class OutputStream(Process):
def __init__(self, name, bitrate, sim):
Process.__init__(self, name)
self.requester = RRequester("Read Requester of %s"%name, sim.params)
self.bitrate = bitrate
self.rambus = sim.params.rambus
self.errors = sim.errors
def drainBuffer(self, avgPktSize=0):
# Activate BufferControl's process in 100 ms
activate(self.requester, self.requester.watchBuffer(), now()+100)
# If the average packet size is not redefined, define as bitrate
if avgPktSize <= 0:
avgPktSize = self.bitrate/10.0
# Continuously drain corresponding buffer with kBs based on the
# given average bitrate.
while True:
sizemb = expovariate(1.0/avgPktSize)
sizekB = sizemb*128 #Mb -> KB
if self.requester.buffer.amount < sizekB:
self.errors.append("<font color=red>%s Buffer Underflow at %.3f</font>"%(self.name, now()))
continue
yield get, self, self.requester.buffer, sizekB
yield request, self, self.rambus
yield hold, self, self.rambus.processTime(sizekB)
yield release, self, self.rambus
#print "Just removed %f kBs from %s at %i"%(sizekB,self.name,now())
yield hold, self, (1000*sizemb/self.bitrate) # 1000 ms in one s
def __init__(self, name, bitrate, sim):
Process.__init__(self, name)
self.requester = RRequester("Read Requester of %s"%name, sim.params)
self.bitrate = bitrate
self.rambus = sim.params.rambus
self.errors = sim.errors
