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-rw-r--r--Doc/c-api/init.rst20
1 files changed, 19 insertions, 1 deletions
diff --git a/Doc/c-api/init.rst b/Doc/c-api/init.rst
index 95ff4ee..32007d5 100644
--- a/Doc/c-api/init.rst
+++ b/Doc/c-api/init.rst
@@ -329,7 +329,11 @@ Process-wide parameters
.. c:function:: void PySys_SetArgv(int argc, wchar_t **argv)
- This function works like :c:func:`PySys_SetArgvEx` with *updatepath* set to 1.
+ This function works like :c:func:`PySys_SetArgvEx` with *updatepath* set
+ to 1 unless the :program:`python` interpreter was started with the
+ :option:`-I`.
+
+ .. versionchanged:: 3.4 The *updatepath* value depends on :option:`-I`.
.. c:function:: void Py_SetPythonHome(wchar_t *home)
@@ -654,6 +658,20 @@ 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.
+
+ .. versionadded:: 3.4
+
+
The following macros are normally used without a trailing semicolon; look for
example usage in the Python source distribution.