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?

Distinguish between passive and active attacks, QUESTION (a) Distinguis...

QUESTION (a) Distinguish between passive and active attacks. (b) Give two reasons why it is important to organise security awareness programs for users. (c) Explain how s

What is structure, Problem 1 Write a recursive function to find sum of ...

Problem 1 Write a recursive function to find sum of even numbers from 2 to 50 Writing function and explanation Problem 2 What is structure? Explain how structu

Output devices, Output Devices Video Display Unit (VDU) or Mo...

Output Devices Video Display Unit (VDU) or Monitor Video Display Unit is similar to a television. It is used to display the results of processes. The screen is il

Microprocessor, 8088 timing system diagram

8088 timing system diagram

Search strategy-artificial intelligence, Search strategy-artificial intelli...

Search strategy-artificial intelligence: Soundness: You can hear in some application domains - i.e. automated theorem proving - that a search is "sound and complet

Hypertext transfer protocol (http), It's a common protocol or "language" co...

It's a common protocol or "language" computers use to "speak" to each other over the Web.

Concept of operating system, Concept of operating system: An operating...

Concept of operating system: An operating system is an essential software component of a computer system. The basic objectives of an operating system are to make the computer

Difference between an html and an xhtml page, QUESTION (a) Define four ...

QUESTION (a) Define four special target names use with the TARGET attribute (b) Explain the main difference between an HTML and an XHTML page (c) Give two merits and two

Explain different types of attacks, Question 1 Explain synchronous and asy...

Question 1 Explain synchronous and asynchronous Data Replication Question 2 Write a short note on Access Time, Latency, Transfer Time, and Streaming Tape Question 3

Excel, Your next step is to analyze "proposed" technical requirements/specs...

Your next step is to analyze "proposed" technical requirements/specs based on the business requirements (new performance needs) for Big Bucks. 1.Create a "CRUD" Matrix in an Exce

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