Add a tool to look for unused suppressions.

tools/valgrind/suppressions.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 # suppressions.py
 
 """Post-process Valgrind suppression matcher.
 
 Suppressions are defined as follows:
@@ skipping 11 matching lines @@
 }
 
 If ran from the command line, suppressions.py does a self-test
 of the Suppression class.
 """
 
 import os
 import re
 import sys
 
+import path_utils

[Timur Iskhodzhanov, 2012/12/03 11:14:13]

Traceback (most recent call last):
  File "../depot_tools/gcl.py", line 1466, in <module>
    sys.exit(main(sys.argv[1:]))
  File "../depot_tools/gcl.py", line 1444, in main
    return command(argv[1:])
  File "../depot_tools/gcl.py", line 766, in hook
    return function(change_info, args)
  File "../depot_tools/gcl.py", line 818, in CMDupload
    output = OptionallyDoPresubmitChecks(change_info, False, args)
  File "../depot_tools/gcl.py", line 735, in OptionallyDoPresubmitChecks
    return DoPresubmitChecks(change_info, committing, True)
  File "../depot_tools/gcl.py", line 1227, in DoPresubmitChecks
    rietveld_obj=change_info.RpcServer())
  File ".../chromium/depot_tools/presubmit_support.py", line 1107, in
DoPresubmitChecks
    results += executer.ExecPresubmitScript(presubmit_script, filename)
  File ".../chromium/depot_tools/presubmit_support.py", line 1024, in
ExecPresubmitScript
    result = eval(function_name + '(*__args)', context)
  File "<string>", line 1, in <module>
  File "<string>", line 27, in CheckChangeOnUpload
  File "<string>", line 20, in CheckChange
  File ".../chromium/src/tools/valgrind/tsan/../suppressions.py", line 32, in
<module>
    import path_utils
ImportError: No module named path_utils
Sending crash report ...
  args: ['../depot_tools/gcl.py', 'upload', 'glider', '--send_mail', '-r',
'glider@chromium.org']
  cwd: .../chromium/src/tools/valg
  exception: No module named path_utils
  host: ***.google.com
  stack:   File "../depot_tools/gcl.py", line 1466, in <mod
  user: timurrrr
  version: 2.6.5 (r265:79063, Oct  1 2012, 22:04:36) 
[GCC 4.
A stack trace has been sent to the maintainers.

+
+
 ELLIPSIS = '...'
 
 
+def GetSuppressions():
+  suppressions_root = path_utils.ScriptDir()
+  JOIN = os.path.join
+
+  result = {}
+
+  supp_filename = JOIN(suppressions_root, "memcheck", "suppressions.txt")
+  vg_common = ReadSuppressionsFromFile(supp_filename)
+  supp_filename = JOIN(suppressions_root, "tsan", "suppressions.txt")
+  tsan_common = ReadSuppressionsFromFile(supp_filename)
+  result['common_suppressions'] = vg_common + tsan_common
+
+  supp_filename = JOIN(suppressions_root, "memcheck", "suppressions_mac.txt")
+  vg_mac = ReadSuppressionsFromFile(supp_filename)
+  supp_filename = JOIN(suppressions_root, "tsan", "suppressions_mac.txt")
+  tsan_mac = ReadSuppressionsFromFile(supp_filename)
+  result['mac_suppressions'] = vg_mac + tsan_mac
+
+  supp_filename = JOIN(suppressions_root, "tsan", "suppressions_win32.txt")
+  tsan_win = ReadSuppressionsFromFile(supp_filename)
+  result['win_suppressions'] = tsan_win
+
+  supp_filename = JOIN(suppressions_root, "..", "heapcheck", "suppressions.txt")
+  result['heapcheck_suppressions'] = ReadSuppressionsFromFile(supp_filename)
+
+  supp_filename = JOIN(suppressions_root, "drmemory", "suppressions.txt")
+  result['drmem_suppressions'] = ReadSuppressionsFromFile(supp_filename)
+  supp_filename = JOIN(suppressions_root, "drmemory", "suppressions_full.txt")
+  result['drmem_full_suppressions'] = ReadSuppressionsFromFile(supp_filename)
+
+  return result
+
+
 def GlobToRegex(glob_pattern, ignore_case=False):
   """Translate glob wildcards (*?) into regex syntax.  Escape the rest."""
   regex = ''
   for char in glob_pattern:
     if char == '*':
       regex += '.*'
     elif char == '?':
       regex += '.'
     elif ignore_case and char.isalpha():
       regex += '[%s%s]' % (char.lower(), char.upper())
@@ skipping 916 matching lines @@
               "instruction=test 0x08(%eax) $0x01\n"
               "ntdll.dll!*\n"
               "*!foo\n")
   assert str(supp) == supp_str, (
       "str(supp) != supp_str:\nleft: %s\nright: %s" % (str(supp), supp_str))
 
 
 if __name__ == '__main__':
   SelfTest()
   print 'PASS'