{"id":112509,"date":"2023-12-26T15:10:22","date_gmt":"2023-12-26T13:10:22","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-python-predlozhen-jit-kompilyator-ispolzuyushhij-tehniku-copy-and-patch"},"modified":"2023-12-26T15:10:22","modified_gmt":"2023-12-26T13:10:22","slug":"dlya-python-predlozhen-jit-kompilyator-ispolzuyushhij-tehniku-copy-and-patch","status":"publish","type":"post","link":"https:\/\/prohoster.info\/lv\/blog\/news\/dlya-python-predlozhen-jit-kompilyator-ispolzuyushhij-tehniku-copy-and-patch","title":{"rendered":"Python pied\u0101v\u0101 JIT kompilatoru, kas izmanto copy-and-patch tehniku","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Brandt Bucher no uz\u0146\u0113muma Microsoft, kur\u0161 ir viens no CPython kodola izstr\u0101d\u0101t\u0101jiem un darbojas komand\u0101, kas str\u0101d\u0101 pie CPython interpretatora veiktsp\u0113jas uzlabo\u0161anas, ir public\u0113jis JIT kompilatora realiz\u0101ciju Python, izmantojot Copy-and-Patch tehniku. JIT publik\u0101cija ir izlaista Ziemassv\u0113tkiem, un t\u0101s pazi\u0146ojums ir uzrakst\u012bts dzej\u0101. <\/p>\n

Ierosin\u0101tais JIT izce\u013cas ar \u013coti augstu koda \u0123ener\u0113\u0161anas \u0101trumu, vieglu uztur\u0113\u0161anu un piln\u012bgu integr\u0101ciju ar interpretatoru. Ierosin\u0101t\u0101 metode automatiz\u0113 interpretatora, kas uzrakst\u012bts C valod\u0101, p\u0101rveido\u0161anu par JIT kompilatoru, bez atsevi\u0161\u0137as koda \u0123ener\u0113\u0161anas lo\u0123ikas izveido\u0161anas un bez manu\u0101las assemblera reprezent\u0101ciju izveides. \u0160\u0101d\u0101 pieej\u0101 k\u013c\u016bdas labo\u0161ana interpretator\u0101 autom\u0101tiski nov\u0113r\u0161 to pa\u0161u probl\u0113mu ar\u012b JIT, jo tiek izmantots kop\u012bgs koda \u0123enerators. <\/p>\n

Copy-and-Patch metodes darbs balst\u0101s uz to, ka kodu atk\u0101rto\u0161ana atmi\u0146\u0101, to iel\u0101d\u0113jot ar objektu failu linkeru, un ma\u0161\u012bnu instrukciju apak\u0161st\u0101d\u012b\u0161ana viet\u0101 ar \u0431\u0430\u0439\u0442\u043a\u043e\u0434\u0430 JIT ir l\u012bdz\u012bgas uzdevumiem. Str\u0101d\u0101jot JIT, programm\u0101 izpildes laik\u0101 tiek p\u0101rskat\u012bti interpretatora rad\u012btie \u0431\u0430\u0439\u0442\u043a\u043e\u0434\u0430 instrukt\u012bvi un katrai instrukcijai tiek kop\u0113ts iepriek\u0161 kompil\u0113ts ma\u0161\u012bnu kods izpild\u0101m\u0101s atmi\u0146as jom\u0101, k\u0101 ar\u012b \u012bslaic\u012bgi tiek main\u012btas instrukcijas, lai ievietotu apstr\u0101d\u0101tos datus (JIT kop\u0113 gatavas funkciju \u0161ablonus un ievieto taj\u0101s nepiecie\u0161am\u0101s v\u0113rt\u012bbas, k\u0101 piem\u0113ram, argumentus un konstantus). Objektu failu iel\u0101d\u0113\u0161anas laik\u0101 ar\u012b notiek ma\u0161\u012bnu koda kop\u0113\u0161ana atmi\u0146\u0101 un \u0101r\u0113jo simbolu apak\u0161st\u0101d\u012b\u0161ana. <\/p>\n

