Re: [patch 0/4] varobj_list replacement [Re: [patch 4/8] Types GC [varobj_list to all_root_varobjs]]

[Vladimir Prus <vladimir@codesourcery.com>]

On Wednesday 29 July 2009 Tom Tromey wrote:

> >>>>> "Jan" == Jan Kratochvil <jan.kratochvil@redhat.com> writes:
> 
> Volodya> Can we just make varobj.c expose vector of varobjs?
> 
> Jan> In general iterators are preferred over direct variable access in
> Jan> modern programming.
> 
> Yeah, but what about in gdb? ;)
> 
> Jan> Still I would prefer:
> Jan> Iterator - so-called "safe" (keeping the next pointer) double link list:
> 
> This patch (assuming it was the 4/4 patch) seemed pretty clean to me.

...

> I understand from other mail that this patch is a prerequisite to the
> type GC work.  However, I don't understand in what way it is needed.  I
> probably missed something... could you either explain it or tell me
> where to look?

In fact, I'm lost the big picture as well. If we want to optimize uninstall_variable,
then the 4/4 patch appears to be the simplest one that does the trick. However, if
that's a part of some bigger story, I'd be interested to understand it.

Thanks,
Volodya