Main > Imibuzo Evame Ukubuzwa > Inika amandla ukulungisa iphutha le-jit - izixazululo zezinkinga

Inika amandla ukulungisa iphutha le-jit - izixazululo zezinkinga

Kusho ukuthini ukulungisa iphutha kwe-JIT?

Ngesikhathiukulungisa iphuthaisici esethula i-Visual Studioukulungisa iphuthangokuzenzakalela lapho uhlelo, olusebenza ngaphandle kwe-Visual Studio, luhlangabezana nephutha elibulalayo. Ngesikhathiukulungisa iphuthaikuvumela ukuthi uhlole iphutha ngaphambi kokuthi uhlelo lokusebenza lunqanyulwe uhlelo lokusebenza.

Endimeni yokugcina, sihlolisise ukuthi iJavaScriptCore, injini yeWebkit's JavaScript, igcina kanjani izinto namanani kwimemori.

Kulesi sihloko ngithanda ukufunda okwengeziwe nge-JIT, umhlanganisi osesikhathini. Lolu chungechunge lokuxhashazwa kwesiphequluli lusekelwa yi-SSD Secure Disclosure. Ngemininingwane engaphezulu, bheka incazelo Ukubeka nje, isihlanganisi esisebenza ngesikhathi esifanele sihlanganisa i-JavaScript bytecode eyenziwe ngumshini weJavaScript waba yikhodi yomshini wendabuko.

Kuhlanganiswa ikhodi. Kepha i-JIT kuJavaScriptCore incane kakhulu. Ngakho-ke singafunda kanjani ngakho? Ngithole ithiphu elihle kusuka kuLinus lokuhlola ezinye izinsiza ezisemthethweni zeWebkit njengale ndatshana kubhulogi yeWebkit.

IJavaScriptCore CSI: Indaba Yokuphenywa Kwesiza Sengozi. Namuhla ngizochaza amanye ala mathuluzi asetshenziswa onjiniyela beWebKit ngokuxoxa indaba yokuthi sithole kanjani ukuthi kunesiphazamiso sangempela ku-JSC Virtual Machine (VM). Le bhulogi yabantu abanentshisekelo yokufaka isandla kwiWebkit, futhi umbhali wabelana ngemininingwane eminingi ebaluleke kakhulu yokuthi ungalungisa kanjani ukuphahlazeka ukuthola imbangela.

Futhi yilokho kanye esifuna ukukwazi njengabacwaningi bezokuphepha. Isibonelo, ichaza ukuthi ungayakha kanjani i-address sanitizer build yeWebkit ukuthola amaphutha angahle abe khona njengokugcwala kwenqwaba noma izinkinga zokusebenzisa ngemuva, okuvame ukungashayi ngokushesha ngezinhlelo ezijwayelekile. Kepha sinesithakazelo ezintweni ze-JIT njengamanje.

Futhi ngokuqhubekayo esihlokweni sithola okulandelayo. I-JSC iza nezigaba eziningana zezinjini zokubulawa. Kungenzeka ukuthi ufunde ngakho lapha, lesi yindatshana ethula i-FTL JIT.

Kunezigaba ezi-4: Isigaba 1: umhumushi we-LLInt Isigaba 2: iBaseline JIT Compiler Tier 3: i-DFG JIT neTier 4: i-FTL JITS Ngakho iTier 1 ingutolika ojwayelekile. Lo ngumshini we-JavaScript obonakalayo oyisisekelo. Singabheka ngokushesha kufayela lomthombo i-LowLevelInterpreter.cpp, equkethe iluphu lotolika.

Ngakho-ke kudlula nje nge-bytecode yeJavascript bese kukhipha isitatimende ngasinye. Ngakho-ke ... uma umsebenzi ubizwa kaningi manje, ungashisa.

Leli yigama elichaza ukuthi kuningi okwenzekayo. Ngemuva kwalokho iJavaScriptCore inganquma ukwenza i-JIT umsebenzi ngesigaba sokuqala. I-JIT eyisisekelo.

