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#!/usr/bin/env python
# Copyright (c) 2011 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# drmemory_analyze.py
''' Given a Dr. Memory output file, parses errors and uniques them.'''
from collections import defaultdict
import common
import logging
import optparse
import os
import re
import subprocess
import sys
import time
class DrMemoryAnalyzer:
''' Given a set of Dr.Memory output files, parse all the errors out of
them, unique them and output the results.'''
def __init__(self):
self.known_errors = set()
def ReadLine(self):
self.line_ = self.cur_fd_.readline()
def ReadSection(self):
result = [self.line_]
self.ReadLine()
while len(self.line_.strip()) > 0:
result.append(self.line_)
self.ReadLine()
return result
def ParseReportFile(self, filename):
ret = []
self.cur_fd_ = open(filename, 'r')
while True:
self.ReadLine()
if (self.line_ == ''): break
match = re.search("^Error #[0-9]+: (.*)", self.line_)
if match:
self.line_ = match.groups()[0].strip() + "\n"
tmp = self.ReadSection()
ret.append("".join(tmp).strip())
if re.search("SUPPRESSIONS USED:", self.line_):
self.ReadLine()
while self.line_.strip() != "":
line = self.line_.strip()
(count, name) = re.match(" *([0-9]+)x(?: \(leaked .*\))?: (.*)",
line).groups()
count = int(count)
self.used_suppressions[name] += count
self.ReadLine()
if self.line_.startswith("ASSERT FAILURE"):
ret.append(self.line_.strip())
self.cur_fd_.close()
return ret
def Report(self, filenames, testcase, check_sanity):
sys.stdout.flush()
# TODO(timurrrr): support positive tests / check_sanity==True
to_report = []
self.used_suppressions = defaultdict(int)
for f in filenames:
cur_reports = self.ParseReportFile(f)
# Filter out the reports that were there in previous tests.
for r in cur_reports:
if r in self.known_errors:
pass # TODO: print out a hash once we add hashes to the reports.
else:
self.known_errors.add(r)
to_report.append(r)
common.PrintUsedSuppressionsList(self.used_suppressions)
if not to_report:
logging.info("PASS: No error reports found")
return 0
logging.error("Found %i error reports" % len(to_report))
for report in to_report:
if testcase:
logging.error("\n%s\nNote: observed on `%s`\n" %
(report, testcase))
else:
logging.error("\n%s\n" % report)
logging.error("Total: %i error reports" % len(to_report))
return -1
def main():
'''For testing only. The DrMemoryAnalyze class should be imported instead.'''
parser = optparse.OptionParser("usage: %prog [options] <files to analyze>")
parser.add_option("", "--source_dir",
help="path to top of source tree for this build"
"(used to normalize source paths in baseline)")
(options, args) = parser.parse_args()
if len(args) == 0:
parser.error("no filename specified")
filenames = args
return DrMemoryAnalyzer().Report(filenames, None, False)
if __name__ == '__main__':
sys.exit(main())
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