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 sys 11 12 class LineBuffered(object): 13 """Disable buffering on a file object.""" 14 def __init__(self, stream): 15 self.stream = stream 16 17 def write(self, data): 18 self.stream.write(data) 19 if '\n' in data: 20 self.stream.flush() 21 22 def __getattr__(self, attr): 23 return getattr(self.stream, attr) 24 25 26 def disable_buffering(): 27 """Makes this process and child processes stdout unbuffered.""" 28 if not os.environ.get('PYTHONUNBUFFERED'): 29 # Since sys.stdout is a C++ object, it's impossible to do 30 # sys.stdout.write = lambda... 31 sys.stdout = LineBuffered(sys.stdout) 32 os.environ['PYTHONUNBUFFERED'] = 'x' 33 34 35 def set_symbolizer_path(): 36 """Set the path to the llvm-symbolize binary in the Chromium source tree.""" 37 if not os.environ.get('LLVM_SYMBOLIZER_PATH'): 38 script_dir = os.path.dirname(os.path.abspath(__file__)) 39 # Assume this script resides three levels below src/ (i.e. 40 # src/tools/valgrind/asan/). 41 src_root = os.path.join(script_dir, "..", "..", "..") 42 symbolizer_path = os.path.join(src_root, 'third_party', 43 'llvm-build', 'Release+Asserts', 'bin', 'llvm-symbolizer') 44 assert(os.path.isfile(symbolizer_path)) 45 os.environ['LLVM_SYMBOLIZER_PATH'] = os.path.abspath(symbolizer_path) 46 47 48 def main(): 49 disable_buffering() 50 set_symbolizer_path() 51 asan_symbolize.demangle = True 52 asan_symbolize.fix_filename_patterns = sys.argv[1:] 53 asan_symbolize.logfile = sys.stdin 54 loop = asan_symbolize.SymbolizationLoop() 55 loop.process_logfile() 56 57 if __name__ == '__main__': 58 main() 59
