Py_INCREF() incomprehension

Tue Apr 26 08:21:19 EDT 2011

Am 26.04.2011 11:48, schrieb Ervin Hegedüs:
> Everything works fine, but sorry for the recurrent question: where
> should I use the Py_INCREF()/Py_DECREF() in code above?

That depends on the functions which are called. It should be given in 
the API description. The same counts for the incoming parameters (which 
are borrowed AFAIR - but better have a look).
The most critical parts are indeed
* the input parameters
and
* Py_BuildValue()
. Maybe you could as well have a look at some example code.
Especially look at the concepts called "borrowed reference" vs. "owned 
reference".
And, for your other question:
 > if (cRes == 0) {
 > return Py_BuildValue("s", outdata);
 > }
You ask how to stop leaking memory? Well, simply by not leaking it :-)
Just free the memory area:
if (cRes == 0) {
 PyObject* ret = Py_BuildValue("s", outdata);
 free(outdata);
 return ret;
}
BTW: Is there any reason for using calloc()? malloc() would probably be 
faster...
Thomas