{"id":103828,"date":"2022-04-20T15:37:16","date_gmt":"2022-04-20T13:37:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-predvaritelnyj-variant-standarta-webassembly-2-0"},"modified":"2022-04-20T15:37:16","modified_gmt":"2022-04-20T13:37:16","slug":"dostupen-predvaritelnyj-variant-standarta-webassembly-2-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/dostupen-predvaritelnyj-variant-standarta-webassembly-2-0","title":{"rendered":"Est\u00e1 disponible una versi\u00f3n preliminar del est\u00e1ndar WebAssembly 2.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>El consorcio W3C ha publicado una versi\u00f3n preliminar de una nueva especificaci\u00f3n que estandariza el c\u00f3digo intermedio WebAssembly 2.0 y la API asociada, permitiendo crear aplicaciones de alto rendimiento que son port\u00e1tiles entre navegadores y plataformas de hardware. WebAssembly proporciona un c\u00f3digo intermedio universal de bajo nivel que es independiente del navegador para ejecutar aplicaciones compiladas en varios lenguajes de programaci\u00f3n. Gracias al uso de JIT para WebAssembly, se puede lograr un nivel de rendimiento cercano al c\u00f3digo nativo.      <\/p>\n<p>La tecnolog\u00eda WebAssembly se puede utilizar para ejecutar en el navegador tareas que requieren un alto rendimiento, como codificaci\u00f3n de video, procesamiento de sonido, manipulaci\u00f3n gr\u00e1fica y 3D, desarrollo de juegos, operaciones criptogr\u00e1ficas y c\u00e1lculos matem\u00e1ticos mediante la organizaci\u00f3n de la ejecuci\u00f3n en el navegador de c\u00f3digo escrito en lenguajes compilables como C\/C++.        <\/p>\n<p>Entre las principales tareas de WebAssembly se destacan asegurar la portabilidad, la previsibilidad del comportamiento y la identidad de la ejecuci\u00f3n del c\u00f3digo en diferentes plataformas. Recientemente, WebAssembly tambi\u00e9n se ha promovido como una plataforma universal para la ejecuci\u00f3n segura de c\u00f3digo en cualquier infraestructura, sistema operativo y dispositivo, sin limitaciones a navegadores.        <\/p>\n<p>W3C ha publicado tres especificaciones preliminares de WebAssembly 2.0:  <\/p>\n<ul>\n<li class=\"l\">  WebAssembly Core \u2014 describe una m\u00e1quina virtual de bajo nivel para ejecutar c\u00f3digo intermedio de WebAssembly. Los recursos relacionados con WebAssembly se suministran en formato \u00ab.wasm\u00bb, similar a los archivos \u00ab.class\u00bb en Java y que contienen datos est\u00e1ticos y segmentos de c\u00f3digo para trabajar con esos datos.   <\/li>\n<li class=\"l\"> Interfaz JavaScript de WebAssembly: proporciona una API para integrarse con JavaScript. Permite obtener valores y pasar par\u00e1metros a funciones de WebAssembly. La ejecuci\u00f3n de WebAssembly se ajusta al modelo de seguridad de JavaScript y toda la interacci\u00f3n con el sistema subyacente se realiza de forma similar a la ejecuci\u00f3n del c\u00f3digo JavaScript.      <\/li>\n<li class=\"l\">  WebAssembly Web API \u2014 define una interfaz de programaci\u00f3n basada en el mecanismo Promise para solicitar y ejecutar recursos \u00ab.wasm\u00bb. El formato de los recursos de WebAssembly est\u00e1 optimizado para permitir la ejecuci\u00f3n sin esperar a que se cargue completamente el archivo, lo que mejora la capacidad de respuesta de las aplicaciones web.  <\/ul>\n<p>Los principales cambios en WebAssembly 2.0, en comparaci\u00f3n con la primera versi\u00f3n del est\u00e1ndar:    <\/p>\n<ul>\n<li class=\"l\"> Soporte para el tipo vectorial v128 y sus instrucciones vectoriales asociadas, que permiten ejecutar acciones en paralelo sobre m\u00faltiples valores num\u00e9ricos (SIMD, single instruction multiple data).\n<li class=\"l\"> Posibilidad de importar y exportar variables globales modificables (mutable), que permiten aplicar enlace global a valores como punteros de pila en C++.\n<li class=\"l\"> Nuevas instrucciones para convertir tipos float a int, que en lugar de generar una excepci\u00f3n al desbordar el resultado, devuelven el valor m\u00ednimo o m\u00e1ximo posible (necesario para SIMD).\n<li class=\"l\"> Instrucciones para extender el signo de enteros (aumentar la precisi\u00f3n del n\u00famero manteniendo el signo y el valor).\n<li class=\"l\"> Soporte para devolver m\u00faltiples valores en bloques y funciones (adem\u00e1s de pasar varios par\u00e1metros a las funciones).\n<li class=\"l\"> Implementaci\u00f3n de las funciones de JavaScript BigInt64Array y BigUint64Array para convertir entre el tipo BigInt de JavaScript y la representaci\u00f3n de enteros de 64 bits en WebAssembly.\n<li class=\"l\"> Soporte para tipos de referencia (funcref y externref) y las instrucciones relacionadas (select, ref.null, ref.func y ref.is_null).\n<li class=\"l\"> Instrucciones memory.copy, memory.fill, memory.init y data.drop para copiar datos entre \u00e1reas de memoria y limpiar regiones de memoria.\n<li class=\"l\"> Instrucciones para acceso directo y modificaci\u00f3n de tablas (table.set, table.get, table.size, table.grow). Posibilidad de crear, importar y exportar m\u00faltiples tablas en un solo m\u00f3dulo. Funciones de copia\/relleno de tablas en modo por lotes (table.copy, table.init y elem.drop).            <\/ul>\n<p>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57052\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c W3C \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0447\u0435\u0440\u043d\u043e\u0432\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043d\u043e\u0432\u043e\u0439 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438, \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u0439 \u043a\u043e\u0434 WebAssembly 2.0 \u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0439 \u0441 \u043d\u0438\u043c API, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0438\u043c\u044b\u0435 \u043c\u0435\u0436\u0434\u0443 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430\u043c\u0438 \u0438 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u044b\u043c\u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u043c\u0438. WebAssembly \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043d\u0435 \u0437\u0430\u0432\u0438\u0441\u044f\u0449\u0438\u0439 \u043e\u0442 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u044b\u0439 \u043d\u0438\u0437\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u044b\u0439 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u0439 \u043a\u043e\u0434 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0441\u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u044f\u0437\u044b\u043a\u043e\u0432 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0411\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044e JIT \u0434\u043b\u044f WebAssembly \u043c\u043e\u0436\u043d\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0443\u0440\u043e\u0432\u043d\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0431\u043b\u0438\u0437\u043a\u043e\u0433\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103828","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c W3C 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