Bài giảng hệ điều hành nâng cao chapter 20 multimedia systems

... Chapter 20: Multimedia Systems ■ What is Multimedia? ■ Compression ■ Requirements of Multimedia Kernels ■ CPU Scheduling ■ Disk Scheduling ... Edition 20. 7 Silberschatz, Galvin and Gagne 200 9 Multimedia Systems Characteristics ■ Multimedia files can be quite large ■ Continuous media data may require very high data rates ■ Multimedia ... Edition 20. 14 Silberschatz, Galvin and Gagne 200 9 Resources on a file server th Operating System Concepts – Edition 20. 15 Silberschatz, Galvin and Gagne 200 9 CPU Scheduling ■ Multimedia systems...

Bài giảng hệ điều hành nâng cao chapter 3 processes

... Chapter 3: Processes Process Concept Process Scheduling Operations on Processes Interprocess Communication Examples of IPC Systems ... scheduling queues of processes Job queue – set of all processes in the system Ready queue – set of all processes residing in main memory, ready and waiting to execute Device queues – set of processes waiting ... Concepts – 8th Edition 3. 19 Silberschatz, Galvin and Gagne ©2009 Process Creation Parent process create children processes, which, in turn create other processes, forming a tree of processes Generally,...

Bài giảng hệ điều hành nâng cao chapter 4 threads

... user-level threads library ■ Three primary thread libraries: ● POSIX Pthreads ● Win32 threads ● Java threads Operating System Concepts – th Edition 4. 11 Silberschatz, Galvin and Gagne ©2009 Kernel Threads ... Windows XP Threads ■ Linux Thread Operating System Concepts – th Edition 4. 40 Silberschatz, Galvin and Gagne ©2009 Windows XP Threads Data Structures Operating System Concepts – th Edition 4. 41 Silberschatz, ... System Concepts – th Edition 4. 23 Silberschatz, Galvin and Gagne ©2009 Pthreads Example Operating System Concepts – th Edition 4. 24 Silberschatz, Galvin and Gagne ©2009 Pthreads Example (Cont.) Operating...

Bài giảng hệ điều hành nâng cao chapter 14 protection

... Chapter 14: Protection Goals of Protection Principles of Protection Domain of Protection Access Matrix Implementation of Access Matrix ... principles and techniques of protection Operating System Concepts – 8th Edition 14. 25 Silberschatz, Galvin and Gagne ©2009 Language-Based Protection Specification of protection in a programming ... System Concepts – 8th Edition 14. 26 Silberschatz, Galvin and Gagne ©2009 Protection in Java Protection is handled by the Java Virtual Machine (JVM) A class is assigned a protection domain when it...

Bài giảng hệ điều hành nâng cao chapter 22 windows XP

... Chapter 22: Windows XP History Design Principles System Components Environmental Subsystems File system Networking Programmer Interface Operating System Concepts – 8th Edition 22. 2 Silberschatz, ... and Gagne ©2009 Objectives To explore the principles upon which Windows XP is designed and the specific components involved in the system To understand how Windows XP can run programs designed ... other operating systems To provide a detailed explanation of the Windows XP file system To illustrate the networking protocols supported in Windows XP To cover the interface available to system...

Bài giảng hệ điều hành nâng cao chapter 1 introduction

... interrupt Operating System Concepts – th Edition 1. 14 Silberschatz, Galvin and Gagne ©2009 Interrupt Timeline Operating System Concepts – th Edition 1. 15 Silberschatz, Galvin and Gagne ©2009 I/O Structure ... execution of CPUs and devices competing for memory cycles Operating System Concepts – th Edition 1. 11 Silberschatz, Galvin and Gagne ©2009 Computer-System Operation ■ I/O devices and the CPU can ... Chapter 1: Introduction ■ What Operating Systems Do ■ Computer-System Organization ■ Computer-System...

Bài giảng hệ điều hành nâng cao chapter 2 operating system structures

... Chapter 2: Operating- System Structures ■ Operating System Services ■ User Operating System Interface ■ System Calls ■ Types of System Calls ■ System Programs ■ Operating System Design ... Implementation ■ Operating System Structure ■ Virtual Machines ■ Operating System Debugging ■ Operating System Generation ■ System Boot Operating System Concepts – th Edition 2. 2 Silberschatz, ... remote devices Operating System Concepts – th Edition 2. 21 Silberschatz, Galvin and Gagne 20 09 Examples of Windows and Unix System Calls Operating System Concepts – th Edition 2. 22 Silberschatz,...

