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

Project (network programming), Need help in network programming in C++ proj...

Need help in network programming in C++ project. How much you charge?

#title. sentinel controlled loop, #question.develop an algorithm using pseu...

#question.develop an algorithm using pseudocode for computing cos(x) and sin(x). use a sentinel controlled while loop. use the series definition of e^+-jx

Maths, .Write a program to find the area under the curve y = f(x) between x...

.Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b.

Determine the total resistance of the circuit, For the circuit shown in Fig...

For the circuit shown in Figure, verify (a) the battery voltage V , (b) the total resistance of the circuit, and (c) the values of resistance of resistors R 1 , R 2 and

Write a program of inline function, Here is a program that uses an inline f...

Here is a program that uses an inline function to compute and return the absolute value of its input argument. # include inline int abs(int x) {                  ret

C++ class, need to create c++ classes to store all pascal types in compiler...

need to create c++ classes to store all pascal types in compiler design.

Poop, hwat is the area fsdjlakl;aeklfjtealrtl;gka

hwat is the area fsdjlakl;aeklfjtealrtl;gka

Array, how to use nested loop of for in array

how to use nested loop of for in array

Bulk listing posting for a site like ebay, Project Description: I posted...

Project Description: I posted listings on a site that is like eBay but for video games. I post the similar listing many times daily, but need something that will let me post

Factoring methods, Square roots of a number

Square roots of a number

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