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

What is the significance of external declaration, Problem 1 What is the...

Problem 1 What is the difference between function declaration and function definition? 2 Write a recursive function to find sum of even numbers from 2 to 10. 3 List some

What is object variable, The definition of an object(variable ): We can...

The definition of an object(variable ): We can explain a variable(set memory to the variable) in the following ways. e.g. double salary; int month; When more than o

Program of conversion from basic to user-defined variable, Conversion from ...

Conversion from Basic to User-Defined variable Consider the following example. class Distance                  {                   public  :

Decoding, Smugglers are becoming very smart day by day. Now they have devel...

Smugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new technology, they are send

Developing programs in the c++ programming language., I. COURSE DESCRIPTION...

I. COURSE DESCRIPTION Develops a working knowledge of object-oriented concepts in areas of classes, inheritance, data structures, error handling, templates and file processing.

But operator overloading makes class look ugly; isn''t it , Q: But operator...

Q: But operator overloading makes class look ugly; isn't it assumed to make my code clearer? A: Operator overloading makes life simpler for the users of a class, not for develop

Print the sorted output on the console, Question 1 Describe the theory beh...

Question 1 Describe the theory behind class templates and function templates along with relevant programming examples Question 2 With the help of suitable programming example

Arrays, uses

uses

Proramming, Force, F = ma

Force, F = ma

Three sides, area

area

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