def __init__(self, size = 0, tau = 5):
"""the clock_arm is for the traversing the circular list, the -1
is for convenience. Lists can be accessed with -1.
tau is the parameter for replacing pages.
virtual_clock determines the page values and how old they are."""
Physical_Memory.__init__(self, size)
self.clock_arm = -1
self.tau = tau
self.virtual_clock = 0
def __init__(self, size = 0):
Physical_Memory.__init__(self, size)
self.pages_left = []
