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

Data base, advantages of file base system

advantages of file base system

Types of computer on basis of size and capabilities, Another way of classif...

Another way of classifying a computer system is based upon its size and capabilities: Microcomputers: Microcomputers are systems based on the use of microprocessors. A Micr

Definition of Internal hardware interruptions, Internal interruptions are...

Internal interruptions are produced by convinced events which come during the execution of a program. These types of interruptions are handled on their totality by the hardware and

Why we need data mining? Give an example to illustrate your, Why we need da...

Why we need data mining? Give an example to illustrate your answer.

Threading Module of python, The latest threading module comprised with Pyth...

The latest threading module comprised with Python 2.4 provides much more powerful, high-level hold for threads than the old thread module. The threading module depictions all the m

Operating system, Operating System: Operating  System is the software ...

Operating System: Operating  System is the software that manages all the computers' resources to optimize its performance provides common services for efficient execution of v

Computer science, Explain Canonical cover and Extraneous Attributes with ex...

Explain Canonical cover and Extraneous Attributes with examples.

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