Having recently upgraded to Python 2.4, I am having a large memory
leak with the following code built with VC++ 6.0:

PyObject *pName, *pModule;

Py_Initialize();
pName = PyString_FromString(argv[1]);

pModule = PyImport_Import(pName);
Py_DECREF(pName);

PyObject* pModule2 = PyImport_ReloadModule(pModule);
Py_DECREF(pModule2);
Py_DECREF(pModule);
Py_Finalize();
return 0;

I get leaks of over 500 kb. I have another program which is much more
complex, in which every call to PyImport_ReloadModule is leaking 200+
kb, even though I am calling Py_DECREF correctly.

Help!

ben.held@staarinc.com writes:
[color=blue]
> Having recently upgraded to Python 2.4, I am having a large memory
> leak with the following code built with VC++ 6.0:
>
> PyObject *pName, *pModule;
>
> Py_Initialize();
> pName = PyString_FromString(argv[1]);
>
> pModule = PyImport_Import(pName);
> Py_DECREF(pName);
>
> PyObject* pModule2 = PyImport_ReloadModule(pModule);
> Py_DECREF(pModule2);
> Py_DECREF(pModule);
> Py_Finalize();
> return 0;[/color]

Given that the builtin function reload() does more or less the same
thing, it seems likely that there's something odd about your embedding
that is making the difference.

Does it make a difference which module you reload?

I notice that you're using VC++ 6.0. Is your Python built with VC6
too? (The python.org distribution is built with 7 -- or 7.1, I forget
which).
[color=blue]
> Help![/color]

You might want to file a bug report.

Cheers,
mwh

--
Like most people, I don't always agree with the BDFL (especially
when he wants to change things I've just written about in very
large books), ...
-- Mark Lutz, http://python.oreilly.com/news/python_0501.html