Document Py_MakePendingCalls()

Author: ZeroIntensity

Doc/c-api/init.rst

@@ -1854,6 +1854,19 @@ pointer and a void pointer argument.
       This function now always schedules *func* to be run in the main
       interpreter.
 
+
+.. c:function:: int Py_MakePendingCalls(void)
+
+   Execute all pending calls. This is usually executed automatically by the
+   interpreter. If this is not called in the main thread of the main
+   interpreter, this function does nothing and returns ``0``.
+
+   This function returns ``0`` on success, and returns ``-1`` with an exception
+   set on failure.
+
+   The caller must hold an :term:`attached thread state`.
+
+
 .. _profiling:
 
 Profiling and Tracing