Copy-and-Patch JIT, izmantojot LLVM, tiek izveidots objektu fails ELF form\u0101t\u0101, kas satur inform\u0101ciju par \u0431\u0430\u0439\u0442\u043a\u043e\u0434\u0430 instrukcij\u0101m un datus par nepiecie\u0161amo datu nomai\u0146u. JIT nomaina interpret\u0101cijas laik\u0101 rad\u012bt\u0101s \u0431\u0430\u0439\u0442\u043a\u043e\u0434\u0430 instrukcijas uz ma\u0161\u012bnas kodu, vienlaikus ievietojot nepiecie\u0161amos skait\u013co\u0161anas datus. JIT realiz\u0101cijai ir nepiecie\u0161ams LLVM k\u0101 atkar\u012bba veido\u0161anas posm\u0101, bet izpildes komponentes nav saist\u012btas ar \u0101r\u0113j\u0101m atkar\u012bb\u0101m un sast\u0101v no aptuveni 300 manu\u0101li rakst\u012bt\u0101m rind\u0101m C valod\u0101 un 3000 \u0123ener\u0113t\u0101m rind\u0101m koda C valod\u0101. <\/p>\n

Sal\u012bdzin\u0101jum\u0101 ar tradicion\u0101liem JIT r\u012bkiem (LLVM -O0) pied\u0101v\u0101tais JIT nodro\u0161ina simts reizes \u0101tr\u0101ku koda \u0123ener\u0113\u0161anu un par 15% \u0101tr\u0101ku rezult\u0113jo\u0161o kodu. Sal\u012bdzin\u0101jum\u0101 ar WebAssembly kompil\u0101ciju (Liftoff) jaunais JIT \u0123ener\u0113 kodu piecas reizes \u0101tr\u0101k, un rezult\u0113jo\u0161ais kods darbojas par 50% \u0101tr\u0101k. Sal\u012bdzinot jauno JIT ar optimiz\u0113jo\u0161o JIT (LuaJIT), kas izmanto manu\u0101li rakst\u012btu asembleri, pied\u0101v\u0101tais variants izr\u0101d\u012bj\u0101s \u0101tr\u0101ks 13 no 44 testiem, un vid\u0113ji atpalika par 35%, saglab\u0101jot b\u016btisku atvieglojumu uztur\u0113\u0161an\u0101 un samazinot realiz\u0101cijas sare\u017e\u0123\u012bt\u012bbu.

\r\n \"Atska\u0146ot\r\n
<\/div>\r\n <\/div><\/center>
\n
Avots: opennet.lv<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0411\u0440\u0430\u043d\u0434\u0442 \u0411\u0443\u043a\u0435\u0440 (Brandt Bucher) \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Microsoft, \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u0439 \u0432 \u0447\u0438\u0441\u043b\u043e core-\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 CPython \u0438 \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u0430\u043d\u0434\u0435, \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0435\u0439\u0441\u044f \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u0435\u043c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 CPython, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e JIT-\u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u0430 \u0434\u043b\u044f Python, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0443\u044e \u0442\u0435\u0445\u043d\u0438\u043a\u0443 Copy-and-Patch. \u041f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u044f JIT \u043f\u0440\u0438\u0443\u0440\u043e\u0447\u0435\u043d\u0430 \u043a \u0420\u043e\u0436\u0434\u0435\u0441\u0442\u0432\u0443 \u0438 \u0430\u043d\u043e\u043d\u0441 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u0432 \u0441\u0442\u0438\u0445\u0430\u0445. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0439 JIT \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u0435\u043d \u043e\u0447\u0435\u043d\u044c \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c\u044e \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u043a\u043e\u0434\u0430, \u043f\u0440\u043e\u0441\u0442\u043e\u0442\u043e\u0439 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0438 \u043f\u043e\u043b\u043d\u043e\u0439 \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u0435\u0439 \u0441 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u043e\u043c. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0439 \u043c\u0435\u0442\u043e\u0434 […]<\/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-112509","post","type-post","status-publish","format-standard","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\udd47Python ir pied\u0101v\u0101ts JIT kompilators, kas izmanto copy-and-patch tehniku | ProHoster","description":"Brandt Bucher no Microsoft, kas ir viens no CPython kodola izstr\u0101d\u0101t\u0101jiem un str\u0101d\u0101 komand\u0101, kas nodarbojas ar CPython interpreteru veiktsp\u0113jas uzlabo\u0161anu, ir public\u0113jis \u012bstenojumu.","canonical_url":"https:\/\/prohoster.info\/lv\/blog\/news\/dlya-python-predlozhen-jit-kompilyator-ispolzuyushhij-tehniku-copy-and-patch","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"lv_LV","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0414\u043b\u044f Python \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d 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