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</div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Sitio"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contenidos" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contenidos</h2> <button 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vector-page-titlebar-toc vector-button-flush-left" title="Tabla de contenidos" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Cambiar a la tabla de contenidos" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Cambiar a la tabla de contenidos</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">XNU</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ir a un artículo en otro idioma. Disponible en 21 idiomas" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-21" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">21 idiomas</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A5%D9%83%D8%B3_%D8%A3%D9%86_%D9%8A%D9%88" title="إكس أن يو – árabe" lang="ar" hreflang="ar" data-title="إكس أن يو" data-language-autonym="العربية" data-language-local-name="árabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/XNU" title="XNU – catalán" lang="ca" hreflang="ca" data-title="XNU" data-language-autonym="Català" data-language-local-name="catalán" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/XNU" title="XNU – checo" lang="cs" hreflang="cs" data-title="XNU" data-language-autonym="Čeština" data-language-local-name="checo" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/XNU" title="XNU – alemán" lang="de" hreflang="de" data-title="XNU" data-language-autonym="Deutsch" data-language-local-name="alemán" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/XNU" title="XNU – inglés" lang="en" hreflang="en" data-title="XNU" data-language-autonym="English" data-language-local-name="inglés" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%DB%8C%DA%A9%D8%B3%E2%80%8C%D8%A7%D9%86%E2%80%8C%DB%8C%D9%88" title="ایکس‌ان‌یو – persa" lang="fa" hreflang="fa" data-title="ایکس‌ان‌یو" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/XNU" title="XNU – finés" lang="fi" hreflang="fi" data-title="XNU" data-language-autonym="Suomi" data-language-local-name="finés" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/XNU" title="XNU – francés" lang="fr" hreflang="fr" data-title="XNU" data-language-autonym="Français" data-language-local-name="francés" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/XNU" title="XNU – hebreo" lang="he" hreflang="he" data-title="XNU" data-language-autonym="עברית" data-language-local-name="hebreo" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/XNU" title="XNU – italiano" lang="it" hreflang="it" data-title="XNU" data-language-autonym="Italiano" data-language-local-name="italiano" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/XNU" title="XNU – japonés" lang="ja" hreflang="ja" data-title="XNU" data-language-autonym="日本語" data-language-local-name="japonés" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/XNU" title="XNU – coreano" lang="ko" hreflang="ko" data-title="XNU" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/XNU" title="XNU – neerlandés" lang="nl" hreflang="nl" data-title="XNU" data-language-autonym="Nederlands" data-language-local-name="neerlandés" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/XNU" title="XNU – polaco" lang="pl" hreflang="pl" data-title="XNU" data-language-autonym="Polski" data-language-local-name="polaco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/XNU" title="XNU – portugués" lang="pt" hreflang="pt" data-title="XNU" data-language-autonym="Português" data-language-local-name="portugués" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/XNU" title="XNU – ruso" lang="ru" hreflang="ru" data-title="XNU" data-language-autonym="Русский" data-language-local-name="ruso" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/XNU" title="XNU – sueco" lang="sv" hreflang="sv" data-title="XNU" data-language-autonym="Svenska" data-language-local-name="sueco" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/XNU" title="XNU – turco" lang="tr" hreflang="tr" data-title="XNU" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/XNU" title="XNU – ucraniano" lang="uk" hreflang="uk" data-title="XNU" data-language-autonym="Українська" data-language-local-name="ucraniano" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/XNU" title="XNU – vietnamita" lang="vi" hreflang="vi" data-title="XNU" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/XNU" title="XNU – chino" lang="zh" hreflang="zh" data-title="XNU" data-language-autonym="中文" data-language-local-name="chino" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q14583#sitelinks-wikipedia" title="Editar enlaces interlingüísticos" class="wbc-editpage">Editar enlaces</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espacios de nombres"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/XNU" title="Ver la página de contenido [c]" accesskey="c"><span>Artículo</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discusi%C3%B3n:XNU" rel="discussion" title="Discusión acerca de la página [t]" accesskey="t"><span>Discusión</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Cambiar variante de idioma" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">español</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Vistas"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/XNU"><span>Leer</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=XNU&action=edit" title="Editar esta página [e]" accesskey="e"><span>Editar</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=XNU&action=history" title="Versiones anteriores de esta página [h]" accesskey="h"><span>Ver historial</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Página de herramientas"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Herramientas" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Herramientas</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Herramientas</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mover a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">ocultar</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Más opciones" > <div class="vector-menu-heading"> Acciones </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/XNU"><span>Leer</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=XNU&action=edit" title="Editar esta página [e]" accesskey="e"><span>Editar</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=XNU&action=history"><span>Ver historial</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:LoQueEnlazaAqu%C3%AD/XNU" title="Lista de todas las páginas de la wiki que enlazan aquí [j]" accesskey="j"><span>Lo que enlaza aquí</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:CambiosEnEnlazadas/XNU" rel="nofollow" title="Cambios recientes en las páginas que enlazan con esta [k]" accesskey="k"><span>Cambios en enlazadas</span></a></li><li id="t-upload" class="mw-list-item"><a href="//commons.wikimedia.org/wiki/Special:UploadWizard?uselang=es" title="Subir archivos [u]" accesskey="u"><span>Subir archivo</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=XNU&oldid=163899375" title="Enlace permanente a esta versión de la página"><span>Enlace permanente</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=XNU&action=info" title="Más información sobre esta página"><span>Información de la página</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citar&page=XNU&id=163899375&wpFormIdentifier=titleform" title="Información sobre cómo citar esta página"><span>Citar esta página</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:Acortador_de_URL&url=https%3A%2F%2Fes.wikipedia.org%2Fwiki%2FXNU"><span>Obtener URL acortado</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fes.wikipedia.org%2Fwiki%2FXNU"><span>Descargar código QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimir/exportar </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Especial:Libro&bookcmd=book_creator&referer=XNU"><span>Crear un libro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=XNU&action=show-download-screen"><span>Descargar como PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=XNU&printable=yes" title="Versión imprimible de esta página [p]" accesskey="p"><span>Versión para imprimir</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> En otros proyectos </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q14583" title="Enlace al