[java-dev] Re: Crash in JitterMatrix.copyMatrixToArray() ?

On Feb 5, 2008, at 11:55 AM, Peter Castine wrote:

>
> I'll get you a copy of the app we've built around my mxj Object. I  
> need to get a current version from John Dekron. It'll probably be  
> tomorrow.
>
> Thanks for taking the time to look at what I posted so far.
>
> FWIW, I was originally using getCell2d() calls, but they ate up   
> CPU pretty seriously.

As mentioned before, you might try copyVectorToArray(). This row by  
row copy is way faster than getCell2d() approach, and shouldn't be so  
much slower than a copyMatrixToArray() approach. On first glance the  
copyMatrixToArray() JNI code looks fine to me, but given your  
crashlog, maybe there's some problems for some cases in this  
function. I'm pretty sure that the copyVectorToArray() method is  
stable. That is unless this whole thing is the result of something  
else trashing memory.

-Joshua