Operating system problems, computer science, Basic Computer Science

Operating system problems, computer science, Basic Computer Science

Assignment Help:

1. In discussing software algorithms for mutual exclusion, we noted that optimizing compilers and out-of-order execution by processors could invalidate most of these algorithms because such “optimization” does not take into account that the value of a shared variable can be changed by something other than the immediately evident code. This overly-simplistic characterization also happens with I/O devices, especially simple programmed I/O where data or control register contents changes as a result of the state of the device, not as a consequence of execution of processor instructions, as well as with clocks where the current time register changes continually. It also happens when DMA is used to input blocks of data, which is slightly more complex because the addresses whose value changes are not evident literally. What does this imply about device drivers?

Related Discussions:- Operating system problems, computer science

Data structures hw help, Create an implementation of the Ordered Associativ...

Create an implementation of the Ordered Associative Array API using left-leaning red-black trees. Illustrate the use of the API by refactoring your WordBench as a client of Ordered

Types of operating systems, Operating Systems: An operating system is a se...

Operating Systems: An operating system is a set of programs that manage computer hardware resources and provide common services for application software. There are following kind

C programming, hello do have c programming experts

hello do have c programming experts

Distributed transaction management, 3. Discuss the objectives of Query Proc...

3. Discuss the objectives of Query Processing.

Magnetic media, what are the five precautions to be observed when handling ...

what are the five precautions to be observed when handling magnetic media?

Flow decomposition technique to list the cycles, QUESTION (a) Consider ...

QUESTION (a) Consider the graph below, use the Flow Decomposition technique to list the cycles and paths produced. (b) Pr

Evolution of a computer, EVOLUTION OF A COMPUTER: Although 'computer',...

EVOLUTION OF A COMPUTER: Although 'computer', as we understand it today, is relatively of recent innovation, its development rests on centuries' of research. This section pres

Write a program to solve a maze 10x10, write a program to solve a 10x10 maz...

write a program to solve a 10x10 maze. prompt the user for an input text file containing ten rows(ten characters on each row). Use following characters in the input file: * startin

Write a detailed note on colour balance, Question 1 Write a long note on s...

Question 1 Write a long note on setting up a typical on-location News Interview Question 2 Write a long note on how to work with presenters Question 3 Write long notes

Qbasic, write a program of circle of any colour

write a program of circle of any colour

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