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 | for f in sys.argv[1], sys.argv[2]:
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17 | if not os.path.exists(f):
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18 | sys.stderr.write("Error: file '%s' does not exist\n" % f)
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19 | sys.exit(-1)
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20 |
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21 | def getsizes(file):
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22 | sym = {}
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23 | for l in os.popen("nm --size-sort " + file).readlines():
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24 | size, type, name = l[:-1].split()
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25 | if type in "tTdDbBrR":
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26 | if "." in name: name = "static." + name.split(".")[0]
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27 | sym[name] = sym.get(name, 0) + int(size, 16)
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28 | for l in os.popen("readelf -S " + file).readlines():
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29 | x = l.split()
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30 | if len(x)<6 or x[1] != ".rodata": continue
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31 | sym[".rodata"] = int(x[5], 16)
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32 | return sym
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33 |
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34 | old = getsizes(sys.argv[1])
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35 | new = getsizes(sys.argv[2])
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36 | grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
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37 | delta, common = [], {}
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38 |
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39 | for a in old:
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40 | if a in new:
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41 | common[a] = 1
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42 |
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43 | for name in old:
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44 | if name not in common:
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45 | remove += 1
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46 | down += old[name]
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47 | delta.append((-old[name], name))
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48 |
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49 | for name in new:
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50 | if name not in common:
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51 | add += 1
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52 | up += new[name]
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53 | delta.append((new[name], name))
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54 |
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55 | for name in common:
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56 | d = new.get(name, 0) - old.get(name, 0)
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57 | if d>0: grow, up = grow+1, up+d
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58 | if d<0: shrink, down = shrink+1, down-d
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59 | delta.append((d, name))
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60 |
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61 | delta.sort()
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62 | delta.reverse()
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63 |
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64 | print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta")
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65 | for d, n in delta:
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66 | if d: print "%-48s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)
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67 | print "-"*78
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68 | total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\
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69 | % (add, remove, grow, shrink, up, -down, up-down)
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70 | print total % (" "*(80-len(total)))
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