def run(self):
""" Begin the simulation and record the system variables during execution. """
# Initialise the beginning parameters of the simulation
servers = Servers(self.total_servers)
self.event_handler = M1M2EventHandler()
self.event_handler.start()
# Begin iteration of events, record arrivals for checking
self.count_arrival = 0
self.arrival = {"handover": 0, "new": 0}
while self.count_arrival < self.total_arrival:
# Collect next event from the event handler
current_event = self.event_handler.next()
# Update simulation time
self.sim_time = current_event.time()
if current_event.type == "arrival":
# Arrival event received
priority = current_event.path
self.count_arrival += 1
self.arrival[priority] += 1
# Create new arrival event
self.event_handler.add(
M1M2Event(priority, "arrival", current_event.time()))
# Check server available
if (len(servers) > self.threshold) or \
(priority == "handover" and servers.is_free()):
# Begin serving the client.
current_event.served_by(servers.allocate())
# All event handler to manage departure
self.event_handler.add(current_event)
continue
# No servers were available therefore the event is blocked
self.event_handler.block(
current_event) # Arriving client has been blocked
else:
# Departure event received
servers.deallocate(
current_event.served_by()) # Free the server
self.event_handler.depart(
current_event) # Event recorded as departed.
def run(self):
""" Begin the simulation of a MMCC system. Process the information until
termination criteria is meet.
"""
# Initialise the beginning parameters of the simulation
servers = Servers(self.total_servers) # Set up server handler
self.event_handler = EventHandler() # Set up the event handler
start_event = Event("arrival", 0) # Construct the first event object
start_event.departure_time -= start_event.arrival_time # Reset times
start_event.arrival_time = 0 # Reset times
self.event_handler.add(start_event) # Create the first event
# Begin iteration of events, record arrivals for checking
self.count_arrival = 0
while self.count_arrival < self.total_arrival:
# Collect next event from the event handler
current_event = self.event_handler.next()
# Update simulation time
self.sim_time = current_event.time()
if current_event.type == "arrival":
# Create new arrival event
self.event_handler.add(Event('arrival', current_event.time()))
# Record number of arrivals
self.count_arrival += 1
# Check if any server is available
if not servers.is_free():
self.event_handler.block(current_event)
continue
# Begin serving the client.
current_event.served_by(servers.allocate())
# All event handler to manage departure
self.event_handler.add(current_event)
else:
# Departure event received
servers.deallocate(current_event.served_by())
self.event_handler.depart(current_event)
