[Python-Dev] Re: Setting frame evaluation function (i.e.:PyInterpreterState.frame_eval)

On Wed, Oct 16, 2019 at 1:05 PM Victor Stinner wrote:

Would you mind to open an issue at bugs.python.org? You can put me ("vstinner") in the nosy list.

Done: https://bugs.python.org/issue38500

Victor

Le mer. 16 oct. 2019 à 17:07, Fabio Zadrozny a écrit :

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On Wed, Oct 16, 2019 at 11:14 AM Victor Stinner

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Hi Fabio,

Right, the PyInterpreterState structure is now opaque. You need to include pycore_pystate.h which requires to define the Py_BUILD_CORE_MODULE macro. That's the internal C API which "should not be used", but it's ok to use it for very specific use cases, like debuggers.

Maybe we should provide an interpreter method to set interp->eval_frame, to avoid to pull the annoying internal C API.

Hi Victor,

Thank you very much, that did the trick!

I agree it'd be nicer to have some method to set up the frame evaluation function instead of pulling up the internal C API, but it's also *very* specialized, so, I'm not sure how much it's worth it (I'm happy with just being able to do it, even if it's not very straightforward).

Best Regards,

Fabio

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Le mer. 16 oct. 2019 à 15:47, Fabio Zadrozny a écrit :

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Hi All,

I'm trying to upgrade the pydevd debugger to the latest version of

CPython (3.8), however I'm having some issues being able to access `PyInterpreterState.eval_frame` when compiling, so, I'd like to ask if someone can point me in the right direction.

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What I'm trying to do is compile something like:

#include "pystate.h" ... PyThreadState *ts = PyThreadState_Get(); PyInterpreterState *interp = ts->interp; interp->eval_frame = my_frame_eval_func;

and the error I'm having is:

_pydevd_frame_eval/pydevd_frame_evaluator.c(7534): error C2037: left

of 'eval_frame' specifies undefined struct/union '_is'

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So, it seems that now "pystate.h" only has a forward reference to

"_is" and a typedef from " PyInterpreterState" to "_is" and "_is" is defined in "include/internal/pycore_pystate.h", which doesn't seem like I should be including (in fact, if I try to include it I get an error saying

wrote: that I would need to define Py_BUILD_CORE)... so, can someone point me to the proper way to set the frame evaluation function on CPython 3.8?

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Thanks,

Fabio _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-leave@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at

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-- Night gathers, and now my watch begins. It shall not end until my death.