explain Process States and Process Control Block (PCB), Basic Computer Science

Assignment Help:
Process States
Throughout the lifespan of a process, its execution position may be in one of four states: (linked with each state is generally a queue on which the process resides)
1. Executing: the process is at present running and has control of a CPU
2. Waiting: the process is at present able to run, but must wait until a CPU becomes available
3. Blocked: the process is at present waiting on I/O, either for input to arrive or output to be sent
4. Suspended: the process is at present able to run, but for some reason the OS has not placed the process on the prepared queue
5. Ready: the process is in memory, will execute specified CPU time.
Process Control Block (PCB)
If the OS allows multiprogramming, then it requires keeping track of all the processes. For every process, its process control block PCB is used to track the process''s execution status, together with the following:
1. Its present processor register contents
2. Its processor state (if it is blocked or set)
3. Which resources have been allocated to it
4. Its memory state
5. A pointer to its stack

6. Which resources it needs

Related Discussions:- explain Process States and Process Control Block (PCB)

What is nanp? explain, Question 1 What is NANP? Explain Question 2 ...

Question 1 What is NANP? Explain Question 2 What is E&M signaling? Discuss in brief Question 3 What are the common custom calling features? Question 4 Expl

Basic syntax of python language, The Python language has a lot of similarit...

The Python language has a lot of similarities to Perl, C and Java. Though, there are some specific differences between the languages. First Python Program: relative Mode Programmin

Software development, requirement analysis and specification for online vot...

requirement analysis and specification for online voting

Reasons for recommendation free and open source software, For multi-nationa...

For multi-national business IT system, free and open source software (FOSS) is recommended over a proprietary system. The reasons for this recommendation are: 1. Security I

How to crack a password, how can i crack the password of vmware virtual mac...

how can i crack the password of vmware virtual machine

Python Identifiers, A Python identifier is a name used for classify a funct...

A Python identifier is a name used for classify a function, variable, class, module or any other object. An identifier begins with a letter A to Z or a to z or an underscore (_) fo

E - R diagram, draw the e r diagram for irctc rail ticket reservation onlin...

draw the e r diagram for irctc rail ticket reservation online

Why assembly language is good?, Because it is enormously low level, assembl...

Because it is enormously low level, assembly language can be optimized enormously well. Therefore assembly language is used where the extreme performance is needed for applications

System software, System software: System software helps run the  compu...

System software: System software helps run the  computer hardware and system. It is designed to control the operations of a computer and coordinate all external devices like c

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