Dynamically linked segmentation system, Operating System

Assignment Help:

Sharing segments between processes without requiring the same segment number is possible in a dynamically linked segmentation system.

a. Define a system that permits static linking and sharing of segments without requiring that the segment numbers be the same.

b. Describe a paging scheme that permits pages to be shared without requiring that the page numbers be the same.

Answer: Both of these problems decrease to a program being able to reference both its own code and its data without knowing the segment or page number associated with the address. MULTICS solved this difficulty by associating four registers with each process. One register had the address of the existing program segment another had a base address for the stack another had a base address for the global data and so on. The idea is that all references have to be indirect during a register that maps to the current segment or page number. Through changing these registers the same code can execute for different processes without the same page or segment numbers.


Related Discussions:- Dynamically linked segmentation system

Kernel, 1. What must a kernel provide for an effective user-level thread im...

1. What must a kernel provide for an effective user-level thread implementation? 2. With respect to the quantum q in a scheduling algorithm, explain and discuss the impact of the

How can a user program disturb the normal operation, How can a user program...

How can a user program disturb the normal operation of the system? a) Issuing illegal I/O operation. b) By accessing memory locations within the OS itself. c) Refusing to

What is a path name, What is a path name? A pathname is the path from t...

What is a path name? A pathname is the path from the root by all subdirectories to a specified file. In a two-level directory structure a user name and a file name explain a pa

Digital circuits and design , 1. Draw a schematic diagram of a CMOS inverte...

1. Draw a schematic diagram of a CMOS inverter and explain its operation. 2. Draw schematic diagrams of CMOS NAND and NOR gates, and explain their operation. 3. Explain what

What is external fragmentation?, What is external fragmentation? As pro...

What is external fragmentation? As process are removed from and loaded to the memory free memory space is bracken into pieces .external fragmentation take place when enough mem

Write a short note about context switch, Write a short note about context s...

Write a short note about context switch. Switching the CPU to another process needs saving the state of the old process and loading the saved state for the new process. This ta

Define a state which is not a fundamental process state, Define a state whi...

Define a state which is not a fundamental process state Answer: Blocked state is not a fundamental process state

Medium term scheduler, Medium term scheduling is form of the swapping ope...

Medium term scheduling is form of the swapping operation. This attaches to processes that are in a suspended or blocked state. They are swapped out of real-memory storage until t

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