P is a set of processes. R is a set of resources. E is a set of request or assignment edges. The sets P, R, and E are as follows: P = {P1, P2, P3} R = {R1, R2, R3} E = {P1 -> R1, P2 -> R3, P3-> R2, R1 -> P2, R2 -> P2, R2 -> P1, R3 -> P3} R1 has one instance. R2 has two instances. R3 has one instance. a. Explain clearly with the help of a properly labelled diagram what is a resource allocation graph? Draw the resource-allocation graph for the given case also. [2 + 1] b. Is there any deadlock in this situation? Explain your answer clearly

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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P is a set of processes. R is a set of resources. E is a set of request or assignment edges. The sets P, R,
and E are as follows:
P = {P1, P2, P3}
R = {R1, R2, R3}
E = {P1 -> R1, P2 -> R3, P3-> R2, R1 -> P2, R2 -> P2, R2 -> P1, R3 -> P3}
R1 has one instance. R2 has two instances. R3 has one instance.
a. Explain clearly with the help of a properly labelled diagram what is a resource allocation graph?
Draw the resource-allocation graph for the given case also. [2 + 1]
b. Is there any deadlock in this situation? Explain your answer clearly.

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