Futhi kufayela le-JIT.cpp elihambisanayo singaphinda sithole imininingwane eyengeziwe. Uma i-LLInt ithola ukuthi kukhona ukungena kwe-OSR kusisekelo i-JIT ku-loop, kudluliswa i-bytecode offset eyenziwa ngayo lapho iqala ukuhlanganiswa kwethu.

Sidinga nje ukuhlanganisa ikhodi yakho konke okufinyelelekayo kusuka kuleyo bytecode offset. I-OSR, Ekushintsheni Kwesitaki, ngokuyisisekelo uhlobo lwe-JIT olukuvumela ukuthi ushintshele kwikhodi ehlanganisiwe endizeni. Kusasebenza kakhulu ne-bytecode, ngomqondo ongokomfanekiso, ngoba akukakabi khona okunye ukwenziwa kube lula.

Kusuka ku- “Kwethulwa i-Webkit FTL JIT:” sibuye sifunde ukuthi: Ukwenziwa kokuqala komsebenzi kuhlala kuqala kungqimba yotolika. Lapho nje isitatimende somsebenzi senziwe ngaphezu kwezikhathi eziyi-100 noma umsebenzi ubizwa ngaphezu kwezikhathi eziyi-6 (noma yikuphi okuza kuqala), ukwenziwa kuqondiswa kabusha kukhodi ehlanganiswe yi-baseline JIT esusa okunye okuphezulu kwabahumushi, kepha kukhona ukuntuleka kokusebenziseka okuhle kwe-compiler. Lapho nje umyalo wenziwa ngaphezu kwezikhathi eziyi-1000 kwikhodi eyisisekelo noma umsebenzi oyisisekelo ubizwa ngaphezu kwezikhathi ezingama-66, sibuyisela ukukhishwa emuva ku-DFG JIT. I-DFG imele iData Flow Graph, ngakho-ke lokho kusitshela okuncane mayelana sisho ukuthini lesi sinyathelo.

I-athikili ifaka nesithombe esihle esichaza ipayipi le-DFG. I-DFG iqala ukuguqula i-bytecode ibe yifomethi ye-DFG-CPS. I-CPS imele isitayela sokuqhubeka nokudlula, okusho ukuthi ikhodi yakho ayisebenzisi izimbuyiselo, kepha kunalokho iyaqhubeka futhi idlulele emsebenzini olandelayo.

Uma wake wakha ukuthuthuka kweNodeJS Express, ungakucabanga njengobudlelwano bokuhamba komsebenzi olandelayo () phakathi kokuguquguqukayo nokwesikhashana. Imininingwane yokuphrinta isetshenziselwa ukufaka izinhlobo zokuqagela, futhi lezo zibikezelo zisetshenziselwa ukwethula isethi encane yokuhlolwa kohlobo. Ukulungiswa komhlanganisi wendabuko kuyalandela.

Umhlanganisi ugcina ekhiqiza ikhodi yomshini iqonde ngqo kwigrafu yokuhamba kwedatha, ngakho-ke kulapho izinto ziba mnandi khona. Umhlanganisi we-JIT uqagela izinhlobo, futhi uma i-JIT ikholelwa ukuthi izinhlobo aziguquki, i-JIT inganquma ukususa amasheke athile. Yikuphi empeleni okungasheshisa ikhodi kakhulu uma kungumsebenzi obizwa kepha akusikho lokho kuphela.

Ngemuva kwe-DFG JIT kusekhona i-JIT. I-FTL - ishesha kunokukhanya. Ngenkathi kwethulwa lesi silwane, wasebenzisa i-compiler backend LLVM eyaziwayo ukufaka ukwenziwa okuhle kakhulu kwe-compiler FTL JIT yathuthukiswa ukuletha ukwenziwa okunolaka okufana no-C kwiJavaScript.

