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?

Function, write a function named "location_of_largest"that takes as its arg...

write a function named "location_of_largest"that takes as its arguments the following:(1) an array of integer values

Comp 100, I have an account in my www.itlab.com and i have a test and it s...

I have an account in my www.itlab.com and i have a test and it should do tonight, so do you have any one to help me and do this test and it is about excel

Explain the term "algorithmic delay", QUESTION a) What is Time Division...

QUESTION a) What is Time Division Multiplexing (TDM), illustrate your answer with a diagram b) Describe four types of RTCP messages c) i) What is silence compression in I

Application programming, Do you offer application programming? Please sugge...

Do you offer application programming? Please suggest?

Explain distributed file systems, Question 1 Write short note on ...

Question 1 Write short note on 1) NFS 2) CIFS Question 2 What is Virtual Application? Write down the benefits and drawbacks of it Questi

Subroutine and functions, Subroutine and Functions: In a program, it ...

Subroutine and Functions: In a program, it is often necessary to repeat a statement or group of statements at several points to accomplish a particular task. Repeating the sa

Desk top publishing program, Desk Top Publishing Program: Desktop publ...

Desk Top Publishing Program: Desktop publishing programs contain many of the features of word processing software, but .go even further in the ability to layout the format of

COMputer fundamentals, explain the expression "A=5"

explain the expression "A=5"

Memory hierarchy, Memory hierarchy: There is another type of high spee...

Memory hierarchy: There is another type of high speed memory, known as Cache memory, which is used to increase the speed of processing by making current programs and data avai

Hardware, Hardware Hardware includes the cable and a Hub/Switch that...

Hardware Hardware includes the cable and a Hub/Switch that will connect the participating computers together. Printers or any other peripherals connected to one computer can

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