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?

Define logical address and physical address, Define logical address and phy...

Define logical address and physical address. An address formed by the CPU is referred as logical address. An address seen by the memory unit that is the single loaded into the

Bio, how it is work.

how it is work.

What are the various available scheme in ipc, Several schemes available are...

Several schemes available are as follows: Pipes : One-way communication process through which different process can interact. The problem is that the two processes could have

What do you understand by active directory domain, Question: a) What ...

Question: a) What do you understand by Active directory domain in Windows Server 2008? Support your answer with a diagram. b) Distinguish between active directory trees

Memory Management Problems, Sir i want formulas in Memory management starti...

Sir i want formulas in Memory management starting from paging till the demang paging in a easy manner for solving problems in competitive exams

What is the purpose of system calls, What is the purpose of system calls? ...

What is the purpose of system calls? System calls permit user-level processes to request services of the operating system.

File management, five major activities on file management in operating syst...

five major activities on file management in operating system.? Explain it.?

Typical virtual memory layout, Using pages makes it easier to manage the wh...

Using pages makes it easier to manage the whole memory, avoiding excessive fragmentation and waste. As an analogy, think of Tetris, but with only square blocks: it is relatively ea

Briefly discuss on real-time scheduling, Briefly discuss on real-time sched...

Briefly discuss on real-time scheduling? It is divided into two types.  Hard real-time systems are needed to complete a critical task within a guaranteed amount of time. T

Transferring files from windows to unix, Transferring files from Windows to...

Transferring files from Windows to Unix Be very careful transferring files from Windows to Unix. If you do transfer a file from Windows to Unix open the file, in Unix, using vi

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