{"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\/hu\/blog\/news\/analiz-vliyaniya-klyuchevogo-slova-final-na-proizvoditelnost-programm-c","title":{"rendered":"A final kulcssz\u00f3 hat\u00e1s\u00e1nak elemz\u00e9se a C++ programok teljes\u00edtm\u00e9ny\u00e9re","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Benjamin Summerton, a szerz\u0151je a PSRayTracing sug\u00e1rk\u00f6vet\u0151 rendszernek, elemezte a C++ nyelv k\u00f3dj\u00e1ban a 'final' kulcssz\u00f3 haszn\u00e1lat\u00e1nak hat\u00e1s\u00e1t az alkalmaz\u00e1sok teljes\u00edtm\u00e9ny\u00e9re, amely a C++11 szabv\u00e1nyban jelent meg. A tesztel\u00e9s indokak\u00e9nt szolg\u00e1ltak a h\u00e1l\u00f3n kering\u0151 \u00e1ll\u00edt\u00e1sok, miszerint a 'final' haszn\u00e1lata jav\u00edtja a teljes\u00edtm\u00e9nyt, melyek \u00e1ltal\u00e1ban csak becsl\u00e9seken alapultak, konkr\u00e9tan meg nem hat\u00e1rozott v\u00e1ltoz\u00e1sok eredm\u00e9nyei n\u00e9lk\u00fcl. <\/p>\n

Benjamin \u00e1ltal v\u00e9gzett tesztel\u00e9s azt mutatta, hogy a 'final' haszn\u00e1lat\u00e1nak teljes\u00edtm\u00e9nye er\u0151sen f\u00fcgg a ford\u00edt\u00f3t\u00f3l. GCC ford\u00edt\u00e1sakor val\u00f3ban sz\u00e1mos esetben n\u0151tt a teljes\u00edtm\u00e9ny, de Clang \u00e9s MSVC ford\u00edt\u00e1sa sor\u00e1n a teljes\u00edtm\u00e9ny a legt\u00f6bb esetben cs\u00f6kkent, \u00e9s ez jelent\u0151sebb m\u00e9rt\u00e9kben volt \u00e9szlelhet\u0151. Emellett jelent\u0151s hat\u00e1ssal volt a platform is, p\u00e9ld\u00e1ul a teljes\u00edtm\u00e9nycs\u00f6kken\u00e9s jobban megnyilv\u00e1nult az AMD Ryzen 9 6900HX CPU-val rendelkez\u0151 rendszeren, mint az Apple M1 CPU-val rendelkez\u0151 rendszeren.

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

P\u00e9ld\u00e1ul az AMD Ryzen 9 6900HX rendszer\u00e9n Ubuntu 23.10 alatt Clang ford\u00edt\u00e1sakor a 'final' haszn\u00e1lat\u00e1val a tesztek 90%-\u00e1ban legal\u00e1bb 5%-os lassul\u00e1st figyeltek meg, de 2.5%-os esetben legal\u00e1bb 5%-os gyorsul\u00e1st is regisztr\u00e1ltak. GCC eset\u00e9n 5%-os lassul\u00e1s 0.9%-os esetben t\u00f6rt\u00e9nt, m\u00edg 5%-os gyorsul\u00e1s 15.8%-ban. MSVC-n\u00e9l 5%-os lassul\u00e1s 26.2%-os tesztben, m\u00edg 5%-os gyorsul\u00e1s 13.3%-ban volt tapasztalhat\u00f3. A kutat\u00e1s szerz\u0151je arra a k\u00f6vetkeztet\u00e9sre jutott, hogy \u00e9rdemes ker\u00fclni a 'final' haszn\u00e1lat\u00e1t.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0411\u0435\u043d\u0434\u0436\u0430\u043c\u0438\u043d \u0421\u0430\u043c\u043c\u0435\u0440\u0442\u043e\u043d (Benjamin Summerton), \u0430\u0432\u0442\u043e\u0440 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0442\u0440\u0430\u0441\u0441\u0438\u0440\u043e\u0432\u043a\u0438 \u043b\u0443\u0447\u0435\u0439 PSRayTracing, \u043f\u0440\u043e\u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043b \u0432\u043b\u0438\u044f\u043d\u0438\u0435 \u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0432 \u043a\u043e\u0434\u0435 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421++ \u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0433\u043e \u0441\u043b\u043e\u0432\u0430 «final», \u043f\u043e\u044f\u0432\u0438\u0432\u0448\u0435\u0433\u043e\u0441\u044f \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0435 C++11. \u041f\u0440\u0438\u0447\u0438\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u043e\u0441\u043b\u0443\u0436\u0438\u043b\u0438 \u0432\u0438\u0442\u0430\u044e\u0449\u0438\u0435 \u0432 \u0441\u0435\u0442\u0438 \u0437\u0430\u044f\u0432\u043b\u0435\u043d\u0438\u044f, \u0447\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 «final» \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u043b\u0438\u0441\u044c \u043e\u0446\u0435\u043d\u043e\u0447\u043d\u044b\u043c\u0438 \u0441\u0443\u0436\u0434\u0435\u043d\u0438\u044f\u043c\u0438 \u0431\u0435\u0437 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u0432 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439. \u041f\u0440\u043e\u0432\u0435\u0434\u0451\u043d\u043d\u043e\u0435 \u0411\u0435\u043d\u0434\u0436\u0430\u043c\u0438\u043d\u043e\u043c \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u043a\u0430\u0437\u0430\u043b\u043e, \u0447\u0442\u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c […]<\/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\udd47Analysis of the impact of the final keyword on C++ program performance | ProHoster","description":"Benjamin Summerton, a PSRayTracing ray tracing system author, analyzed the impact on application performance of using the C++ keyword \"final\" that has 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