Self Doubt

Question

Can Safe state in DeadLock Avoidance Mechanism always guarantee No DeadLock??

Answer 1

From a safe state no deadlock is possible as long as the state does not change to an “unsafe state”. So, if the deadlock avoidance mechanism can ensure that a state always remains “safe”, then no deadlock will happen. But if from a safe state the system reaches an unsafe state, then deadlock is possible.

Comments

@raja11sep You have good aptitude in picking the correct answer - this will be very useful in GATE.

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@gatecse Sir Thank you so much for calrifying the doubt.

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@gatecse Thanks, Sir. 🙏

Answer 2

If already in deadlock, surely unsafe state.

If in unsafe state, some need of resource may go down with time and deadlock may never occur. (deadlock has not yet occured, may/maynot occur in future)

If in safe state and resources handled improperly, may lead to deadlock. (deadlock has not yet occured, may/maynot occur in future)

Comments

how in safe state , it may lead to deadlock?

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analyse this question, you’ll come to know how : https://gateoverflow.in/388951/gate-cse-2017-set-2-question-33-msq-version