{"id":152471,"date":"2025-12-23T23:12:03","date_gmt":"2025-12-23T21:12:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/osnovatel-qemu-i-ffmpeg-opublikoval-javascript-dvizhok-micro-quickjs"},"modified":"2025-12-23T23:12:03","modified_gmt":"2025-12-23T21:12:03","slug":"osnovatel-qemu-i-ffmpeg-opublikoval-javascript-dvizhok-micro-quickjs","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/osnovatel-qemu-i-ffmpeg-opublikoval-javascript-dvizhok-micro-quickjs","title":{"rendered":"Zakladatel QEMU a FFmpeg publikoval JavaScriptov\u00fd engine Micro QuickJS.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Francouzsk\u00fd matematik Fabrice Bellard, zakladatel projekt\u016f QEMU, FFmpeg, BPG, QuickJS, TinyGL a TinyCC, publikoval nov\u00fd JavaScriptov\u00fd engine pro vestav\u011bn\u00e9 syst\u00e9my \u2014 Micro QuickJS, kter\u00fd dok\u00e1\u017ee kompilovat a vykon\u00e1vat JavaScriptov\u00e9 programy, p\u0159i\u010dem\u017e spot\u0159ebov\u00e1v\u00e1 pouze 10 KB RAM. Spolu s C knihovnou zab\u00edr\u00e1 engine p\u0159ibli\u017en\u011b 100 KB trval\u00e9 pam\u011bti. Je mo\u017en\u00e9 kompilovat JavaScript do bytecode a prov\u00e9st jeho samostatn\u00e9 spu\u0161t\u011bn\u00ed. K\u00f3d projektu je naps\u00e1n v jazyce C a je distribuov\u00e1n pod licenc\u00ed MIT. <\/p>\n

Engine podporuje podmno\u017einu jazyka JavaScript, bl\u00edzkou specifikaci ECMAScript 5 (ES2019), av\u0161ak klade p\u0159\u00edsn\u011bj\u0161\u00ed po\u017eadavky na k\u00f3d a nedovoluje pou\u017eit\u00ed n\u011bkter\u00fdch neefektivn\u00edch nebo chybov\u00fdch konstrukc\u00ed JavaScriptu. Nap\u0159\u00edklad glob\u00e1ln\u00ed prom\u011bnn\u00e9 mus\u00ed b\u00fdt v\u017edy deklarov\u00e1ny pomoc\u00ed kl\u00ed\u010dov\u00e9ho slova \u201evar\u201c, pou\u017eit\u00ed \u201ewith\u201c je zak\u00e1z\u00e1no, pole nemohou obsahovat pr\u00e1zdn\u00e9 hodnoty, a nen\u00ed mo\u017en\u00e9 inicializovat p\u0159i deklaraci ve tvaru \u201enew Number(1)\u201c, p\u0159i\u010dem\u017e z eval nen\u00ed mo\u017en\u00fd p\u0159\u00edstup k lok\u00e1ln\u00edm prom\u011bnn\u00fdm. <\/p>\n

V\u00fdkon Micro QuickJS je bl\u00edzk\u00fd enginu QuickJS, kter\u00fd je vyv\u00edjen Fabrice od roku 2019. V Micro QuickJS je pou\u017eita \u010d\u00e1st k\u00f3du z enginu QuickJS, ale architektura se do zna\u010dn\u00e9 m\u00edry li\u0161\u00ed a je navr\u017eena pro minim\u00e1ln\u00ed spot\u0159ebu pam\u011bti. Nap\u0159\u00edklad v Micro QuickJS je pou\u017eit sledovac\u00ed garbage collector, zat\u00edmco v QuickJS je pou\u017e\u00edvan\u00e9 po\u010d\u00edt\u00e1n\u00ed referenc\u00ed. P\u0159\u00eddavn\u00e9 n\u00e1klady na garbage collector \u010din\u00ed pouze n\u011bkolik bit\u016f na ka\u017ed\u00fd alokovan\u00fd blok pam\u011bti. Pro alokaci pam\u011bti je pou\u017eit vlastn\u00ed alok\u00e1tor, kter\u00fd nen\u00ed z\u00e1visl\u00fd na knihovn\u00ed funkci malloc(). <\/p>\n

Dal\u0161\u00ed rozd\u00edly od QuickJS: nevyu\u017e\u00edv\u00e1 z\u00e1sobn\u00edk; jin\u00e9 vnit\u0159n\u00ed zastoupen\u00ed objekt\u016f; ukl\u00e1d\u00e1n\u00ed \u0159et\u011bzc\u016f v k\u00f3dov\u00e1n\u00ed UTF-8; generov\u00e1n\u00ed standardn\u00ed knihovny b\u011bhem kompilace a jej\u00ed ulo\u017een\u00ed v trval\u00e9 pam\u011bti p\u0159i vytv\u00e1\u0159en\u00ed v RAM pouze n\u011bkolika objekt\u016f; parser bl\u00edzk\u00fd QuickJS, ale nevyu\u017e\u00edvaj\u00edc\u00ed rekurzi; kombinace generace bajtk\u00f3du a optimalizace v jednom pr\u016fchodu (v QuickJS prob\u00edh\u00e1 n\u011bkolik pr\u016fchod\u016f pro optimalizaci). virtu\u00e1ln\u00ed stroj<\/a>Francouzsk\u00fd matematik Fabrice Bellard, zakladatel projekt\u016f QEMU, FFmpeg, BPG, QuickJS, TinyGL a TinyCC, publikoval nov\u00fd JavaScriptov\u00fd engine pro vestav\u011bn\u00e9 syst\u00e9my - Micro QuickJS.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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":"\ud83e\udd47Zakladatel QEMU a FFmpeg publikoval JavaScriptov\u00fd engine Micro QuickJS | ProHoster","description":"\ud83e\udd47Zakladatel QEMU a FFmpeg publikoval JavaScriptov\u00fd engine Micro QuickJS | ProHoster","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/osnovatel-qemu-i-ffmpeg-opublikoval-javascript-dvizhok-micro-quickjs","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","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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