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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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