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

Opp, what is oops

what is oops

Data structure, convert BST into sorted doubly linked list

convert BST into sorted doubly linked list

Program to display appropriate message-clients accounts, Question A ban...

Question A bank normally updates it's clients accounts at the end of each month.Of the two types of bank accounts:savings and checking, a client must maintain a minimum balance

Program for metric conversions, Write a program called Converter that does ...

Write a program called Converter that does three types of metric conversions. Your program should prompt the user for the selection conversion, prompt for input data, and display t

Android - iphone mobile game, I am seeking a developer to create a mobile g...

I am seeking a developer to create a mobile game for me. I want an endless runner game with simple controls. The game needs to be a 3D game in a 2D view. The graphics and animation

Computes the area of a circle of radius r, (a) Write a procedure called (ar...

(a) Write a procedure called (area-of-rectangle h w) that computes the area of a rectangle of height h and width w. (b) Write a procedure called (area-of-circle r) that computes

C program for function of find the factorial , C Program for FUNCTION OF FI...

C Program for FUNCTION OF FIND THE FACTORIAL float factorial(float); void main() {           float i=0,c=0;           clrscr();           printf("ENTER THE DIGI

Data structyres, What data structure would you mostly likely see in a nonre...

What data structure would you mostly likely see in a nonrecursive implementation of a recursive algorithm?Minimum 100 words accepted#

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

Write Your Message!

Captcha
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!

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