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 a microform, What is a microform? This is the collective term f...

What is a microform? This is the collective term for all micro images kepted on a wide range of microfilm media, like roll film, fiche, aperture cards, strip or jackets.

Show the noframes tag, Q. Show the Noframes Tag? tag can be used for t...

Q. Show the Noframes Tag? tag can be used for those browsers which aren't able to interpret tags. Even though most, if not all, of your visitors would

Explain typical packet switching network configuration, Explain typical pac...

Explain typical packet switching network configuration. Packet Switching: In packet switching the nodes handle greatly smaller data length than are determined in message swit

Explain circuit switching versus packet switching, Explain difference of Ci...

Explain difference of Circuit switching versus Packet switching. Within circuit switching an end-to-end path is to be establishing before any data can be sent. Previously a con

Define the concept of inheritance, Define the concept of Inheritance I...

Define the concept of Inheritance Inheritance is property of reusing the code within the object oriented development. While modelling, we look at the all the classes, and try

Determine what is the frame rate and frame duration, (i)  A multiplexer com...

(i)  A multiplexer combines four 100-Kbps channels using a time slot of 4 bits. Each Frame has the size of 16 bits. a)  Show the output with the four inputs as shown in the figu

Select-options and parameters statement, The fields specified by select-opt...

The fields specified by select-options and parameters statement cannot be grouped together in the selection screen.  No, It can be grouped together in the selection screen

Give difference between top down and bottom up parsing, Give difference bet...

Give difference between top down parsing and bottom up parsing. Top down parsing: Specified an input string, top down parsing tries to derive a string identical to this by s

Use of typewriters for multiple copies, Use of Typewriters for Multiple Cop...

Use of Typewriters for Multiple Copies : Offices frequently require copies of various letters and documents. The simplest method is to make the copies at the same time along with

Describe type library and what is its purpose, Type libraries are files tha...

Type libraries are files that explicitly explain some or all of the contents of components. This haves information about the methods, properties, constants, and other members expos

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