what is Semaphore and explain with example?, Basic Computer Science

what is Semaphore and explain with example?, Basic Computer Science

Assignment Help:

Description
A semaphore is a confined variable whose value can be accessed and changed only by the operations P and V and initialization operation known as ''Semaphoiinitislize''.
• Binary Semaphores can take for granted only the value 0 or the value 1 counting semaphores also described general semaphores can suppose only nonnegative values.

• The P (or wait or sleep or down) operation on semaphores S, assumed as P(S) or wait (S), controls as follows:
• P(S):

IF S > 0
THEN S := S - 1
ELSE (wait on S)

The V (or signal or wakeup or up) process on semaphore S, written as V(S) or signal (S), controls as follows:
V(S): IF (one or additional process are waiting on S)
THEN (let one of these processes proceed)
ELSE S := S +1

Related Discussions:- what is Semaphore and explain with example?

Define virtualization, Question 1 Define virtualization. Discuss the benef...

Question 1 Define virtualization. Discuss the benefits of virtualization. Discuss the benefits of server virtualization Question 2 What is para virtualization? How para vi

Memory access, Memory access: The use of semi-conductor memory elements...

Memory access: The use of semi-conductor memory elements (bistables) has been made possible by the use of large scale integrated circuits (LSI) which provide reliability, ease

Elements of programming language, ELEMENTS OF PROGRAMMING LANGUAGE: L...

ELEMENTS OF PROGRAMMING LANGUAGE: Learning a programming language requires understanding of concepts such as representation of different types of data in the computer, the va

Java programming, Write a program that lets the user play the game Rock, Pa...

Write a program that lets the user play the game Rock, Paper, Scissors against the computer. The program should work as follows: ? When the program begins, the results of the prev

Introduction to computer, Computer: People call a lot of things, compu...

Computer: People call a lot of things, computers. Some of them are cheap, but can only process numerical information. Such devices would better be described as 'calculators' r

Software, Software Computer cannot be used without a software in...

Software Computer cannot be used without a software in it. It is the software which gives instructions to the hardware of the computer so as to work all devices in tande

What is packet switching? explain, Question 1 What are the five subscriber...

Question 1 What are the five subscriber-related signaling functions performed by the operator? Question 2 Compare Microprogrammed control and Hard-wired control Que

System administration and linux/unix, Write a system using script written i...

Write a system using script written in asuitable scripting language to automate taking a basic linux server instance and provisioning it with particular applications based on its I

Java, function of void

function of void

Explain the basic structure of a c program, Question 1 Explain the basic...

Question 1 Explain the basic structure of a C program with an example 2 What would be the value of x after execution of the following statements? 3.What are the commonly u

Write Your Message!

Name

Email id

Message

Verfication Code

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

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