Video: Cov hloov pauv tau khaws cia li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hloov pauv feem ntau yog khaws cia hauv RAM. nws tus kheej feem ntau ua raws li cov cai ntawm saum toj no (tus pointer tshaj tawm hauv ib txoj haujlwm yog khaws cia ntawm pawg), tab sis cov ntaub ntawv nws taw qhia rau (lub cim xeeb thaiv nws tus kheej lossis cov khoom koj tsim nrog tshiab) yog khaws cia pe heap.
Ib yam li ntawd ib tug yuav nug, qhov twg cov hloov pauv tau khaws cia?
Tag nrho cov ntiaj teb no thiab static variables yog khaws cia nyob rau hauv cov ntaub ntawv ntu, thaum tas mus li yog khaws cia nyob rau hauv lub code segment. Kev hloov pauv thoob ntiaj teb tuaj yeem nyob hauv ob peb qhov chaw, nyob ntawm seb lawv teeb tsa li cas - rau piv txwv , const globals tej zaum yuav nyob rau hauv ib seem nyeem nkaus xwb ntawm cov executable.
Ib yam li ntawd, cov hloov pauv tau khaws cia hauv Java li cas? Txhua yam khoom hauv Java yog khaws cia ntawm lub pob. Cov " sib txawv " uas tuav cov ntaub ntawv rau lawv tuaj yeem nyob hauv pawg lossis lawv tuaj yeem ntim rau hauv lwm yam khoom (ces lawv tsis yog tiag tiag sib txawv , tab sis teb), uas muab tso rau hauv lub heap thiab. Tshooj Heap muaj Cov Khoom (tej zaum kuj muaj cov ntaub ntawv siv sib txawv ).
Tsis tas li lo lus nug yog, qhov hloov pauv tau khaws cia hauv lub cim xeeb li cas?
Cov nco slot rau a hloov pauv tau khaws cia ntawm tog twg los yog lub heap. Nws nyob ntawm cov ntsiab lus uas nws tau tshaj tawm: Txhua lub zos sib txawv (ie ib tug tshaj tawm nyob rau hauv ib txoj kev) yog khaws cia ntawm pawg. Txhua yam zoo li qub hloov pauv tau khaws cia nyob rau hauv lub heap, tsis hais seb nws puas tau tshaj tawm nyob rau hauv ib hom siv los yog hom nqi.
Cov hloov pauv hauv zos khaws cia hauv pawg li cas?
Khaws cov kev hloov hauv zos ntawm a pawg yog ib qho kev nthuav dav ntawm kev siv - qhov yooj yim ntawm kev ua kom zoo. Koj tuaj yeem xav txog qhov no. Thaum nkag mus rau ib qho haujlwm, qhov chaw rau txhua tus hauv zos variables tau faib rau qhov chaw. Qhov no yog qhov sib piv rau sib txawv faib nyob rau hauv lub heap, nws qhov chaw nyob yog lawv tus kheej khaws cia hauv lwm yam sib txawv.
Pom zoo:
Dab tsi yog cov ntaub ntawv hloov pauv hauv cov ntaub ntawv khaws cia?
Cov ntaub ntawv hloov pauv yog cov ntaub ntawv uas tau tsim nyob rau hauv daim ntawv thov kev sib ntsib, uas tsis tau khaws cia hauv cov ntaub ntawv tom qab daim ntawv thov raug txiav
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Vim li cas cov kev hloov pauv hloov pauv tsis yog serialized?
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