{"id":105136,"date":"2022-09-19T21:36:45","date_gmt":"2022-09-19T19:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/facebook-otkryl-kod-frejmvorka-dlya-vyyavleniya-utechek-pamyati-v-javascript"},"modified":"2022-09-19T21:36:45","modified_gmt":"2022-09-19T19:36:45","slug":"facebook-otkryl-kod-frejmvorka-dlya-vyyavleniya-utechek-pamyati-v-javascript","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/facebook-otkryl-kod-frejmvorka-dlya-vyyavleniya-utechek-pamyati-v-javascript","title":{"rendered":"Facebook je otvorio kod okvira za otkrivanje curenja memorije u JavaScriptu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Tvrtka Facebook (zabranjena u RF) otvorila je izvorne tekstove alata memlab, namijenjenog analizi snimaka stanja dinami\u010dki dodijeljene memorije (hrpe), odre\u0111ivanju strategije optimizacije rada s memorijom i otkrivanju curenja memorije koja nastaje prilikom izvo\u0111enja koda na jeziku JavaScript. Kod je otvoren pod MIT licencom.    <\/p>\n<p>Okvir je stvoren za ispitivanje uzroka velike potro\u0161nje memorije prilikom rada s web stranicama i web aplikacijama. Na primjer, pomo\u0107u memlab-a proveden je pregled potro\u0161nje memorije prilikom kori\u0161tenja nove verzije stranice Facebook.com, \u0161to je omogu\u0107ilo otkrivanje curenja koja su dovela do neispravnog zavr\u0161avanja preglednika na strani klijenta zbog ispunjenja slobodne memorije.     <\/p>\n<p>Uzroci curenja memorije prilikom izvo\u0111enja JavaScript koda mogu biti prisutne skrivene reference na objekte, zbog kojih sakuplja\u010d sme\u0107a ne mo\u017ee osloboditi memoriju koju objekat zauzima, nerazmjerno ke\u0161iranje vrednosti ili implementacija beskona\u010dnog pomjeranja bez uklanjanja starih elemenata sa liste. Na primjer, u donjem kodu u Chromeu, curenje memorije se doga\u0111a zbog objekta &#171;obj&#187;, bez obzira \u0161to mu se dodeljuje vrednost null, jer Chrome \u010duva unutra\u0161nje reference na ispisane objekte kako bi omogu\u0107io njihovu kasniju inspekciju u web konzoli.        var obj = {};    console.log(obj);    obj = null;        <\/p>\n<p>Glavne mogu\u0107nosti memlab-a:  <\/p>\n<ul>\n<li class=\"l\"> Otkrivanje curenja memorije u pregledniku. Memlab omogu\u0107ava automatsko uspore\u0111ivanje snimaka stanja dinami\u010dke memorije, otkrivanje curenja memorije i agregiranje rezultata.\n<li class=\"l\"> Objektno orijentirani API za prolazak kroz hrpu, koji omogu\u0107ava implementaciju vlastitih algoritama za otkrivanje curenja i realizaciju sustava analize snimaka stanja hrpe. Podr\u017eana je analiza hrpe za preglednike temeljene na Chromium engine-u, kao i za platforme Node.js, Electron i Hermes.\n<li class=\"l\"> Su\u010delje naredbene linije i API za pronala\u017eenje mogu\u0107nosti optimizacije kori\u0161tenja memorije.\n<li class=\"l\"> Sustav afirmacija za Node.js koji omogu\u0107ava izradu jedin\u010dnih testova i izvo\u0111enje programa baziranih na Node.js za stvaranje snimaka vlastitog stanja, provjeru vlastite memorije ili pisanje slo\u017eenih provjera afirmacija.  <\/ul>\n<p>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57802\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Facebook (\u0437\u0430\u043f\u0440\u0435\u0449\u0435\u043d\u0430 \u0432 \u0420\u0424) \u043e\u0442\u043a\u0440\u044b\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f memlab, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0441\u0440\u0435\u0437\u043e\u0432 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0438 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0435\u043c\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 (\u043a\u0443\u0447\u0438), \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0441\u0442\u0440\u0430\u0442\u0435\u0433\u0438\u0438 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u043f\u0430\u043c\u044f\u0442\u044c\u044e \u0438 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f \u0443\u0442\u0435\u0447\u0435\u043a \u043f\u0430\u043c\u044f\u0442\u0438, \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u044e\u0449\u0438\u0445 \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u043a\u043e\u0434\u0430 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. \u041a\u043e\u0434 \u043e\u0442\u043a\u0440\u044b\u0442 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MIT. \u0424\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a \u0431\u044b\u043b \u0441\u043e\u0437\u0434\u0430\u043d \u0434\u043b\u044f \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u043f\u0440\u0438\u0447\u0438\u043d \u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 web-\u0441\u0430\u0439\u0442\u0430\u043c\u0438 \u0438 [&hellip;]<\/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-105136","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Facebook (\u0437\u0430\u043f\u0440\u0435\u0449\u0435\u043d\u0430 \u0432 \u0420\u0424) \u043e\u0442\u043a\u0440\u044b\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f memlab, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f 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memorije u JavaScriptu | ProHoster","description":"Kompanija Facebook (zabranjena u RF) otvorila je izvorne kodove alata memlab, namijenjenog analizi stanja dinami\u010dki raspodijeljene memorije (hrpe) i odre\u0111ivanju strategije optimizacije rada s njom.","canonical_url":"https:\/\/prohoster.info\/hr\/blog\/news\/facebook-otkryl-kod-frejmvorka-dlya-vyyavleniya-utechek-pamyati-v-javascript","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hr_HR","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\udd47Facebook \u043e\u0442\u043a\u0440\u044b\u043b \u043a\u043e\u0434 \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 \u0434\u043b\u044f \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f \u0443\u0442\u0435\u0447\u0435\u043a \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 JavaScript | ProHoster","og:description":"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Facebook (\u0437\u0430\u043f\u0440\u0435\u0449\u0435\u043d\u0430 \u0432 \u0420\u0424) \u043e\u0442\u043a\u0440\u044b\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f memlab, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0441\u0440\u0435\u0437\u043e\u0432 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0438 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