{"id":100537,"date":"2021-06-18T16:22:49","date_gmt":"2021-06-18T14:22:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-wasmer-2-0-instrumentarij-dlya-sozdaniya-prilozhenij-na-baze-webassembly"},"modified":"2021-06-18T16:22:49","modified_gmt":"2021-06-18T14:22:51","slug":"dostupen-wasmer-2-0-instrumentarij-dlya-sozdaniya-prilozhenij-na-baze-webassembly","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/dostupen-wasmer-2-0-instrumentarij-dlya-sozdaniya-prilozhenij-na-baze-webassembly","title":{"rendered":"El\u00e9rhet\u0151 a Wasmer 2.0, a WebAssembly alap\u00fa alkalmaz\u00e1sok fejleszt\u00e9s\u00e9hez k\u00e9sz\u00fclt eszk\u00f6zk\u00e9szlet.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
A Wasmer projekt m\u00e1sodik jelent\u0151s verzi\u00f3ja megjelent, amely WebAssembly modulok futtat\u00e1s\u00e1ra szolg\u00e1l\u00f3 runtime-ot fejleszt, amely univerz\u00e1lis alkalmaz\u00e1sok l\u00e9trehoz\u00e1s\u00e1ra haszn\u00e1lhat\u00f3, amelyek k\u00fcl\u00f6nb\u00f6z\u0151 oper\u00e1ci\u00f3s rendszereken is futtathat\u00f3k, valamint megb\u00edzhatatlan k\u00f3d izol\u00e1lt v\u00e9grehajt\u00e1s\u00e1ra. A projekt k\u00f3dja Rust nyelven \u00edr\u00f3dott, \u00e9s MIT licenc alatt terjesztik. <\/p>\n
A hordozhat\u00f3s\u00e1got az alkalmaz\u00e1s k\u00f3dj\u00e1nak alacsony szint\u0171 WebAssembly k\u00f6ztes k\u00f3dra val\u00f3 leford\u00edt\u00e1sa biztos\u00edtja, amely b\u00e1rmely oper\u00e1ci\u00f3s rendszeren futtathat\u00f3 vagy m\u00e1s programoz\u00e1si nyelvekbe be\u00e9p\u00edthet\u0151. A programok k\u00f6nny\u0171 kont\u00e9nerek, amelyekben a WebAssembly \u00e1lk\u00f3dja fut. Ezek a kont\u00e9nerek nem k\u00f6t\u0151dnek az oper\u00e1ci\u00f3s rendszerhez, \u00e9s tartalmazhatnak k\u00f3dot, amelyet b\u00e1rmely programoz\u00e1si nyelven \u00edrtak. A WebAssembly-be val\u00f3 ford\u00edt\u00e1shoz az Emscripten eszk\u00f6zk\u00e9szlet haszn\u00e1lhat\u00f3. A WebAssembly g\u00e9pi k\u00f3dra val\u00f3 leford\u00edt\u00e1s\u00e1hoz a jelenlegi platformhoz k\u00fcl\u00f6nb\u00f6z\u0151 ford\u00edt\u00f3 h\u00e1tt\u00e9r t\u00e1mogatott (Singlepass, Cranelift, LLVM) \u00e9s motorok (JIT haszn\u00e1lata vagy g\u00e9pi k\u00f3d gener\u00e1l\u00e1s). <\/p>\n
A hozz\u00e1f\u00e9r\u00e9s \u00e9s a rendszerrel val\u00f3 interakci\u00f3 az API WASI (WebAssembly System Interface) seg\u00edts\u00e9g\u00e9vel val\u00f3sul meg, amely program interf\u00e9szeket biztos\u00edt f\u00e1jlokkal, socketekkel \u00e9s egy\u00e9b, az oper\u00e1ci\u00f3s rendszer \u00e1ltal biztos\u00edtott funkci\u00f3kkal val\u00f3 munk\u00e1hoz. Az alkalmaz\u00e1sok a f\u0151 rendszert\u0151l izol\u00e1ltan, sandbox k\u00f6rnyezetben m\u0171k\u00f6dnek, \u00e9s csak a deklar\u00e1lt funkcionalit\u00e1sokhoz f\u00e9rnek hozz\u00e1 (biztons\u00e1gi mechanizmus, amely a k\u00e9pess\u00e9g kezel\u00e9s\u00e9n alapul \u2014 a forr\u00e1sokkal (f\u00e1jlok, k\u00f6nyvt\u00e1rak, socketek, rendszerh\u00edv\u00e1sok stb.) val\u00f3 m\u0171veletekhez az alkalmaz\u00e1snak meg kell kapnia a megfelel\u0151 jogosults\u00e1gokat). <\/p>\n
