Re: base_graphics_backend

[David Bateman]

Michael Goffioul wrote:
> On Wed, Sep 10, 2008 at 9:45 AM, Michael Goffioul
> <address@hidden> wrote:
>   
> > Ryan: could you break you code in your backend's object_destroyed
> > method to see where it does come from?
> >     
>
> Sorry, I didn't notice the second backtrace in your other mail. I think
> I see the problem (or at least one): in set_defaults, the title and labels
> are reassigned without taking care of freeing them, so we're leaking
> handles.
>
> Michael.
>
>   
Yes this was part of the patch I sent to you offline

@@ -2158,7 +2171,9 @@ axes::properties::set_defaults (base_gra
axes::properties::set_defaults (base_graphics_object& obj,
                const std::string& mode)
{
+  gh_manager::free (title.handle_value ());
  title = graphics_handle ();
+
  box = "on";
  key = "off";
  keybox = "off";
@@ -2182,9 +2197,14 @@ axes::properties::set_defaults (base_gra
  ylimmode = "auto";
  zlimmode = "auto";
  climmode = "auto";
+
+  gh_manager::free (xlabel.handle_value ());
+  gh_manager::free (ylabel.handle_value ());
+  gh_manager::free (zlabel.handle_value ());
  xlabel = graphics_handle ();
  ylabel = graphics_handle ();
  zlabel = graphics_handle ();
+
  xgrid = "off";
  ygrid = "off";
  zgrid = "off";


Unfortunately what this does is that instead of having the error that 
the title [xyz]label objects point to the wrong object type, they end up 
pointing to an invalid object. I still have no idea why.

D.

--
David Bateman                                address@hidden
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