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

What is information technology, Information Technology is nothing but the s...

Information Technology is nothing but the study, design, development, execution, support and management of computer based information systems mainly the applications software & har

Running time - metrics for performance evaluation, Running Time - Metrics f...

Running Time - Metrics for performance evaluation: Running time is amount of time consumed in execution of an algorithm for a provided input on N-processor based parallel comp

What is functions indention, Use tabs to bring some structure into your fun...

Use tabs to bring some structure into your function body if(nPos > 1) then nRetrun = True else nRetrun = False end if

Defined for a push button fields in the screen attributes, What is to be de...

What is to be defined for a push button fields in the screen attributes? A function code has to be described in the screen attributes for the push buttons in a screen.

Determine the decimal equivalent of binary number, The decimal equivalent o...

The decimal equivalent of Binary number 11010 is ? Ans. 11010 = 1 X 2 4 + 1 X 2 3 + 0 X 2 2 + 1 X 2 1 = 26.

What is meaning of term byte stuffing, The term byte stuffing refers to: ...

The term byte stuffing refers to: The term byte stuffing consider as to data stuffing used along with character -oriented hardware.

Explain about olap, OLAP is called as online analytical processing which gi...

OLAP is called as online analytical processing which gives answers to queries which are multi dimensional in nature. It composes relational reporting and data mining for giving sol

What is assembly language, What is assembly language? A complete set of...

What is assembly language? A complete set of symbolic names and rules for the use of machines comprise a programming language, usually referred to as an assembly language.

Design a sample counter, Let's design a synchronous BCD counter. A BCD coun...

Let's design a synchronous BCD counter. A BCD counter follows a sequence of ten states and returns to 0 after count of 9. These counters are also known as decade counters. This typ

Classification based on grain size, Classification Based On Grain Size ...

Classification Based On Grain Size  This classification is based on identifying  the parallelism in a program to be implemented on a multiprocessor system. The plan is to recog

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