A WebAssembly kont\u00e9ner futtat\u00e1s\u00e1hoz elegend\u0151 a Wasmer runtime telep\u00edt\u00e9se a rendszerbe, amely k\u00fcls\u0151 f\u00fcgg\u0151s\u00e9gek n\u00e9lk\u00fcl \u00e9rkezik («curl https:\/\/get.wasmer.io -sSfL | sh»), majd a sz\u00fcks\u00e9ges f\u00e1jl futtat\u00e1sa («wasmer test.wasm»). A programok hagyom\u00e1nyos WebAssembly modulok form\u00e1j\u00e1ban terjednek, amelyek kezel\u00e9s\u00e9re a WAPM csomagkezel\u0151t lehet haszn\u00e1lni. A Wasmer k\u00f6nyvt\u00e1r form\u00e1j\u00e1ban is el\u00e9rhet\u0151, amely lehet\u0151v\u00e9 teszi WebAssembly k\u00f3d be\u00e1gyaz\u00e1s\u00e1t Rust, C\/C++, C#, D, Python, JavaScript, Go, PHP, Ruby, Elixir \u00e9s Java nyelv\u0171 programokba. <\/p>\n
A platform lehet\u0151v\u00e9 teszi, hogy az alkalmaz\u00e1sok teljes\u00edtm\u00e9nye k\u00f6zel \u00e1lljon a nat\u00edv build-hez. A Native Object Engine seg\u00edts\u00e9g\u00e9vel a WebAssembly modulhoz g\u00e9pi k\u00f3dot gener\u00e1lhatunk (\"wasmer compile --native\" a prekomp\u00e1li\u00e1lt .so, .dylib \u00e9s .dll objektum f\u00e1jlok l\u00e9trehoz\u00e1s\u00e1hoz), amelyek futtat\u00e1s\u00e1hoz minim\u00e1lis runtime sz\u00fcks\u00e9ges, de megmaradnak a sandbox-izol\u00e1ci\u00f3 minden lehet\u0151s\u00e9ge. Lehets\u00e9ges prekomp\u00e1li\u00e1lt programok sz\u00e1ll\u00edt\u00e1sa be\u00e9p\u00edtett Wasmer-rel. Kieg\u00e9sz\u00edt\u00e9sek \u00e9s pluginok k\u00e9sz\u00edt\u00e9s\u00e9re Rust API \u00e9s Wasm-C-API \u00e1ll rendelkez\u00e9sre. <\/p>\n
The significant version change of Wasmer is associated with incompatible changes in the internal API, which developers assure will not affect 99% of the platform users. Notable breaking changes also include a change in the format of serialized Wasm modules (modules serialized in Wasmer 1.0 will not be usable in Wasmer 2.0). Other changes: <\/p>\n
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Support for SIMD (Single Instruction, Multiple Data) instructions, which allow operations on data to be parallelized. Areas where SIMD can significantly enhance performance include machine learning, video encoding and decoding, image processing, physical process simulation, and graphics manipulation.\n
Support for reference types, which allow Wasm modules to access information in other modules or the host environment.\n
Significant performance optimization has been carried out. The speed of the LLVM runtime with floating-point numbers has increased by about 50%. Function calls have been significantly accelerated by reducing the situations that require access to the kernel. The performance of the Cranelift code generator has increased by 40%. Data deserialization time has been reduced.
![\"El\u00e9rhet\u0151](\"\/wp-content\/uploads\/2021\/06\/fea22abc894c70080c3e9a4b003635fe.png\")
<\/center> ![\"El\u00e9rhet\u0151](\"\/wp-content\/uploads\/2021\/06\/e3cf7a3b437238e1743f05b13a3e212c.png\")
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