1.5. Given the following state of system: the system comprises of four processes and three resources. P1-P4 denotes the set of processes R1-R3 denotes the set of resources Claim Matrix C RI R2 R3 P1 4 5 3 23 P2 P31 2 3 P4 Allocation Matrix A R1R2 R3 2 0 P2 Available Matrix V RI R2 R3 1.5.1 Compute the Resource vector R. 1.5.2 Compute the need Matrix Is the curent allocation state safe? If, give a safe sequence of the process. In addition, show how the Available (working array) changes as each 1.5.3 process temminates

1.5. Given the following state of system: the system comprises of four processes and three resources. P1-P4 denotes the set of processes R1-R3 denotes the set of resources Claim Matrix C RI R2 R3 P1 4 5 3 23 P2 P31 2 3 P4 Allocation Matrix A R1R2 R3 2 0 P2 Available Matrix V RI R2 R3 1.5.1 Compute the Resource vector R. 1.5.2 Compute the need Matrix Is the curent allocation state safe? If, give a safe sequence of the process. In addition, show how the Available (working array) changes as each 1.5.3 process temminates

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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Concept explainers

Dynamic Multithreading

An algorithm that executes a single instruction in a uniprocessor system is called a serial algorithm. In the case of a multiprocessor computer system, multiple instructions are executed in parallel. A multithreaded algorithm is an algorithm that enables multiple instances of the code to be executed concurrently.Multithreading is a concept that allows the CPU to execute threads independently while sharing similar resources. It is an important CPU feature that works on the process. Thread is a sequence of instructions that executes in parallel with other threads. Because of multithreading, multiple tasks can be performed within a single process.

Question

1.5.
Given the following state of system: the system comprises of four processes
and three resouroes.
P1-P4 denotes the set of processes
R1- R3 denotes the set of resources
Claim Matrix C
RI R2 R3
P1 4 5 3
213
P2
P31 2 3
P4
Allocation Matrix A
R1R2 R3
2 0
P2
Available Matrix V
RI R2 R3
1.5.1
Compute the Resouroe vector R.
1.5.2
Compute the need Matrix
Is the curent allocation state safe? If, give a safe sequence of the
process. In addition, show how the Available (working array) changes as each
1.5.3
process temminates

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1. Let A, B and C be three different non-preemptible resource types. Assume maximum claims and current resource assignments for four processes P0, P1, P2, and P3, are given in the following table, along with the total number of allocated resources for each process. Маx Allocation Available АВС АВС АВС РО 001 001 P1 175 100 P2 235 135 P3 065 063 Total 299 152 a) How many resources are there of type (AB.C)? b) What is the contents of the Need matrix? c) Is the system in a safe state? Why? d) If a request from process P1 arrives for additional resources of (0,5,2), can the Banker's algorithm grant the request immediately?