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      1 #!/usr/bin/python
      2 #
      3 # Copyright 2009 the V8 project authors. All rights reserved.
      4 # Redistribution and use in source and binary forms, with or without
      5 # modification, are permitted provided that the following conditions are
      6 # met:
      7 #
      8 #     * Redistributions of source code must retain the above copyright
      9 #       notice, this list of conditions and the following disclaimer.
     10 #     * Redistributions in binary form must reproduce the above
     11 #       copyright notice, this list of conditions and the following
     12 #       disclaimer in the documentation and/or other materials provided
     13 #       with the distribution.
     14 #     * Neither the name of Google Inc. nor the names of its
     15 #       contributors may be used to endorse or promote products derived
     16 #       from this software without specific prior written permission.
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29 
     30 # Simple wrapper for running valgrind and checking the output on
     31 # stderr for memory leaks.
     32 
     33 import subprocess
     34 import sys
     35 import re
     36 
     37 VALGRIND_ARGUMENTS = [
     38   'valgrind',
     39   '--error-exitcode=1',
     40   '--leak-check=full',
     41   '--smc-check=all'
     42 ]
     43 
     44 # Compute the command line.
     45 command = VALGRIND_ARGUMENTS + sys.argv[1:]
     46 
     47 # Run valgrind.
     48 process = subprocess.Popen(command, stderr=subprocess.PIPE)
     49 code = process.wait();
     50 errors = process.stderr.readlines();
     51 
     52 # If valgrind produced an error, we report that to the user.
     53 if code != 0:
     54   sys.stderr.writelines(errors)
     55   sys.exit(code)
     56 
     57 # Look through the leak details and make sure that we don't
     58 # have any definitely, indirectly, and possibly lost bytes.
     59 LEAK_RE = r"(?:definitely|indirectly|possibly) lost: "
     60 LEAK_LINE_MATCHER = re.compile(LEAK_RE)
     61 LEAK_OKAY_MATCHER = re.compile(r"lost: 0 bytes in 0 blocks")
     62 leaks = []
     63 for line in errors:
     64   if LEAK_LINE_MATCHER.search(line):
     65     leaks.append(line)
     66     if not LEAK_OKAY_MATCHER.search(line):
     67       sys.stderr.writelines(errors)
     68       sys.exit(1)
     69 
     70 # Make sure we found between 2 and 3 leak lines.
     71 if len(leaks) < 2 or len(leaks) > 3:
     72   sys.stderr.writelines(errors)
     73   sys.stderr.write('\n\n#### Malformed valgrind output.\n#### Exiting.\n')
     74   sys.exit(1)
     75 
     76 # No leaks found.
     77 sys.exit(0)
     78