
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27 return sym
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28
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29 old = getsizes(sys.argv[1])
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30 new = getsizes(sys.argv[2])
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31 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
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32 delta, common = [], {}
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33
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34 for a in old:
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35 if a in new:
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36 common[a] = 1
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37
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38 for name in old:
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39 if name not in common:
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40 remove += 1
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41 down += old[name]
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42 delta.append((-old[name], name))
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43
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44 for name in new:
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45 if name not in common:
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46 add += 1
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47 up += new[name]
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48 delta.append((new[name], name))
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49
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50 for name in common:
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51 d = new.get(name, 0) - old.get(name, 0)
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52 if d>0: grow, up = grow+1, up+d
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53 if d<0: shrink, down = shrink+1, down-d
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54 delta.append((d, name))
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55
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56 delta.sort()
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57 delta.reverse()
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58
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59 print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta")
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60 for d, n in delta:
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61 if d: print "%-48s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)
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62 print "-"*78
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63 total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\
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64 % (add, remove, grow, shrink, up, -down, up-down)
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65 print total % (" "*(80-len(total)))