1 #!/usr/bin/env 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 # Uses valgrind from third_party/valgrind. Assumes the executable is passed 33 # with a path relative to the v8 root. 34 35 36 from os import path 37 import platform 38 import re 39 import subprocess 40 import sys 41 42 V8_ROOT = path.dirname(path.dirname(path.abspath(__file__))) 43 MACHINE = 'linux_x64' if platform.machine() == 'x86_64' else 'linux_x86' 44 VALGRIND_ROOT = path.join(V8_ROOT, 'third_party', 'valgrind', MACHINE) 45 VALGRIND_BIN = path.join(VALGRIND_ROOT, 'bin', 'valgrind') 46 VALGRIND_LIB = path.join(VALGRIND_ROOT, 'lib', 'valgrind') 47 48 VALGRIND_ARGUMENTS = [ 49 VALGRIND_BIN, 50 '--error-exitcode=1', 51 '--leak-check=full', 52 '--smc-check=all', 53 ] 54 55 if len(sys.argv) < 2: 56 print 'Please provide an executable to analyze.' 57 sys.exit(1) 58 59 executable = path.join(V8_ROOT, sys.argv[1]) 60 if not path.exists(executable): 61 print 'Cannot find the file specified: %s' % executable 62 sys.exit(1) 63 64 # Compute the command line. 65 command = VALGRIND_ARGUMENTS + [executable] + sys.argv[2:] 66 67 # Run valgrind. 68 process = subprocess.Popen( 69 command, 70 stderr=subprocess.PIPE, 71 env={'VALGRIND_LIB': VALGRIND_LIB} 72 ) 73 code = process.wait(); 74 errors = process.stderr.readlines(); 75 76 # If valgrind produced an error, we report that to the user. 77 if code != 0: 78 sys.stderr.writelines(errors) 79 sys.exit(code) 80 81 # Look through the leak details and make sure that we don't 82 # have any definitely, indirectly, and possibly lost bytes. 83 LEAK_RE = r"(?:definitely|indirectly|possibly) lost: " 84 LEAK_LINE_MATCHER = re.compile(LEAK_RE) 85 LEAK_OKAY_MATCHER = re.compile(r"lost: 0 bytes in 0 blocks") 86 leaks = [] 87 for line in errors: 88 if LEAK_LINE_MATCHER.search(line): 89 leaks.append(line) 90 if not LEAK_OKAY_MATCHER.search(line): 91 sys.stderr.writelines(errors) 92 sys.exit(1) 93 94 # Make sure we found between 2 and 3 leak lines. 95 if len(leaks) < 2 or len(leaks) > 3: 96 sys.stderr.writelines(errors) 97 sys.stderr.write('\n\n#### Malformed valgrind output.\n#### Exiting.\n') 98 sys.exit(1) 99 100 # No leaks found. 101 sys.stderr.writelines(errors) 102 sys.exit(0) 103