Ngesinye isikhathi, i-LLVM yathathelwa indawo yi-B3, kepha umqondo uyefana. Futhi lo mhlanganisi we-JIT angenza imicabango ethe xaxa mayelana nekhodi. Kepha ake sibheke lokho kancane, okuyilapho futhi lapho indatshana ephenya ngokuphahlazeka ihle kakhulu.

Kwethula okuguqukayo kwemvelo okuningana okungasetshenziswa ukulawula ukusebenza kwe-JIT futhi kunike amandla ukukhishwa kokulungisa amaphutha. Isibonelo, singasebenzisa i-JSC_useJIT ukukhubaza i-JIT ngokuphelele, noma ukusebenzisa i-JSC_useFTLJITJ ukukhubaza i-FTL kuphela, isigaba sokugcina. Noma singakhubaza imicu eyenza i-JIT ngokufana.

Noma singabika siphrinte njalo lapho i-JIT isebenza kahle. Ngakho-ke ku-lldb ngisetha ukuguquguquka kwemvelo ukuvula konke bese ngiqala kabusha i-JSC, lokhu sekuvele kuphumela kokunye ukuphrinta kwe-JIT kokulungisa iphutha. Uma ubheka amagama womsebenzi afakiwe, kubukeka sengathi izinto ezinjenge-charAt, abs, njll.

Kepha manje sifuna ukwenza owethu umsebenzi we-JIT, umsebenzi we-eoverflow, othatha inombolo elula njengepharamitha, bese ulungisa ukuguquguquka komphumela kanye namaluphu kusuka ku-i = 0 kuye ku-n bese ukuhlanganisa ngomphumela. kushisa ”. Lokhu singakwenza nge-loop elula ebiza lo msebenzi.

Ake siqale ngezinguqulo ezine kuphela. Kukhombisa okunye okukhiphayo, kepha hhayi lokhu esikufunayo. Ngisho nokuyisebenzisa amahlandla ayi-10 ezinkambeni akwenzi lutho.

Kepha ukwenza umsebenzi izikhathi eziyi-100 kuzodala i-JIT eyisisekelo. Nayi ikhodi yomhlangano ehlanganisiwe elingana nomsebenzi weJavascript. Ake sizame ukuqala i-JIT enolaka kakhulu. ake sandise iluphu.

Futhi iBoom DFG Jit ...

Futhi manje ake sihlanye ngokuphelele, lungisa iluphu. I-FTL Jit. boom, kunokuningi okukhiphayo, kepha uma ngikhuluma iqiniso, angazi ukuthi kusho ukuthini konke.

Kepha into ebaluleke kakhulu ukuthi sifunde ngezindlela ezahlukahlukene zokulungisa amaphutha namasu wokumba ngokujulile. Manje wazi okuthe xaxa ngomhlanganisi we-JIT. Kusukela ku-athikili yokugcina uyazi futhi ukuthi izinto ze-JavaScript, ukuhlelwa kanye namanani amelwa kanjani kwimemori.

Manje cabanga lo mbono olandelayo. Uma umhlanganisi we-JIT eqagela futhi ecabanga izinhlobo zekhodi futhi esusa amasheke futhi, ngokwesibonelo, amane nje awasuse kokukhunjulwa okuthile kwememori, kungenzeka yini lokho kuhlukunyezwe? Vele ucabange nje, yithi, ikhodi ye-JIT ilindele uhlu lwamaphindeke kabili lweJavaScript bese iphendula kubo ngqo Amanani. Umhlanganisi we-JIT ube eselungiselela konke ukuhlola, kepha lapho-ke uzothola indlela yokushintsha okufakwayo kumalungu afanayo nento.

