Re: [boost] [IOStreams] windowing in mapped_file

From: Benjamin Collins (ben.collins_at_[hidden])
Date: 2007-09-04 20:36:59

On 9/4/07, Jeff Flinn <TriumphSprint2000_at_[hidden]> wrote:
> Have you looked to see if the memory_mapping facilities in the
> interprocess library could meet your needs?

I have now, and it doesn't seem to me that interprocess really gets me
anything that iostreams::mapped_file doesn't already provide.
interprocess mapped files allow you to map a portion of a file rather
than the whole thing, but not to slide the window transparently.
Additionally, by using interprocess, I'd lose the ability to set up
chains and filters provided by iostreams.  For example, one thing I'd
like to do is read very large zlib-compressed files.  iostreams
filtering_stream is a really nice way to do that.

-- 
Benjamin A. Collins <ben.collins_at_[hidden]>
http://bloggoergosum.us