Answered: Describe why a user thread must be…

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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Describe why a user thread must be mapped onto an available kernel thread and explain how this mapping is facilitated by an operating system? In other words, briefly describe the interface a kernel provides to enable such a mapping and discuss one of the models for mapping user threads to kernel threads.

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kernel thread:-

Being a schedulable object, a kernel thread is managed by the system scheduler.

Strong implementation dependencies exist for these threads, which the system scheduler is aware of. Libraries offer user threads to make the creation of portable programs easier.

The system scheduler manages kernel threads, which are kernel entities like processes and interrupt handlers. Despite running inside a process, a kernel thread is accessible to all other threads in the system.

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