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Asked: 2026-05-31T20:32:29+00:00

According to Msdn : Memory-mapped files enable programmers to work with extremely large files

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According to Msdn :

Memory-mapped files enable programmers to work with extremely large
files because memory can be managed concurrently, and they allow
complete, random access to a file without the need for seeking

question :

the whole principle of Memory Mappe File is to write/read bytes , and create views by location and offset.

What does it mean “NO need for seeking” ?

I MUST know the start and the end ( offsets) in order to read a file.

So seeking DOES EXISTS !

I Do seek in this huge array of bytes….

What am i missing ?

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1 Answer

  1. Editorial Team

    A MMF has random-access, in contrast with a normal file where there is 1 specific point where reading or writing occurs.

    Using offsets (and pointers etc) is not the same as seeking in a stream.

    I MUST know the start and the end ( offsets) in order to read a file

    You don’t ‘read a file’, you access memory and need address(es), not a stream-position.

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