What is a process control block?, Operating System

Assignment Help:

What is a Process Control Block?

Every process in the operating system is represented by a process control block as well called a task control block. It contains several pieces of information associated with a specific process such as

  • Process state: The state perhaps new, ready, running, and waiting, halted and etc.
  • Program counter: The counter point to the address of the next instruction to be executed for this process.
  • CPU registers: The registers differ in number and type, depending on the computer architecture. They comprise index registers, accumulators, stack pointers and general purpose registers plus any condition code information. Along with PC, this state information has to be saved when an interrupt occurs, to permit the process to be continued correctly afterward.
  • CPU scheduling information: This information comprises a pointer to scheduling queues, process priority and any other scheduling parameters.
  • Memory management information: this information may comprise such information as the value of the base and limit registers the page tables or the segment tables depending on the memory system used by the OS.
  • Accounting information: It comprise information about the amount of CPU and time limits, account numbers, real time used, job or process numbers and so on.
  • I/O status information: The information comprises the list of I/O devices allocated to this process, a list of open files and so on.

 


Related Discussions:- What is a process control block?

What is direct access, Normal 0 false false false EN-IN...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Exdplain many-to-many model, Many-to-Many Model The many-to-many model-...

Many-to-Many Model The many-to-many model- many user-level threads to many kernel-level threads avoids several of the limitations of the one-to-one model, although extending mu

Briefly explain process management in windows 2000., Briefly explain proces...

Briefly explain process management in Windows 2000. The Windows 2000 process manager provides for deleting, creating and using threads and processes. It has no knowledge about

Write in brief on unix file structure, Write in brief on UNIX file structur...

Write in brief on UNIX file structure. UNIX considers every file to be a sequence of 8-bit bytes no interpretation of these bits is made by the operating system. This system pr

What are the services provided by the operating systems, What are the servi...

What are the services provided by the operating systems?  Program Development It provides a variety of services and facilities, such as debuggers and editor, to help the

Explain fifo page replacement, FIFO page replacement This is the easie...

FIFO page replacement This is the easiest page replacement algorithm. At this juncture the 1 st page entering is the 1 st to leave that is the oldest page leaves. To execute

Explain the concept of reentrancy, Explain the concept of Reentrancy? I...

Explain the concept of Reentrancy? It is a useful, memory-saving method for multiprogrammed timesharing systems. A Reentrant Procedure is one in which many users can share a si

Differences among user-level threads and kernel-level thread, What are two ...

What are two differences among user-level threads and kernel-level threads? Under what circumstances is one type better than the other? (1) User-level threads are unknown by th

Explain basic file system file system architecture, Basic File System ...

Basic File System Uses the specific device driver. Deals with blocks of data that are exchanged with the physical device. Concerned with the placement of blocks on

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