PPT-Deadlock

cs550 Operating Systems David Monismith Deadlock Four requirements for deadlock Hold and wait process holds resource while waiting for more resources Mutual Exclusion resource cant be shared. Chapter 7: Deadlocks. The Deadlock Problem. System Model. Deadlock Characterization. Methods for Handling Deadlocks. Deadlock Prevention. Deadlock Avoidance. Deadlock Detection . Recovery from Deadlock . 1. 6. Deadlocks. 6.1 Deadlocks with Reusable and Consumable. . Resources. 6.2 Approaches to the Deadlock Problem . 6.3 A System Model . Resource Graphs . State Transitions. Deadlock States and Safe States . Tore Larsen. With slides from . T. Plagemann, C. . . Griwodz. , K. Li,. A. . Tanenbaum. and M. van Steen. Resources. Resource allocation is a central OS concern. Examples . of computer resources. CPU. DEADLOCKS. Manju Muralidharan . Priya. Objective. At the end of this presentation, you will know:. What is a Deadlock?. Preventing and Avoiding Deadlocks. Detecting Deadlocks. Recovery Schemes. 2. CS 561 Deadlocks. DEADLOCKS. To be discussed…. Definition of deadlock. Example of deadlock. Resource allocation graph. Strategies to handle deadlock. - . Deadlock Prevention. - . Deadlock Avoidance. - . Distributed Process Management. Patricia Roy. Manatee Community College, Venice, FL. ©2008, Prentice Hall. Operating Systems:. Internals and Design Principles, 6/E. William Stallings. Process Migration. Misra Haas Deadlock Detection Algorithm. By . Purva. . Gawde. For Advanced Operating Systems. Instructor: Mikhail . Nesterenko. Overview. Introduction. Objective. Experimental setup. Results. Conclusion. Chapter 6. 2. Outline. Principles of Deadlock. Introduction and conditions for deadlock. Deadlock prevention. Deadlock Avoidance. Deadlock detection. An Integrated deadlock strategy. Concurrency Mechanisms in UNIX, Linux, Solaris and Windows. Dan C. Marinescu. Office: HEC 304. Office hours: M-. Wd. 11:30 - 12:30 . A. M. Last time: . CPU Scheduling. . Process synchronization. Today. Process . synchronization. Transactions. Locks. Deadlocks. Scheduling. Damian Gordon. Process Scheduling Policies. What are good policies to schedule processes?. Process Scheduling Policies. What are good policies to schedule processes?. Maximum Throughput. Minimize Response Time. Reading Assignment. T. M. Pinkston, . “. Deadlock Characterization and Resolution in Interconnection Networks,. ”. Chapter 13 in . Deadlock Resolution in Computer Integrated Systems. , CRC Press 2004. In order to talk about deadlocks in a system, it’s helpful to have a model of the system. A . system consists of a set of resources. The resources can be grouped into types. Processes compete to have (unique) access to instances of the types. IEEE TC. , May 1987. F. . Silla. , and J. . Duato. , “Improving the Efficiency of Adaptive Routing in Networks with Irregular Topology,” . HIPC. 1997. J. . Duato. “A New Theory of Deadlock-Free Adaptive Routing in Wormhole Networks,” . “A set of processes is deadlocked if each process in the set is waiting for an event that only another process in the set can cause.”. Detection. “Is this system deadlocked, and if so, which processes are involved?”.