Java Threads - Sleeping Barbers Problem - IT/Computer Science Assignment Help

Assignment Task :

Java Threads - Sleeping Barbers Problem

A small barbershop has two doors, an entrance, and an exit. Inside is a set of M barbers who spends all their lives serving customers, one at a time. Each barber has chair in which the customer sits when they are getting their hair cut. When there are no customers in the shop waiting for their hair to be cut, a barber sleeps in his chair. Customers arrive at random intervals, with mean mc and standard deviation sd. If a customer arrives and finds the barber asleep, he awakens the barber, sits in the barber’s chair and sleeps while his hair is being cut. The time taken to cut a customer's hair has a mean mh and standard deviation SDH. If a customer arrives and all the barbers are busy cutting hair, the customer goes asleep in one of the N waiting chairs. When the barber finishes cutting a customer’s hair, he awakens the customer and holds the exit door open for him. If there are any waiting customers, he awakens one and waits for the customer to sit in the barber's chair, otherwise, he goes to sleep.

Implement a multi-threaded, multi-core solution in Java. This solution should be efficient with respect to all actors. The solution should demonstrate the standard safety properties (mutual exclusion, absense of deadlock) and liveness properties (absense of starvation, fairness).

• The source code for the Java program.

• A Word file that includes:

  • A declaration that the submitted work (Java program and Word file) are solely the work of the student except for elements that are clearly identified, cited and attributed to other sources.

  • A description of the design of your program.

  • Justifications as to the correctness and fairness properties of your program.

  • A description of where a solution to the sleeping barber(s) problem is used in practice.

Marks will be awarded for:

• The design and implementation of your program, including efficiency.

• The justification of the safety and liveness properties.

• The description of where a solution to the sleeping barber(s) problem is used in practice.

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