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

Jewel polishing, Byteland county is very famous for luminous jewels. Lumino...

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

Write a program to define a matrix, Write a program to define a matrix: ...

Write a program to define a matrix: 1. Write a function that takes an integer and calculates and returns the factorial of the integer. The Factorial of a number "n" is compute

Explain different access specifiers in a class, Question 1 Create a class ...

Question 1 Create a class String which stores a string value. Overload ++ operator which converts the characters of the string to uppercase (toupper() library function of "ctype.h

Credit Card Validation Check digit, Use 16 digit credit card numbers that c...

Use 16 digit credit card numbers that contain 15 digits an 1 check digit. The format of the card number consists of the 15 digits followed by the check digit. The check digit is co

Prepare a script for providing instagram followers, Prepare a script for pr...

Prepare a script for providing Instagram Followers/Likes I need to prepare a panel where my customer able to get Instagram followers or likes automatically. - A panel where I

C program to compute the factorial, Write a C program to compute the factor...

Write a C program to compute the factorial of  5 i.e 1x2x3x4x5 etc #include stdio.h   void main()   {   char promt;      int factor;   factor = 1*2*3*4*5;   printf("The fac

Find area under curve, write a c program to find the area under the curve4...

write a c program to find the area under the curve4 f=(x) between x=a and x=l integrate y=(x) between the limits of a and b Solution: #include float    start_point,

Develop capturing printer output apps using raspberry, In POS system, cashi...

In POS system, cashier computer connect to printer using serial rs232 usb or cable. We need to capture data from that connection, and parsing the data to get total amount for every

Reading from a Hash table in C, I''m having trouble with my C code to red f...

I''m having trouble with my C code to red from a Hash table. Not sure what it is I''m doing wrong and stumped. I need to get it figured out by tomorrow at 4:00 p.m. Eastern time. C

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