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Issue #17522: Add the PyGILState_Check() API.

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Kristján Valur Jónsson 2013-03-23 03:36:16 -07:00
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Doc/c-api/init.rst
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@ -654,6 +654,18 @@ with sub-interpreters:
made on the main thread. This is mainly a helper/diagnostic function.
.. c:function:: int PyGILState_Check()
Return 1 if the current thread is holding the GIL and 0 otherwise.
This function can be called from any thread at any time.
Only if it has had its Python thread state initialized and currently is
holding the GIL will it return 1.
This is mainly a helper/diagnostic function. It can be useful
for example in callback contexts or memory allocation functions when
knowing that the GIL is locked can allow the caller to perform sensitive
actions or otherwise behave differently.
The following macros are normally used without a trailing semicolon; look for
example usage in the Python source distribution.