Banker’s algorithm to see if the following is a safe sequence   Processes Allocation Max Available   R1 R2 R3 R1 R2 R3 R1 R2 R3 P1 0 1 0 7 4 4 4 1 2 P2 1 0 0 3 3 2       P3 4 0 3 7 0 3       P4 3 1 4 4 3 4       Answer the following questions Calculate and display the Need matrix Is the system in safe state? If yes, then show at least one safe sequence of the processes. If no, then show why it is in an unsafe situation. Additionally, show how the Available (working array) changes as each process terminates.

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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Banker’s algorithm to see if the following is a safe sequence

 

Processes

Allocation

Max

Available

 

R1

R2

R3

R1

R2

R3

R1

R2

R3

P1

0

1

0

7

4

4

4

1

2

P2

1

0

0

3

3

2

     

P3

4

0

3

7

0

3

     

P4

3

1

4

4

3

4

   

 

Answer the following questions

  • Calculate and display the Need matrix

Is the system in safe state? If yes, then show at least one safe sequence of the processes. If no, then show why it is in an unsafe situation. Additionally, show how the Available (working array) changes as each process terminates.

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