Operating Systems - David Vernon

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Processes The Process Model – All software is organized in (sequential) processes » executable code, stack, PC, registers, variables, … – Each process has its own virtual CPU – At any one instant, only one process is actually running (in a single CPU computer) – The CPU switches between processes, according to some scheduling algorithm Copyright © 2007 David Vernon (www.vernon.eu)
Processes Single program counter Four progam counters A B Process Switch C A B C D D Physical view of Multiprogramming Logical view of Multiprogramming Copyright © 2007 David Vernon (www.vernon.eu)
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Operating Systems David Vernon Copy
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Course Content Historical overview
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Course Content Device management -
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Course Content Networking issues -
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Course Textbook “Modern Operating
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Assessment of Performance First exa
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The Need for Operating Systems Why
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The Need for Operating Systems Comp
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The Need for Operating Systems Exam
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Load B DR ← M(AR) A B C 11111111
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Load B Increment PC A B C 11111111
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Load B AR ← DR(address) A B C 111
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Load B AC ← DR A B 11111111 01001
Page 33 and 34: The Need for Operating Systems Mach
Page 35 and 36: The Need for Operating Systems Comp
Page 37 and 38: What is an Operating System There a
Page 39 and 40: What is an Operating System OS as a
Page 41 and 42: History of Operating Systems First
Page 43 and 44: History of Operating Systems Second
Page 45 and 46: History of Operating Systems Third
Page 47 and 48: History of Operating Systems Third
Page 49 and 50: History of Operating Systems Fourth
Page 51 and 52: Operating System Concepts System ca
Page 53 and 54: Operating System Concepts Processes
Page 59 and 60: Operating System Concepts Files - O
Page 61 and 62: Operating System Concepts Copyright
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Page 65 and 66: Operating System Concepts Files - O
Page 67 and 68: Operating System Concepts System Ca
Page 69 and 70: Operating System Concepts The Shell
Page 71 and 72: Operating System Structure Monolith
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Page 75 and 76: Operating System Structure Virtual
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Page 79 and 80: Operating System Structure Client-S
Page 81 and 82: Operating System Structure Client-S
Page 83: Processes All modern computer syste
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Page 89 and 90: Processes Process Hierarchies - pro
Page 91 and 92: Processes Running 1 Blocked 4 3 2 R
Page 93 and 94: Processes Device I/O … the differ
Page 95 and 96: Processes Interrupts and device I/
Page 97 and 98: Processes InterProcess Communicatio
Page 99 and 100: Processes Process A Spooler directo
Page 101 and 102: Processes Process A Process B Print
Page 113 and 114: Processes /* process 0 */ main () {
Page 117 and 118: while (turn == process && intereste
Page 119 and 120: while (turn == process && intereste
Page 131 and 132: Processes void consumer(void) { int
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Processes InterProcess Communicatio
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Processes #include “prototypes.h
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Processes void consumer(void) { int
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Processes void writer(void) { while
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Processes Process Scheduling - Crit
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Processes Process Scheduling - Roun
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Processes Process Scheduling - Prio
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Processes Process Scheduling - ‘S
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Processes Process Scheduling - Two
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Memory Management The part of the o
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Memory Management Memory management
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Memory Management Swapping - memory
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Memory Management Virtual Memory -
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Memory Management Disk Page 1 Proce
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Memory Management Disk Page 1 Proce
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Memory Management Virtual Address S
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Memory Management Second-level page
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Memory Management Segmentation - Th
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Memory Management Segmentation - To
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Memory Management Segmentation » O
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Memory Management Segmentation - It
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