Using the banker’s algorithm, determine whether or not each of the following states is unsafe. If the state is safe, illustrate the order in which the processes may complete. Otherwise, illustrate why the state is unsafe . Show algorithm procedure  a. Available = (1, 2 , 0, 2) b. Available = (2, 1, 0, 2)

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
Chapter1: Introduction
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Consider the following snapshot of a system:
       Allocation      Max
      A,B,C,D         A,B,C,D
P0  0,2,0,2          2,3,3,8
P1  1,3,2,2          3,5,2,5
P2 1,2,0,1           3,4,5,1
P3 2,1,1,1           3,2,1,3
P4 1,0,2,0           2,3,3,1


Using the banker’s algorithm, determine whether or not each of the following states is unsafe. If the
state is safe, illustrate the order in which the processes may complete. Otherwise, illustrate why the
state is unsafe . Show algorithm procedure 
a. Available = (1, 2 , 0, 2)
b. Available = (2, 1, 0, 2)

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