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

Spreadsheet software , Spreadsheet Software : Consider the grid in Fig. ...

Spreadsheet Software : Consider the grid in Fig. 9.4. It is split into rows and columns and is a pictorial representation of a typical spreadsheet program. Figure: Spr

Briefly explain art driven character design, Question 1 What is role playi...

Question 1 What is role playing game? Explain the special design issues for sports games Question 2 What do you mean by collusion? Explain its types Question 3 Wri

Process killed, 1. What actions need to be taken when a program terminates ...

1. What actions need to be taken when a program terminates or a process is killed? What if that process destruction is not the consequence of normal termination, but rather is the

Block diagram of computer, Input unit: These are used to read data and tran...

Input unit: These are used to read data and transfer to primary memory contained in CPU through keyboard or floppy disk or mouse etc. Central Processing Unit (CPU): This consists o

Ip basics, IP provide connectionless service to upper layer IP protocol is ...

IP provide connectionless service to upper layer IP protocol is very simple could not guarantee the reliability of transportations IP protocol is Point to Point IP provide the unif

Cryptography, Question 1 Consider the one-time pad encryption scheme to e...

Question 1 Consider the one-time pad encryption scheme to encrypt a 1-bit message m, and assume m is chosen with uniform distribution from message space M={0,1}. Let E1 be the ev

Introduction Assembly Language, This web page looks at assembly languages i...

This web page looks at assembly languages in a common method. Specific illustrations of addressing modes and instructions from a variety of processors are used to demonstrate the g

Statistics, Scores from a statistics exam are reported as deviation scores....

Scores from a statistics exam are reported as deviation scores. Which of the following deviation scores indicates a higher position in the class distribution?

Object oriented programming, Write a method called Grade that takes a numer...

Write a method called Grade that takes a numeric score and returns a letter grade. Use the rule that 90 to100 is an A, 80 to 89 a B, 60 to 79 is a C, 45 to 59 is a D, and less th

Define internet and explain its working, Question 1 Define Internet and ex...

Question 1 Define Internet and explain its working Question 2 Explain page format specifiers and page content specifiers of XSL-FO Question 3 Write a note on HTML

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