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

Write in a file - c program, Write in a file: void main() { int ...

Write in a file: void main() { int i,j,k,l,list[1000]; FILE *fp; char any[8];   cout cin >> any;   fp = fopen(any,"wb");     for(j=0;j     {

#padovan string in c , #padovan string in java   program in java /...

#padovan string in java   program in java // aakash , suraj , prem sasi kumar kamaraj college program 1 : package test.padovanstring; public class PadovanStrin

Luminous Jewels - The Polishing Game, Byteland county is very famous for lu...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

#program, Ask question #Minimum 100 words accepted program for polishin...

Ask question #Minimum 100 words accepted program for polishing jewels#

Define and explain flow chart with an example, C Programming and Data Struc...

C Programming and Data Structures 1. Define and explain flow chart with an example. 2. Write an algorithm to print all even numbers in descending order and draw the flowcha

Bankers algorithm, creating a system having five process from p0 to p4 and ...

creating a system having five process from p0 to p4 and five resource types. create the need matrix use the safe algorithm to test if the system is in safe mode.

KRPano, I am seeking an expert to create a 360 degree virtual tour in KRPan...

I am seeking an expert to create a 360 degree virtual tour in KRPano for use on PCs, tablets and smartphones. You will be given with panoramas in order to create an advanced KRPano

Academic expert for genetic algorithm, Academic expert for Genetic Algorith...

Academic expert for Genetic Algorithm Project Description: Seeking academic expert for Genetic Algorithm. Skills required are Academic Writing, Algorithm, C++ Programming,

Using only arrays, write c program to do the following : -fill 2 dimensiona...

write c program to do the following : -fill 2 dimensional array (square matrix array with size=4). -ask the user to enter any integer number and add this number to the diagonals -o

2, how to do 2, 4, 8 associativity

how to do 2, 4, 8 associativity

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