3.4.2. Mechanisms for Controlling Concurrency
Exercise 3.49

Scenario where the deadlock-avoidance mechanism does not work

Give a scenario where the deadlock-avoidance mechanism described above does not work. (Hint: In the exchange problem, each process knows in advance which accounts it will need to get access to. Consider a situation where a process must get access to some shared resources before it can know which additional shared resources it will require.)

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