Operating Systems - David Vernon

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Processes InterProcess Communication IPC – Sleep and Wakeup » The Producer-Consumer Problem » (also known as the bounded buffer problem) » Two processes share a fixed-size buffer producer process put information in consumer process takes information out » Problem for producer when buffer is full » Solution: producer goes to sleep and is awakened by consumer when consumer has removed some items Copyright © 2007 David Vernon (www.vernon.eu)
Processes InterProcess Communication IPC – Sleep and Wakeup » Problem for consumer when buffer is empty » Solution: consumer goes to sleep and is awakened by producer when producer has added some items » Use a shared variable count to identify the number of items in the buffer (max = N) » Both producer and consumer need to check count to see what action to take » And we can get the familiar race conditions 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
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The Need for Operating Systems Mach
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What is an Operating System There a
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What is an Operating System OS as a
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History of Operating Systems First
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History of Operating Systems Second
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History of Operating Systems Third
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History of Operating Systems Third
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History of Operating Systems Fourth
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Operating System Concepts System ca
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Operating System Concepts Processes
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Operating System Concepts Files - O
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Operating System Concepts Copyright
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Operating System Concepts Files -Pr
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Operating System Concepts Files - O
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Operating System Concepts System Ca
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Operating System Concepts The Shell
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Operating System Structure Monolith
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Operating System Structure Monolith
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Operating System Structure Virtual
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Page 83 and 84: Processes All modern computer syste
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Page 87 and 88: Processes Because the OS schedules
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Page 91 and 92: Processes Running 1 Blocked 4 3 2 R
Page 93 and 94: Processes Device I/O … the differ
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Page 113 and 114: Processes /* process 0 */ main () {
Page 117 and 118: while (turn == process && intereste
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Page 141 and 142: Processes #include “prototypes.h
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Page 163 and 164: Processes Process Scheduling - Crit
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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 » O
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Memory Management Segmentation - It
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