Operating system: Difference between revisions

Revision as of 07:13, 7 August 2024

Revision as of 08:34, 8 August 2024

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===Library===

A library operating system (libOS) is one in which the services that a typical operating system provides, such as networking, are provided in the form of [[Library (computing)|libraries]] and composed with thea single application and configuration code to construct a [[unikernel]]<ref name="Unikernels">{{cite magazine

|last1=Madhavapeddy |first1=Anil

|last2=Scott |first2=David J

|date=November 2013

|title=Unikernels: Rise of the Virtual Library Operating System: What if all the software layers in a virtual appliance were compiled within the same safe, high-level language framework?

|magazine=Queue |volume=11 |issue=11

|volume=11 |issue=11 |pages=30–44

|___location=New York, NY, USA
|publisher=ACM

|issn=1542-7730

|url=https://doi.org/10.1145/2557963.2566628

|doi=10.1145/2557963.2566628

|access-date=2024-08-07}}</ref>: a specialized, [[Single(only addressthe spaceabsolute operatingnecessary system|singlepieces addressof space]],code machineare imageextract thatfrom canlibraries beand deployedbound totogether<ref cloudname="Unikraft-Build-Process">{{cite or embedded environments.web

|url=https://unikraft.org/docs/concepts/build-process

|access-date=2024-08-08

|title=Build Process - Unikraft

|archive-date=2024-04-22

|archive-url=https://web.archive.org/web/20240422183734/https://unikraft.org/docs/concepts/build-process

|url-status=live}}</ref>), [[Single address space operating system|single address space]], machine image that can be deployed to cloud or embedded environments.

The operating system code and application code are not executed in separated [[Protection ring|protection domains]] (there is only a single application running, at least conceptually, so there is no need to prevent interference between applications) and OS services are accessed via simple library calls, without the usual overhead of [[Context switch|context switches]]<ref name="rise-of-libOS">{{cite web

|url=https://www.sigarch.org/leave-your-os-at-home-the-rise-of-library-operating-systems/

|access-date=2024-08-07

|title=Leave your OS at home: the rise of library operating systems

|date=<!--Sep 14, -->2017-09-14

|publisher=[[ACM SIGARCH]]

|archive-date=2024-03-01

|archive-url=https://web.archive.org/web/20240301072916/https://www.sigarch.org/leave-your-os-at-home-the-rise-of-library-operating-systems/

|url-status=live}}</ref>, in a way similarly to embedded and real-time OSes.