'Parent process' presentation slideshows

CIS 90 - Lesson 10

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Process Description and Control

Process Description and Control. Chapter 3 All multiprogramming OS are built around the concept of processes. A process is also called a task or a job. Roadmap. How are processes represented and controlled by the OS?

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Lecture 4: Processes

Lecture 4: Processes. Operating System Spring 2007 Chapter 4 of textbook. Major Requirements of an Operating System . Interleave the execution of several processes to maximize processor utilization while providing reasonable response time

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chapter 2

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UNIX Processes

UNIX Processes. The UNIX Process What is a Process Representing a process States of a process Creating and managing processes fork() wait() getpid() exit() etc. Files in UNIX Directories and Paths User vs. System Mode UNIX I/O primitives A simple example

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Operating Systems {week 05}

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Operating Systems COMP 4850/CISG 5550

Operating Systems COMP 4850/CISG 5550. Processes Introduction to Threads Dr. James Money. Processes. A process is the abstraction of a running program. This includes the code, associated memory, among other items.

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Unix Comp-145

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A Seven-State Process Model

A Seven-State Process Model. CPU Switch From Process to Process. Silberschatz, Galvin, and Gagne ?1999. Steps for Full Process Switch. Save context of CPU including program counter and other registers Update the PCB of the running process with its new state and other info

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Introduction

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Operating Systems

Operating Systems. Agenda of Today. Review PCB Contents of PCB Context Switching Schedulers Types of Schedulers Operations on Processes Creation of a process Termination of a process. Process Control Block (PCB). Information associated with each process. Process state Program counter

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Process Related System Calls

Process Related System Calls. By Neha Hulkoti & Kavya Bhat. System calls. The UNIX system provides several system calls to create and end program, to send and receive software interrupts, to allocate memory, and to do other useful jobs for a process.

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Lecture Topics: 11/3

Lecture Topics: 11/3. Address spaces Memory protection Creating a process NT style Unix style. Address Spaces. Reserved. An address space is the range of addresses that a process may use The legal address space is the range of addresses that a process may use right now. Text.

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Motivation

Motivation. On UNIX, each computing task is represented by a process . UNIX runs many tasks seemingly at the same time One can run multiple commands and carry out multiple tasks at a time E ach process receives a little slice of CPU time by the scheduler. What is a process ?.

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UNIX PROCESSES

UNIX PROCESSES. What is a Unix Process. An entity that executes a given piece of code has its own execution stack its own set of memory pages its own file descriptors table a unique process ID. Re-entrancy.

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?? ??. ???? ??? 961428 ??? 961556 ???. The compitition. ?????????????????????????? (CAD) ??????? ????? ????? ?? ??? Multi-Core ATPG. ATPG. acronym for both A utomatic T est P attern G eneration and A utomatic T est P attern G enerator

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Controlling concurrency

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Programming Project #2 Distributed Game of Life

Programming Project #2 Distributed Game of Life. Due Tuesday, April 10. Assignment. Implement a distributed version of the Game of Life based on the concurrent version of Project #1. Objective. Build a non-trivial distributed application

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UNIX Fork/Exec Example

UNIX Fork/Exec Example. int pid = fork(); if ( pid == 0) { exec("foo"); } else { waitpid ( pid , &status, options); };. Child process. Parent process. Windows Process Creation. BOOL CreateProcess ( LPCTSTR lpApplicationName , LPTSTR lpCommandLine ,

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