[PYTHON MATRIX-SIG] C API questions

[Konrad Hinsen]

> > 1) How should I construct the array object to make sure that Python
> >    will not try to allocate or free memory for the actual data?
> 
> I am using PyArray_FromDimsAndData.  If data is passed into this function,
> then the flag OWN_DATA is not set.  In array_dealloc, if OWN_DATA is not
> set, then the data pointer of the array object is not freed.

Seeme easy enough...

> I decrement the reference to the array object after the python function
> call.  I do not increment it before the function call.  The array

Yes, of course. It starts out at one, as for any newly created object.

> I have not done this, but I should.  Checking the reference count and 
> raising an exception should work in most cases. 

It surely beats a crash due to an access to unallocated memory!

Thanks for your comments, it seems clear now what I have to do.

Konrad.
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Konrad Hinsen                          | E-Mail: hinsen@ibs.ibs.fr
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