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

Analyze the complexity of dijkstra''s algorithm, QUESTION (a) Given the...

QUESTION (a) Given the graph as shown in figure, apply Lagrangian technique to complete the table assuming μ=1 and T=14 Path P

Data structures, let me know if you can do this assignment and how long it ...

let me know if you can do this assignment and how long it takes

Explain what is rmi, QUESTION (a) Explain what is RMI? (b) Draw a di...

QUESTION (a) Explain what is RMI? (b) Draw a diagram showing the different parts of the Java RMI architecture. (c) What is the function of the RMI security manager and RM

Assigment, how to measure marginal utility.?

how to measure marginal utility.?

Spreadsheet to provide a business solution, Gareth's Gardens is a small fir...

Gareth's Gardens is a small firm that specialises in planning and laying new gardens. A particularly popular garden plan consists of a patio and lawn, together with a circular pon

Internet, Explain how the internet works

Explain how the internet works

Describe counting instructions, They are used to reduce or enlarge the cont...

They are used to reduce or enlarge the content of the counters. DEC INC DEC INSTRUCTION Idea: To diminish the operator. Syntax: DEC destiny This action subtracts 1 from the destiny

Network control, Network Control, Engineering and Management Network co...

Network Control, Engineering and Management Network control in this sense involves traffic management, and the engineering of the networks to support varying traffic loads. In

Cai, what is cai

what is cai

Subroutine and functions, Subroutine and Functions: In a program, it ...

Subroutine and Functions: In a program, it is often necessary to repeat a statement or group of statements at several points to accomplish a particular task. Repeating the sa

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