Manje into izobekwa kulolu hlu njengesikhombi. Ngakho-ke uma i-jied code ingenamasheke futhi ibuyisa ukungena kokuqala kwalolu hlu, ngokwesibonelo, izobuyisa leso sikhombisi njengokuphindwe kabili, akunjalo? Lokho kungaba kubi impela, futhi i-'Ngempela ingenye yezindlela ezijwayelekile zokuba sengozini kwesiphequluli futhi sizokubona kusebenza ngokushesha. Kepha i-JIT izama kanjani ukuvimbela izinto ezinjalo? Yebo, kuvela ukuthi abathuthukisi bazama ukulingisa yonke imisebenzi ethinta ukucabanga kwe-. ine-JIT compiler.

Ngakho-ke uma kukhona okuthile okungashintsha ukwakheka kwalolu hlu, ngokwesibonelo uma into ibekwe ngokulandelana okuphindwe kabili, umsebenzi onjalo kufanele umakwe njengoyingozi. Ake ngikutshele ngcaphuno emfushane kule ndatshana yeZDI mayelana. funda ufunde 'UKUSHINTSHA UKUSHESHA KWAKHO: UMHLAHLANDLELA WOKUQHATHANISA'.

Lapha babhala: Indlela yokusho ukuthi umsebenzi ungaba yingozi ukuvimbela ukwenziwa kwesikhathi esizayo ukubiza umsebenzi obizwa nge-clobberWorld, phakathi kwezinye izinto, ophula yonke imicabango mayelana nezinhlobo zawo wonke amalungu afanayo ngaphakathi kwegrafu. Ngakho-ke injini yeJavascript izama ukumaka noma yini engaba nemiphumela emibi engaba khona ngokushayela i-clobberWorld. Imiphumela emibi kungaba yizinto ebesizicabanga nje njengokushintsha uhlobo lwenani futhi okunye bekungalindele lolo shintsho.

Ngakho-ke nangu umsebenzi we-clobberWorld, owenziwa engxenyeni ye-DFG-JIT. Lokhu kubiza i-clobberStructures, esetha i-setStructureClobberState to StructuresAreClobbered ngokucophelela ngokusobala yizinto lapho, ngokwesibonelo, ukwakheka kwento kuguquka khona. Masithi i-JIT ikhulisa ukufinyelela kwempahla ye-.x entweni, bese ngokuzumayo uyakususa lokho, kufanele kumakwe ukuthi isakhiwo sesishintshile ukuze ikhodi ye-JIT ilahlwe, ngaphandle kwalokho uzothola inkohlakalo yenkumbulo lapho usebenzisa le jitter kabusha umsebenzi.

hotmail auto impendulo

Kepha sekwanele manje. Esihlokweni esilandelayo siqhubekela phambili ekusebenziseni kukaLinus, okuhlukumeza icala elinjalo.

Lapho ukulungisa amaphutha kwe-JIT kunikwe amandla noma ikuphi okuhlukile okungaphethwe kuzothunyelwa ku-JIT?

Kunika amandlaNgesikhathi (JIT)ukulungisa iphutha,. config yalolu hlelo lokusebenza noma ikhompyutha (umshini. i-config) kumele ibe ne-jitDebugginginani elibekwe ohlelweni.Lapho ukulungisa iphutha le-JIT kunikwe amandla,noma yikuphi ukukhishwa okungaphethwe ngesandla kuzothunyelwa kusikhombisi se-JITkubhaliswe kwikhompyutha kunokuphathwa yileli bhokisi lengxoxo. '

Ngikukhubaza kanjani ukulungisa iphutha le-JIT?

Ku-Windows Control Panel> Inethiwekhi ne-Inthanethi> Izinketho ze-inthanethi, khethaKhubazaiskripthiukulungisa iphutha(Internet Explorer) kanyeKhubazaiskripthiukulungisa iphutha(okunye).23 uMeyi 2018

Ngisilungisa kanjani asikho isiphazamisi se-JIT esibhalisiwe esichaziwe?

Asikho isisombululo se-JIT esibhalisiwe esichaziwe. Chofoza ku-Phinda uzame ukuze inqubo ilinde ngenkathi unamathisela i-ukulungisa iphuthangesandla. Chofoza ku-Khansela ukukhipha ifayela le-JITisicelo sokulungisa iphutha.10 Meyi 2018

Ungayinika kanjani amandla i- 'JIT debugging ' yeMicrosoft.NET?

