{"id":115256,"date":"2024-04-23T14:30:14","date_gmt":"2024-04-23T12:30:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/analiz-vliyaniya-klyuchevogo-slova-final-na-proizvoditelnost-programm-c"},"modified":"2024-04-23T14:30:14","modified_gmt":"2024-04-23T12:30:15","slug":"analiz-vliyaniya-klyuchevogo-slova-final-na-proizvoditelnost-programm-c","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/analiz-vliyaniya-klyuchevogo-slova-final-na-proizvoditelnost-programm-c","title":{"rendered":"Analiza uticaja klju\u010dne re\u010di final na performanse C++ programa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Benjamin Summerton, avtor sistema traciranja zraka PSRayTracing, je analiziral vpliv uporabe klju\u00bfne besede «final» v kodi C++, ki je bila uvedena v standard C++11, na zmogljivost aplikacij. Razlog za testiranje so bila spletna navedba, da uporaba «final» pove\u010duje zmogljivost, ki so bila omejena na ocenske sodbe brez natan\u010dnih rezultatov sprememb. <\/p>\n

Testiranje, ki ga je izvedel Benjamin, je pokazalo, da zmogljivost pri uporabi «final» mo\u010dno odvisna od prevajalnika. Pri gradnji v GCC se je v opaznem \u0161tevilu primerov zmogljivost res pove\u010dala, medtem ko je pri gradnji v Clang in MSVC ve\u010dinoma obstajala zmanj\u0161ana zmogljivost, pri \u010demer je bilo to bolj opozorljivo. Velik vpliv, poleg prevajalnika, je imela tudi platforma; na primer, upad zmogljivosti se je bolj uporabljen pri sistemu s CPU AMD Ryzen 9 6900HX kot na sistemu s CPU Apple M1.

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

Na sistemu AMD Ryzen 9 6900HX z Ubuntu 23.10 je pri gradnji v Clang v 90% testov uporaba «final» privedla do upo\u010dasnitve delovanja za vsaj 5%, medtem ko je v 2.5% primerov pri\u0161lo do pospe\u0161itve za vsaj 5%. Za GCC je bila upo\u010dasnitev za 5% zabele\u017eena v 0.9% primerov, pospe\u0161ek za 5% pa v 15.8% primerih. V MSVC je bilo 5% upo\u010dasnitev opa\u017eeno v 26.2% testov, medtem ko je bilo 5% pospe\u0161ka 13.3%. Avtor raziskave je sklenil, da se je treba izogibati uporabi «final».
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":115257,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-115256","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Analiza vpliva klju\u010dno besedo final na zmogljivost programov C++ | ProHoster","description":"Benjamin Summerton, avtor sistema trassirovki lutsey PSRayTracing, je analiziral vpliv na zmogljivost aplikacij uporabe klju\u010dno besedo \"final\", ki se je 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