b. Thread Allocation ABCD 3 1 2 1 2 1 0 2 2 4 1 3 Max A B C D 5 4 6 3 3 1 2 2 2 5 3 3 6 4 1 2 5 6 7 5 4 1 1 0 A ΤΟ T1 T2 T3 T4 2 1 2 1 Figure 1: Banker's Algorithm Matrices Consider the snapshot of the system shown in Figure 1, in which there five threads TO-T4 running with various numbers of four resource types A-D. (Assume that each resource type is distinct.) Fill in the Need matrix in the figure. Need B C D Available A B C D 4 2 2 5 c. Using the banker's algorithm, determine if the system is in a safe state. If the state is safe, show the order in which the threads execute. Otherwise, explain why the state is unsafe.
b. Thread Allocation ABCD 3 1 2 1 2 1 0 2 2 4 1 3 Max A B C D 5 4 6 3 3 1 2 2 2 5 3 3 6 4 1 2 5 6 7 5 4 1 1 0 A ΤΟ T1 T2 T3 T4 2 1 2 1 Figure 1: Banker's Algorithm Matrices Consider the snapshot of the system shown in Figure 1, in which there five threads TO-T4 running with various numbers of four resource types A-D. (Assume that each resource type is distinct.) Fill in the Need matrix in the figure. Need B C D Available A B C D 4 2 2 5 c. Using the banker's algorithm, determine if the system is in a safe state. If the state is safe, show the order in which the threads execute. Otherwise, explain why the state is unsafe.
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
Problem 1PE
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Part C, thanks!!
Transcribed Image Text:b.
Thread
Allocation
ABCD
3 1 2 1
2 1 0 2
2 4 1 3
4 1 1
Max
A B C D
5 4 6 3
0
ΤΟ
T1
T2
T3
T4
2 1 2 1
Figure 1: Banker's Algorithm Matrices
Consider the snapshot of the system shown in Figure 1, in which there five threads TO-T4 running with various numbers of four resource types A-D.
(Assume that each resource type is distinct.) Fill in the Need matrix in the figure.
3 1 2 2
2 5 3 3
6 4 1 2
A
5 6 7 5
Need
B C D
Available
A B C D
4
2 2 5
c. Using the banker's algorithm, determine if the system is in a safe state. If the state is safe, show the order in which the threads execute. Otherwise, explain
why the state is unsafe.
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