Re: my ongoing fantasy of garbage collected C programming

["Lieven van der Heide" <lievenvanderheide gmail com>]

Doesn't inkscape use garbage collection? I assume they must be using
some glib stuff as well.

You could have a look at how they do it.

On 8/6/08, Tim Janik <timj imendio com> wrote:
> On Tue, 5 Aug 2008, Britton Kerin wrote:
>
>
> >
> > I've tried several times now to get Hans-Boehm
> > (http://www.hpl.hp.com/personal/Hans_Boehm/gc/) working
> with gtk, but so
> > far no luck.  I found all the stuff about how to build glib to be GC
> > friendly and set env vars and such, and then I rebuild almost all of the
> > lib stack on top of it (except atk and the X libs themselves). I still
> > end up with strange failures and seg faults that go away if I just
> > remove -lgc from the link flags.  I don't free anything by hand so its
> > got to be something the GC is doing.
> >
> > I'm hoping that the presence of the gc-friendly build support in glib
> > means that somebody knows how to make this work. I would really love to
> > know how to do it. I won't go into the different gc builds and such that
> > I've tried unless someone is interested.
> >
>
>  AFAIK, no one has tried to make boehm GC really work with glib & gtk+
>  programs so far. The "gc friendly" mode that glib has in general just
>  zeros-out certain memory portions before calling free(), so GC-alike
>  leak detectors like e.g. valgrind can do a more accurate job.
>
>  Depending on how clever your GC implementation is, I'd actually expect
>  quite some real world problems with it trying to "collect" glib
>  memory. E.g. GLib only stores pointers into the _middle_ of fundamental
>  GType nodes (not the node start) and with GSlice provides its own
>  allocator that cannot be replaced with GC collection (the memory pages
>  allocated by gslice.c:allocator_memalign are also not pointed to
>  directly, a pointer to an admin structure at the page tail is kept
>  instead).
>
>
> > Thanks,
> > Britton
> >
>
>  ---
>  ciaoTJ
>
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