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
33import subprocess
34import sys
35import re
36
37VALGRIND_ARGUMENTS = [
38  'valgrind',
39  '--error-exitcode=1',
40  '--leak-check=full',
41  '--smc-check=all'
42]
43
44# Compute the command line.
45command = VALGRIND_ARGUMENTS + sys.argv[1:]
46
47# Run valgrind.
48process = subprocess.Popen(command, stderr=subprocess.PIPE)
49code = process.wait();
50errors = process.stderr.readlines();
51
52# If valgrind produced an error, we report that to the user.
53if 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.
59LEAK_RE = r"(?:definitely|indirectly|possibly) lost: "
60LEAK_LINE_MATCHER = re.compile(LEAK_RE)
61LEAK_OKAY_MATCHER = re.compile(r"lost: 0 bytes in 0 blocks")
62leaks = []
63for 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.
71if 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.
77sys.exit(0)
78