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

Ttl, What are advantages of totem pole over passive pull up circuit ?

What are advantages of totem pole over passive pull up circuit ?

The internet or the world wide web, The internet or the World Wide Web is ...

The internet or the World Wide Web is the most familiar and popular example. These databases hold vast amounts of information, for example, on companies. By obtaining details in t

Explain ring counter with diagrams, Question 1 Convert the following hexad...

Question 1 Convert the following hexadecimal numbers to base 2 (D73)16 (A21)16 Question 2 Convert the following binary numbers to base 16 (11001011)2 (11

Define levels of abstraction in a dbms, Define Levels of Abstraction in a D...

Define Levels of Abstraction in a DBMS, explain briefly, Conceptual Schema, Physical Schema, External Schema

Logic gates:truth table, truth table:x^yvz

truth table:x^yvz

Telecommunications standards, TELECOMMUNICATIONS STANDARDS: They are d...

TELECOMMUNICATIONS STANDARDS: They are defined internationally by the CCITT (Consultative Committee for International Telegraphy and Telephones), but to deal with the rapidly

Discuss the roles of system analysts in detail, Question 1 Explain the ...

Question 1 Explain the following system design tools in detail System Flowcharts Decision tables Decision trees Organization charts Question 2 Write s

Discuss about the descriptor classes, Question 1 List down any six feature...

Question 1 List down any six features of a Smartphone Question 2 Give a brief note on a) Internal Flash Disk. b) Use of C++ in Symbian OS Question 3 What are the naming

Quantitative Methods in Business Decision Making, 4. Union City Al has dec...

4. Union City Al has decided to upgrade their tornado warning system. The city leaders have identified six potential locations for erecting a warning siren tower. They want to e

Widening web, The Widening Web The idea, the whole world is agog...

The Widening Web The idea, the whole world is agog now had accidental origins. Here is how it all began. In early 1969, the U.S. Defence department financed a network fo

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