PPT-Operating Processes

A process is a set of tasks to be performed in a defined sequence A process uses inputs to create outputs that are of value to the customer and the organization An organizations operating processes should fulfill two goals. 2.1 The Process Notion . 2.2 Defining and Instantiating Processes. Precedence Relations. Implicit Process Creation . Dynamic Creation With fork And join. 2.3 Basic Process Interactions. Competition: The Critical Section Problem . 1. Hugh C. Lauer. Xerox Corporation. Palo Alto, Californi. a. Roger M. Needham. Cambridge University. Cambridge, England. Proc. Second International Symposium on Operating Systems, IRIA, Oct. 1978. CS5204 – Operating Systems. 1. CS 5204 – Operating Systems. 2. Communicating Sequential Processes (CSP). single thread of control . autonomous . encapsulated . named . static . synchronous . reliable . 2.1 The Process Notion . 2.2 Defining and Instantiating Processes. Precedence Relations. Implicit Process Creation . Dynamic Creation With fork And join. 2.3 Basic Process Interactions. Competition: The Critical Section Problem . A program that controls the execution of application programs. An interface between applications and hardware. 2. Operating System Objectives. Convenience. Makes the computer more convenient to use. Efficiency. CSSE 332. Operating Systems. Rose-Hulman Institute of Technology. Intro to Course. Survey of Operating Systems concepts. Several chapters in Text (12). Lots of programming in C. Programming lab each week. Processes. Operating Systems Control Tables. Process image. Consists of . The program(one or more files) . Data . System stack . Process Control Block/Process descriptor. The PCB has 3 types of information. Dr . Damitha. . Karunaratna. . University of Colombo school of computing. Topics to discuss. What is an operating system(OS)?. Main objectives of an OS. Main functions of an OS. Evolution of OS.. Silberschatz. et all, 2009. Modern Operating Systems by . Tannenbaum. and . Bos. 2015. Operating Systems by Nutt 2004. Motivation. Distributed system . is collection of loosely coupled processors interconnected by a communications network. History and Hardware. 1: Operating Systems Overview. 2. This is the simplest animal with a “brain”. Caenorphabditis elegans. C. elegans.  is one of the simplest organisms with a nervous system. This system comprises 302 neurons the pattern of which has been comprehensively mapped, in what is known as a connectome. . Functions of Operating Systems. Oversee operation of computer. Store and retrieve files. Schedule programs for execution. Coordinate the execution of . programs. Provide an interface to the user to access machine functions. Chapter 3 Operating Systems Concepts 1 A Computer Model An operating system has to deal with the fact that a computer is made up of a CPU, random access memory (RAM), input/output (I/O) devices, and long-term storage. 3. Higher-Level Synchronization 3.1 Shared Memory Methods Monitors Protected Types 3.2 Distributed Synchronization/Comm. Message-Based Communication Procedure-Based Communication Distributed Mutual Exclusion Logistics. Instructor: Guoliang Jin. TA: . Feifei. Wang. Grader: TBA. https://moodle1516-courses.wolfware.ncsu.edu/course/view.php?id=3469. You?. First . OS course?. Experience in C programming?. Read OS papers before?.