Pe platforma Bun, dezvoltat\u0103 ca o alternativ\u0103 la Node.js \u0219i destinat\u0103 execu\u021biei izolate a aplica\u021biilor scrise \u00een JavaScript, JSX \u0219i TypeScript, a fost implementat\u0103 o func\u021bionalitate experimental\u0103 de compilare \u0219i execu\u021bie a handler-elor scrise \u00een limbajul C. Anterior, pentru a apela codul de nivel sc\u0103zut, era necesar fie s\u0103 cre\u0103m extensii N-API, fie s\u0103 compil\u0103m codul \u00een format WebAssembly (WASM\/WASI), ceea ce complica dezvoltarea \u0219i impunea anumite restric\u021bii. Acum, codul \u00een limbajul C poate fi \u00eencorporat direct \u00een JavaScript \u0219i compilat la cerere folosind compilatorul TinyCC, precum \u0219i conectat la biblioteci dinamice. import { cc } from 'bun:ffi'; export const { symbols: { hello }, } = cc({ source: '.\/hello.c', symbols: { hello: { returns: 'void', args: [], }, }, }); hello(); <\/p>\n
Pentru a lucra cu limbajul C se folose\u0219te un strat bun:ffi, care compileaz\u0103 codul surs\u0103 \u00een instruc\u021biuni ma\u0219in\u0103, \u00eel integreaz\u0103 \u00een memorie la execu\u021bie \u0219i asigur\u0103 conversia automat\u0103 a tipurilor de date \u00eentre JavaScript \u0219i C. Se noteaz\u0103 c\u0103 overhead-ul la apelarea codului C compilat este minimizat, rezult\u00e2nd o \u00eent\u00e2rziere de aproximativ 2 nanosecunde pentru fiecare apel al func\u021biilor externe C. Ca exemplu, se arat\u0103 cum se pot apela direct bibliotecile FFmpeg pentru transformarea videoclipurilor scurte \u2014 prin eliminarea unor opera\u021biuni precum bifurcarea unui proces separat \u0219i alocarea de memorie pentru fiecare videoclip, timpul total de execu\u021bie al sarcinii testate a reu\u0219it s\u0103 fie redus de trei ori folosind bun:ffi. <\/p>\n
\u00cen plus, \u00een versiunea Bun 1.1.29, pentru codul scris \u00een C a fost ad\u0103ugat\u0103 suportul pentru N-API (napi), care permite handlerelor scrise \u00een C s\u0103 returneze obiecte, \u0219iruri de caractere, aranjamente \u0219i alte valori non-primitive JavaScript, \u00een afar\u0103 de tipurile specifice limbajului C, cum ar fi int \u0219i float. Mecanismul de apelare a handlerelor \u00een C func\u021bioneaz\u0103 \u0219i \u00een timpul \u00eenc\u0103rc\u0103rii dinamice a oric\u0103ror biblioteci cu C ABI, indiferent de limbajul \u00een care au fost scrise ini\u021bial (C++, Rust, Zig etc.), ceea ce permite apelarea din codul JavaScript a func\u021biilor furnizate de aceste biblioteci f\u0103r\u0103 o etap\u0103 separat\u0103 de recompilare. De exemplu, acum se poate apela din JavaScript API-urile sistemului. <\/p>\n
Amintim c\u0103 proiectul Bun se dezvolt\u0103 cu scopul de a asigura compatibilitatea cu aplica\u021biile server, scrise pentru Node.js, \u0219i suport\u0103 cea mai mare parte a API-ului Node.js. Platforma include un set de unelte pentru crearea \u0219i rularea aplica\u021biilor scrise \u00een limbajele JavaScript \u0219i TypeScript, precum \u0219i un runtime pentru executarea aplica\u021biilor JavaScript f\u0103r\u0103 browser, un manager de pachete (compatibil cu NPM), un instrumentar pentru rularea testelor \u0219i un sistem de construire a pachetelor autonome. \u00cen ceea ce prive\u0219te performan\u021ba, Bun dep\u0103\u0219e\u0219te semnificativ Deno \u0219i Node.js (\u00een teste bazate pe frameworkul React, platforma Bun este de 2 ori mai rapid\u0103 dec\u00e2t Deno \u0219i aproape de 5 ori mai rapid\u0103 dec\u00e2t Node.js). Codul Bun este scris \u00een limbajele Zig \u0219i C++ \u0219i este distribuit sub licen\u021ba MIT. Pentru executarea JavaScript-ului este utilizat motorul JavaScriptJavaScriptCore \u0219i componentele proiectului WebKit cu patchuri suplimentare. \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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Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"