Question

In your own words, list and briefly describe each of the four necessary conditions for a deadlock.

Answer 1

The four neccesary conditions for deadlock are :

1. Mutual exclusion : It basically means no more than one process should be able to use the resources at the same time.

2. Hold and Wait : It means a process is already having atleast one resource and also waiting for another resource.

3. No preemption : It means that a resource cannot be taken from a process unless it voluntarily gives up the resource.

4. Ciruclar wait : It means that the processes are waiting for each other in the circular form , a loop is formed where each process is waiting for the resource that is with the next process in the loop thus forming a circular wait.

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