Added call to stop goma in case it's still running from a build that timed out. Added --verbose par…

tools/run-bisect-perf-regression.py

 #!/usr/bin/env python
 # Copyright (c) 2013 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.
 
 """Run Performance Test Bisect Tool
 
 This script is used by a trybot to run the src/tools/bisect-perf-regression.py
 script with the parameters specified in run-bisect-perf-regression.cfg. It will
 check out a copy of the depot in a subdirectory 'bisect' of the working
@@ skipping 73 matching lines @@
     if os.name == 'nt':
       os.environ['CC'] = os.path.join(path_to_goma, 'gomacc.exe') + ' cl.exe'
       os.environ['CXX'] = os.path.join(path_to_goma, 'gomacc.exe') + ' cl.exe'
       goma_file = os.path.join(path_to_goma, 'goma_ctl.bat')
     else:
       os.environ['PATH'] = os.pathsep.join([path_to_goma, os.environ['PATH']])
       goma_file = os.path.join(path_to_goma, 'goma_ctl.sh')
 
     cmd.append('--use_goma')
 
+    # Sometimes goma is lingering around if something went bad on a previous
+    # run. Stop it before starting a new process. Can ignore the return code
+    # since it will return an error if it wasn't running.
+    subprocess.call([goma_file, 'stop'])
+
     return_code = subprocess.call([goma_file, 'start'])
     if return_code:
       print 'Error: goma failed to start.'
       print
       return return_code
 
   cmd = [str(c) for c in cmd]
 
   return_code = subprocess.call(cmd)
 
@@ skipping 39 matching lines @@
     print 'Error: Could not load config file.'
     print
     return 1
 
   return RunBisectionScript(config, opts.working_directory, path_to_file,
                             opts.path_to_goma)
 
 
 if __name__ == '__main__':
   sys.exit(main())