'User process' diaporamas de présentation

Chapter 8 Virtual Memory

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Quality Assurance in ISD and Maintenance Projects

Quality Assurance in ISD and Maintenance Projects. How do you do QA when the time it takes is longer that the time to do the work?. Tom Gilchrist , CQA, CSQE tomg@halcyon.com. Disclaimers. The views and opinions expressed in this presentation are not necessarily those of my employer.

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Process Description and Control

Process Description and Control. Chapter 3 All multiprogramming OS are build around the concept of processes A process is sometimes called a task. OS Requirements for Processes.

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Chapter 8: Memory Management

Chapter 8: Memory Management. A program may not be executed until it is; associated with a process brought into memory In allow multi-programming, the OS must be able to allocate memory to each process Several processes at once

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Inter-Process Communication

Inter-Process Communication. Fred Kuhns (fredk@arl.wustl.edu, http://www.arl.wustl.edu/~fredk) Applied Research Laboratory Department of Computer Science and Engineering Washington University in St. Louis. IPC: Cooperating Processes.

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Verifying Cryptographic Protocols in the Pi Calculus

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Exceptional Control Flow: Exceptions and Processes 15-213 / 18-213: Introduction to Computer Systems 13 th Lecture, Oc

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Exceptions, Interrupts, and the OS

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The Client-Server Model

The Client-Server Model. Chapter 20. Key concepts in chapter 20. System processes Micro-kernel operating systems Client-server model Network operating systems Distributed operating systems. Process communication. Processes use three different modes of communication

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Threads, Events, and Scheduling

Threads, Events, and Scheduling. Andy Wang COP 5611 Advanced Operating Systems. Basic Concept of Threads/Processes. Thread: A sequential execution stream Address space: Chunks of memory and everything needed to run a program Process: An address space + thread(s) Two types of threads

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Memory Protection: Kernel and User Address Spaces

Memory Protection: Kernel and User Address Spaces. Background Address binding How memory protection is achieved. . Background and concepts. Raw memory A large array of words or bytes Each word/byte has its own address.

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The Transport Layer

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What is an operating system?

What is an operating system?. Tool to make programmer's job easy Resource allocator Must be fair; not partial to any process Must discriminate between different class of jobswith different service requirements Do the above efficiently Control program

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CS 311 - Lecture 16 Outline

CS 311 - Lecture 16 Outline. Inter-process Communication (IPC) Pipes Signals. Inter-Process Communication (IPC). IPC methods in UNIX Intermediate/temporary files (often together with I/O redirection) Pipes - IPC between two processes forked by a common ancestor process (unnamed)

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CMSC 414 Computer and Network Security Lecture 10

CMSC 414 Computer and Network Security Lecture 10. Jonathan Katz. HW review: private-key encryption. What is the definition of an encryption scheme? Is a ciphertext that is longer than the plaintext allowed? How does CTR mode work? What is the ciphertext?

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Memory Management

UNIVERSITY of WISCONSIN-MADISON Computer Sciences Department. Memory Management. CS 537 Introduction to Operating Systems. Andrea C. Arpaci-Dusseau Remzi H. Arpaci-Dusseau. Questions answered in this lecture: How do processes share memory? What is static relocation?

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Exceptional Control Flow

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Linux Kernel Module Programming

Linux Kernel Module Programming. Jason Barto September 4, 2003. Agenda. Introduction Review Standard Functions Write Module v0.1 Compiling Modules Handling Runtime Parameters More Kernel Macros Write Module v0.2 Close and Further Readings. Introduction.

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CSE5306 Distributed Systems

CSE5306 Distributed Systems. Mohan Kumar Operating System Support: Week 4. Operating System components. Network operating system Distributed operating system. OS layer Processes and threads Communicatio n and invocation. Operating System Layer. Applications, services. Middleware.

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Pipes

Pipes. A pipe provides a one-way flow of data example: who | sort| lpr output of who is input to sort output of sort is input to lpr The difference between a file and a pipe: pipe is a data structure in the kernel.

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