| 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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