Enforce memory protection at compile time?, Operating System

Assignment Help:

Why is it not possible to enforce memory protection at compile time?

 Every process should be protected against unwanted interference by other process, whether intentional or accidental. Therefore programs in other process must not be able to reference memory locations in a process for reading or writing purposes without permission.

      Satisfaction of relocation requirements add to the difficulty in satisfying the protection requirement. For the reason that the location of the program in main memory is unpredictable, it is unfeasible to check absolute addresses at compile time to assure protection. The majority programming languages permit the dynamic calculation at the run time. Therefore all memory    references generated by a process should check at run time to ensure that they refer only to the memory space allocated to that process. It is able to be seen that the mechanism that supports relocation also supports protection.

 


Related Discussions:- Enforce memory protection at compile time?

Compute how many disk input - output operations are required, Q. Consider ...

Q. Consider a file at present consisting of 100 blocks. Presume that the file control block (and the index block in the case of indexed allocation) is already in memory. Compute h

Operation management, trace the historical evolution of the operations mana...

trace the historical evolution of the operations managent from themainly rural agricultural era of the artisans to the present day industrial revolution, high technoligical advance

Crank-nicolson timestepping schemes, For the heat conduction problem, inves...

For the heat conduction problem, investigate the effects on the numerical solution of the following aspects: 1. non-uniform meshes with re?nement at both ends versus a uniform m

Interval between time of submission and completion of job, Interval among t...

Interval among the time of submission and completion of the job is known as                    Interval among the time of submission and completion of the job is known as Turn

What does verification represent, What does Verification represent? Ver...

What does Verification represent? Verification shows the set of activities that are carried out to confirm that the software correctly executes the specific functionality.

Write xeyes on command line, Ask question #Minimum 100 words accepteWrite a...

Ask question #Minimum 100 words accepteWrite an xeyes command to display a window that is: ? SIZE: ¦ 400 pixels wide ¦ 300 pixels tall ? LOCATION: ¦ 100 pixels from the right edge

Binary and data representation, Computing uses three number bases:- Binary ...

Computing uses three number bases:- Binary (base 2), Octal (base 8) and Hexadecimal (base 16). Binary has been described before, although various catchphrases are used to describe

Explain demand paging in virtual memory system, Question 1 Explain with di...

Question 1 Explain with diagram all possible states a process visits during the course of its execution Question 2 Discuss Inter-process Communication. What is critical-secti

Read-write locks, Consider a large web-based database. In some sense, Googl...

Consider a large web-based database. In some sense, Google is sort of like this. There might be many users who want to read from the database, but only a few users who are allowed

Operational management, explain the link between operations management and ...

explain the link between operations management and strategic planning of daily goods shop

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