{"id":55147,"date":"2020-01-13T00:00:00","date_gmt":"2020-01-12T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/pervyj-vypusk-wasm3-bystrogo-interpretatora-webassembly"},"modified":"2020-02-18T14:03:13","modified_gmt":"2020-02-18T11:03:13","slug":"pervyj-vypusk-wasm3-bystrogo-interpretatora-webassembly","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/pervyj-vypusk-wasm3-bystrogo-interpretatora-webassembly","title":{"rendered":"Megjelent a wasm3, a WebAssembly gyors \u00e9rtelmez\u0151je","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

El\u00e9rhet\u0151<\/a><\/noindex> els\u0151 kiad\u00e1s wasm3<\/a><\/noindex>, egy nagyon gyors interakt\u00edv WebAssembly k\u00f6ztes k\u00f3d \u00e9rtelmez\u0151, amely els\u0151sorban WebAssembly-alkalmaz\u00e1sok mikrokontrolleren \u00e9s olyan platformokon t\u00f6rt\u00e9n\u0151 v\u00e9grehajt\u00e1s\u00e1ra k\u00e9sz\u00fclt, ahol nincs JIT megval\u00f3s\u00edt\u00e1s WebAssembly-hez, nincs elegend\u0151 mem\u00f3ria a JIT m\u0171k\u00f6dtet\u00e9s\u00e9hez, vagy nem enged\u00e9lyezett a JIT megval\u00f3s\u00edt\u00e1s\u00e1hoz sz\u00fcks\u00e9ges v\u00e9grehajthat\u00f3 mem\u00f3riaoldalak l\u00e9trehoz\u00e1sa. A projekt k\u00f3dja C nyelven \u00edr\u00f3dott, \u00e9s terjeszt\u00e9sre ker\u00fcl<\/a><\/noindex> MIT licenc alatt \u00e1ll.<\/p>\n

A wasm3 tesztek<\/a><\/noindex> teljes\u00edti a WebAssembly 1.0 specifik\u00e1ci\u00f3val val\u00f3 kompatibilit\u00e1s tesztjeit, \u00e9s k\u00e9pes sok WASI-alkalmaz\u00e1s futtat\u00e1s\u00e1ra, amely csak 4-5-sz\u00f6r lassabb a JIT-motorokhoz k\u00e9pest (liftoff<\/a><\/noindex>, cranelift<\/a><\/noindex>) \u00e9s 11,5-sz\u00f6r lassabb a nat\u00edv k\u00f3d futtat\u00e1s\u00e1hoz. A t\u00f6bbi WebAssembly \u00e9rtelmez\u0151vel val\u00f3 \u00f6sszehasonl\u00edt\u00e1sban (wac<\/a><\/noindex>, life<\/a><\/noindex>, wasm-micro-runtime<\/a><\/noindex>) a wasm3 15,8-szor gyorsabbnak bizonyult.<\/p>\n

A wasm3 m\u0171k\u00f6d\u00e9s\u00e9hez 64Kb mem\u00f3ria sz\u00fcks\u00e9ges a k\u00f3dhoz \u00e9s 10Kb RAM, ami lehet\u0151v\u00e9 teszi a projekt sz\u00e1m\u00e1ra, hogy WebAssembly-re ford\u00edtott alkalmaz\u00e1sokat futtasson mikrokontrollereken<\/a><\/noindex>, mint az Arduino MKR*, Arduino Due, Particle Photon, ESP8266, ESP32, Air602 (W600), nRF52, nRF51 Blue Pill (STM32F103C8T6), MXChip AZ3166 (EMW3166),
\nMaix (K210), HiFive1 (E310), Fomu (ICE40UP5K) \u00e9s ATmega1284, valamint az x86, x64, ARM, MIPS, RISC-V \u00e9s Xtensa architekt\u00far\u00e1kon alapul\u00f3 alaplapokon \u00e9s sz\u00e1m\u00edt\u00f3g\u00e9peken. T\u00e1mogatott oper\u00e1ci\u00f3s rendszerek a Linux (bele\u00e9rtve az OpenWRT alap\u00fa routereket), Windows, macOS, Android \u00e9s iOS. A wasm3 WebAssembly k\u00f6ztes k\u00f3dra is leford\u00edthat\u00f3, ami lehet\u0151v\u00e9 teszi az \u00e9rtelmez\u0151 b\u00f6ng\u00e9sz\u0151ben val\u00f3 futtat\u00e1s\u00e1t vagy be\u00e1gyazott v\u00e9grehajt\u00e1s\u00e1t (self-hosting).<\/p>\n

A magas teljes\u00edtm\u00e9ny az \u00e9rtelmez\u0151ben alkalmazott Massey Meta Machine<\/a><\/noindex> (M3) technika r\u00e9v\u00e9n \u00e9rhet\u0151 el, amelyben a b\u00e1jt-k\u00f3d dek\u00f3dol\u00e1si k\u00f6lts\u00e9geinek cs\u00f6kkent\u00e9s\u00e9re el\u0151zetes ford\u00edt\u00e1s t\u00f6rt\u00e9nik a b\u00e1jt-k\u00f3db\u00f3l hat\u00e9konyabb m\u0171veletekk\u00e9, amelyek pszeudo-g\u00e9pk\u00f3dot gener\u00e1lnak, \u00e9s a verem-alap\u00fa virtu\u00e1lis g\u00e9p v\u00e9grehajt\u00e1si modellje \u00e1tform\u00e1l\u00f3dik egy hat\u00e9konyabb regiszter-alap\u00fa megk\u00f6zel\u00edt\u00e9ss\u00e9. Az M3 m\u0171veletei C-funkci\u00f3k, amelynek argumentumai a virtu\u00e1lis g\u00e9p regiszterei, amelyek visszavezethet\u0151k a CPU regiszterekre. A gyakran el\u0151fordul\u00f3 m\u0171velet-sorozatok optimaliz\u00e1l\u00e1sra \u00f6ssze vonhat\u00f3 m\u0171veletekk\u00e9 alakulnak.<\/p>\n

Tov\u00e1bbi megjegyz\u00e9sk\u00e9nt a kutat\u00e1s eredm\u00e9nyei<\/a><\/noindex> elterjed\u00e9se
\nWebAssembly a weben. Elemz\u0151k a legn\u00e9pszer\u0171bb 948 ezer weboldalt vizsg\u00e1lva az Alexa rangsora alapj\u00e1n meg\u00e1llap\u00edtott\u00e1k, hogy a WebAssembly 1639 oldalon haszn\u00e1latos (0,17%), azaz minden 600. weboldal egyike. A weboldalakon \u00f6sszesen 1950 WebAssembly modult azonos\u00edtottak, amelyek k\u00f6z\u00fcl 150 egyedi. A WebAssembly alkalmaz\u00e1s\u00e1nak ter\u00fclet\u00e9t vizsg\u00e1lva nem t\u00fal kedvez\u0151 k\u00f6vetkeztet\u00e9sekre jutottak — az esetek t\u00f6bb mint 50%-\u00e1ban a WebAssembly-t rosszindulat\u00fa c\u00e9lokra haszn\u00e1lt\u00e1k, p\u00e9ld\u00e1ul kriptovaluta b\u00e1ny\u00e1sz\u00e1sra (55,7%) \u00e9s rosszindulat\u00fa szkriptek k\u00f3dj\u00e1nak elrejt\u00e9s\u00e9re (0,2%). A WebAssembly legitim felhaszn\u00e1l\u00e1sa k\u00f6z\u00f6tt szerepelt a k\u00f6nyvt\u00e1rak futtat\u00e1sa (38,8%), j\u00e1t\u00e9kok k\u00e9sz\u00edt\u00e9se (3,5%) \u00e9s saj\u00e1t, nem JavaScript nyelven \u00edrt k\u00f3d v\u00e9grehajt\u00e1sa (0,9%). Az esetek 14,9%-\u00e1ban a WebAssembly-t a felhaszn\u00e1l\u00f3 azonos\u00edt\u00e1s\u00e1nak (fingerprinting) k\u00f6rnyezet\u00e9nek elemz\u00e9s\u00e9re haszn\u00e1lt\u00e1k.
\n

\"Megjelent<\/center><\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043f\u0435\u0440\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a wasm3, \u043e\u0447\u0435\u043d\u044c \u0431\u044b\u0441\u0442\u0440\u043e\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 WebAssembly, \u0433\u043b\u0430\u0432\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u0430\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0434\u043b\u044f \u0437\u0430\u043f\u0443\u0441\u043a\u0430 WebAssembly-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0430\u0445 \u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u0445, \u0434\u043b\u044f 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\u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":55148,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-55147","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47A wasm3 els\u0151 verzi\u00f3ja, a gyors WebAssembly-\u00e9rtelmez\u0151 | ProHoster","description":"Megjelent a wasm3 els\u0151 verzi\u00f3ja, nagyon 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