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 36from os import path 37import platform 38import re 39import subprocess 40import sys 41 42V8_ROOT = path.dirname(path.dirname(path.abspath(__file__))) 43MACHINE = 'linux_x64' if platform.machine() == 'x86_64' else 'linux_x86' 44VALGRIND_ROOT = path.join(V8_ROOT, 'third_party', 'valgrind', MACHINE) 45VALGRIND_BIN = path.join(VALGRIND_ROOT, 'bin', 'valgrind') 46VALGRIND_LIB = path.join(VALGRIND_ROOT, 'lib', 'valgrind') 47 48VALGRIND_ARGUMENTS = [ 49 VALGRIND_BIN, 50 '--error-exitcode=1', 51 '--leak-check=full', 52 '--smc-check=all', 53] 54 55if len(sys.argv) < 2: 56 print 'Please provide an executable to analyze.' 57 sys.exit(1) 58 59executable = path.join(V8_ROOT, sys.argv[1]) 60if not path.exists(executable): 61 print 'Cannot find the file specified: %s' % executable 62 sys.exit(1) 63 64# Compute the command line. 65command = VALGRIND_ARGUMENTS + [executable] + sys.argv[2:] 66 67# Run valgrind. 68process = subprocess.Popen( 69 command, 70 stderr=subprocess.PIPE, 71 env={'VALGRIND_LIB': VALGRIND_LIB} 72) 73code = process.wait(); 74errors = process.stderr.readlines(); 75 76# If valgrind produced an error, we report that to the user. 77if 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. 83LEAK_RE = r"(?:definitely|indirectly|possibly) lost: " 84LEAK_LINE_MATCHER = re.compile(LEAK_RE) 85LEAK_OKAY_MATCHER = re.compile(r"lost: 0 bytes in 0 blocks") 86leaks = [] 87for 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. 95if 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. 101sys.stderr.writelines(errors) 102sys.exit(0) 103