[cl-gd-devel] thread safety in cl-gd

[Alain Picard]

Edi Weitz <edi at agharta.de> writes:


>
> But this shouldn't be the reason for segfaults, should it?  I'm
> wondering if libgd itself is thread-safe.  From
>
>   http://www.libgd.org/Main_Page
>
> it doesn't necessarily look as if it is.

The GD manual states:

   What's new in version 2.0.16?

       * Thread safety for freetype text output. Background: all gd
         functions were already thread safe, as long as only one thread
         manipulates each image -- except for gdImageStringFT and
         gdImageStringFTEx.

and I'm only interested in having 1 lisp thread at a time
manipulate an instance of CL-GD:*DEFAULT-IMAGE*, so it _seems_ to
me that it's supposed to be OK.

If I can't track down the segfaults, I might have to serialize all
entry points into my image generation routines, which won't really
be a problem in practice for my application.

Oh, and thanks for the quick fix!

                         -alain