User Account

All Pages

read writers problem, C/C++ Programming

Assignment Help:
Readers Writers with Processes and Threads
Write two programs implementing ``reader pritority readers-writers synchronization'''' on files. One program will use processes, created with fork(), and synchronized with semaphores. The other program will use threads, created with pthread_create(), and synchronized with mutexes and conditions. In the following, the word "process" is used to describe either a process or thread, as appropriate.
Your program will create two readers and two writers. All four will access a common file, named ``SharedFile.'''' This file should contain a single number. The file should be created and given an initial value of 0 before the processes/threads are spawned.
The reader pseudocode:
repeat 20 times:
acquire read lock
read the number from SharedFile
release the read lock
print a message identifying the process, and the value read from SharedFile
sleep for a random period between 100 and 200 msec
The writer pseudocode:
repeat 20 times:
acquire write lock
read the number from SharedFile
increment it by a random value between 1 and 6
write the new value to SharedFile
release the write lock
print a message identifying the process, and the value written to SharedFile
sleep for a random period between 100 and 400 msec
Submit ONLY your C/C++ source code. Be sure to put your name and course in the comment header. The code must run on the "algebra and friends" machines. Use good programming style (comments, indentation, meaningful identifiers, etc.)

Related Discussions:- read writers problem

#Padovan string, #A Padovan string P(n) for a natural number n is defined a...

#A Padovan string P(n) for a natural number n is defined as: P(0) = ‘X’ P(1) = ‘Y’ P(2) = ‘Z’ P(n) = P(n-2) + P(n-3), n>2 where + denotes string concatenation. For a string of

Strings, A string S is said to be "Super ASCII", if it contains the charact...

A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the asci

Luminous Jewels - The Polishing Game, within 2 mins give me answer pllzzzzz...

within 2 mins give me answer pllzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Atm program, Ask quIn this assignment you will create an ATM Machine progra...

Ask quIn this assignment you will create an ATM Machine program (using C++) that allows a user to choose one of the following introduction menu items: 1) Create a bank account by

Explain the bit wise operators, Explain the Bit Wise Operators? C langu...

Explain the Bit Wise Operators? C language has distinction of supporting special operators recognized as bit wise operators for manipulation of data at bit level. These operato

Explain about the constants in c language, Explain about the Constants in c...

Explain about the Constants in c language? The Constants in C refer to fixed values that don't change during the execution of a program. C has four fundamental types of constan

Padovan string , .write a program that counts the number of occurrences of ...

.write a program that counts the number of occurrences of the string in the n-th padovan string p(n)   program in java // aakash , suraj , prem sasi kumar kamaraj college

Decode the code, solution

solution

Notion of encapsulation, The purpose of this assignment is to familiarize y...

The purpose of this assignment is to familiarize you with the notion of encapsulation as well as some aspects of IP and ICMP. Write your programs in C or C++. They will be grade

I need plugin for amibroker using c++, I need plugin for amibroker using c+...

I need plugin for amibroker using c++ Project Description: Need to prepare plugin for amibroker using c++. Should be system bound after installing. System should show based o

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd