{"id":119917,"date":"2024-09-23T15:43:09","date_gmt":"2024-09-23T13:43:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-javascript-platforme-bun-dobavlena-podderzhka-vyzova-koda-na-yazyke-si"},"modified":"2024-09-23T15:43:09","modified_gmt":"2024-09-23T13:43:09","slug":"v-javascript-platforme-bun-dobavlena-podderzhka-vyzova-koda-na-yazyke-si","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/v-javascript-platforme-bun-dobavlena-podderzhka-vyzova-koda-na-yazyke-si","title":{"rendered":"La plateforme JavaScript Bun a d\u00e9sormais un support pour l'appel de code en langage C","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dans la plateforme Bun, d\u00e9velopp\u00e9e comme une alternative \u00e0 Node.js et destin\u00e9e \u00e0 l'ex\u00e9cution isol\u00e9e d'applications \u00e9crites en JavaScript, JSX et TypeScript, une fonctionnalit\u00e9 exp\u00e9rimentale a \u00e9t\u00e9 mise en place pour compiler et ex\u00e9cuter des gestionnaires \u00e9crits en C. Auparavant, pour appeler du code bas niveau, il fallait soit cr\u00e9er des extensions N-API, soit compiler le code au format WebAssembly (WASM\/WASI), ce qui compliquait le d\u00e9veloppement et imposait certaines limitations. Maintenant, le code en C peut \u00eatre directement int\u00e9gr\u00e9 dans JavaScript et compil\u00e9 \u00e0 la vol\u00e9e \u00e0 l'aide du compilateur TinyCC, ainsi que connecter des biblioth\u00e8ques dynamiquement li\u00e9es.           import { cc } from 'bun:ffi';       export const {       symbols: { hello },     } = cc({       source: '.\/hello.c',       symbols: {         hello: {           returns: 'void',           args: [],         },       },     });       hello();      <\/p>\n<p>Pour travailler avec le langage C, une couche interm\u00e9diaire bun:ffi est utilis\u00e9e, qui compile le code source en instructions machine, l'injecte en m\u00e9moire lors de l'ex\u00e9cution et assure la conversion automatique des types de donn\u00e9es entre JavaScript et C. Il est \u00e0 noter que les frais g\u00e9n\u00e9raux li\u00e9s \u00e0 l'appel du code C compil\u00e9 sont r\u00e9duits au minimum, entra\u00eenant un d\u00e9lai d'environ 2 nanosecondes par appel de fonctions C externes. Par exemple, il est montr\u00e9 comment appeler directement des biblioth\u00e8ques FFmpeg pour convertir des vid\u00e9os courtes \u2014 en \u00e9liminant des op\u00e9rations telles que le d\u00e9marrage d'un processus s\u00e9par\u00e9 et l'allocation de m\u00e9moire pour chaque vid\u00e9o, le temps total d'ex\u00e9cution de la t\u00e2che de test utilisant bun:ffi a pu \u00eatre r\u00e9duit par trois.        <\/p>\n<p>De plus, dans la version 1.1.29 de Bun, le support N-API (napi) a \u00e9t\u00e9 ajout\u00e9 pour le code en langage C, permettant aux gestionnaires \u00e9crits en C de retourner des objets, des cha\u00eenes, des tableaux et d'autres valeurs non primitives de JavaScript, en plus des types sp\u00e9cifiques au langage C tels que int et float. Le m\u00e9canisme d'appel des gestionnaires en C fonctionne \u00e9galement lors du chargement dynamique de toute biblioth\u00e8que avec C ABI, ind\u00e9pendamment du langage dans lequel elles ont \u00e9t\u00e9 initialement \u00e9crites (C++, Rust, Zig, etc.), ce qui permet d'appeler depuis le code JavaScript les fonctions fournies par ces biblioth\u00e8ques sans \u00e9tape de recompilation s\u00e9par\u00e9e. Par exemple, il est d\u00e9sormais possible d'acc\u00e9der aux API syst\u00e8me directement depuis JavaScript.      <\/p>\n<p>Rappelons que le projet Bun se d\u00e9veloppe en tenant compte de la compatibilit\u00e9 avec les applications serveur \u00e9crites pour Node.js et prend en charge la majeure partie de l'API Node.js. La plateforme comprend un ensemble d'outils pour cr\u00e9er et ex\u00e9cuter des applications en JavaScript et TypeScript, ainsi qu'un runtime pour ex\u00e9cuter des applications JavaScript sans navigateur, un gestionnaire de paquets (compatible avec NPM), des outils pour ex\u00e9cuter des tests et un syst\u00e8me de construction de paquets autonomes. En termes de performances, Bun surpasse nettement Deno et Node.js (dans les tests bas\u00e9s sur le framework React, la plateforme Bun est deux fois plus rapide que Deno et presque cinq fois plus rapide que Node.js). Le code de Bun est \u00e9crit en Zig et C++ et est distribu\u00e9 sous la licence MIT. Pour ex\u00e9cuter JavaScript, il utilise le moteur JavaScript JavaScriptCore et des composants du projet WebKit avec des correctifs suppl\u00e9mentaires.<br \/>\n<br \/>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61915\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 Bun, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u044b Node.js \u0438 \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0434\u043b\u044f \u043e\u0431\u043e\u0441\u043e\u0431\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u044f\u0437\u044b\u043a\u0430\u0445 JavaScript, JSX \u0438 TypeScript, \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438 \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438. \u0420\u0430\u043d\u0435\u0435 \u0434\u043b\u044f \u0432\u044b\u0437\u043e\u0432\u0430 \u043d\u0438\u0437\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043b\u043e\u0441\u044c \u043b\u0438\u0431\u043e \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c N-API-\u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f, \u043b\u0438\u0431\u043e \u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043a\u043e\u0434 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442 WebAssembly (WASM\/WASI), \u0447\u0442\u043e \u0443\u0441\u043b\u043e\u0436\u043d\u044f\u043b\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0438 \u043d\u0430\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u043b\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f. [&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-119917","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=\"\u0412 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 Bun, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u044b Node.js \u0438 \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0434\u043b\u044f \u043e\u0431\u043e\u0441\u043e\u0431\u043b\u0435\u043d\u043d\u043e\u0433\u043e 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