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bpo-36427: Document that PyEval_RestoreThread and PyGILState_Ensure can terminate the calling thread #12541

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Merged
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Apr 13, 2019
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bpo-36427: Document that PyEval_RestoreThread and PyGILState_Ensure can terminate the calling thread #12541

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bpo-36427: Document that PyEval_RestoreThread and PyGILState_Ensure c…
pablogsal Mar 25, 2019
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Use a note instead of a warning and s/interpreter/runtime
pablogsal Apr 13, 2019
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12 changes: 12 additions & 0 deletions Doc/c-api/init.rst
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Expand Up @@ -855,6 +855,12 @@ code, or when embedding the Python interpreter:
created, the current thread must not have acquired it, otherwise deadlock
ensues.

.. note::
Calling this function from a thread when the runtime is finalizing
will terminate the thread, even if the thread was not created by Python.
You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
check if the interpreter is in process of being finalized before calling
this function to avoid unwanted termination.

.. c:function:: PyThreadState* PyThreadState_Get()

Expand Down Expand Up @@ -902,6 +908,12 @@ with sub-interpreters:
When the function returns, the current thread will hold the GIL and be able
to call arbitrary Python code. Failure is a fatal error.

.. note::
Calling this function from a thread when the runtime is finalizing
will terminate the thread, even if the thread was not created by Python.
You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
check if the interpreter is in process of being finalized before calling
this function to avoid unwanted termination.

.. c:function:: void PyGILState_Release(PyGILState_STATE)

Expand Down