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# Written by Bram Cohen
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# see LICENSE.txt for license information
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from clock import clock
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class Measure:
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def __init__(self, max_rate_period, fudge = 1):
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self.max_rate_period = max_rate_period
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self.ratesince = clock() - fudge
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self.last = self.ratesince
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self.rate = 0.0
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self.total = 0l
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def update_rate(self, amount):
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self.total += amount
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t = clock()
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self.rate = (self.rate * (self.last - self.ratesince) +
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amount) / (t - self.ratesince + 0.0001)
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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 = clock() - 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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