1, unbuffered file read and write. 2, file read and write cache. 3, the use of asynchronous file read and write. And comparison of the three ways.

os_test10实现文件读写的三种方式比较\Debug\os_test10.exe
...................................\.....\os_test10.ilk
...................................\.....\os_test10.obj
...................................\.....\os_test10.pch
...................................\.....\os_test10.pdb
...................................\.....\os_test10.res
...................................\.....\StdAfx.obj
...................................\.....\vc60.idb
...................................\.....\vc60.pdb
...................................\nobuffer.txt
...................................\os_test10.clw
...................................\os_test10.cpp
...................................\os_test10.dsp
...................................\os_test10.dsw
...................................\os_test10.h
...................................\os_test10.ncb
...................................\os_test10.opt
...................................\os_test10.plg
...................................\os_test10.rc
...................................\ReadMe.txt
...................................\Resource.h
...................................\StdAfx.cpp
...................................\StdAfx.h
...................................\Debug
os_test10实现文件读写的三种方式比较

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