I think you misunderstand what mmap does?  mmap / CreateFileMapping does not read a file into heap memory: http://en.wikipedia.org/wiki/Mmap

I doubt there’s an mmap(2) on Windows.  I’d rather call an existing file copy function than make and test my own.

Quote from: nelisky on August 27, 2010, 01:21:09
But if you are already using features from boost::filesystem you can use copy_file from that. I just think that, if not already required for something else, it’s a tad overkill.

Thanks.  I thought it would be in there somewhere.

We already use boost::filesystem in a dozen places.  It’s not a new added dependency.  It gives us a lot of portable stuff that we would otherwise have to have a #ifdef for each OS and test everywhere.

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