{"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\/et\/blog\/news\/pervyj-vypusk-wasm3-bystrogo-interpretatora-webassembly","title":{"rendered":"Esimene v\u00e4ljaanne wasm3, kiire WebAssembly t\u00f5lgendaja","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Saadaval<\/a><\/noindex> esimene v\u00e4ljaanne wasm3<\/a><\/noindex>, v\u00e4ga kiire vahetoimingute t\u00f5lgendi WebAssembly jaoks, mis on peamiselt m\u00f5eldud WebAssembly rakenduste k\u00e4itamiseks mikroprotsessoritel ja platvormidel, kus JIT-i rakenduste toetuseks ei ole lahendust, m\u00e4lu korralikuks toimimiseks ei ole piisavalt v\u00f5i ei luba k\u00e4ideldavad m\u00e4lulehed, mis on vajalikud JIT-i t\u00e4itmiseks. Projekti kood on kirjutatud C keeles ja levitatakse<\/a><\/noindex> MIT litsentsi alusel.<\/p>\n

Wasm3 l\u00e4bib testid<\/a><\/noindex> WebAssembly 1.0 spetsifikatsiooni \u00fchilduvuse ja seda saab kasutada paljude WASI rakenduste k\u00e4itamiseks, tagades j\u00f5udluse, mis on vaid 4-5 korda madalam kui JIT-mootorite (liftoff<\/a><\/noindex>, cranelift<\/a><\/noindex>) ja 11,5 korda madalam v\u00f5rreldes natiivse koodi t\u00e4itmisega. Muude WebAssembly t\u00f5lgenditega v\u00f5rreldes (wac<\/a><\/noindex>, life<\/a><\/noindex>, wasm-micro-runtime<\/a><\/noindex>), osutus wasm3 15,8 korda kiirem.<\/p>\n

Wasm3 t\u00f6\u00f6tamiseks on vajalik 64Kb m\u00e4lu koodi ja 10Kb RAM-i jaoks, mis v\u00f5imaldab projekti kasutada WebAssembly rakenduste k\u00e4itamiseks mikroprotsessoritel<\/a><\/noindex>, nagu Arduino MKR*, Arduino Due, Particle Photon, ESP8266, ESP32, Air602 (W600), nRF52, nRF51 Blue Pill (STM32F103C8T6), MXChip AZ3166 (EMW3166),
\nMaix (K210), HiFive1 (E310), Fomu (ICE40UP5K) ja ATmega1284, samuti x86, x64, ARM, MIPS, RISC-V ja Xtensa arhitektuurides p\u00f5hinevatel plaatidel ja arvutitel. Toetatud operatsioonis\u00fcsteemideks on Linux (sealhulgas OpenWRT p\u00f5hised ruuterid), Windows, macOS, Android ja iOS. Samuti on v\u00f5imalik \u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c wasm3 WebAssembly vahetoode t\u00e4itmiseks t\u00f5lgendis brauseris v\u00f5i sisemise k\u00e4itamise (self-hosting) jaoks.<\/p>\n

K\u00f5rge j\u00f5udlus saavutatakse t\u00f5lgendis kasutatava tehnika t\u00f5ttu Massey Meta Machine<\/a><\/noindex> (M3), kus \u00fclekande kulu v\u00e4hendamiseks t\u00f5lgetakse bytecode eelnevalt t\u00f5husamateks toiminguteks, mis genereerivad pseudo-masinkoodi, ja virnastatud virtuaalmasina t\u00e4itmismodeli muudetakse t\u00f5husamaks registriv\u00f5tteks. M3 toimingud on C-funktsioonid, mille argumentideks on virtuaalmasina registrid, mis v\u00f5ivad olla peegeldatud CPU registritele. Tihti esinevad toimingute j\u00e4rjestused optimeeritakse kokkuv\u00f5tlikeks toiminguteks.<\/p>\n

Lisaks v\u00f5ib m\u00e4rkida uurimistulemused<\/a><\/noindex> leviku
\nWebAssembly veebis. Uuringud, mis anal\u00fc\u00fcsisid 948 000 k\u00f5ige populaarsemat veebisaiti Alexat s\u00f5nul, n\u00e4itasid, et WebAssembly-d kasutatakse 1639 veebisaidil (0,17%), st \u00fchel iga 600 veebisaidist. K\u00f5ikide saitide peal tuvastati 1950 WebAssembly moodulit, millest 150 on unikaalsed. WebAssembly kasutamise valdkonna uurimisel tehti murettekitavad j\u00e4reldused \u2014 enam kui 50% juhtudest kasutati WebAssembly-d kuritegelikel eesm\u00e4rkidel, n\u00e4iteks kr\u00fcptovaluuta kaevandamiseks (55,7%) ja pahavarakoodide varjamiseks (0,2%). Legitiimsetest rakendustest mainiti WebAssembly-d raamatukogude k\u00e4itamiseks (38,8%), m\u00e4ngude loomine (3,5%) ja isikliku koodi, mis ei ole kirjutatud JavaScriptis, k\u00e4itamiseks (0,9%). 14,9% juhtudest kasutati WebAssembly-d keskkonna anal\u00fc\u00fcsimiseks kasutaja tuvastamiseks (fingerprinting).
\n

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

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

Allikas: 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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