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

Date mining, I have assignment in Date mning can you help me

I have assignment in Date mning can you help me

Function, write a function named "location_of_largest"that takes as its arg...

write a function named "location_of_largest"that takes as its arguments the following:(1) an array of integer values

Random reading and writing and Closing a fcb file, The 21H function and the...

The 21H function and the 22H function of the 21H interruption are the ones in charge of realizing the random readings and writings in that order. The random register number and the

Explain application and system software, Question 1 Explanation of impact ...

Question 1 Explanation of impact of Information Technology on governments Question 2 Explain application and system software Question 3 Briefly explain real time a

Database, Q1: ER modelling & logical design. An information system is requi...

Q1: ER modelling & logical design. An information system is required for an online auction site, based on the following speci?cation: Only registered users can use the site. Privat

Erp components, What constitutes ERP? ERP typically comprises a client ...

What constitutes ERP? ERP typically comprises a client server architecture, fourth generation language, RDBMS and graphical user interface in an open systems environment. It

Surveying, describe the two fundament purpose of surveying

describe the two fundament purpose of surveying

Flowchart, create a flowchart showing average score for the 3 quizzes assum...

create a flowchart showing average score for the 3 quizzes assume that there are 3 sections each having 5 students the only valid number to be entered is 1-100 for the quizzes shou

Python - Dictionary, A dictionary is variable and is one more container typ...

A dictionary is variable and is one more container type that can store any number of Python objects, counting other container types. Dictionaries consist of pairs (identified items

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