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?

Php, Which of the following is NOT a type of SQL constraint?

Which of the following is NOT a type of SQL constraint?

Global positioning system, How does GPS work in the field of Sport or athle...

How does GPS work in the field of Sport or athletics?

Artificial intelligence research, Artificial Intelligence research: Art...

Artificial Intelligence research: Artificial Intelligence research may be describe  in terms of how the following question has been answered: "How are we going to get a comp

Computer science, You recently returned some homework I completed but i lef...

You recently returned some homework I completed but i left of the final 10 questions. Should not take long just needs some commands interpreted. How much will it cost for me to get

Determine whether the system is stable or causal, QUESTION (a) For each...

QUESTION (a) For each of the following systems, determine whether the system is (1) stable, (2) causal, (3) linear, (4) time invariant, (5) passive (i) Y[n] = x[-n] (ii)

Geometric mean - algorithm, The geometric mean is obtained by multiplying a...

The geometric mean is obtained by multiplying all the four numbers and taking the fourth root of the product. Let x 1 ,x 2 ,x 3  and x 4  be the given four numbers then geometric

Understanding human intelligence in social, Understanding human intelligenc...

Understanding human intelligence in social AI can be taken as just the current tool in the philosopher's toolbox for answering of questions for the behaviour of human intellig

Discuss about xpointer, Question 1 How PHP works? Explain the structure of...

Question 1 How PHP works? Explain the structure of PHP Question 2 Write a note on links and webs Question 3 Explain why do you need Document Type Definition (DTD)?

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