61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
from pypdevs.DEVS import AtomicDEVS, CoupledDEVS
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from pypdevs.simulator import Simulator
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class Root(CoupledDEVS):
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def __init__(self):
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CoupledDEVS.__init__(self, "Root")
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self.models = []
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# First model
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self.models.append(self.addSubModel(Generator()))
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# Second model
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self.models.append(self.addSubModel(Consumer(0)))
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# And connect them
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self.connectPorts(self.models[0].outport, self.models[1].inport)
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def modelTransition(self, state):
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# We are notified, so are required to add a new model and link it
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self.models.append(self.addSubModel(Consumer(1)))
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self.connectPorts(self.models[0].outport, self.models[-1].inport)
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## Optionally, we could also remove the Consumer(0) instance as follows:
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# self.removeSubModel(self.models[1])
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# Always returns False, as this is top-level
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return False
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class Generator(AtomicDEVS):
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def __init__(self):
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AtomicDEVS.__init__(self, "Generator")
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# Keep a counter of how many events were sent
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self.outport = self.addOutPort("outport")
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self.state = 0
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def intTransition(self):
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# Increment counter
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return self.state + 1
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def outputFnc(self):
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# Send the amount of messages sent on the output port
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return {self.outport: [self.state]}
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def timeAdvance(self):
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# Fixed 1.0
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return 1.0
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def modelTransition(self, state):
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# Notify parent of structural change if state equals 3
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return self.state == 3
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class Consumer(AtomicDEVS):
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def __init__(self, count):
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AtomicDEVS.__init__(self, "Consumer_%i" % count)
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self.inport = self.addInPort("inport")
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def extTransition(self, inputs):
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for inp in inputs[self.inport]:
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print("Got input %i on model %s" % (inp, self.name))
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sim = Simulator(Root())
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sim.setTerminationTime(5)
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sim.setDSDEVS(True)
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sim.simulate()
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