Consider the following sate of system.Allocation MAX AvailableABCD ABCD ABCDP0 0023 0023 1520P1 0000 1750P2 2454 3456P3 0542 0562P4 0125 0767• Where system in Safe state.• If request from P1 arrives for (0420) can be granted?
Question
Consider the following sate of system.Allocation MAX AvailableABCD ABCD ABCDP0 0023 0023 1520P1 0000 1750P2 2454 3456P3 0542 0562P4 0125 0767• Where system in Safe state.• If request from P1 arrives for (0420) can be granted?
Solution
To determine if the request from P1 for (0420) can be granted, we need to follow the steps of the Banker's algorithm.
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Calculate the Need matrix: The Need matrix represents the remaining resources that each process needs to complete its execution. It is calculated by subtracting the Allocation matrix from the MAX matrix.
Need = MAX - Allocation
For P1, the Need matrix would be: Need(P1) = MAX(P1) - Allocation(P1) = (0000) - (1750) = (0000)
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Check if the request can be granted: We need to compare the request with the Available resources. If the request is less than or equal to the Available resources and the Need matrix, then the request can be granted.
Request <= Available Request <= Need(P1)
The request from P1 is (0420), and the Available resources are (1520). Comparing the request with the Available resources, we have: (0420) <= (1520)
Comparing the request with the Need matrix for P1, we have: (0420) <= (0000)
Since the request is less than or equal to both the Available resources and the Need matrix, the request can be granted.
Therefore, the request from P1 for (0420) can be granted.
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