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

Democracy and ICT, Ask questio Discuss the idea of democracy and its overl...

Ask questio Discuss the idea of democracy and its overlapping meanings for IS design. How would you democratically design IS? How does participation help the practice of democrac

What are the various skills needed for broadcasting and film, Question 1 W...

Question 1 What are the various skills needed for broadcasting and film? Question 2 What is a 2 dimensional animations and 3 dimensional animations? Question 3 Different

Algorithmic, define it #Minimum 100 words accepted#

define it #Minimum 100 words accepted#

Flowcharts, flowchart that display yhe students average scores for 3 quizze...

flowchart that display yhe students average scores for 3 quizzes.Assume that there are 3 sections having 5 student each.Valid number is 1-100 for the quizzes.Enter an invalid numbe

Buses, BUSES It can be seen from Figure 4 that there are three buses ...

BUSES It can be seen from Figure 4 that there are three buses - the data bus, the address bus, and the control bus. Each bus consists of a group of parallel wires. The da

Packet switching, Packet Switching: This is one of recent techniques o...

Packet Switching: This is one of recent techniques of switching. Packet switching was originally developed for use by ARPA network by the Defence Department of US. According t

C++, whats the out put of int main(){ int n=310; funcone(n); functwo(&n); ...

whats the out put of int main(){ int n=310; funcone(n); functwo(&n); cout return 0; } void funcone(intn) n=240; } void func two(intn*) { n=120; }

Technology, We normally think of the arts as very different from technologi...

We normally think of the arts as very different from technologies in spite of the fact that art (with perhaps a few exceptions) is practiced with the help of technology. This pract

Transaction-based model, Transaction-based model: Here, the pricing i...

Transaction-based model: Here, the pricing is based on providing a committed business service, for ex, processing payroll for a global company as part of HR offering and this

Rooted tree, Ask qu The figure below shows a rooted tree, 756_Find the hei...

Ask qu The figure below shows a rooted tree, 756_Find the height.png 1.1. Find the height/level of the tree as shown above?estion #Minimum 100 words accepted#

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