Explain busy waiting semaphores, Computer Engineering

Assignment Help:

Explain busy waiting semaphores.

Weak, Busy-wait Semaphores:

  • The simplest method to implement semaphores.
  • Useful while critical sections last for a short time, or we have many CPUs.
  • S initialized to positive value to permit someone in at the beginning.
  • S is an integer variable which, apart from initialization, can simply be accessed through 2 atomic and equally exclusive operations:

wait(s):
while (s.value != 0);
s.value--;
signal(s):
s.value++;
All occurs atomically that is, wrap pre protocols and wrap post protocols.


Related Discussions:- Explain busy waiting semaphores

Explain about indirect addressing, Q. Explain about Indirect Addressing? ...

Q. Explain about Indirect Addressing? In this technique the operand field of instruction specifies the address of address of intended operand for example if instruction LOAD

Explain about combinational circuits, Q. Explain about Combinational Circui...

Q. Explain about Combinational Circuits? Combinational Circuit is one of the models for parallel computers. In interconnection networks, different processors correspond with ea

Chemistry, what are the applications of photochemistry?

what are the applications of photochemistry?

C, Drawbacks of linear arrays

Drawbacks of linear arrays

Perform binary addition and subtraction on two numbers, Q Develop a menu ...

Q Develop a menu driven program to perform Binary addition and subtraction on two numbers that are inputted. Check that entered numbers are in base 2 or not else error messag

Advanced topics of html, HTML is made up of many elements, a lot of them ar...

HTML is made up of many elements, a lot of them are overlooked. Though you can develop a Website with the basic knowledge of HTML, to take benefit of many of the advanced features,

Difference between digital zoom and optical zoom, Question: (a) What ar...

Question: (a) What are effect presets and how can they be helpful? (b) Explain the difference between digital zoom and optical zoom. (c) Explain exposure in the context o

Optimum solution based on constraint problems, Optimum solution based on co...

Optimum solution based on constraint problems: Whether depending on what solver you are using so there constraints are often expressed as relationships between variables as e.

Objectives-classification of parallel computers , Objectives After goi...

Objectives After going through this unit, you should be able to: Describe the diffrent criteria on which classification of parallel computers are based; Examine the

Explain shared memory system and tightly coupled system, Shared Memory Syst...

Shared Memory System / Tightly Coupled System Shared memory multiprocessors have the subsequent features: For real-time high-speed processing these systems are preferabl

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