Na platform\u011b Bun, vyv\u00edjen\u00e9 jako alternativa k Node.js a ur\u010den\u00e9 pro izolovan\u00e9 spu\u0161t\u011bn\u00ed aplikac\u00ed napsan\u00fdch v jazyc\u00edch JavaScript, JSX a TypeScript, byla realizov\u00e1na experiment\u00e1ln\u00ed funkce kompilace a spu\u0161t\u011bn\u00ed handler\u016f napsan\u00fdch v jazyce C. D\u0159\u00edve bylo pro vol\u00e1n\u00ed n\u00edzko\u00farov\u0148ov\u00e9ho k\u00f3du nutn\u00e9 bu\u010f vytv\u00e1\u0159et N-API roz\u0161\u00ed\u0159en\u00ed, nebo kompilovat k\u00f3d do form\u00e1tu WebAssembly (WASM\/WASI), co\u017e zt\u011b\u017eovalo v\u00fdvoj a kladlo ur\u010dit\u00e9 omezen\u00ed. Nyn\u00ed je mo\u017en\u00e9 p\u0159\u00edmo vkl\u00e1dat k\u00f3d v jazyce C do JavaScriptu a kompilovat ho za b\u011bhu pomoc\u00ed kompil\u00e1toru TinyCC, a tak\u00e9 p\u0159ipojovat dynamicky linkovan\u00e9 knihovny. import { cc } from 'bun:ffi'; export const { symbols: { hello }, } = cc({ source: '.\/hello.c', symbols: { hello: { returns: 'void', args: [], }, }, }); hello(); <\/p>\n
Pro pr\u00e1ci s jazykem C se pou\u017e\u00edv\u00e1 mezi\u010dl\u00e1nek bun:ffi, kter\u00fd kompiluje zdrojov\u00fd k\u00f3d do strojov\u00fdch instrukc\u00ed, vkl\u00e1d\u00e1 ho do pam\u011bti p\u0159i b\u011bhu a zaji\u0161\u0165uje automatickou konverzi datov\u00fdch typ\u016f mezi JavaScriptem a C. Bylo zaznamen\u00e1no, \u017ee re\u017eie p\u0159i vol\u00e1n\u00ed zkompilovan\u00e9ho C k\u00f3du byla minimalizov\u00e1na a vedla k latenci na \u00farovni p\u0159ibli\u017en\u011b 2 nanosekund na ka\u017ed\u00fd hovor extern\u00edch C funkc\u00ed. Jako p\u0159\u00edklad bylo uk\u00e1z\u00e1no, jak lze p\u0159\u00edmo volat knihovny FFmpeg pro p\u0159evod kr\u00e1tk\u00fdch vide\u00ed \u2014 d\u00edky vylou\u010den\u00ed takov\u00fdch operac\u00ed jako je spou\u0161t\u011bn\u00ed samostatn\u00e9ho procesu a alokace pam\u011bti pro ka\u017ed\u00e9 video, dalo se celkov\u00e9 \u010dasov\u00e9 obdob\u00ed testovac\u00ed \u00falohy p\u0159i pou\u017eit\u00ed bun:ffi zkr\u00e1tit t\u0159ikr\u00e1t. <\/p>\n
Nav\u00edc, ve verzi Bun 1.1.29 byla p\u0159id\u00e1na podpora N-API (napi) pro k\u00f3d v jazyce C, d\u00edky kter\u00e9 mohou handlery napsan\u00e9 v jazyce C vracet objekty, \u0159et\u011bzce, pole a dal\u0161\u00ed neprimitivn\u00ed hodnoty JavaScriptu, krom\u011b typ\u016f specifick\u00fdch pro jazyk C, jako je int a float. Mechanismus vol\u00e1n\u00ed handler\u016f v jazyce C funguje i p\u0159i dynamick\u00e9m na\u010d\u00edt\u00e1n\u00ed jak\u00fdchkoli knihoven s C ABI, bez ohledu na to, v jak\u00e9m jazyce byly p\u016fvodn\u011b naps\u00e1ny (C++, Rust, Zig atd.), co\u017e umo\u017e\u0148uje volat funkce poskytovan\u00e9 t\u011bmito knihovnami p\u0159\u00edmo z JavaScriptu bez samostatn\u00e9 f\u00e1ze p\u0159ebudov\u00e1n\u00ed. Nap\u0159\u00edklad nyn\u00ed je mo\u017en\u00e9 volat syst\u00e9mov\u00e9 API z JavaScriptu. <\/p>\n
P\u0159ipom\u00edn\u00e1me, \u017ee projekt Bun se vyv\u00edj\u00ed s ohledem na zaji\u0161t\u011bn\u00ed kompatibility se serverov\u00fdmi aplikacemi napsan\u00fdmi pro Node.js a podporuje v\u011bt\u0161inu API Node.js. Sou\u010d\u00e1st\u00ed platformy je sada n\u00e1stroj\u016f pro tvorbu a spou\u0161t\u011bn\u00ed aplikac\u00ed v jazyc\u00edch JavaScript a TypeScript, jako\u017e i runtime pro prov\u00e1d\u011bn\u00ed JavaScriptov\u00fdch aplikac\u00ed bez prohl\u00ed\u017ee\u010de, bal\u00ed\u010dkov\u00fd mana\u017eer (kompatibiln\u00ed s NPM), n\u00e1stroje pro prov\u00e1d\u011bn\u00ed test\u016f a syst\u00e9m pro sestaven\u00ed samostatn\u00fdch bal\u00ed\u010dk\u016f. V oblasti v\u00fdkonu Bun v\u00fdrazn\u011b p\u0159ed\u010d\u00ed Deno a Node.js (v testech zalo\u017een\u00fdch na frameworku React platforma Bun p\u0159ekon\u00e1v\u00e1 Deno dvakr\u00e1t a t\u00e9m\u011b\u0159 p\u011btkr\u00e1t Node.js). K\u00f3d Bun je naps\u00e1n v jazyc\u00edch Zig a C++ a \u0161\u00ed\u0159\u00ed se pod licenc\u00ed MIT. Pro prov\u00e1d\u011bn\u00ed JavaScriptu je vyu\u017e\u00edv\u00e1n JavaScriptov\u00fd engine JavaScriptCore a komponenty projektu WebKit s dodate\u010dn\u00fdmi z\u00e1platami. \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. 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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"