| # 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. | |
| import logging | |
| import time | |
| class TimeProfile(object): | |
| """Class for simple profiling of action, with logging of cost.""" | |
| def __init__(self, description): | |
| self._starttime = None | |
| self._description = description | |
| self.Start() | |
| def Start(self): | |
| self._starttime = time.time() | |
| def Stop(self): | |
| """Stop profiling and dump a log.""" | |
| if self._starttime: | |
| stoptime = time.time() | |
| logging.info('%fsec to perform %s', | |
| stoptime - self._starttime, self._description) | |
| self._starttime = None |