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| 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 | |
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