Patch from timurrrr: Re-factor valgrind scripts to add tsan support

First reviewed at http://codereview.chromium.org/125272
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/155528

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20870 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 85 insertions, 0 deletions

diff --git a/tools/valgrind/tsan_analyze.py b/tools/valgrind/tsan_analyze.py
new file mode 100644
index 0000000..13f3bc7
--- /dev/null
+++ b/tools/valgrind/tsan_analyze.py
@@ -0,0 +1,85 @@
+#!/usr/bin/python
+# Copyright (c) 2006-2008 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.
+
+# tsan_analyze.py
+
+''' Given a ThreadSanitizer output file, parses errors and uniques them.'''
+
+import logging
+import optparse
+import os
+import re
+import subprocess
+import sys
+import time
+
+class TsanAnalyze:
+  ''' Given a set of ThreadSanitizer output files, parse all the errors out of
+  them, unique them and output the results.'''
+
+  def __init__(self, source_dir, files):
+    '''Reads in a set of files.
+
+    Args:
+      source_dir: Path to top of source tree for this build
+      files: A list of filenames.
+    '''
+
+    self.races = []
+    for file in files:
+      self.races = self.races + self.GetReportFrom(file)
+
+  def GetReportFrom(self, filename):
+    ret = []
+    f = open(filename, 'r')
+    while True:
+      line = f.readline()
+      if (line == ''):
+        break
+      tmp = ""
+      while (re.match(".*INFO: T.* " +
+             "(has been created by T.* at this point|is program's main thread)"
+             ".*", line)):
+        tmp = tmp + line
+        while not re.match(".*}}}.*", line):
+          line = f.readline()
+          tmp = tmp + line
+        line = f.readline()
+
+      if (re.match(".*Possible data race.*", line)):
+        tmp = tmp + line
+        while not re.match(".*}}}.*", line):
+          line = f.readline()
+          tmp = tmp + line
+        ret.append(tmp.strip())
+    f.close()
+    return ret
+
+  def Report(self):
+    if len(self.races) > 0:
+      logging.error("Found %i race reports" % len(self.races))
+      for report in self.races:
+        logging.error("\n" + report)
+      return -1
+    logging.info("PASS: No race reports found")
+    return 0
+
+if __name__ == '__main__':
+  '''For testing only. The TsanAnalyze class should be imported instead.'''
+  retcode = 0
+  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 not len(args) >= 1:
+    parser.error("no filename specified")
+  filenames = args
+
+  analyzer = TsanAnalyze(options.source_dir, filenames)
+  retcode = analyzer.Report()
+
+  sys.exit(retcode)