Chapter06

Concurrency: Deadlock and Starvation Chapter 6

Deadlock ,[object Object],[object Object],[object Object]

Reusable Resources ,[object Object],[object Object],[object Object],[object Object]

Another Example of Deadlock ,[object Object],[object Object],P1 . . . . . . Request 80 Kbytes; Request 60 Kbytes; P2 . . . . . . Request 70 Kbytes; Request 80 Kbytes;

Consumable Resources ,[object Object],[object Object],[object Object],[object Object]

Example of Deadlock ,[object Object],P1 . . . . . . Receive(P2); Send(P2, M1); P2 . . . . . . Receive(P1); Send(P1, M2);

Resource Allocation Graphs ,[object Object]

Conditions for Deadlock ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Conditions for Deadlock ,[object Object],[object Object]

Possibility of Deadlock ,[object Object],[object Object],[object Object]

Existence of Deadlock ,[object Object],[object Object],[object Object],[object Object]

Deadlock Prevention ,[object Object],[object Object],[object Object],[object Object]

Deadlock Prevention ,[object Object],[object Object],[object Object],[object Object],[object Object]

Deadlock Avoidance ,[object Object],[object Object]

Two Approaches to Deadlock Avoidance ,[object Object],[object Object]

Resource Allocation Denial ,[object Object],[object Object],[object Object],[object Object]

Determination of a Safe State Initial State

Determination of a Safe State P2 Runs to Completion

Determination of an Unsafe State

Deadlock Avoidance ,[object Object],[object Object],[object Object],[object Object]

Strategies once Deadlock Detected ,[object Object],[object Object],[object Object],[object Object],[object Object]

Selection Criteria Deadlocked Processes ,[object Object],[object Object],[object Object],[object Object],[object Object]

Strengths and Weaknesses of the Strategies

UNIX Concurrency Mechanisms ,[object Object],[object Object],[object Object],[object Object],[object Object]

Linux Kernel Concurrency Mechanisms ,[object Object],[object Object]

Linux Kernel Concurrency Mechanisms

Solaris Thread Synchronization Primitives ,[object Object],[object Object],[object Object],[object Object]

Chapter06

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Chapter06