[PD-dev] deadly leak

[Mathieu Bouchard]

Le 2011-12-14 à 12:49:00, Ivica Ico Bukvic a écrit :

> So what part of the code specifically binds keyboard and mouse actions 
> to a canvas?

Look for the name as it appears in Tcl commands going to Pd. From what it 
looks like in commands to/from Tcl, you can see that it is a ".x%lx" 
format-string. You can find that this exact format string is used in 
editor_new (whereas all other cases use longer format strings intended 
directly for sys_vgui).

This string is used as an argument to guiconnect_new, which calls pd_bind. 
Also, editor_free calls guiconnect_notarget which schedules 
guiconnect_free which calls pd_unbind.

> I thought this was never explicitly bound but is rather a result of 
> tcl/tk simply reporting events within a specific canvas whose name was 
> given to it by its memory allocation.

Implicit binding is a DesireData-only feature, in which binbuf_eval 
handles a « no such object » error by reparsing the receive-symbol as a 
t_pd*, after checking that it exists (object_table->exists(target)) and 
that it's a non-zombie (object_table->get(target)). This allows for 
deleting the whole guiconnect business, including deleting the bug that 
we're talking about.

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| Mathieu BOUCHARD ----- téléphone : +1.514.383.3801 ----- Montréal, QC