TAILIEUCHUNG - Lecture Operating systems: A concept-based approach (2/e): Chapter 11 - Dhananjay M. Dhamdhere

Chapter 11 - Deadlocks. This chapter discusses how deadlocks can arise and how an OS performs deadlock handling to ensure an absence of deadlocks, either through detection and resolution of deadlocks, or through resource allocation policies that perform deadlock prevention or deadlock avoidance. | PROPRIETARY MATERIAL. © 2007 The McGraw-Hill Companies, Inc. All rights reserved. No part of this PowerPoint slide may be displayed, reproduced or distributed in any form or by any means, without the prior written permission of the publisher, or used beyond the limited distribution to teachers and educators permitted by McGraw-Hill for their individual course preparation. If you are a student using this PowerPoint slide, you are using it without permission. Deadlocks A deadlock is a situation in which a set of processes face indefinite waits A deadlock results in reduction of concurrency and parallelism Both response times to applications and system performance suffer Definition A deadlock involving a set of processes D is a situation in which Every process Pi in D is blocked on some event ei Event ei can be caused only by actions of some process(es) in D Deadlocks Various kinds of deadlocks can arise in an OS, ., Synchronization deadlocks Processes wait for one another to perform

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• Operating systems
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