Cross-platform file mapping

Mistrel · Post by **Mistrel** » Fri Apr 04, 2008 7:23 am

File mapping is a great way to copy data from disk to disk without having to first load it into memory. This is an excellent feature of the Windows API and I believe Linux support it as well. It would be great to see a cross-platform solution in PureBasic for this.

DoubleDutch · Post by **DoubleDutch** » Fri Apr 04, 2008 5:42 pm

nco2k · Post by **nco2k** » Fri Apr 04, 2008 6:06 pm

they improved the file operations by adding a read/write cache to v4.00, so i doubt they are going to rewrite the whole set again, sometime soon. the lib is very fast now (imho) and the question is, how much faster is it going to be, when they switch to file mapping?

c ya,
nco2k

Trond · Post by **Trond** » Fri Apr 04, 2008 6:42 pm

Mistrel wrote:File mapping is a great way to copy data from disk to disk without having to first load it into memory. This is an excellent feature of the Windows API and I believe Linux support it as well. It would be great to see a cross-platform solution in PureBasic for this.

Can't you just use CopyFile() for that?

Mistrel · Post by **Mistrel** » Fri Apr 04, 2008 7:56 pm

Trond wrote:Can't you just use CopyFile() for that?

CopyFile() isn't useful if I want to copy only a portion of the file.

Trond · Post by **Trond** » Fri Apr 04, 2008 9:35 pm

Actually, if you want to copy between multiple disks the data would be bound to go through memory somewhen. The difference is just who does it. It won't bring a big speed increase.

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Cross-platform file mapping

Cross-platform file mapping

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