Re: [PATCH] Portable dumper fixes for NT
Andy Piper writes:
At 04:37 PM 1/16/00 +0100, Hrvoje Niksic wrote:
>"Kirill 'Big K' Katsnelson" <kkm(a)dtmx.com> writes:
>
>> A question: does mmap gives any performance benefits over read when
>> loading the dump file?
>
>Well, mmap() allows you to read only the parts of the file you're
>interested in. If call with MMAP_SHARED, such memory doesn't need
>additional space on swap either.
I was also going to ask Olivier - is it possible to just tack xemacs.dmp
onto the end of the xemacs executable? Then you wouldn't have to care about
installation directory or copying two files around. I think the current NT
unexec does something morally equivalent to this.
This does not sound portable. I can imagine suspicious virus and
worm checking programs not digging this little trick at all.
It's worth a try, though.