Exercise (9).

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Presentation transcript:

Exercise (9)

Deadlock Detection 5 processes, P0 ~ P4, three resource types, A, B, C. Type A has 10 instances, B has 5 instances, C has 7 instances Is the system safe? If yes, what is a safe schedule of process execution?  Alloc   Max   Avail  A B C A B C A B C P0 1 7 5 3 P1 3 2 3 2 2 P2 3 2 9 2 P3 2 1 1 2 2 2 P4 2 4 3 3

Deadlock Detection (cont'd) 5 processes, P0 ~ P4, three resource types, A, B, C. Type A has 10 instances, B has 5 instances, C has 7 instances Is the system safe? If yes, what is a safe schedule of process execution?  Alloc   Need   Avail  A B C A B C A B C P0 1 P1 3 2 P2 3 2 P3 2 1 1 P4 2