1 # Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging 6 import time 7 8 9 class TimeProfile(object): 10 """Class for simple profiling of action, with logging of cost.""" 11 12 def __init__(self, description): 13 self._starttime = None 14 self._description = description 15 self.Start() 16 17 def Start(self): 18 self._starttime = time.time() 19 20 def Stop(self): 21 """Stop profiling and dump a log.""" 22 if self._starttime: 23 stoptime = time.time() 24 logging.info('%fsec to perform %s', 25 stoptime - self._starttime, self._description) 26 self._starttime = None 27