elemento conectado del repositorio de datos [g]" accesskey="g"><span>Elemento de Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Página de herramientas"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Apariencia"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Apariencia</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mover a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">ocultar</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">De Wikipedia, la enciclopedia libre</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="es" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r157776694">.mw-parser-output .infobox .imagen{max-width:100%;margin:0 auto}.mw-parser-output .infobox .imagen img{max-width:100%;height:auto}.mw-parser-output .infobox .mw-kartographer-container .thumbinner,.mw-parser-output .infobox .mw-kartographer-map{box-sizing:border-box;width:100%!important}body.skin-timeless .mw-parser-output .infobox .imagen a.image>img{max-width:100%!important;height:auto!important}</style><table class="infobox" style="width:22.7em; line-height: 1.4em; text-align:left; padding:.23em;"><tbody><tr><th colspan="3" class="cabecera software" style="text-align:center;background-color:transparent;color:inherit;;background-color:#DCEAEC;">XNU kernel</th></tr><tr><td colspan="3" style="text-align:center;width:65%;"> <i>Parte de <a href="/wiki/UNIX-like" class="mw-redirect" title="UNIX-like">UNIX-like</a></i></td></tr><tr><td colspan="3" class="imagen" style="text-align:center;width:65%;"> <span typeof="mw:File"><a href="/wiki/Archivo:Noyau_xnu_simplifi%C3%A9.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Noyau_xnu_simplifi%C3%A9.svg/250px-Noyau_xnu_simplifi%C3%A9.svg.png" decoding="async" width="250" height="361" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Noyau_xnu_simplifi%C3%A9.svg/375px-Noyau_xnu_simplifi%C3%A9.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Noyau_xnu_simplifi%C3%A9.svg/500px-Noyau_xnu_simplifi%C3%A9.svg.png 2x" data-file-width="135" data-file-height="195" /></a></span></td></tr><tr><th colspan="3" style="text-align:center;background-color:#DCEAEC;">Información general</th></tr><tr><th scope="row" style="text-align:left;width:35%;background-color:#eef5f6;"><a href="/wiki/Anexo:G%C3%A9neros_de_software" title="Anexo:Géneros de software">Tipo de programa</a></th><td colspan="2" style="width:65%;"> <a href="/wiki/N%C3%BAcleo_h%C3%ADbrido" title="Núcleo híbrido">Núcleo híbrido</a></td></tr><tr><th scope="row" style="text-align:left;width:35%;background-color:#eef5f6;"><a href="/wiki/Desarrollador_de_software" title="Desarrollador de software">Desarrollador</a></th><td colspan="2" style="width:65%;"> <a href="/wiki/Apple_Inc." class="mw-redirect" title="Apple Inc.">Apple Inc.</a></td></tr><tr><th scope="row" style="text-align:left;width:35%;background-color:#eef5f6;"><a href="/wiki/Licencia_de_software" title="Licencia de software">Licencia</a></th><td colspan="2" style="width:65%;"> <a href="/wiki/Apple_Public_Source_License" title="Apple Public Source License">Apple Public Source License</a> 2.0</td></tr><tr><th colspan="3" style="text-align:center;background-color:#DCEAEC;">Información técnica</th></tr><tr><th scope="row" style="text-align:left;width:35%;background-color:#eef5f6;"><a href="/wiki/Lenguaje_de_programaci%C3%B3n" title="Lenguaje de programación">Programado en</a></th><td colspan="2" style="width:65%;"> <ul style="list-style-type:none;list-style-image:none;margin-left:0;padding-left:0"><li><a href="/wiki/C%2B%2B" title="C++">C++</a></li><li><a href="/wiki/C_(lenguaje_de_programaci%C3%B3n)" title="C (lenguaje de programación)">C</a></li></ul></td></tr><tr><th colspan="3" style="text-align:center;background-color:#DCEAEC;">Enlaces</th></tr><tr><td colspan="3" style="text-align:center;width:65%;"> <div><a rel="nofollow" class="external text" href="http://opensource.apple.com/source/xnu/">Sitio web oficial</a></div> <div><a rel="nofollow" class="external text" href="https://github.com/apple-oss-distributions/xnu">Repositorio de código</a></div> </td></tr><tr><td class="noprint" colspan="3" style="text-align:left;"><div class="plainlinks wikidata-link" style="font-size: 0.85em">[<a href="https://www.wikidata.org/wiki/Q14583" class="extiw" title="d:Q14583">editar datos en Wikidata</a>]</div></td></tr></tbody></table> <p><b>XNU</b> es un <a href="/wiki/N%C3%BAcleo_(inform%C3%A1tica)" title="Núcleo (informática)"> núcleo</a> o <a href="/wiki/N%C3%BAcleo_(inform%C3%A1tica)" title="Núcleo (informática)">kernel</a> desarrollado originalmente por <a href="/wiki/NeXT" title="NeXT">NeXT</a> e implementado por <a href="/wiki/Apple" title="Apple">Apple Inc.