Re: Performer's Debug message

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John Rohlf (jrohlf++at++tubes)
Fri, 30 Jun 95 15:15:04 PDT

>
>
> Could anybody please tell me what the following message means?
>
> > Performer Debug (33): Cannot access this object from this process. Object
> > type is pfDCS, id is 199 and process id is 8170
>
> I am using Performer from Harlequin's LISP using its foreign function
> interface, and this error only occurs on ONYX + RealityEngine. 8170 is the
> lisp/performer process.
>
> This problem occurs pf functions like: pfGetNumChildren(), pfDCSScale() etc..
>
> Thank you very much.
>
> Suguru Ishizaki
> MIT Media Lab.

         
        Since you are on an ONYX, you are probably multiprocessing.
If you access nodes from Performer's DRAW process you will get
this message since Performer does not maintain node data structures
that are accessible from the DRAW. What you are doing is accessing nodes
that are also visible to the APP so there is a slight chance of multiprocessed
collisions. You can either ensure that you do not access nodes in the
DRAW or ignore the warning by increasing your pfNotifyLevel.

        There may also be some whacky Lisp thing going on but I can't
comment on that.

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