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

What is a signaling protocol, QUESTION (a) How VoIP Works and how VoIP ...

QUESTION (a) How VoIP Works and how VoIP helps today's business? (b) What is a signaling protocol? Explain about SIP components and their key benefits (c) What is IPTV? L

Describe symbols chart in assembly process ?, SYMBOLS CHART Every one of t...

SYMBOLS CHART Every one of the parts on code line in assembler is known as token, for instance on the code line: MOV AX, Var We comprise three tokens, the MOV instruction, the AX o

Stack instructions, These instructions permit the use of the stack to store...

These instructions permit the use of the stack to store or recover data. POP POPF PUSH PUSHF POP INSTRUCTION Purpose: It improves a portion of information from the stack POPF INST

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

Flowcharts, what is a dry running of flow chart?

what is a dry running of flow chart?

Computer graphic cylinder, How can I draw a cylinder between 2 points

How can I draw a cylinder between 2 points

Outline the five main steps in the web design process, QUESTION (a) Out...

QUESTION (a) Outline the five main steps in the Web Design Process (b) Draw an annotated diagram explaining how data is transmitted to web servers during a standard form sub

Unix fork program help, Will someone be able to help me with this I have tw...

Will someone be able to help me with this I have two text files that I can send. I am confused, is someone looking at this or is it still waiting to be assigned? this is the code

Basic concepts of Assembler language , Information Units In order for the P...

Information Units In order for the PC to process information, it is essential that this information be in unique cells called registers. The registers are sets of 8 or 16 flip-flop

Binary, Ask quwhat is binary estion #Minimum 100 words accepted#

Ask quwhat is binary 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