</a> en 1996 en su <a href="/wiki/Sistema_operativo" title="Sistema operativo">sistema operativo</a> <a href="/wiki/MacOS" title="MacOS">macOS</a>. XNU es el acrónimo de "<i>X is Not Unix</i>". Fue liberado como <a href="/wiki/Software_libre_y_de_c%C3%B3digo_abierto" title="Software libre y de código abierto">software libre y de código abierto</a> como parte del sistema operativo <a href="/wiki/Darwin_(sistema_operativo)" title="Darwin (sistema operativo)">Darwin</a>. Es un núcleo híbrido, lo que significa que su arquitectura de diseño es una combinación de arquitecturas basadas en <a href="/wiki/N%C3%BAcleo_monol%C3%ADtico" title="Núcleo monolítico">núcleo monolítico</a> y <a href="/wiki/Micron%C3%BAcleo" title="Micronúcleo">micronúcleo</a>. Está basado en <a href="/wiki/Mach_(n%C3%BAcleo)" title="Mach (núcleo)"> Mach</a> 3.0 (desarrollado en la <a href="/wiki/Universidad_Carnegie_Mellon" title="Universidad Carnegie Mellon">Universidad Carnegie Mellon</a> en 1980) y el código <a href="/wiki/Berkeley_Software_Distribution" title="Berkeley Software Distribution">BSD</a>, en especial de <a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a> 5.x y usa <a href="/w/index.php?title=I/O_Kit&action=edit&redlink=1" class="new" title="I/O Kit (aún no redactado)">I/O Kit</a>, un <a href="/wiki/Framework" title="Framework">framework</a> de controlador de dispositivos orientado a objetos que hace de XNU un núcleo diferente al de los sistemas tradicionales. </p> <div class="mw-heading mw-heading2"><h2 id="Diseño"><span id="Dise.C3.B1o"></span>Diseño</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XNU&action=edit&section=1" title="Editar sección: Diseño"><span>editar</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Como algunos núcleos modernos, XNU tiene una funcionalidad equivalente a un núcleo híbrido y tiene características tanto de los <a href="/wiki/N%C3%BAcleo_monol%C3%ADtico" title="Núcleo monolítico">núcleos monolíticos</a> como de los <a href="/wiki/Micron%C3%BAcleo" title="Micronúcleo">micronúcleos</a>. Intenta hacer un mejor uso de las dos tecnologías, como la capacidad de pasar mensajes de los micronúcleos, permitiendo una mayor modularidad y que grandes porciones del SO se beneficien de la <a href="/wiki/Protecci%C3%B3n_de_memoria" title="Protección de memoria">protección de memoria</a>. Asimismo, permite mantener la velocidad de los núcleos monolíticos para desempeñar determinadas tareas. </p><p>Actualmente, XNU funciona en procesadores basados en <a href="/wiki/Arquitectura_ARM" title="Arquitectura ARM">ARM</a>, <a href="/wiki/X86" title="X86">x86</a>, <a href="/wiki/X86-64" title="X86-64">x86-64</a> y <a href="/wiki/PowerPC" title="PowerPC">PowerPC</a>, tanto en modelos de un único procesador como modelos <a href="/wiki/SMP" class="mw-redirect" title="SMP">SMP</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Mach">Mach</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XNU&action=edit&section=2" title="Editar sección: Mach"><span>editar</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>El corazón de XNU, <a href="/wiki/Mach_(n%C3%BAcleo)" title="Mach (núcleo)">Mach</a>, fue originalmente concebido como un micronúcleo. Como tal, es capaz de hacer funcionar la base de un <a href="/wiki/Sistema_operativo" title="Sistema operativo">sistema operativo</a> como procesos separados, lo que permite una mayor flexibilidad (se podrían ejecutar varios sistemas operativos en paralelo sobre la base de Mach), pero a menudo reduce el rendimiento debido al tiempo consumido para cambiar del contexto núcleo al contexto usuario, y al trabajo que se deriva de mapear o copiar mensajes entre el <a href="/wiki/Espacio_de_direcciones" title="Espacio de direcciones">espacio de direcciones</a> del