Franc\u00fazsky matematik Fabrice Bellard, zakladate\u013e projektov QEMU, FFmpeg, BPG, QuickJS, TinyGL a TinyCC, publikoval nov\u00fd JavaScript engine pre zabudovan\u00e9 syst\u00e9my \u2014 Micro QuickJS, ktor\u00fd je schopn\u00fd kompilova\u0165 a vykon\u00e1va\u0165 JavaScript programy so spotrebou len 10 KB RAM. Spolu so C kni\u017enicou engine zaber\u00e1 pribli\u017ene 100 KB trvalej pam\u00e4te. Je mo\u017en\u00e1 kompil\u00e1cia JavaScriptu do bajtov\u00e9ho k\u00f3du a samostatn\u00e9 spustenie bajtov\u00e9ho k\u00f3du. K\u00f3d projektu je nap\u00edsan\u00fd v jazyku C a je distribuovan\u00fd pod licenciou MIT. <\/p>\n
Engine podporuje podmno\u017einu jazyka JavaScript, ktor\u00e1 je bl\u00edzka \u0161pecifik\u00e1cii ECMAScript 5 (ES2019), ale kladie pr\u00edsnej\u0161ie po\u017eiadavky na k\u00f3d a neumo\u017e\u0148uje pou\u017e\u00edvanie niektor\u00fdch neefekt\u00edvnych alebo chybov\u00fdch JavaScript kon\u0161trukci\u00ed. Napr\u00edklad glob\u00e1lne premenn\u00e9 musia by\u0165 povinne deklarovan\u00e9 pomocou k\u013e\u00fa\u010dov\u00e9ho slova \"var\", pou\u017e\u00edvanie \"with\" je zak\u00e1zan\u00e9, polia nem\u00f4\u017eu ma\u0165 pr\u00e1zdne miesta, nemo\u017en\u00e1 je inicializ\u00e1cia pri deklar\u00e1cii typu \"new Number(1)\", a z eval nie je mo\u017en\u00fd pr\u00edstup k lok\u00e1lnym premenn\u00fdm. <\/p>\n
V\u00fdkon Micro QuickJS je bl\u00edzky engine QuickJS, ktor\u00fd vyv\u00edja Fabrice od roku 2019. V Micro QuickJS je zapojen\u00e1 \u010das\u0165 k\u00f3du z engine QuickJS, ale architekt\u00fara sa do zna\u010dnej miery l\u00ed\u0161i a je navrhnut\u00e1 na minim\u00e1lnu spotrebu pam\u00e4te. Napr\u00edklad v Micro QuickJS je pou\u017eit\u00fd trasovac\u00ed garbage collector, zatia\u013e \u010do v QuickJS je pou\u017eit\u00fd po\u010d\u00edtanie referenci\u00ed. Op\u00fdtav\u00e9 n\u00e1klady garbage collectora predstavuj\u00fa iba nieko\u013eko bitov na ka\u017ed\u00fd pridelen\u00fd blok pam\u00e4te. Na pridelenie pam\u00e4te sa pou\u017e\u00edva vlastn\u00fd alok\u00e1tor, ktor\u00fd nez\u00e1vis\u00ed od kni\u017enicovej funkcie malloc(). <\/p>\n
\u010eal\u0161ie rozdiely od QuickJS: nepou\u017e\u00edva z\u00e1sobn\u00edk; in\u00e9 intern\u00e9 zobrazenie objektov; ukladanie re\u0165azcov v k\u00f3dovan\u00ed UTF-8; generovanie \u0161tandardnej kni\u017enice po\u010das kompil\u00e1cie a jej ukladanie v trvalej pam\u00e4ti s vytvoren\u00edm v RAM iba nieko\u013ek\u00fdch objektov; parser, ktor\u00fd je bl\u00edzky QuickJS, ale nepou\u017e\u00edva rekurziu; kombinovanie v jednom priechode generovania bytk\u00f3du a optimaliz\u00e1cie (v QuickJS je nieko\u013eko priechodov na optimaliz\u00e1ciu). virtu\u00e1lna ma\u0161ina<\/a>Fran\u00e7aisky matematik Fabrice Bellard, zakladate\u013e projektov QEMU, FFmpeg, BPG, QuickJS, TinyGL a TinyCC, publikoval nov\u00fd JavaScriptov\u00fd engine pre zabudovan\u00e9 syst\u00e9my - Micro QuickJS. \u0424\u0440\u0430\u043d\u0446\u0443\u0437\u0441\u043a\u0438\u0439 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u043a \u0424\u0430\u0431\u0440\u0438\u0441 \u0411\u0435\u043b\u043b\u0430\u0440 (Fabrice Bellard), \u043e\u0441\u043d\u043e\u0432\u0430\u0432\u0448\u0438\u0439 \u0432 \u0441\u0432\u043e\u0451 \u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0435\u043a\u0442\u044b QEMU, FFmpeg, BPG, QuickJS, TinyGL \u0438 TinyCC, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043d\u043e\u0432\u044b\u0439 JavaScript-\u0434\u0432\u0438\u0436\u043e\u043a \u0434\u043b\u044f \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c — Micro QuickJS, \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b\u0439 \u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c JavaScript-\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b, \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u044f\u044f \u0432\u0441\u0435\u0433\u043e 10 \u041a\u0411 \u041e\u0417\u0423. \u0412\u043c\u0435\u0441\u0442\u0435 \u0441 \u0421\u0438-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u043e\u0439 \u0434\u0432\u0438\u0436\u043e\u043a \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e 100 \u041a\u0411 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438. \u0412\u043e\u0437\u043c\u043e\u0436\u043d\u0430 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u044f JavaScript \u0432 \u0431\u0430\u0439\u0442\u043a\u043e\u0434 \u0438 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0437\u0430\u043f\u0443\u0441\u043a […]<\/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-152471","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":"Zakladate\u013e QEMU a FFmpeg publikoval JavaScriptov\u00fd engine Micro QuickJS | ProHoster","description":"\ud83e\udd47Zakladate\u013e QEMU a FFmpeg publikoval JavaScriptov\u00fd engine Micro QuickJS | ProHoster","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/osnovatel-qemu-i-ffmpeg-opublikoval-javascript-dvizhok-micro-quickjs","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041e\u0441\u043d\u043e\u0432\u0430\u0442\u0435\u043b\u044c QEMU \u0438 FFmpeg \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b JavaScript-\u0434\u0432\u0438\u0436\u043e\u043a Micro QuickJS | ProHoster","og:description":"\u0424\u0440\u0430\u043d\u0446\u0443\u0437\u0441\u043a\u0438\u0439 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u043a \u0424\u0430\u0431\u0440\u0438\u0441 \u0411\u0435\u043b\u043b\u0430\u0440 (Fabrice Bellard), \u043e\u0441\u043d\u043e\u0432\u0430\u0432\u0448\u0438\u0439 \u0432 \u0441\u0432\u043e\u0451 \u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0435\u043a\u0442\u044b QEMU, FFmpeg, BPG, QuickJS, TinyGL \u0438 TinyCC, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043d\u043e\u0432\u044b\u0439 JavaScript-\u0434\u0432\u0438\u0436\u043e\u043a \u0434\u043b\u044f \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c - 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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"