Operating Systems - David Vernon

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Processes InterProcess Communication IPC – In the following we will study 5 approaches for achieving mutual exclusion: » Mutual exclusion with Busy Waiting » Sleep and Wakeup » Semaphores » Monitors » Message passing – In fact, all are theoretically equivalent Copyright © 2007 David Vernon (www.vernon.eu)
Processes InterProcess Communication IPC – Mutual Exclusion with Busy Waiting » Technique 1: Disabling interrupts Process scheduling only happens on clock or other interrupts So process might disable interrupts upon entering a critical region And re-enable them on exiting But it’s not a good idea to allow user processes the power to disable interrupts (what if they fail to re-enable them …) Also, Copyright won’t © 2007 work David Vernon in (www.vernon.eu) a multi-CPU system
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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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Processes void consumer(void) { int
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Processes InterProcess Communicatio
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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 - 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 » O
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Memory Management Segmentation - It
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