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from SimPy.Simulation import *
class Wait_Or_Queue(Process):
def waitup(self,myEvent): # PEM illustrating "waitevent"
# wait for "myEvent" to occur
yield waitevent, self, myEvent
print 'At %s, some SimEvent(s) occurred that \
activated object %s.' %(now(), self.name)
print ' The activating event(s) were %s' \
%([x.name for x in self.eventsFired])
def queueup(self, myEvent): # PEM illustrating "queueevent"
# queue up for "myEvent" to occur
yield queueevent, self, myEvent
print 'At %s, some SimEvent(s) occurred that \
activated object %s.' %(now(), self.name)
print ' The activating event(s) were %s' \
%([x.name for x in self.eventsFired])
class Signaller(Process):
# here we just schedule some events to fire
def sendSignals(self):
yield hold, self, 2
event1.signal() # fire "event1" at time 2
yield hold, self, 8
event2.signal() # fire "event2" at time 10
yield hold, self, 5
event1.signal() # fire all four events at time 15
event2.signal()
event3.signal()
event4.signal()
yield hold, self, 5
event4.signal() # event4 recurs at time 20
initialize()
# Now create each SimEvent and give it a name
event1 = SimEvent('Event-1')
event2 = SimEvent('Event-2')
event3 = SimEvent('Event-3')
event4 = SimEvent('Event-4')
Event_list = [event3,event4] # define an event list
s = Signaller()
# Activate Signaller "s" *after* events created
activate (s,s.sendSignals())
w0 = Wait_Or_Queue('W-0')
# create object named "W-0", and set it to
# "waitup" for SimEvent "event1" to occur
activate (w0, w0.waitup(event1))
w1 = Wait_Or_Queue('W-1')
activate (w1, w1.waitup(event2))
w2 = Wait_Or_Queue('W-2')
activate(w2, w2.waitup(Event_list))
q1 = Wait_Or_Queue('Q-1')
# create object named "Q-1", and put it to be first
# in the queue for Event_list to occur
activate(q1, q1.queueup(Event_list))
q2 = Wait_Or_Queue('Q-2')
# create object named "Q-2", and append it to
# the queue for Event_list to occur
activate(q2, q2.queueup(Event_list))
simulate(until=50)
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