Diagnosing memory growth

I have a C++ application wrapped with Swig to Python.

Some of my users are seeing large and steady memory growth for extended
scripts that make repeated calls to the C++ side of things.

The non-Swig version of my program also has an embedded scripting
language.  If I recreate their Python calls with my scripting language, I
do not see the memory growth.  Therefore, I do not initially think the
memory leaks are inherent to my C++ code.

How can I go about tracking memory use (between a wrapped C++ API, Swig
middle-layer, and Python) from Python?  What sorts of diagnostic tools are
there for this?

I know that I can not run my C++ with Address Sanitizer or Valgrind under
Python without re-compiling Python with these things enabled (I would
really like to avoid compiling Python).

Thanks for any suggestions,

Rob

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