Safety Algorithm

Q1. Explain Safety Algorithm.

Ans. Following are the steps taken in Safety Algorithm:

Step 1:

Let work and finish the vectors of length ‘m’ and ‘n’ respectively.

Initialize work=available and

If finish [i]=false

where

for i=0 to n-1

Step 2:

Find an i such that both

a)    finish[i]=false

b)    needi ≤ work[or available]

If no such exist, go to step 4.

Step 3:

Work = Work + Allocation

finish[i]=true

Go to step 2.

Step 4:

If finish[i]=true for all i, then the system in a safe state.

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