Bài giảng hệ điều hành nâng cao chapter 11 file system implementation

... Chapter 11: File System Implementation ■ File- System Structure ■ File- System Implementation ■ Directory Implementation ■ Allocation Methods ■ Free-Space ... different types of file systems ● Separates file- system generic operations from implementation details ● Implementation can be one of many file systems types, or network file system  ● ■ Implements ... Gagne ©2009 In-Memory File System Structures ■ Mount table storing file system mounts, mount points, file system types ■ The following figure illustrates the necessary file system structures provided...

Bài giảng hệ điều hành nâng cao chapter 5 CPU scheduling

... Chapter 5: CPU Scheduling ■ Basic Concepts ■ Scheduling Criteria ■ Scheduling Algorithms ■ Thread Scheduling ■ Multiple-Processor Scheduling ■ Operating Systems ... – th Edition 5. 2 Silberschatz, Galvin and Gagne ©2009 Objectives ■ To introduce CPU scheduling, which is the basis for multiprogrammed operating systems ■ To describe various CPU- scheduling algorithms ... Sequence of CPU and I/O Bursts Operating System Concepts – th Edition 5. 5 Silberschatz, Galvin and Gagne ©2009 Histogram of CPU- burst Times Operating System Concepts – th Edition 5. 6 Silberschatz,...

Bài giảng hệ điều hành nâng cao chapter 6 process synchronization

... Module 6: Process Synchronization Background The Critical-Section Problem Peterson’s Solution Synchronization Hardware Semaphores Classic Problems of Synchronization Monitors Synchronization ... – 8th Edition 6. 7 Silberschatz, Galvin and Gagne ©2009 Critical Section Problem Consider system of n processes {p0, p1, … pn-1} Each process has critical section segment of code Process may be ... System Concepts – 8th Edition 6. 36 Silberschatz, Galvin and Gagne ©2009 Monitors A high-level abstraction that provides a convenient and effective mechanism for process synchronization Abstract data...

Bài giảng hệ điều hành nâng cao chapter 12 mass storage systems

... Chapter 12: Mass- Storage Systems ■ Overview of Mass Storage Structure ■ Disk Structure ■ Disk Attachment ■ Disk Scheduling ... tertiary storage devices and the resulting effects on the uses of the devices ■ Explain the performance characteristics of mass- storage devices ■ Discuss operating-system services provided for mass storage, ... Edition 12. 48 Silberschatz, Galvin and Gagne ©2009 Hierarchical Storage Management (HSM) ■ A hierarchical storage system extends the storage hierarchy beyond primary memory and secondary storage...

Bài giảng hệ điều hành nâng cao chapter 17 distributed file systems

... Chapter 17 Distributed- File Systems Background Naming and Transparency Remote File Access Stateful versus Stateless Service File Replication An Example: AFS Operating ... methods for accessing distributed files To contrast stateful and stateless distributed file servers To show how replication of files on different machines in a distributed file system is a useful ... Andrew file system (AFS) as an example of a distributed file system Operating System Concepts – 8th Edition 17. 3 Silberschatz, Galvin and Gagne ©2009 Background Distributed file system (DFS) – a distributed...

Bài giảng hệ điều hành nâng cao chapter 13 i o systems

... time, elapsed time, timer ■ Normal resolution about 1/60 second ■ Some systems provide higher-resolution timers ■ Programmable interval timer used for timings, periodic interrupts ■ ioctl() (on ... Edition 13. 29 Silberschatz, Galvin and Gagne ©2009 I/ O Protection ■ User process may accidentally or purposefully attempt to disrupt normal operation via illegal I/ O instructions ● All I/ O instructions ... Network sockets For direct manipulation of I/ O device specific characteristics, usually an escape / back door ● Unix ioctl() call to send arbitrary bits to a device control register and data to...

Bài giảng hệ điều hành nâng cao trần hạnh nhi

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bài giảng hệ điều hành mạng nâng cao chương vii an toàn và bảo mật

... đề an toàn bảo mật mạng • Các vấn đề đảm bảo an toàn hệ thống thông tin • Các yếu tố gây an toàn liệu, hệ thống mạng • Các giải pháp đảm bảo an toàn liệu, hệ thống mạng HĐH mạng nâng cao mạ VII ... HĐH mạng nâng cao mạ VII An toàn & bảo mật bả mậ 41 Packet -filtering router/firewall HĐH mạng nâng cao mạ VII An toàn & bảo mật bả mậ 42 Application -level gateway HĐH mạng nâng cao mạ VII An toàn ... địa cầu • Tấn công mạng ngày phổ biến tăng nhanh chóng qua năm HĐH mạng nâng cao mạ VII An toàn & bảo mật bả mậ Thiệt hại dạng công HĐH mạng nâng cao mạ VII An toàn & bảo mật bả mậ Virus Related...

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