Operating System Concepts - Chapter 6: Process Synchronization potx
Operating System Concepts - Chapter 6: Process Synchronization potx
... as:x-count++;if (next-count > 0)signal(next);elsesignal(mutex);wait(x-sem);x-count ;6.10Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 8, 2005 Synchronization ... x.signal can be implemented as:if (x-count > 0) {next-count++;signal(x-sem);wait(next);next-count ;}6.8Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 8, ... and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 8, 2005ReadersReaders - - Writers ProblemWriters Problem A data set is shared among a number of concurrent processesz Readers...
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Chapter 6 Process synchronization
... Gagne ©2005 Operating System Concepts – 7th Edition, Feb 8, 2005 Synchronization Hardware Synchronization HardwareMany systems provide hardware support for critical section codeUniprocessors ... Galvin and Gagne ©2005 Operating System Concepts – 7th Edition, Feb 8, 2005Solution to Critical-Section ProblemSolution to Critical-Section Problem1. Mutual Exclusion - If process Pi is executing ... can be implemented as:x-count++;if (next-count > 0)signal(next);elsesignal(mutex);wait(x-sem);x-count ;6.30Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7th Edition,...
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Operating System Concepts - Chapter 1: Introduction.Chapter 1: IntroductionWhat Operating Systems Do Computer-System pot
... 12, 2005 Chapter 1: Introduction Chapter 1: Introduction What Operating Systems Do Computer -System Organization Computer -System Architecture Operating- System Structure Operating- System ... manner.1.11Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 12, 2005ComputerComputer - - System Operation System Operation I/O devices and the CPU can execute ... driven.1.30Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 12, 2005 Process Management Activities Process Management ActivitiesThe operating system is responsible for the following...
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Operating System Concepts - Chapter 2: Operating-System Structures doc
... of Chapter 2End of Chapter 22.4Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 14, 2005 Operating System Services Operating System Services One set of operating- system ... execution2.8Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 14, 2005User Operating System Interface User Operating System Interface - - GUIGUI User-friendly desktop metaphor ... and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 14, 2005Layered Operating System Layered Operating System 2.24Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition,...
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Operating System Concepts - Chapter 3: Processes ppt
... ©2005 Operating System Concepts - 7thEdition, Feb 7, 2006 Process Creation Process Creation Parent process create children processes, which, in turn create other processes, forming a tree of processes ... and Gagne ©2005 Operating System Concepts - 7thEdition, Feb 7, 2006 Process in Memory Process in Memory3.39Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7thEdition, Feb ... System Concepts - 7thEdition, Feb 7, 2006CPU Switch From Process to Process CPU Switch From Process to Process 3.25Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7thEdition,...
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Operating System Concepts - Chapter 4: Threads pot
... and Gagne ©2005 Operating System Concepts – 7thedition, Jan 23, 2005ManyMany - - toto - - One ModelOne Model4.15Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thedition, ... 2005TwoTwo - - level Modellevel Model4.8Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thedition, Jan 23, 2005ManyMany - - toto - - OneOne Many user-level threads ... and Gagne ©2005 Operating System Concepts – 7thedition, Jan 23, 2005ManyMany - - toto - - Many ModelMany Model4.10Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thedition,...
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Operating System Concepts - Chapter 5: CPU Scheduling pdf
... Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 2, 2005ShortestShortest - - JobJob - - First (SJF) SchedulingFirst (SJF) Scheduling Associate with each process the length ... effect short process behind long process P1P3P2633005.2Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 2, 2005 Chapter 5: CPU Scheduling Chapter 5: CPU ... create(&tid[i],&attr,runner,NULL);5.29Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 2, 2005RealReal - - Time SchedulingTime Scheduling Hard real-time systems – required to complete a critical...
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Operating System Concepts - Chapter 7: Deadlocks pdf
... 2005ResourceResource - - Allocation Graph and WaitAllocation Graph and Wait - - for Graphfor GraphResource-Allocation Graph Corresponding wait-for graph Chapter 7: Deadlocks Chapter 7: Deadlocks ... ©2005 Operating System Concepts - 7thEdition, Feb 14, 2005Graph With A Cycle But No DeadlockGraph With A Cycle But No Deadlock7.20Silberschatz, Galvin and Gagne ©2005 Operating System Concepts ... P4.7.19Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7thEdition, Feb 14, 2005Basic FactsBasic Facts If a system is in safe state ⇒ no deadlocks. If a system is in unsafe state ⇒ possibility...
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Operating System Concepts - Chapter 8: Main Memory doc
... partitions (hole)OS process 5 process 8 process 2OS process 5 process 2OS process 5 process 2OS process 5 process 9 process 2 process 9 process 10 Chapter 8: Main Memory Chapter 8: Main Memory8.11Silberschatz, ... Gagne ©2005 Operating System Concepts – 7thEdition, Feb 22, 2005Paging ExamplePaging Example32-byte memory and 4-byte pages8.18Silberschatz, Galvin and Gagne ©2005 Operating System Concepts ... process to provide address-space protection for that process 8.38Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 22, 2005AddressAddress - - Translation SchemeTranslation...
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Operating System Concepts - Chapter 12: Mass-Storage Systems doc
... Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 1, 2005CC - - LOOK (Cont.)LOOK (Cont.)12.40Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, ... redundancy.12.2Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 1, 2005 Chapter 12: Mass Chapter 12: Mass - - Storage SystemsStorage Systems Overview of Mass Storage Structure ... written.12.20Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 1, 2005CC - - LOOKLOOK Version of C-SCAN Arm only goes as far as the last request in each...
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