'Mutual exclusion' presentation slideshows

Concurrency: Mutual Exclusion and Synchronization

Concurrency: Mutual Exclusion and Synchronization. Chapter 5. Problems with concurrent execution. Concurrent processes (or threads) often need to share data (maintained either in shared memory or files) and resources

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ICS 143 - Principles of Operating Systems

ICS 143 - Principles of Operating Systems. Lecture 6 - Process Synchronization Prof. Nalini Venkatasubramanian nalini@ics.uci.edu. Outline. The Critical Section Problem Synchronization Hardware Semaphores Classical Problems of Synchronization Critical Regions Monitors

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Deadlock

Deadlock. ICS 240: Operating Systems Instructor: William McDaniel Albritton Information and Computer Sciences Department at Leeward Community College Original slides by Silberschatz, Galvin, and Gagne from Operating System Concepts with Java, 7th Edition with some modifications

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Processes and Threads

Processes and Threads. 2.1 Processes 2.2 Threads 2.3 Interprocess communication 2.4 Classical IPC problems 2.5 Scheduling. Chapter 2. Processes The Process Model. Multiprogramming of four programs Conceptual model of 4 independent, sequential processes

767 views • 55 slides

THIRD PART Algorithms for Concurrent Distributed Systems: The Mutual Exclusion problem

THIRD PART Algorithms for Concurrent Distributed Systems: The Mutual Exclusion problem. Concurrent Distributed Systems. Changes to the model from the MPS:

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CS5412: How Much Ordering?

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Xinu Semaphores

Xinu Semaphores. Concurrency. An important and fundamental feature in modern operating systems is concurrent execution of processes/threads. This feature is essential for the realization of multiprogramming, multiprocessing, distributed systems, and client-server model of computation.

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Network Weather Service

548 views • 38 slides

15-440 Distributed Systems

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Synchronized Hyperedge Replacement for Heterogeneous Systems

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CyPhyHouse

CyPhyHouse. A framework for implementation, simulation, verification and deployment of distributed robotics applications. S ayan Mitra , Geir Dullerud Ritwika Ghosh , Joao Paulo Jansch -Porto, Peter Du, Amelia Gosse. CyPhyHouse. University of Illinois. CyPhyHouse System Architecture.

614 views • 34 slides

Deadlocks: Part II Detection and Recovery

Deadlocks: Part II Detection and Recovery. Dining Philophers Problem. Five chopsticks/Five philosophers (really cheap restaurant) Free-for all: Philosopher will grab any one they can Need two chopsticks to eat What if all grab at same time? Deadlock! How to prevent deadlock?

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Concurrency Control

Concurrency Control. Thomas Hildebrandt. Agenda. concurrency control protocols: challenges pessimistic concurrency control Locks (strict) two-phase locking Deadlocks prevention and detection distributed deadlocks Increasing concurrency

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Chapter 7 - Resource Access Protocols (Critical Sections)

Chapter 7 - Resource Access Protocols (Critical Sections). Protocols: No Preemptions During Critical Sections Once a job enters a critical section, it cannot be preempted until it finishes the critical section Priority Inheritance Protocol (for static scheduled systems)

839 views • 25 slides

CS 345

CS 345. Tip #11: Saturated Addition. How do you add two numbers without overflow? Normally, when an addition overflows, it just drops back down to 0 and you're left with however much is left over after the overflow.

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Deadlocks - I

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Chapter 7. Sequential Logic Design Principles

Chapter 7. Sequential Logic Design Principles. Types of circuits Combinational (logic) circuits Its outputs depend only on its current inputs Sequential (logic) circuits Its outputs depends not only on its current inputs, but also on the past sequence of inputs. State & State variables

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Correct Concurrency with Chalice

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Concurrent Programming (Critical Regions, Monitors, and Threads)

Concurrent Programming (Critical Regions, Monitors, and Threads). CSE 380 Lecture Note 6 Insup Lee. Concurrent Programming. An OS consists of a large number of programs that execute asynchronously and cooperate.

472 views • 11 slides