blob: f82d6d378c8f06655133e4b2adc07fb049d295ea [file] [log] [blame]
#!/usr/bin/python
#
# Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
# Simple wrapper for running Valgrind and checking the output on
# stderr for memory leaks.
import subprocess
import sys
import re
VALGRIND_ARGUMENTS = [
'valgrind',
'--error-exitcode=1',
'--leak-check=full',
'--trace-children=yes',
'--ignore-ranges=0x000-0xFFF', # Used for implicit null checks.
'--vex-iropt-level=1' # Valgrind crashes with the default level (2).
]
# Compute the command line.
command = VALGRIND_ARGUMENTS + sys.argv[1:]
# Run Valgrind.
process = subprocess.Popen(
command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
code = process.wait()
output = process.stdout.readlines()
errors = process.stderr.readlines()
# Always print the output, but leave out the 3 line banner printed
# by certain versions of Valgrind.
if len(output) > 0 and output[0].startswith("** VALGRIND_ROOT="):
output = output[3:]
sys.stdout.writelines(output)
# If Valgrind produced an error, we report that to the user.
if code != 0:
sys.stderr.writelines(errors)
sys.exit(code)
# Look through the leak details and make sure that we don't have
# any definitely or indirectly lost bytes. We allow possibly lost
# bytes to lower the risk of false positives.
LEAK_RE = r"(?:definitely|indirectly) lost:"
LEAK_LINE_MATCHER = re.compile(LEAK_RE)
LEAK_OKAY_MATCHER = re.compile(r"lost: 0 bytes in 0 blocks")
leaks = []
for line in errors:
if LEAK_LINE_MATCHER.search(line):
leaks.append(line)
if not LEAK_OKAY_MATCHER.search(line):
sys.stderr.writelines(errors)
sys.exit(1)
# Make sure we found the right number of leak lines.
if not len(leaks) in [0, 2, 3]:
sys.stderr.writelines(errors)
sys.stderr.write('\n\n#### Malformed Valgrind output.\n#### Exiting.\n')
sys.exit(1)
# Success.
sys.exit(0)