Print out how long presubmit checks took if it's more than 1 second.

presubmit_support.py

 #!/usr/bin/python
 # Copyright (c) 2006-2009 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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.3.2'
 
 # TODO(joi) Add caching where appropriate/needed. The API is designed to allow
 # caching (between all different invocations of presubmit scripts for a given
 # change). We should add it as our presubmit scripts start feeling slow.
 
 import cPickle  # Exposed through the API.
 import cStringIO  # Exposed through the API.
 import exceptions
 import fnmatch
 import glob
 import logging
 import marshal  # Exposed through the API.
 import optparse
 import os  # Somewhat exposed through the API.
 import pickle  # Exposed through the API.
 import random
 import re  # Exposed through the API.
 import subprocess  # Exposed through the API.
 import sys  # Parts exposed through API.
 import tempfile  # Exposed through the API.
+import time
 import traceback  # Exposed through the API.
 import types
 import unittest  # Exposed through the API.
 import urllib2  # Exposed through the API.
 import warnings
 
 # Local imports.
 # TODO(joi) Would be cleaner to factor out utils in gcl to separate module, but
 # for now it would only be a couple of functions so hardly worth it.
 import gcl
@@ skipping 764 matching lines @@
     default_presubmit: A default presubmit script to execute in any case.
     may_prompt: Enable (y/n) questions on warning or error.
 
   Warning:
     If may_prompt is true, output_stream SHOULD be sys.stdout and input_stream
     SHOULD be sys.stdin.
 
   Return:
     True if execution can continue, False if not.
   """
+  start_time = time.time()
   presubmit_files = ListRelevantPresubmitFiles(change.AbsoluteLocalPaths(True),
                                                change.RepositoryRoot())
   if not presubmit_files and verbose:
     output_stream.write("Warning, no presubmit.py found.\n")
   results = []
   executer = PresubmitExecuter(change, committing)
   if default_presubmit:
     if verbose:
       output_stream.write("Running default presubmit script.\n")
     fake_path = os.path.join(change.RepositoryRoot(), 'PRESUBMIT.py')
@@ skipping 28 matching lines @@
                             may_prompt=False):
           error_count += 1
         output_stream.write('\n')
   if not errors and warnings and may_prompt:
     output_stream.write(
       'There were presubmit warnings. Sure you want to continue? (y/N): ')
     response = input_stream.readline()
     if response.strip().lower() != 'y':
       error_count += 1
 
+  total_time = time.time() - start_time
+  if total_time > 1.0:
+    print "Presubmit checks took %.1fs to calculate." % total_time
   global _ASKED_FOR_FEEDBACK
   # Ask for feedback one time out of 5.
   if (len(results) and random.randint(0, 4) == 0 and not _ASKED_FOR_FEEDBACK):
     output_stream.write("Was the presubmit check useful? Please send feedback "
                         "& hate mail to maruel@chromium.org!\n")
     _ASKED_FOR_FEEDBACK = True
   return (error_count == 0)
 
 
 def ScanSubDirs(mask, recursive):
@@ skipping 71 matching lines @@
                                options.commit,
                                options.verbose,
                                sys.stdout,
                                sys.stdin,
                                options.default_presubmit,
                                options.may_prompt)
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))