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?

Explain process states in the unix system, Process States A total of n...

Process States A total of nine states are acknowledged by the UNIX system. They are like as follow: User running                                                   Executing

Explain gui based operating system, GUI - Short for Graphical User Interfa...

GUI - Short for Graphical User Interface a GUI Operating System contains icons and graphics and is commonly navigated by using a computer mouse. Below are some instances of GUI Op

Explain operating systems for mainframe computers, What are the main differ...

What are the main differences between operating systems for mainframe computers and personal computers? The design goals of operating systems for those machines are quite diffe

Is there any way to execute truly stable storage, Q. Is there any way to ex...

Q. Is there any way to execute truly stable storage? Describe your answer. Answer: Truly steady storage would never lose data. The fundamental technique for steady storage is

Virtualization, What factors are involved in choosing the host operating sy...

What factors are involved in choosing the host operating system?

What are the advantages and disadvantages of multithreading, What are the a...

What are the advantages and disadvantages of multithreading?  Advantages : Since by multithreading multiple executions are carried out in the same process environment t

Explain the alphabet and string, Explain the Alphabet and String A fini...

Explain the Alphabet and String A finite set of symbols is known as alphabet. An alphabet is frequently denoted by sigma, yet can be given any name. B = {0, 1} says B is an

Define entry section and exit section, Define entry section and exit sectio...

Define entry section and exit section. The critical section problem is to design a protocol that the processes can use to cooperate. Every process must request permission  to e

Explain the booting process for a windows xp system, Q. Explain the booting...

Q. Explain the booting process for a Windows XP system? Answer: (1) Since the hardware powers on the BIOS begins executing From ROMand loads as well as executes the bootstrap

Draw and r chart and an x-bar chart, Thermostats are subjected to rigorous ...

Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. D

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