bin/objcounts.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright (c) 2005 The SCons Foundation
   4 #
   5 # Permission is hereby granted, free of charge, to any person obtaining
   6 # a copy of this software and associated documentation files (the
   7 # "Software"), to deal in the Software without restriction, including
   8 # without limitation the rights to use, copy, modify, merge, publish,
   9 # distribute, sublicense, and/or sell copies of the Software, and to
  10 # permit persons to whom the Software is furnished to do so, subject to
  11 # the following conditions:
  12 #
  13 # The above copyright notice and this permission notice shall be included
  14 # in all copies or substantial portions of the Software.
  15 #
  16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  17 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  18 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 import re
  24 import sys
  25
  26 filenames = sys.argv[1:]
  27
  28 if len(sys.argv) != 3:
  29     print("""Usage:  objcounts.py file1 file2
  30
  31 Compare the --debug=object counts from two build logs.
  32 """)
  33     sys.exit(0)
  34
  35 def fetch_counts(fname):
  36     contents = open(fname).read()
  37     m = re.search('\nObject counts:(\n\s[^\n]*)*', contents, re.S)
  38     lines = m.group().split('\n')
  39     list = [l.split() for l in lines if re.match('\s+\d', l)]
  40     d = {}
  41     for l in list:
  42         d[l[-1]] = list(map(int, l[:-1]))
  43     return d
  44
  45 c1 = fetch_counts(sys.argv[1])
  46 c2 = fetch_counts(sys.argv[2])
  47
  48 common = {}
  49 for k in list(c1.keys()):
  50     try:
  51         common[k] = (c1[k], c2[k])
  52     except KeyError:
  53         # Transition:  we added the module to the names of a bunch of
  54         # the logged objects.  Assume that c1 might be from an older log
  55         # without the modules in the names, and look for an equivalent
  56         # in c2.
  57         if not '.' in k:
  58             s = '.'+k
  59             l = len(s)
  60             for k2 in list(c2.keys()):
  61                 if k2[-l:] == s:
  62                     common[k2] = (c1[k], c2[k2])
  63                     del c1[k]
  64                     del c2[k2]
  65                     break
  66     else:
  67         del c1[k]
  68         del c2[k]
  69
  70 def diffstr(c1, c2):
  71     try:
  72         d = c2 - c1
  73     except TypeError:
  74         d = ''
  75     else:
  76         if d:
  77             d = '[%+d]' % d
  78         else:
  79             d = ''
  80     return " %5s/%-5s %-8s" % (c1, c2, d)
  81
  82 def printline(c1, c2, classname):
  83     print(diffstr(c1[2], c2[2]) + \
  84           diffstr(c1[3], c2[3]) + \
  85           ' ' + classname)
  86
  87 for k in sorted(common.keys()):
  88     c = common[k]
  89     printline(c[0], c[1], k)
  90
  91 for k in sorted(list(c1.keys())):
  92     printline(c1[k], ['--']*4, k)
  93
  94 for k in sorted(list(c2.keys())):
  95     printline(['--']*4, c2[k], k)
  96
  97 # Local Variables:
  98 # tab-width:4
  99 # indent-tabs-mode:nil
 100 # End:
 101 # vim: set expandtab tabstop=4 shiftwidth=4: