Process Management -Compiled for CSIT

Slides:

Advertisements

Similar presentations

1 Processes and Threads Creation and Termination States Usage Implementations.

Advertisements

Chapter 2 Operating System Overview Operating Systems: Internals and Design Principles, 6/E William Stallings.

Pertemuan 13 Threads Matakuliah: H0483 / Network Programming Tahun: 2005 Versi: 1.0.

Maninder Kaur OPERATING SYSTEM Maninder Kaur 11 Oct 2010.

Operating Systems COMP 4850/CISG 5550 Processes Introduction to Threads Dr. James Money.

Prof. B. I. Khodanpur HOD – Dept. of CSE R. V. College of Engineering

Processes and Threads Chapter Processes 2.2 Threads 2.3 Interprocess communication 2.4 Classical IPC problems 2.5 Scheduling.

Thursday, June 08, 2006 The number of UNIX installations has grown to 10, with more expected. The UNIX Programmer's Manual, 2nd Edition, June, 1972.

1 What is a Process ? The activity of program execution. Also called a task or job Has associated with it: Code Data Resources A State An executing set.

Review: Operating System Manages all system resources ALU Memory I/O Files Objectives: Security Efficiency Convenience.

Chapter 2 Processes and Threads Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. All rights reserved

1 Chapter 4 Threads Threads: Resource ownership and execution.

OPERATING SYSTEM LESSON 4 PROCESS.

OPERATING SYSTEMS DESIGN AND IMPLEMENTATION Third Edition ANDREW S. TANENBAUM ALBERT S. WOODHULL Yan hao (Wilson) Wu University of the Western.

Chapter 2 Operating System Overview Patricia Roy Manatee Community College, Venice, FL ©2008, Prentice Hall Operating Systems: Internals and Design Principles,

Operating System Overview

Operating System A program that controls the execution of application programs An interface between applications and hardware 1.

Operating Systems.  Operating System Support Operating System Support  OS As User/Computer Interface OS As User/Computer Interface  OS As Resource.

Processes and Threads.

 What is an operating system? What is an operating system?  Where does the OS fit in? Where does the OS fit in?  Services provided by an OS Services.

 What is OS? What is OS?  What OS does? What OS does?  Structure of Operating System: Structure of Operating System:  Evolution of OS Evolution of.

Operating Systems.

 Introduction to Operating System Introduction to Operating System  Types Of An Operating System Types Of An Operating System  Single User Single User.

Silberschatz, Galvin and Gagne  2002 Modified for CSCI 399, Royden, Operating System Concepts Operating Systems Lecture 1 Introduction Read:

Fall 2000M.B. Ibáñez Lecture 01 Introduction What is an Operating System? The Evolution of Operating Systems Course Outline.

MODERN OPERATING SYSTEMS Third Edition ANDREW S. TANENBAUM Chapter 2 Processes and Threads Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall,

INVITATION TO COMPUTER SCIENCE, JAVA VERSION, THIRD EDITION Chapter 6: An Introduction to System Software and Virtual Machines.

ITEC 502 컴퓨터 시스템 및 실습 Chapter 2-1: Process Mi-Jung Choi DPNM Lab. Dept. of CSE, POSTECH.

C o n f i d e n t i a l 1 Course: BCA Semester: III Subject Code : BC 0042 Subject Name: Operating Systems Unit number : 1 Unit Title: Overview of Operating.

Chapter 2 Processes and Threads Introduction 2.2 Processes A Process is the execution of a Program More specifically… – A process is a program.

Operating Systems Processes 1.

ITFN 3601 Introduction to Operating Systems Lecture 3 Processes, Threads & Scheduling Intro.

1 Computer Systems II Introduction to Processes. 2 First Two Major Computer System Evolution Steps Led to the idea of multiprogramming (multiple concurrent.

CIS250 OPERATING SYSTEMS Chapter One Introduction.

Assoc. Prof. Dr. Ahmet Turan ÖZCERİT.  What Operating Systems Do  Computer-System Organization  Computer-System Architecture  Operating-System Structure.

McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 OS 1.

Cs431-cotter1 Processes and Threads Tanenbaum 2.1, 2.2 Crowley Chapters 3, 5 Stallings Chapter 3, 4 Silberschaz & Galvin 3, 4.

