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from SimPy.Simulation import (Process, SimEvent, Store, activate, get,
initialize, hold, now, put, simulate, waitevent)
"""Carwash is master"""
class Carwash(Process):
"""Carwash is master"""
def __init__(self, name):
Process.__init__(self, name=name)
def lifecycle(self):
while True:
yield get, self, waitingCars, 1
carBeingWashed = self.got[0]
yield hold, self, washtime
carBeingWashed.doneSignal.signal(self.name)
class Car(Process):
"""Car is slave"""
def __init__(self, name):
Process.__init__(self, name=name)
self.doneSignal = SimEvent()
def lifecycle(self):
yield put, self, waitingCars, [self]
yield waitevent, self, self.doneSignal
whichWash = self.doneSignal.signalparam
print('%s car %s done by %s' % (now(), self.name, whichWash))
class CarGenerator(Process):
def generate(self):
i = 0
while True:
yield hold, self, 2
c = Car('%d' % i)
activate(c, c.lifecycle())
i += 1
washtime = 5
initialize()
# put four cars into the queue of waiting cars
for j in range(1, 5):
c = Car(name='%d' % -j)
activate(c, c.lifecycle())
waitingCars = Store(capacity=40)
for i in range(2):
cw = Carwash('Carwash %s' % i)
activate(cw, cw.lifecycle())
cg = CarGenerator()
activate(cg, cg.generate())
simulate(until=30)
print('waitingCars %s' % [x.name for x in waitingCars.theBuffer])
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