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Process Creation And Termination-Operating Systems-Lecture Notes

Lecture Notes, Operating System

Post: August 6th, 2012
Description
Operating Systems is necessary course in Computer Science. Its about threading, process scheduling, deadlocks, memory management etc. This lecture includes: Operating, Process, System, Creation, Operations, Managment, Linux, Unix, Execution, Children, Dynamically
Operating Systems is necessary course in Computer Science. Its about threading, process scheduling, deadlocks, memory management etc. This lecture includes: Operating, Process, System, Creation, Operations, Managment, Linux, Unix, Execution, Children, Dynamically
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Contents
Operating Systems [CS-604] Lecture No. 6 Operating Systems Lecture No. 6 Reading Material ƒ ƒ Operating Systems Concepts, Chapter 4 UNIX/Linux manual pages for the fork()system call Summary ƒ ƒ ƒ Process creation and termination Process management in UNIX/Linux— system calls: fork, exec, wait, exit Sample codes Operations on Processes The processes in the system execute concurrently and they must be created and deleted dynamically thus the operating system must provide the mechanism for the creation and deletion of processes. Process Creation A process may create several new processes via a create-process system call during the course of its execution. The creating process is called a parent process while the new processes are called the children of that process. Each of these new processes may in turn create other processes, forming a tree of processes. Figure 6.1 shows partially the process tree in a UNIX/Linux system. Figure 6.1 Process tree in UNIX/Linux In general, a ..

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