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

C program to print r diagonal triangle, C program to print R diagonal trian...

C program to print R diagonal triangle: #define rows 3 #define cols 3 void main() {                 int i=0,j=0;                 int arr[rows][cols];

Coding, dispaly the last ant on rod

dispaly the last ant on rod

Compiler related, Please give me a programming code of first & follow wit...

Please give me a programming code of first & follow with c or c++ laqnguage .When anyone give me the programming code of first & follow please explain every lines with the help

Decode the code, give the coding in c++

give the coding in c++

Insertion sort - c program, Insertion sort - C program: Write a progra...

Insertion sort - C program: Write a program in c to define a insertion sort. void main()  {   clrscr();   int a[100],ch,n;   cout   cin>>n;   for (int i=0

Should you employ this pointer in the constructor?, Should you employ this ...

Should you employ this pointer in the constructor?

What is a conversion constructor c++, A constructor that accepts one argume...

A constructor that accepts one argument of a dissimilar type.

Explain control flow, Control Flow The control flow statements are used...

Control Flow The control flow statements are used when it is needed that the flow of the program is to be changed after taking some decision. This control flow statement theref

Insert values in queue - c++ program, Insert values in queue - C++ program:...

Insert values in queue - C++ program: Write a program to insert values in queue. int main()   {         int k;     Queue timeLine;     cout     for(

Describe faster ++i or i++, A: The answer to this lies actually, how they u...

A: The answer to this lies actually, how they used. Along ++i(PreIncrement) the variable is incremented and new value is returned. Thus it needs one instruction to increment the va

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