Operating Systems.

Processes and Threads MICROSOFT.  Process  Process Model  Process Creation  Process Termination  Process States  Implementation of Processes  Thread.

CS4315A. Berrached:CMS:UHD1 Introduction to Operating Systems Chapter 1.

2.1 Processes  process = abstraction of a running program  multiprogramming = CPU switches from running program to running program  pseudoparallelism.

Process Control Management Prepared by: Dhason Operating Systems.

© Janice Regan, CMPT 300, May CMPT 300 Introduction to Operating Systems Operating Systems Overview: Using Hardware.

1 Module 3: Processes Reading: Chapter Next Module: –Inter-process Communication –Process Scheduling –Reading: Chapter 4.5, 6.1 – 6.3.

1 OPERATING SYSTEMS. 2 CONTENTS 1.What is an Operating System? 2.OS Functions 3.OS Services 4.Structure of OS 5.Evolution of OS.

Operating System Components) These components reflect the services made available by the O.S. Process Management Memory Management I/O Device Management.

Sujata Ray Dey Maheshtala College Computer Science Department

Jonathan Walpole Computer Science Portland State University

Chapter 2 Processes and Threads Today 2.1 Processes 2.2 Threads

Process Management Presented By Aditya Gupta Assistant Professor

Processes A process is a running program.

Introduction to Operating System (OS)

Chapter 1: Introduction

Chapter 3: Processes.

MODERN OPERATING SYSTEMS Third Edition ANDREW S

Process Models, Creation and Termination

More examples How many processes does this piece of code create?

2.1 Processes process = abstraction of a running program

Module 2.1 COP4600 – Operating Systems Richard Newman

Chapter 2 Processes and Threads 2.1 Processes 2.2 Threads

Sujata Ray Dey Maheshtala College Computer Science Department

Process Description and Control

The Main Features of Operating Systems

Chapter 2 Processes and Threads 2.1 Processes 2.2 Threads

CS510 Operating System Foundations

Chapter 2 Operating System Overview

Process Management -Compiled for CSIT

Introduction to Operating Systems

Prof. B. I. Khodanpur HOD – Dept. of CSE R. V. College of Engineering

Operating System Overview

Presentation transcript:

Process Management -Compiled for CSIT (Ref: Modern Operating System, A.S Tannebum, Lecuture notes of Prof. Prashant Shenoy)

Topics to be Covered 2.1 Introduction to process 2.2 Interprocess Communication 2.3 Process Scheduling

What is Process Process Vs. Program? An abstraction of running process A process is an instance of a computer program that is being executed. Process Vs. Program?

Process Management Provides ability to have (pseudo) concurrent operation even with only one CPU Turns single CPU into Multiple Virtual CPUs Multiprogramming achieved (not to be confused with multiprocessing) Gives illusion of parallelism (pseudoparallelism)

What is Multiprogramming Multiprogramming is a technique to execute number of programs simultaneously by a single processor. In Multiprogramming, number of processes reside in main memory at a time. The OS picks and begins to executes one of the jobs in the main memory. If any I/O wait happened in a process, then CPU switches from that job to another job. Hence CPU in not idle at any time.

Multiprogramming (Contd…): OS Job 1 Job 2 Job 3 Job 4 Job 5 Figure dipicts the layout of multiprogramming system. The main memory consists of 5 jobs at a time, the CPU executes one by one. Advantages: Efficient memory utilization Throughput increases CPU is never idle, so performance increases.

The Process Model Runable software organized into number of sequential process Process – An instance of a program, replete with registers, variables, and a program counter Each process has it own virtual CPU It has a program, input, output and a state The real CPU switches back and forth from process to process This rapid switching back and forth is called multiprogramming

Multiprogramming (a) Multiprogramming of four programs. (b) Conceptual model of four independent, sequential processes. (c) Only one program is active at once.

Windows Snapshot

Process Creation Events which can cause process creation System initialization. Execution of a process creation system call by a running process. A user request to create a new process. Initiation of a batch job.

Process Termination Events which cause process termination: Normal exit (voluntary). Error exit (voluntary). Fatal error (involuntary). Killed by another process (involuntary).