'Okungabanjwanga ngaphandle kwenzekile kuhlelo lwakho lokusebenza ..... Uhlelo alukwazi ukuthola ifayili elicacisiwe ... Ukuze unike amandla ukulungisa iphutha kwe-Just In Time (JIT), ifayela le- .config yalolu hlelo lokusebenza noma ikhompyutha (machine.config) kumele libe ne- inani le-jitDebugging elisethwe kusigaba sesistimu.windows.forms. Uhlelo lokusebenza kumele futhi luhlanganiswe nokulungisa iphutha kunikwe amandla.

Ingabe likhona ibhokisi lesikhathi lokulungisa iphutha lesikhathi esifanele (JIT)?

ukulungisa iphutha-nje-ngesikhathi (JIT) esikhundleni saleli bhokisi lengxoxo. I-System.UnauthorizedAccessException: Ukufinyelela endleleni 'C: Program Files (x86) BotBoy prefs.xml' kwenqatshiwe. inani le-jitDebugging elisethwe kusigaba sesistimu.windows.forms. inikwe amandla. kunokuba isingathwe yileli bhokisi lengxoxo. Le ntambo ikhiyiwe.

Ungavumela kanjani noma ukhubaze nje ukulungisa iphutha ngesikhathi?

Ukunika amandla noma ukukhubaza ukulungisa iphutha le-Just-In-Time: 1 Kumenyu yamathuluzi noma yokususa iphutha, khetha Izinketho & gt; Ukulungisa iphutha & gt; Ngesikhathi. 2 Ku-Vumela i-Just-In-Time debugging yalezi zinhlobo zebhokisi lekhodi, khetha izinhlobo zekhodi ozifuna ukulungisa iphutha le-Just-In-Time ukulungisa iphutha: Kuphethwe, aboMdabu, kanye / noma iSkripthi. 3 Khetha Kulungile. Buka Okuningi...

Ngiyilungisa kanjani le nkinga ku-JIT?

Ngiyilungisa kanjani le nkinga? ukulungisa iphutha-nje-ngesikhathi (JIT) esikhundleni saleli bhokisi lengxoxo. I-System.UnauthorizedAccessException: Ukufinyelela endleleni 'C: Program Files (x86) BotBoy prefs.xml' kwenqatshiwe. inani le-jitDebugging elisethwe kusigaba sesistimu.windows.forms. inikwe amandla. kunokuba isingathwe yileli bhokisi lengxoxo. Le ntambo ikhiyiwe.

Eminye Imibuzo Kulesi Sigaba

Yini i-shell32.dll - izixazululo ezintsha

Ingabe ukukhipha i-EXE kuphephile? i-uninstall.exe yifayela elisemthethweni elisebenzisekayo elaziwa kakhulu njenge-Safe Connect Uninstaller. ... Itholakala ku-C: \ Program Files. Abahleli be-Malware bakha amafayela anezikripthi zamagciwane bese bewaqamba ngama- uninstall.exe ngenhloso yokusabalalisa igciwane ku-inthanethi.

Yini i-igfxcuiservice.exe - isixazululo esisebenzayo

Ngingayikhubaza iMicrosoft Windows Search protocol host? Ukumisa lokhu kwaziswa, vula iPhaneli Yokulawula> Imeyili (iMicrosoft Outlook 2016) (32-bit), ukhethe iphrofayili yemeyili endala efana ne-akhawunti efakwe ohlwini lwewindi lengxoxo lengxoxo ye-Search Protocol Host, bese uqhafaza u-Susa, bese uchofoza OK.

Yini ieframe.dll - izixazululo eziqinile

Ngingasusa u-C: \ ukwenza ngezifiso i-Usmt PPKG? Yebo, qhubeka uyisuse. 7 kulungile. 2018