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# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# The Software is provided "AS IS", without warranty of any kind,
# express or implied, including but not limited to the warranties of
# merchantability, fitness for a particular purpose and
# noninfringement. In no event shall the authors or copyright holders
# be liable for any claim, damages or other liability, whether in an
# action of contract, tort or otherwise, arising from, out of or in
# connection with the Software or the use or other dealings in the
# Software.
#
# Copyright (C) 2002 John Hoffman
# 2006-2010 Participatory Culture Foundation
from time import time, clock
import sys
import threading
_MAXFORWARD = 100
_FUDGE = 1
class RelativeTime:
def __init__(self):
self.time = time()
self.offset = 0
self.lock = threading.Lock()
def get_time(self):
self.lock.acquire()
try:
t = time() + self.offset
if t < self.time or t > self.time + _MAXFORWARD:
# print "FUDGE"
# print "t: %s" % t
# print "self.time: %s" % self.time
# print "self.offset: %s" % self.offset
self.time += _FUDGE
self.offset += self.time - t
return self.time
self.time = t
finally:
self.lock.release()
return t
if sys.platform != 'win32':
_RTIME = RelativeTime()
def clock():
return _RTIME.get_time()
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