Re: [info-performer] Problems deleting nodes between frames

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From: Yair Kurzion (yair++at++polygon.engr.sgi.com)
Date: 01/09/2004 21:23:18

Hi Jaroslav !

I modified your sample to make it run. I replaced your code with:

        pfGroup* gr = new pfGroup;
        gr -> ref();
        pfUnrefDelete(gr);

Your code invokes the function pfMemory::unrefDelete. Without going into too
many boring details I'll say that pfMemory::unrefDelete is relevant when you
only use libpr objects (single-buffered objects). We keep this function for
backwards compatibility. Most customers today do not use libpr exclusively.

The correct function is pfUnrefDelete. It translates into
pfBuffer::unrefDelete. When you use pfUnrefDelete it detects libpr/libpf
objects and does the right thing.

-yair

>
> Hi All!
> I'm trying to make some changes to my scene graph between frames but it
> crashes in pfSync() probably because of the delayed deletes that take place
> there. I finished with the most simple case just inserting following lines
> of code in the loop of simple.cxx sample and it behaves the same:
>
> pfGroup* gr = new pfGroup;
> gr->ref();
> gr->unrefDelete();
>
> It should be something related to unrefDelete() also because when I use
> ref() + pfDelete() it runs ok. Also doing the same but in C version of
> simple sample is ok.
>
> So is it a bug or I'm doing something wrong?
>
> Jaroslav
>
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-- 
\_________  \_____  \__    \__  \_____        
\_________  \_____   \__   \__  \_____         Yair Kurzion
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