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Consider the following information about resources in a system: There are two classes of resources labelled R1 and R2. There are two instances of each
Consider the following information about resources in a system:
- There are two classes of resources labelled R1 and R2.
- There are two instances of each resource.
- There are four processes labelled P1 through P4.
- There are some resource instances already allocated to processes, as follows:
- one instance of R1 held by P2, another held by P3
- one instance of R2 held by P1, another held by P4
- Some processes have requested additional resources, as follows:
- P1 wants one instance of R1
- P3 wants one instance of R2
a. Draw the resource allocation graph for this system (5 points).
b. Is it possible to have a deadlocked state in this situation? Why or why not? (5 points).
c. Give a possible execution sequence of processes which does not lead to a deadlock (Bonus 5 points).
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