Multithreading - C++ - Emulate Async Behaviour in Python

[AgazzottiR]

Hi all,
I have to wrap an async behaviour using C++. What I am trying to do is:

• Write a C++ class where:
  - First method: Spawns a thread and keeps the handler in the class scope.
  - Second method: Returns a Boolean (True if the computation running in the first method is finished).
  - Third Method: Return the C++ cached results by the first method computation.
• From Python:
  - Call the second method once in a while to see if the computation is finished.
  - When Finished get the results.

All the data passing can be done through the pybind11/stl.h . I am not sharing memory among python and C++ but the python instance of the C++ class herself. My question arises since I have already run asynchronous tasks within a C++ bind function and I have never had problems( i.e if I did a cpp main and a python main the results where the same, while having C++ running threads asynchronously wrt the main I get some sync issues only when the main is Python). My question is do I have to keep debugging my code since everything should run the same? or the GIL causes me problems having the Cpp object used among multiple threads?

INHO I think having C++ and Python on the same instance with multiple threads could be an Issue.