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

Bit pair recoding, 20*2

20*2

Basic computer organisation, Explain for assignment with this title

Explain for assignment with this title

Java Assignment, Hi? are you conversant with Java that is J2SE 6 coz i have...

Hi? are you conversant with Java that is J2SE 6 coz i have assignments on this area?

Computer education, what is cai explain its pitfalls

what is cai explain its pitfalls

Languages, Languages The language is a program containing rules and...

Languages The language is a program containing rules and guidelines to help us in making programs. There are various languages like C, Basic, COBOL, PASCAL, FORTRAN etc. Th

Alternative approaches for acquiring software, Alternative approaches for a...

Alternative approaches for acquiring software: There are some alternative approaches for acquiring software. They are: i) 'off the shelf' software package ii) 'turnk

What are the uses of the internet, Question 1 What are many of the modern ...

Question 1 What are many of the modern browsers in use today? Describe all in detail Question 2 Write a long note on the uses of Domain Names Question 3 What are the use

Logic and arithmetic functions, The instructions of the logic functions are...

The instructions of the logic functions are: and not, or and xor. These act on the bits of their operators. To make sure the result of the operations we revolve to the cmp and test

Algorithm, what is algorithm

what is algorithm

Electronic transmission frequency, Electronic transmission Frequency: ...

Electronic transmission Frequency: Frequency is the rate at which a wave or cycle alternates between high and low (analog mode) or on and off (digital mode). For example, the

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