{"id":103828,"date":"2022-04-20T15:37:16","date_gmt":"2022-04-20T13:37:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-predvaritelnyj-variant-standarta-webassembly-2-0"},"modified":"2022-04-20T15:37:16","modified_gmt":"2022-04-20T13:37:16","slug":"dostupen-predvaritelnyj-variant-standarta-webassembly-2-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/dostupen-predvaritelnyj-variant-standarta-webassembly-2-0","title":{"rendered":"Na voljo je predogledna razli\u010dica standarda WebAssembly 2.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Konzorcij W3C je objavil osnutek nove specifikacije, ki standardizira vmesni kodo WebAssembly 2.0 in povezano API, ki omogo\u010da ustvarjanje visokozmogljivih aplikacij, prenosljivih med brskalniki in strojno opremo. WebAssembly nudi univerzalno nizkonivojsko vmesno kodo za izvajanje aplikacij, skompiliranih iz razli\u010dnih programskih jezikov, neodvisno od brskalnika. Z uporabo JIT za WebAssembly lahko dose\u017eemo raven zmogljivosti, ki je blizu nativnemu kodu.      <\/p>\n<p>Tehnologija WebAssembly se lahko uporablja za izvajanje nalog v brskalniku, ki zahtevajo visoko zmogljivost, kot so kodiranje videa, obdelava zvoka, manipulacija z grafiko in 3D, razvoj iger, kriptografske operacije in matemati\u010dna ra\u010dunanja z organizacijo izvajanja kod, napisanih v prevodnih jezikih, kot sta C\/C++.        <\/p>\n<p>Med glavnimi nalogami WebAssembly izstopa zagotavljanje prenosljivosti, predvidljivosti vedenja in enotnosti izvajanja kode na razli\u010dnih platformah. V zadnjem \u010dasu se WebAssembly tudi promovira kot univerzalna platforma za varno izvajanje kode v vseh infrastrukturi, operacijskih sistemih in napravah, ne omejeno le na brskanje.        <\/p>\n<p>W3C je objavil tri osnutke specifikacij WebAssembly 2.0:  <\/p>\n<ul>\n<li class=\"l\">  WebAssembly Core \u2014 opisuje nizkonavnno virtualno ma\u0161ino za izvajanje vmesnega koda WebAssembly. Sorodne z WebAssembly vire dostavljamo v formatu &#171;.wasm&#187;, ki je podoben datotekam &#171;.class&#187; v Javi in vsebuje stati\u010dne podatke ter segmente kode za delo s temi podatki.   <\/li>\n<li class=\"l\"> WebAssembly JavaScript Interface \u2014 zagotavlja API za integracijo z JavaScriptom. Omogo\u010da pridobivanje vrednosti in posredovanje parametrov v funkcije WebAssembly. Izvajanje WebAssembly ustreza varnostnemu modelu JavaScript in vse interakcije z glavno sistemom potekajo na podoben na\u010din kot izvajanje JavaScript kode.      <\/li>\n<li class=\"l\">  WebAssembly Web API \u2014 dolo\u010da programski vmesnik na osnovi mehanizma Promise za poizvedovanje in izvajanje virov &#171;.wasm&#187;. Format virov WebAssembly je optimiziran za za\u010detek izvajanja, ne da bi \u010dakali na popolno nalaganje datoteke, kar pove\u010duje odzivnost spletnih aplikacij.  <\/ul>\n<p>Glavne spremembe v WebAssembly 2.0 v primerjavi s prvo razli\u010dico standarda:    <\/p>\n<ul>\n<li class=\"l\"> Podpora vektorskemu tipu v128 in povezanimi vektorskimi ukazi, ki omogo\u010dajo hkratno izvajanje dejanj nad ve\u010d numeri\u010dnimi vrednostmi (SIMD, enojna navodila za ve\u010d podatkov).\n<li class=\"l\"> Mo\u017enost uvoza in izvoza spreminjajo\u010dih se (mutable) globalnih spremenljivk, ki omogo\u010dajo uporabo globalne povezave za vrednosti, kot so kazalci na sklad v C++.\n<li class=\"l\"> Novi ukazi za pretvorbo tipa float v int, ki namesto da generirajo izjemo pri prenapolnjenju rezultata, vrnejo minimalno ali maksimalno mo\u017eno vrednost (kar je potrebno za SIMD).\n<li class=\"l\"> Ukazi za raz\u0161iritev znaka celih \u0161tevil (pove\u010danje \u0161tevila bitov ob ohranjanju znaka in vrednosti).\n<li class=\"l\"> Podpora vra\u010danju ve\u010d vrednosti z blokov in funkcij (poleg prenosa ve\u010d parametrov v funkcije).\n<li class=\"l\"> Implementacija JavaScript funkcij BigInt64Array in BigUint64Array za pretvorbo med JavaScript tipom BigInt in predstavitvijo 64-bitnih celih \u0161tevil v WebAssembly.\n<li class=\"l\"> Podpora referen\u010dnim tipom (funcref in externref) in povezanimi ukazi (select, ref.null, ref.func in ref.is_null).\n<li class=\"l\"> Ukazi memory.copy, memory.fill, memory.init in data.drop za kopiranje podatkov med obmo\u010dji pomnilnika in \u010di\u0161\u010denje pomnilni\u0161kih regij.\n<li class=\"l\"> Ukazi za neposreden dostop in spremembo tabel (table.set, table.get, table.size, table.grow). Mo\u017enost ustvarjanja, uvoza in izvoza ve\u010d tabel v enem modulu. Funkcije za kopiranje\/izpolnjevanje tabel v paketnem na\u010dinu (table.copy, table.init in elem.drop).            <\/ul>\n<p>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57052\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c W3C \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0447\u0435\u0440\u043d\u043e\u0432\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043d\u043e\u0432\u043e\u0439 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438, \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u0439 \u043a\u043e\u0434 WebAssembly 2.0 \u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0439 \u0441 \u043d\u0438\u043c API, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0438\u043c\u044b\u0435 \u043c\u0435\u0436\u0434\u0443 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430\u043c\u0438 \u0438 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u044b\u043c\u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u043c\u0438. WebAssembly \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043d\u0435 \u0437\u0430\u0432\u0438\u0441\u044f\u0449\u0438\u0439 \u043e\u0442 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u044b\u0439 \u043d\u0438\u0437\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u044b\u0439 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u0439 \u043a\u043e\u0434 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0441\u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u044f\u0437\u044b\u043a\u043e\u0432 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0411\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044e JIT \u0434\u043b\u044f WebAssembly \u043c\u043e\u0436\u043d\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0443\u0440\u043e\u0432\u043d\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0431\u043b\u0438\u0437\u043a\u043e\u0433\u043e [&hellip;]<\/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-103828","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c W3C 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