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

Notion of encapsulation, The purpose of this assignment is to familiarize y...

The purpose of this assignment is to familiarize you with the notion of encapsulation as well as some aspects of IP and ICMP. Write your programs in C or C++. They will be grade

Explain rules for constructing variable names in c language, Explain Rules ...

Explain Rules for constructing variable names? The Rules for constructing variable names : a) A variable name is any combination of alphabets, 0 to 9 digits and undersc

Data structure and algorithm, implement two stacks in one array A[1...n] in...

implement two stacks in one array A[1...n] in such a way that neither stack overflows unless the total number of elements in both stacks together is n. For this you need to produce

Compass bearing, write a c program that converts compass bearings into dire...

write a c program that converts compass bearings into direction

Write a program to find files-unix, This programming assignment is for use ...

This programming assignment is for use in the LINUX/UNIX environment!! Introduction: System administration often requires custom written programs and tools. One problem a s

C program for function of average, C program for function  of average ...

C program for function  of average int average(int); void main() {           int max=0,c=0;           clrscr();           printf("ENTER THE LIMIT OF INPUT FOR AV

Operations on strings, 1 Aims The main purpose of the assignment is to ...

1 Aims The main purpose of the assignment is to let you practice the following programming techniques: perform operations on pointers to basic and more complex types;

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

Functions, please help me get all the inbuilt functions in c++

please help me get all the inbuilt functions in c++

How can I fix this to, Write a program consisting of two functions (plus ma...

Write a program consisting of two functions (plus main). The first function should read in a number and then pass this back to main. This value should then be passed into a secon

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