--%>
Assignment Help - homework help

Networking, Distributed and Concurrent Programming

Homework Assignment : A Barbershop Problem Due: November 20, 2012 In this assignment, you are asked to write a multithreading problem to simulate the barbershop problem, which is a classical synchronization problem. The problem is taken from William Stallings's Operating Systems: Internals and Design Principles, 3rd Edition, 1998. Barber problem: Orchestrating activities in a barbershop 1. 3 chairs, 3 barbers, 1 cash register, waiting area includes 4 customers on a sofa, plus additional standing room for 7 customers. 2. A customer : • Will not enter the shop if it is filled to capacity • Takes a seat on the sofa, or stands if sofa is filled • When a barber is free, the customer waiting longest on sofa is served, the customer standing longest takes up seat on the sofa • When a customer's haircut is finished, any barber can accepted payment but because of the single cash register, only one payment is accepted at a time • Barbers divide their time between cutting hair, accepting payment and sleeping Assume the arrival rate of customers is 1 customer/3 minutes, the haircut speed of three barbers are the same 5 minutes. Initially, all three barbers are sleeping, and there is no guest in the barbershop. The output of your program is the snapshot of the barbershop at a given time (an input parameter of the program), including how many customers in the barbershop, how many are seated, how many are on the barber chairs, current status of three barbers, current status of cashier, and how many customers are dropped. Hints: • You can start from the code included in the slides, and try to solve the remaining problems (slides) step by step. • The interval of your simulation step should not larger than 1 minute. Extra credits: You can get 0.5 extra credit if you can handle the poisson arrival of customers. You can get 0.5 extra if you can handle varied hair cutting speed.

   Related Questions in Programming Languages

  • Q : Acknowledge inside a transaction Normal

    Normal 0 false false

  • Q : Define the term Static type Define the

    Define the term Static type: It is the static type of an object is the declared type of the variable employed to refer to it.

    		•
  • Q : Define Class Class : It is a

    Class: It is a programming language concept which permits data and techniques to be grouped altogether. The class concept is basic to the notion of an object-oriented programming language. Methods of a class define the set of permitte

    		•
  • Q : Define Propagation Propagation : When

    Propagation: When an exception is thrown in a method, and there is no suitable exception handler within the method, the exception might be propagated to the caller of the method. For a checked exception, the method should include a throws clause in it

    		•
  • Q : Explain the good illustrations of

    Explain the good illustrations of closing XHTML elements.

    		•
  • Q : Simulation of artifacts in CT using

    How is Simulation of artifacts in CT is done utilizing MATLAB?

    		•
  • Q : State the term VHDL or Verilog State

    State the term VHDL or Verilog? Answer: VHDL is extremely high speep integrated chips hardware descripted language as well as verilog is use to verify logic.

    		•
  • Q : Explain features of XSLT programmer Do

    Do you feel that you are a good Extensible Style Sheet Language Transformations programmer?

    		•
  • Q : Compute the Total Shopper Spending in

    Most of the reports produced from the system compute the total dollars in purchases for a shopper. Process the following steps to build a function named TOT_PURCH_SF which accepts a shopper id as input and returns the total dollars which the shopper has spent with com

    		•
  • Q : What is BLAST in program model checking

    What is BLAST in program model checking: The abbreviation is Berkeley Lazy Abstraction Software Verification Tool (BLAST) is a software model checker for C programs. The main goal of BLAST (BLAST website) is to be able to check that software satisfies

    		•