tools/valgrind/asan/asan_symbolize.py

   1 #!/usr/bin/env python
   2
   3 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 from third_party import asan_symbolize
   8
   9 import os
  10 import re
  11 import sys
  12
  13 def fix_filename(file_name):
  14   for path_to_cut in sys.argv[1:]:
  15     file_name = re.sub(".*" + path_to_cut, "", file_name)
  16   file_name = re.sub(".*asan_[a-z_]*.cc:[0-9]*", "_asan_rtl_", file_name)
  17   file_name = re.sub(".*crtstuff.c:0", "???:0", file_name)
  18   return file_name
  19
  20 class LineBuffered(object):
  21   """Disable buffering on a file object."""
  22   def __init__(self, stream):
  23     self.stream = stream
  24
  25   def write(self, data):
  26     self.stream.write(data)
  27     if '\n' in data:
  28       self.stream.flush()
  29
  30   def __getattr__(self, attr):
  31     return getattr(self.stream, attr)
  32
  33
  34 def disable_buffering():
  35   """Makes this process and child processes stdout unbuffered."""
  36   if not os.environ.get('PYTHONUNBUFFERED'):
  37     # Since sys.stdout is a C++ object, it's impossible to do
  38     # sys.stdout.write = lambda...
  39     sys.stdout = LineBuffered(sys.stdout)
  40     os.environ['PYTHONUNBUFFERED'] = 'x'
  41
  42
  43 def main():
  44   disable_buffering()
  45   asan_symbolize.demangle = True
  46   loop = asan_symbolize.SymbolizationLoop(binary_name_filter=fix_filename)
  47   loop.process_stdin()
  48
  49 if __name__ == '__main__':
  50   main()