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

Explain popular way commonly used to evaluate interfaces, Question: Usi...

Question: Using a questionnaire is a popular way commonly used to evaluate interfaces. (a) Describe advantages of using questionnaires as a means to evaluate interfaces.

Excel, how to use excel..

how to use excel..

What are the three basic security provided by ssl, QUESTION (a) Can SSL...

QUESTION (a) Can SSL be used to encrypt email data? Justify your answer (b) What are the three basic security provided by SSL? (c) State the port number used by applicati

Discuss the attributes of speech codec, Question 1 What is mobile telephon...

Question 1 What is mobile telephone initialization? Explain the three main goals of this procedure Define GSM system operations Introduction to mobile telephone initializ

Interpreter, Interpreter: An interpreter is a program that translates...

Interpreter: An interpreter is a program that translates each statement in the programming language into machine code and runs it.  Such an arrangement means that to run the

Programs - programming language, Programs - programming language: Prog...

Programs - programming language: Programs to implement algorithms on the computer must be written in a language that the computer can understand. It is fruitful, therefore, to

Explain different types of attacks, Question 1 Explain synchronous and asy...

Question 1 Explain synchronous and asynchronous Data Replication Question 2 Write a short note on Access Time, Latency, Transfer Time, and Streaming Tape Question 3

Computer, what is the first computer in this world

what is the first computer in this world

Write Your Message!

Captcha
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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd