{"id":143780,"date":"2025-09-18T11:11:56","date_gmt":"2025-09-18T09:11:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovan-standart-webassembly-3-0"},"modified":"2025-09-18T11:11:56","modified_gmt":"2025-09-18T09:11:56","slug":"opublikovan-standart-webassembly-3-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/opublikovan-standart-webassembly-3-0","title":{"rendered":"Megjelent a WebAssembly 3.0 szabv\u00e1ny","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A W3C konzorcium bejelentette a WebAssembly 3.0 \u00e9s a hozz\u00e1 tartoz\u00f3 API szabv\u00e1nyos\u00edt\u00e1s\u00e1nak elk\u00e9sz\u00fclt\u00e9t, amely lehet\u0151v\u00e9 teszi a k\u00fcl\u00f6nf\u00e9le b\u00f6ng\u00e9sz\u0151k \u00e9s hardverplatformok k\u00f6z\u00f6tt hordozhat\u00f3, nagy teljes\u00edtm\u00e9ny\u0171 alkalmaz\u00e1sok l\u00e9trehoz\u00e1s\u00e1t. A WebAssembly b\u00f6ng\u00e9sz\u0151f\u00fcggetlen univerz\u00e1lis alacsony szint\u0171 k\u00f6zbens\u0151 k\u00f3dot biztos\u00edt, amely lehet\u0151v\u00e9 teszi k\u00fcl\u00f6nb\u00f6z\u0151 programoz\u00e1si nyelvekb\u0151l sz\u00e1rmaz\u00f3 alkalmaz\u00e1sok futtat\u00e1s\u00e1t.      <\/p>\n<p>A WebAssembly technol\u00f3gia olyan b\u00f6ng\u00e9sz\u0151ben futtathat\u00f3 feladatok elv\u00e9gz\u00e9s\u00e9re alkalmazhat\u00f3, amelyek nagy teljes\u00edtm\u00e9nyt ig\u00e9nyelnek, p\u00e9ld\u00e1ul vide\u00f3k\u00f3dol\u00e1s, hangfeldolgoz\u00e1s, grafika- \u00e9s 3D-manipul\u00e1ci\u00f3, j\u00e1t\u00e9kk\u00e9sz\u00edt\u00e9s, kriptogr\u00e1fiai m\u0171veletek \u00e9s matematikai sz\u00e1m\u00edt\u00e1sok, az\u00e1ltal, hogy a b\u00f6ng\u00e9sz\u0151ben futtatjuk a k\u00fcl\u00f6nb\u00f6z\u0151 programoz\u00e1si nyelvek (p\u00e9ld\u00e1ul C\/C++) \u00e1ltal \u00edrt k\u00f3dot. A WebAssembly JIT haszn\u00e1lat\u00e1val a nat\u00edv k\u00f3dhoz k\u00f6zeli teljes\u00edtm\u00e9nyt \u00e9rhet\u00fcnk el.    <\/p>\n<p>A WebAssembly egyik alapvet\u0151 feladata a hordozhat\u00f3s\u00e1g biztos\u00edt\u00e1sa, a viselked\u00e9s el\u0151rejelezhet\u0151s\u00e9ge, valamint a k\u00f3d v\u00e9grehajt\u00e1s\u00e1nak azonoss\u00e1ga k\u00fcl\u00f6nb\u00f6z\u0151 platformokon. A WebAssembly nem korl\u00e1toz\u00f3dik a b\u00f6ng\u00e9sz\u0151kre, hanem egy univerz\u00e1lis platformk\u00e9nt is el\u0151mozd\u00edtj\u00e1k a k\u00f3d biztons\u00e1gos v\u00e9grehajt\u00e1s\u00e1ra b\u00e1rmilyen infrastrukt\u00far\u00e1ban, oper\u00e1ci\u00f3s rendszerben \u00e9s eszk\u00f6z\u00f6n.    <\/p>\n<p>El\u00e9rhet\u0151k a k\u00f6vetkez\u0151 specifik\u00e1ci\u00f3k:  <\/p>\n<ul>\n<li class=\"l\"> WebAssembly Core \u2014 le\u00edrja a WebAssembly k\u00f6ztes k\u00f3d futtat\u00e1s\u00e1ra szolg\u00e1l\u00f3 alacsony szint\u0171 virtu\u00e1lis g\u00e9pet. A WebAssembly-hez kapcsol\u00f3d\u00f3 er\u0151forr\u00e1sok &#171;.wasm&#187; form\u00e1tumban \u00e9rkeznek, amely hasonl\u00edt a Java &#171;.class&#187; f\u00e1jljaihoz, \u00e9s statikus adatokat, valamint a kezel\u0151 k\u00f3d szegmenseit tartalmaz a megfelel\u0151 adatokhoz.   <\/li>\n<li class=\"l\"> A WebAssembly JavaScript API \u2014 lehet\u0151v\u00e9 teszi az API integr\u00e1l\u00e1s\u00e1t a JavaScript-tel. Lehet\u0151v\u00e9 teszi \u00e9rt\u00e9kek lek\u00e9r\u00e9s\u00e9t \u00e9s param\u00e9terek \u00e1tad\u00e1s\u00e1t a WebAssembly funkci\u00f3inak. A WebAssembly v\u00e9grehajt\u00e1sa megfelel a JavaScript biztons\u00e1gi modellj\u00e9nek, \u00e9s minden interakci\u00f3 a f\u0151 rendszerrel a JavaScript k\u00f3d v\u00e9grehajt\u00e1s\u00e1hoz hasonl\u00f3 m\u00f3don t\u00f6rt\u00e9nik.\n<li class=\"l\">  WebAssembly Web API \u2014 a Promise mechanizmus\u00e1n alapul\u00f3 programoz\u00e1si interf\u00e9szt hat\u00e1roz meg a &#171;.wasm&#187; er\u0151forr\u00e1sok lek\u00e9r\u00e9s\u00e9re \u00e9s v\u00e9grehajt\u00e1s\u00e1ra. A WebAssembly er\u0151forr\u00e1sok form\u00e1tuma optimaliz\u00e1lt a v\u00e9grehajt\u00e1s kezdet\u00e9hez, an\u00e9lk\u00fcl, hogy meg kellene v\u00e1rni a f\u00e1jl teljes bet\u00f6lt\u00e9s\u00e9t, ami n\u00f6veli a webalkalmaz\u00e1sok v\u00e1laszk\u00e9szs\u00e9g\u00e9t.\n<li class=\"l\"> A WASI API \u2014 modul\u00e1ris rendszerszint\u0171 interf\u00e9szt hat\u00e1roz meg a WebAssembly b\u00f6ng\u00e9sz\u0151k\u00f6n k\u00edv\u00fcli futtat\u00e1s\u00e1ra, \u00e9s hozz\u00e1f\u00e9r\u00e9st biztos\u00edt olyan er\u0151forr\u00e1sokhoz, mint a f\u00e1jlok, h\u00e1l\u00f3zati kapcsolatok, \u00e1lombrekvenci\u00e1k gener\u00e1torai \u00e9s rendszer\u00f3r\u00e1k.    <\/ul>\n<p>Megjegyzend\u0151, hogy az \u00faj szabv\u00e1nyv\u00e1ltozatban jelent\u0151sen javult a magas szint\u0171 programoz\u00e1si nyelvek WebAssembly-be t\u00f6rt\u00e9n\u0151 ford\u00edt\u00e1s\u00e1nak t\u00e1mogat\u00e1sa. P\u00e9ld\u00e1ul lehet\u0151s\u00e9g van WebAssembly-be t\u00f6rt\u00e9n\u0151 ford\u00edt\u00e1sra olyan nyelveken, mint a Java, OCaml, Scala, Kotlin, Scheme \u00e9s Dart. A WebAssembly 3.0-ra vonatkoz\u00f3 legfontosabb v\u00e1ltoz\u00e1sok a m\u00e1sodik verzi\u00f3hoz k\u00e9pest:    <\/p>\n<ul>\n<li class=\"l\"> Bevezet\u00e9sre ker\u00fclt a 64 bites c\u00edmt\u00e9r t\u00e1mogat\u00e1sa. A mem\u00f3ria c\u00edmz\u00e9shez mostant\u00f3l i64 t\u00edpust is haszn\u00e1lhatunk, nemcsak i32-t, ami az alkalmaz\u00e1sok sz\u00e1m\u00e1ra el\u00e9rhet\u0151 c\u00edmtartom\u00e1nyt 4 GB-r\u00f3l 16 EB-ra n\u00f6veli (b\u00f6ng\u00e9sz\u0151ben a korl\u00e1toz\u00e1s 16 GB-ra van \u00e1ll\u00edtva).\n<li class=\"l\"> Lehet\u0151s\u00e9g ny\u00edlt egy WebAssembly modulon bel\u00fcl t\u00f6bb mem\u00f3ria objektum egyidej\u0171 haszn\u00e1lat\u00e1ra \u00e9s k\u00fcl\u00f6nb\u00f6z\u0151 c\u00edmtartom\u00e1nyokkal val\u00f3 munk\u00e1ra. T\u00f6bbek k\u00f6z\u00f6tt lehet\u0151v\u00e9 v\u00e1lt az adatok m\u00e1sol\u00e1sa a k\u00fcl\u00f6nb\u00f6z\u0151 c\u00edmtartom\u00e1nyokban elhelyezett mem\u00f3ria objektumok p\u00e9ld\u00e1nyai k\u00f6z\u00f6tt.\n<li class=\"l\"> Bevezet\u00e9sre ker\u00fclt a szem\u00e9tgy\u0171jt\u00e9s t\u00e1mogat\u00e1sa. A kor\u00e1bban el\u00e9rhet\u0151 line\u00e1ris mem\u00f3ria mellett egy k\u00fcl\u00f6n t\u00e1rol\u00f3t\u00edpust k\u00edn\u00e1lunk, amelyet automatikusan kezel a szem\u00e9tgy\u0171jt\u0151. A ford\u00edt\u00f3 mostant\u00f3l k\u00fcl\u00f6nb\u00f6z\u0151 adatstrukt\u00far\u00e1kat, t\u00f6mb\u00f6ket \u00e9s v\u00e1ltoz\u00f3kat haszn\u00e1lhat, amelyek mem\u00f3riafoglal\u00e1s\u00e1\u00e9rt \u00e9s \u00e9lettartamkezel\u00e9s\u00e9\u00e9rt a WebAssembly felel.\n<li class=\"l\"> Bevezet\u00e9sre ker\u00fclt a t\u00edpuskulcsok t\u00e1mogat\u00e1sa, amelyek lehet\u0151v\u00e9 teszik a refer\u00e1lt \u00e9rt\u00e9k pontos strukt\u00far\u00e1j\u00e1nak le\u00edr\u00e1s\u00e1t, ez\u00e1ltal elker\u00fclve a v\u00e9grehajt\u00e1s sor\u00e1n sz\u00fcks\u00e9ges tov\u00e1bbi ellen\u0151rz\u00e9seket. T\u00e1mogatott a szubt\u00edpusok, a t\u00edpusok rekurzi\u00f3ja, valamint a t\u00edpusk\u00f6vetelm\u00e9nyek \u00e9s hat\u00e1rok n\u00e9lk\u00fcli biztons\u00e1gos funkci\u00f3referenci\u00e1k haszn\u00e1lata.\n<li class=\"l\"> A farokh\u00edv\u00e1sok (Tail call) t\u00e1mogat\u00e1sa is bevezet\u00e9sre ker\u00fclt, amelyek sor\u00e1n a jelenlegi funkci\u00f3 azonnal befejezi a v\u00e9grehajt\u00e1st egy m\u00e1sik funkci\u00f3 h\u00edv\u00e1sa ut\u00e1n, an\u00e9lk\u00fcl, hogy helyet foglalna el a stacken.\n<li class=\"l\"> Bevezet\u00e9sre ker\u00fclt a kiv\u00e9telek kezel\u00e9s\u00e9nek t\u00e1mogat\u00e1sa.\n<li class=\"l\"> Bevezet\u00e9sre ker\u00fclt a 'laz\u00edtott' (relaxed) vektori SIMD utas\u00edt\u00e1sok t\u00e1mogat\u00e1sa, amelyek lehet\u0151v\u00e9 teszik a magasabb teljes\u00edtm\u00e9ny el\u00e9r\u00e9s\u00e9t a szigor\u00fa szemin\u00e1riumok mell\u0151z\u00e9s\u00e9vel minden hardverplatformon.\n<li class=\"l\"> Bevezet\u00e9sre ker\u00fclt a determinisztikus v\u00e9grehajt\u00e1si profilok t\u00e1mogat\u00e1sa, amelyek meghat\u00e1rozz\u00e1k a jelenlegi platformt\u00f3l f\u00fcggetlen viselked\u00e9st azokn\u00e1l az utas\u00edt\u00e1sokn\u00e1l, amelyek v\u00e9grehajt\u00e1si eredm\u00e9nyei platformonk\u00e9nt elt\u00e9rhetnek (lebeg\u0151pontos m\u0171veletek, NaN \u00e9rt\u00e9k visszaad\u00e1sa, laz\u00e1bb vektoriz\u00e1lt utas\u00edt\u00e1sok). A profil kiv\u00e1laszt\u00e1sakor a Wasm biztos\u00edtja a determinisztikus viselked\u00e9st, reproduk\u00e1lhat\u00f3s\u00e1got \u00e9s hordozhat\u00f3s\u00e1got.\n<li class=\"l\"> A szintaxis hozz\u00e1adva a saj\u00e1t annot\u00e1ci\u00f3k l\u00e9trehoz\u00e1s\u00e1hoz, amelyek lehet\u0151v\u00e9 teszik tov\u00e1bbi inform\u00e1ci\u00f3k csatol\u00e1s\u00e1t a WebAssembly k\u00f3dhoz. Kor\u00e1bban a felhaszn\u00e1l\u00f3i szekci\u00f3k t\u00e1mogat\u00e1sa, amelyek lehet\u0151s\u00e9get adtak \u00f6n\u00e1ll\u00f3 inform\u00e1ci\u00f3k t\u00e1rol\u00e1s\u00e1ra, megvolt a WebAssembly bin\u00e1ris form\u00e1tum\u00e1ban, de hi\u00e1nyzott a WebAssembly sz\u00f6veges form\u00e1tum\u00e1b\u00f3l. Most lehet\u0151s\u00e9g van ilyen inform\u00e1ci\u00f3kat hozz\u00e1adni olvashat\u00f3 \u00e9s szerkeszthet\u0151 form\u00e1ban.\n<li class=\"l\"> A JavaScript API-ban be\u00e9p\u00edtett funkci\u00f3k ker\u00fcltek hozz\u00e1ad\u00e1sra a karakterl\u00e1ncok kezel\u00e9s\u00e9hez. Kor\u00e1bban a JavaScript karakterl\u00e1ncokat csak k\u00fcls\u0151 hivatkoz\u00e1sokk\u00e9nt lehetett \u00e1tadni a WebAssembly-nek, mostant\u00f3l azonban k\u00f6zvetlen\u00fcl hivatkozhatunk a karakterl\u00e1ncokra \u00e9s manipul\u00e1lhatjuk azokat a WebAssembly-n bel\u00fcl.      <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63899\">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\u0431\u044a\u044f\u0432\u0438\u043b \u043e \u0433\u043e\u0442\u043e\u0432\u043d\u043e\u0441\u0442\u0438 \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 3.0 \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. \u0422\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f WebAssembly 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