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

Java, what is meant by deliverable in strus base applications

what is meant by deliverable in strus base applications

Data communication , (iv) Suppose that the TCP entity receives a 1.5 megaby...

(iv) Suppose that the TCP entity receives a 1.5 megabyte file from the application layer and that the IP layer is willing to carry blocks of maximum size 1500 bytes. Calculate the

List the various applications of ai, Question 1 What are the important Iss...

Question 1 What are the important Issues in Search Problem Question 2 What do you mean by Predicates? Briefly explain Question 3 What are the advantages of Wireles

Development of UNIX , Development of UNIX: The original UNIX developme...

Development of UNIX: The original UNIX development was performed on a Digital PDP-7 minicomputer and later moved to a PDP-11 minicomputer, the forerunner of the VAX computer.

Generations of computers, Ask question #Minimum assignment on generations o...

Ask question #Minimum assignment on generations of computers 100 words accepted#

COMputer fundamentals, explain the expression "A=5"

explain the expression "A=5"

Mr, Please what is the different between computer science and information t...

Please what is the different between computer science and information technology? Which of this require too much reading? Thanks

Define jumps and loops , The unconditional jumps in a written program in a...

The unconditional jumps in a written program in assembler language are specified by the jmp instruction; a jump is to moves the flow of the execution of a program by sending the co

Discrete Math, 3. Let f, g: R?R, where g(x) 1 - x + x2 and f (x)=ax + b. I...

3. Let f, g: R?R, where g(x) 1 - x + x2 and f (x)=ax + b. If (g ? f )(x)= 9x2 - 9x + 3, determine a, b.

What is Assembler Programming?, To build assembler programs with TASM prog...

To build assembler programs with TASM programs is a different program structure than from using debug program. It''s important to comprise the subsequent assembler commands: ..CODE

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