Re: when to call MapViewOfFile()

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#175

From: Bob Gonder
Date: Tue, 01 Jul 2008 01:40

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Mike Collins wrote:

>What i wanted to know is if MapViewOfFile() creates a snap shot of the MMF,

No, it is dynamic....

According to this: File Mapping
http://msdn.microsoft.com/en-us/library/aa366556(VS.85).aspx
The file exists in only one hunk of RAM
(backed by physical disk space.)
Through Intel CPU Magic, that one hunk of
RAM can be shared at different memory
addresses in different process spaces.
That means if you write to some offset
in your view, you are writing to real,
shared RAM and it is also seen by others
because *it is the same physical RAM*
(Center box in the link.)

I hope that clears it up, does for me :-)

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Subject: Re: when to call MapViewOfFile()
Date: Mon, 30 Jun 2008 18:40:55 -0700
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