Banker's algorithm: The total numbers of resources A, B, C, and D are 6, 7, 6, and 8, respectively. Consider the snapshot of the system in the following table. P1 P2 P3 P4 maximum required BCDA B C D 4 3 current allocation A 1 2 2 0 2 1 2 2 2 4 2 0 2 1 2 1 3 1 1 0 2 3 2 4 2 1 2343 2.1 If P1 asks for (1, 1, 1, 0), can it be granted immediately? 2.2 If P2 asks for (0, 0, 1, 1), can it be granted immediately? 2.3 If P3 asks for (1, 1, 1, 1), can it be granted immediately? 2.4 If P4 asks for (1, 0, 1, 1), can it be granted immediately? Show the steps of the Banker's algorithm.

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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Subject: Operating Systems

 

Banker's algorithm: The total numbers of resources A, B, C, and D are 6, 7, 6, and 8,
respectively. Consider the snapshot of the system in the following table.
current
allocation
P1
P2
P3 0
P4
maximum
required
A B C D A B C D
1 2
2
0 2
4 3
2
2
2
4
2
4
1 2
2
1 2 1 3 2
1 1 0
2 3
2
1
23
3
4
3
2.1 If P1 asks for (1, 1, 1, 0), can it be granted immediately?
2.2 If P2 asks for (0, 0, 1, 1), can it be granted immediately?
2.3 If P3 asks for (1, 1, 1, 1), can it be granted immediately?
2.4 If P4 asks for (1, 0, 1, 1), can it be granted immediately?
Show the steps of the Banker's algorithm.
Transcribed Image Text:Banker's algorithm: The total numbers of resources A, B, C, and D are 6, 7, 6, and 8, respectively. Consider the snapshot of the system in the following table. current allocation P1 P2 P3 0 P4 maximum required A B C D A B C D 1 2 2 0 2 4 3 2 2 2 4 2 4 1 2 2 1 2 1 3 2 1 1 0 2 3 2 1 23 3 4 3 2.1 If P1 asks for (1, 1, 1, 0), can it be granted immediately? 2.2 If P2 asks for (0, 0, 1, 1), can it be granted immediately? 2.3 If P3 asks for (1, 1, 1, 1), can it be granted immediately? 2.4 If P4 asks for (1, 0, 1, 1), can it be granted immediately? Show the steps of the Banker's algorithm.
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