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- /*
- * Copyright (C) 1993
- *
- * Department of Computing Science,
- * The University,
- * Newcastle upon Tyne,
- * UK.
- */
-
- This director contains an example of a simulation written using the simulation
- package. The example is taken from the book by Isi Mitrani (Simulation
- Techniques for Discrete Event Systems p22).
-
- The simulation is of a service which attempts to execute as many requests for
- jobs as possible. The job requests are queued until the service can deal with
- them. However, the service is prone to failures, and so jobs started will be
- delayed until the service has been reactivated.
-
- The classes provided include:
-
- Arrivals - This class controls the rate at which Jobs arrive at
- the service (Machine)
-
- Breaks - This class controls the availability of the Machine by
- "killing" it and restarting it at intervals drawn from
- a Uniform distribution.
-
- Job - This class represents the jobs which the Machine must process.
-
- Machine - This is the Machine on which the service resides. It obtains
- jobs from the job queue for the service and then attempts to
- execute them. The machine can fail and so the response time for
- jobs is not guaranteed to be the same.
-
- MachineShop - This is the main part of the simulation which starts the
- various processes (Scheduler, Arrivals, Machine, Job)
- involved. It also prints out statistics for the response time
- for the jobs.
-
- Queue - This represents the queue which Jobs are placed on prior to being
- used by the Machine (service).
-
- Main - This is the body of the program which initializes the threads package
- prior to the simulation starting.
-