49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
# The contents of this file are subject to the BitTorrent Open Source License
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# Version 1.1 (the License). You may not copy or use this file, in either
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# source code or executable form, except in compliance with the License. You
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# may obtain a copy of the License at http://www.bittorrent.com/license/.
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#
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# Software distributed under the License is distributed on an AS IS basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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# Written by Bram Cohen
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from BitTorrent.platform import bttime
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class Measure(object):
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def __init__(self, max_rate_period, fudge=5):
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self.max_rate_period = max_rate_period
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self.ratesince = bttime() - fudge
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self.last = self.ratesince
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self.rate = 0.0
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self.total = 0
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def update_rate(self, amount):
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self.total += amount
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t = bttime()
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self.rate = (self.rate * (self.last - self.ratesince) +
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amount) / (t - self.ratesince)
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self.last = t
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if self.ratesince < t - self.max_rate_period:
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self.ratesince = t - self.max_rate_period
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def get_rate(self):
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self.update_rate(0)
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return self.rate
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def get_rate_noupdate(self):
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return self.rate
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def time_until_rate(self, newrate):
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if self.rate <= newrate:
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return 0
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t = bttime() - self.ratesince
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return ((self.rate * t) / newrate) - t
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def get_total(self):
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return self.total
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