Na plataforma Bun, desenvolvida como uma alternativa ao Node.js e destinada \u00e0 execu\u00e7\u00e3o isolada de aplica\u00e7\u00f5es escritas em JavaScript, JSX e TypeScript, foi implementada uma funcionalidade experimental que permite a compila\u00e7\u00e3o e execu\u00e7\u00e3o de manipuladores escritos em C. Anteriormente, para chamar c\u00f3digo de baixo n\u00edvel, era necess\u00e1rio criar complementos N-API ou compilar o c\u00f3digo no formato WebAssembly (WASM\/WASI), o que complicava o desenvolvimento e impunha certas restri\u00e7\u00f5es. Agora, o c\u00f3digo em C pode ser integrado diretamente ao JavaScript e compilado em tempo real utilizando o compilador TinyCC, al\u00e9m de permitir a conex\u00e3o de bibliotecas vinculadas dinamicamente. import { cc } from 'bun:ffi'; export const { symbols: { hello }, } = cc({ source: '.\/hello.c', symbols: { hello: { returns: 'void', args: [], }, }, }); hello(); <\/p>\n
Para trabalhar com a linguagem C, \u00e9 utilizada uma camada bun:ffi, que compila o c\u00f3digo-fonte em instru\u00e7\u00f5es de m\u00e1quina, o insere na mem\u00f3ria durante a execu\u00e7\u00e3o e garante a convers\u00e3o autom\u00e1tica de tipos de dados entre JavaScript e C. Observa-se que a sobrecarga ao acessar o c\u00f3digo C compilado foi reduzida ao m\u00ednimo, resultando em um atraso de cerca de 2 nanossegundos para cada chamada de fun\u00e7\u00f5es externas em C. Como exemplo, \u00e9 mostrado como acessar diretamente bibliotecas FFmpeg para a convers\u00e3o de v\u00eddeos curtos \u2014 eliminando opera\u00e7\u00f5es como o desvio para um processo separado e a aloca\u00e7\u00e3o de mem\u00f3ria para cada v\u00eddeo, o tempo total de execu\u00e7\u00e3o da tarefa de teste usando bun:ffi foi reduzido em tr\u00eas vezes. <\/p>\n
Al\u00e9m disso, na vers\u00e3o Bun 1.1.29, suporte ao N-API (napi) foi adicionado para o c\u00f3digo escrito em C, permitindo que manipuladores escritos em C retornem objetos, strings, arrays e outros valores n\u00e3o primitivos do JavaScript, al\u00e9m dos tipos nativos da linguagem C, como int e float. O mecanismo de chamada para manipuladores em C tamb\u00e9m funciona ao carregar dinamicamente qualquer biblioteca com C ABI, independentemente de qual linguagem tenham sido originalmente escritas (C++, Rust, Zig, etc.), permitindo a chamada de fun\u00e7\u00f5es oferecidas por estas bibliotecas a partir do c\u00f3digo JavaScript sem a necessidade de uma fase separada de recompila\u00e7\u00e3o. Por exemplo, agora \u00e9 poss\u00edvel chamar APIs do sistema a partir do JavaScript. <\/p>\n
Lembramos que o projeto Bun est\u00e1 em desenvolvimento com o objetivo de garantir compatibilidade com aplicativos de servidor escritos para Node.js, e suporta a maior parte da API do Node.js. A plataforma inclui um conjunto de ferramentas para criar e executar aplicativos nas linguagens JavaScript e TypeScript, al\u00e9m de um runtime para executar aplicativos JavaScript sem navegador, gerenciador de pacotes (compat\u00edvel com NPM), ferramentas para execu\u00e7\u00e3o de testes e um sistema de build de pacotes autossuficientes. Em termos de desempenho, o Bun supera notavelmente o Deno e o Node.js (em testes baseados no framework React, a plataforma Bun \u00e9 duas vezes mais r\u00e1pida que o Deno e quase cinco vezes mais r\u00e1pida que o Node.js). O c\u00f3digo do Bun \u00e9 escrito em Zig e C++, e \u00e9 distribu\u00eddo sob a licen\u00e7a MIT. Para a execu\u00e7\u00e3o de JavaScript, utiliza-se o motor JavaScript JavaScriptCore e componentes do projeto WebKit com patches adicionais. \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. […]<\/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\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Na plataforma JavaScript Bun, foi adicionada a suporte para chamada de c\u00f3digo em C | ProHoster","description":"Na plataforma Bun, desenvolvida como uma alternativa ao Node.js e destinada \u00e0 execu\u00e7\u00e3o isolada de aplicativos escritos em JavaScript, JSX e TypeScript, foi implementada uma funcionalidade 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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"