Consider the following ways of handling deadlock: (1) Bankers algorithm, (2) Detect deadlock and kill thread, releasing
Question:
(1) Banker’s algorithm,
(2) Detect deadlock and kill thread, releasing all resources,
(3) Reserve all resources in advance,
(4) Restart thread and release all resources if thread needs to wait,
(5) Resource ordering, and
(6) Detect deadlock and roll back thread’s actions.
a. One criterion to use in evaluating different approaches to deadlock is which approach permits the greatest concurrency. In other words, which approach allows the most threads to make progress without waiting when there is no deadlock? Give a rank order from 1 to 6 for each of the ways of handling deadlock just listed, where 1 allows the greatest degree of concurrency. Comment on your ordering.
b. Another criterion is efficiency; in other words, which requires the least processor overhead. Rank order the approaches from 1 to 6, with 1 being the most efficient, assuming that deadlock is a very rare event. Comment on your ordering. Does your ordering change if deadlocks occur frequently?
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Related Book For
Operating Systems Internals and Design Principles
ISBN: 978-0133805918
8th edition
Authors: William Stallings
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