Puas yog lub cim xeeb mapped cov ntaub ntawv sai dua?
Puas yog lub cim xeeb mapped cov ntaub ntawv sai dua?

Video: Puas yog lub cim xeeb mapped cov ntaub ntawv sai dua?

Video: Puas yog lub cim xeeb mapped cov ntaub ntawv sai dua?
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Nkag mus nco mapped files yog sai dua dua li siv ncaj qha nyeem thiab sau ua haujlwm rau ob qho laj thawj. Ua ntej, kev hu xov tooj yog qhov kev txiav txim siab qeeb dua li qhov hloov pauv yooj yim rau qhov kev zov me nyuam hauv zos nco.

Yog li ntawd, nco mapped cov ntaub ntawv yog dab tsi thiab yuav siv li cas?

A nco - daim ntawv qhia muaj cov ntsiab lus ntawm a ntaub ntawv hauv virtual nco . Qhov no daim ntawv qhia nruab nrab a ntaub ntawv thiab nco qhov chaw enables ib daim ntawv thov, nrog rau ntau yam txheej txheem, hloov cov ntaub ntawv los ntawm kev nyeem ntawv thiab sau ncaj qha rau lub nco.

Ib yam li ntawd, MMAP puas nrawm dua nyeem? Tseem, mmap zoo li ua tau zoo heev rau kev ua ntu zus nyeem ntawm 4 KB ib zaug rau 1 GB cov ntaub ntawv. Kuv nyeem online uas muaj "ntau ntxiv ntawm kev luam tawm" nrog kev siv nyeem (): uas yog disk -> kernel chaw -> neeg siv tsis, piv rau disk -> mapped cheeb tsam rau mmap ().

Tib neeg kuj nug, koj txhais li cas los ntawm daim ntawv teev lus rau hauv nco?

Mapping cov ntaub ntawv rau hauv Memory . Daim ntawv qhia yog tus txheej txheem ntawm daim ntawv qhia disk sectors ntawm a ua ntaub ntawv rau hauv lub virtual nco qhov chaw ntawm tus txheej txheem. Raws li koj nyeem cov ntaub ntawv los ntawm daim ntawv qhia pointer, cov nplooj ntawv hauv cov ntaub ntawv tsim nyog thiab xa rov qab rau koj lub app.

Cov ntaub ntawv MMAP yog dab tsi?

MindManager maps yog siv rau ntau lub hom phiaj, xws li kev npaj cov hom phiaj kev lag luam, taug qab qhov kev nce qib ntawm cov haujlwm, sau cov ntawv sib tham, thiab tso tawm cov haujlwm ua lag luam. Qhib tshaj 100 ntaub ntawv hom ntawv nrog Cov ntaub ntawv Viewer rau Android.

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