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46 lines
1.1 KiB
Python
46 lines
1.1 KiB
Python
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import logging
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import time
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class TimeProfile(object):
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"""Class for simple profiling of action, with logging of cost."""
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def __init__(self, description='operation'):
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self._starttime = None
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self._endtime = None
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self._description = description
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self.Start()
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def Start(self):
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self._starttime = time.time()
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self._endtime = None
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def GetDelta(self):
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"""Returns the rounded delta.
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Also stops the timer if Stop() has not already been called.
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"""
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if self._endtime is None:
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self.Stop(log=False)
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delta = self._endtime - self._starttime
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delta = round(delta, 2) if delta < 10 else round(delta, 1)
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return delta
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def LogResult(self):
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"""Logs the result."""
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logging.info('%s seconds to perform %s', self.GetDelta(), self._description)
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def Stop(self, log=True):
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"""Stop profiling.
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Args:
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log: Log the delta (defaults to true).
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"""
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self._endtime = time.time()
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if log:
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self.LogResult()
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