Memory Disk

[RichardF]

Hi,

I know, it seems a little strange to have a memory disk these days with all the space we have !

Im actually interested because its probally quicker to read a file from memory than from HD.

Heres the story :
I have an API call that takes a filename as a parameter.

Can i copy a file into a "memory disk" and then pass the path to the API call ? to achieve faster load times ?
using win2k/vc6.

 

[mingis]

I believe, that file caching, invented when smartdrv.sys has appeared, optimizes disk i/o time, that all i/o operations, when it is possible, are made in memory, and RAM disks are no more needed.

 

[palbano]

Yes mingis is correct, plus of course Memory Mapped Files!

-pete

 

[ml00]

I have a similar question. I have a series of files that have been concatenated into one large file. I have an api that requires a pathname. Is there a way to access the individual files without reading and writing a new file.

In essence, I want something like

CreateFileInMemory(strFilename, // Virtual filename
strDiskFilename, // Disk filename
dwOffset, // Offset at which
// virtual file begins
dwSize ) // size of virtual file

Then, I want to make calls like:

MyLib.Open(strFilename);
MyLib.DoStuff ...

Alternatively, I could read

fopen(strDiskFilename,"r"
fread(pBuffer,dwOffset,dwSize);

and then I'd need a function like

CreateVirtualFile(strFilename,pBuffer,dwSize);

MyLib.Open(strFilename);
MyLib.DoStuff ...

Thanks for your help