micronúcleo y el de los <a href="/wiki/Daemon_(inform%C3%A1tica)" title="Daemon (informática)">demonios</a> de servicios. Con Mac OS X, los diseñadores han intentado hacer más sencillas algunas tareas, y las funcionalidades de BSD se han implementado en espacio privilegiado junto con Mach. El resultado es una combinación de Mach y un clásico núcleo BSD, con algunas ventajas y desventajas de ambos. </p><p><a href="/wiki/GNU_Hurd" title="GNU Hurd">GNU Hurd</a> también hace uso de Mach, sin embargo toda la funcionalidad aparte de Mach que XNU implementa en espacio privilegiado, Hurd lo hace en <a href="/wiki/Espacio_de_usuario" title="Espacio de usuario">espacio de usuario</a> (los servidores o <a href="/wiki/Daemon" class="mw-disambig" title="Daemon">demonios</a>) junto con la biblioteca de <a href="/wiki/Tiempo_de_ejecuci%C3%B3n" title="Tiempo de ejecución">tiempo de ejecución</a> (<a href="/w/index.php?title=Biblioteca_de_C&action=edit&redlink=1" class="new" title="Biblioteca de C (aún no redactado)">la biblioteca del lenguaje C</a>). GNU Hurd es fiel a un diseño de micronúcleo. </p> <div class="mw-heading mw-heading2"><h2 id="Enlaces_externos">Enlaces externos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XNU&action=edit&section=3" title="Editar sección: Enlaces externos"><span>editar</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20110812000315/http://osxbook.com/book/bonus/ancient/whatismacosx//arch_xnu.html">XNU: The Kernel</a> (en inglés) - Una explicación de los componentes de XNU en kernelthread.com</li></ul> <div class="listaref" style="list-style-type: decimal;"></div> <style data-mw-deduplicate="TemplateStyles:r161257576">.mw-parser-output .mw-authority-control{margin-top:1.5em}.mw-parser-output .mw-authority-control .navbox table{margin:0}.mw-parser-output .mw-authority-control .navbox hr:last-child{display:none}.mw-parser-output .mw-authority-control .navbox+.mw-mf-linked-projects{display:none}.mw-parser-output .mw-authority-control .mw-mf-linked-projects{display:flex;padding:0.5em;border:1px solid var(--border-color-base,#a2a9b1);background-color:var(--background-color-neutral,#eaecf0);color:var(--color-base,#202122)}.mw-parser-output .mw-authority-control .mw-mf-linked-projects ul li{margin-bottom:0}.mw-parser-output .mw-authority-control .navbox{border:1px solid var(--border-color-base,#a2a9b1);background-color:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .mw-authority-control .navbox-list{border-color:#f8f9fa}.mw-parser-output .mw-authority-control .navbox th{background-color:#eeeeff}html.skin-theme-clientpref-night .mw-parser-output .mw-authority-control .mw-mf-linked-projects{border:1px solid var(--border-color-base,#72777d);background-color:var(--background-color-neutral,#27292d);color:var(--color-base,#eaecf0)}html.skin-theme-clientpref-night .mw-parser-output .mw-authority-control .navbox{border:1px solid var(--border-color-base,#72777d)!important;background-color:var(--background-color-neutral-subtle,#202122)!important}html.skin-theme-clientpref-night .mw-parser-output .mw-authority-control .navbox-list{border-color:#202122!important}html.skin-theme-clientpref-night .mw-parser-output .mw-authority-control .navbox th{background-color:#27292d!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .mw-authority-control .mw-mf-linked-projects{border:1px solid var(--border-color-base,#72777d)!important;background-color:var(--background-color-neutral,#27292d)!important;color:var(--color-base,#eaecf0)!important}html.skin-theme-clientpref-os .mw-parser-output .mw-authority-control .navbox{border:1px solid var(--border-color-base,#72777d)!important;background-color:var(--background-color-neutral-subtle,#202122)!important}html.skin-theme-clientpref-os .mw-parser-output .mw-authority-control .navbox-list{border-color:#202122!important}html.skin-theme-clientpref-os .mw-parser-output .mw-authority-control .navbox th{background-color:#27292d!important}}</style><div class="mw-authority-control"><div role="navigation" class="navbox" aria-label="Navbox" style="width: inherit;padding:3px"><table class="hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width: 12%; 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