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From:	"Chris January" <chris AT atomice DOT net>
To:	<cygwin AT cygwin DOT com>
Subject:	RE: mmap() and gcc precompiled headers
Date:	Thu, 3 Jul 2003 18:59:18 +0100
Message-ID:	<ICEBIHGCEJIPLNMBNCMKKEFBCIAA.chris@atomice.net>
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> On Thu, Jul 03, 2003 at 10:19:42AM -0400, Christopher Faylor wrote:
> > On Thu, Jul 03, 2003 at 11:47:28AM +0200, Corinna Vinschen wrote:
> > >Do you mean something like this:
> > >
> > >  If addr is given, check if it's 64K aligned.  If not, align and
> > >  raise the memory requirement accordingly.  Call MapViewOfFileEx
> > >  with the aligned address.  If it works, return the addr given as
> > >  parameter, otherwise return MapViewOfFileEx(NULL).
> >
> > How about, instead, just use the address and if it fails and is not
> > MAP_FIXED, use MapViewOfFileEx without the address?
>
> Yep, that's the simple approach.  I dropped this suggestion from my
> original reply since it requires addr to be on a 64k boundary.
> Unfortunately I have no idea if the chance to succeed might be better
> or worse than using the more complex approach.

Just out of curiosity would a patch to support mmap on 4k boundaries be
useful/accepted?

Chris


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