Gerhard Fiedler <lists <at> connectionbrazil.com> writes:
> The only difference is that in reality either the stack or the heap would
> have reached its limit earlier (when growing both in the same direction),
> because you'd have to assign each one a certain size which may not coincide
> with the exact runtime situation.

As far as I understand it the os caches that map from virtual to real pages need
to work much harder when there is a huge gap in the address space of the
program. I am not sure how it's really done. And it's not necessarily 4G, it can
be a 64 bit machine. The way I understand it, the stack has its own permissions
(non executable among others, to avoid certain attacks) and its own segment, so
it is/can be a whole 4G on a 32 bit machine.

Peter

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist