Consider the following snapshot of a system:       Allocation  Max Available   A B C D A B C D A B C D P0 0 0 1 2 0 0 1 2 1 5 2 0 P1 1 0 0 0 1 7 5 0   P2 1 3 5 4 2 3 5 6   P3 0 6 3 2 0 6 5 2   P4 0 0 1 4 0 6 5 6       Answer the following questions using the banker’s algorithm:   a). What is the content of the matrix Need?   b). Is the system in a safe state?   c). If a request from process P1 arrives for (0,4,2,0), can the request be granted immediately?

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
Section: Chapter Questions
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Consider the following snapshot of a system:

 

 

 

Allocation

 Max

Available

 

A B C D

A B C D

A B C D

P0

0 0 1 2

0 0 1 2

1 5 2 0

P1

1 0 0 0

1 7 5 0

 

P2

1 3 5 4

2 3 5 6

 

P3

0 6 3 2

0 6 5 2

 

P4

0 0 1 4

0 6 5 6

 

 

 

Answer the following questions using the banker’s algorithm:

 

a). What is the content of the matrix Need?

 

b). Is the system in a safe state?

 

c). If a request from process P1 arrives for (0,4,2,0), can the request

be granted immediately?

 

 

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