gh-131238: Convert pycore_pystate.h static inline to functions (#131352)

Convert static inline functions to functions:

* _Py_IsMainThread()
* _PyInterpreterState_Main()
* _Py_IsMainInterpreterFinalizing()
* _Py_GetMainConfig()

Author: vstinner

Include/internal/pycore_pystate.h

@@ -51,36 +51,18 @@ extern "C" {
 
 /* Check if the current thread is the main thread.
    Use _Py_IsMainInterpreter() to check if it's the main interpreter. */
-static inline int
-_Py_IsMainThread(void)
-{
-    unsigned long thread = PyThread_get_thread_ident();
-    return (thread == _PyRuntime.main_thread);
-}
-
+extern int _Py_IsMainThread(void);
 
-static inline PyInterpreterState *
-_PyInterpreterState_Main(void)
-{
-    return _PyRuntime.interpreters.main;
-}
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(PyInterpreterState*) _PyInterpreterState_Main(void);
 
 static inline int
 _Py_IsMainInterpreter(PyInterpreterState *interp)
 {
     return (interp == _PyInterpreterState_Main());
 }
 
-static inline int
-_Py_IsMainInterpreterFinalizing(PyInterpreterState *interp)
-{
-    /* bpo-39877: Access _PyRuntime directly rather than using
-       tstate->interp->runtime to support calls from Python daemon threads.
-       After Py_Finalize() has been called, tstate can be a dangling pointer:
-       point to PyThreadState freed memory. */
-    return (_PyRuntimeState_GetFinalizing(&_PyRuntime) != NULL &&
-            interp == &_PyRuntime._main_interpreter);
-}
+extern int _Py_IsMainInterpreterFinalizing(PyInterpreterState *interp);
 
 // Export for _interpreters module.
 PyAPI_FUNC(PyObject *) _PyInterpreterState_GetIDObject(PyInterpreterState *);
@@ -93,17 +75,7 @@ PyAPI_FUNC(void) _PyErr_SetInterpreterAlreadyRunning(void);
 
 extern int _PyThreadState_IsRunningMain(PyThreadState *);
 extern void _PyInterpreterState_ReinitRunningMain(PyThreadState *);
-
-
-static inline const PyConfig *
-_Py_GetMainConfig(void)
-{
-    PyInterpreterState *interp = _PyInterpreterState_Main();
-    if (interp == NULL) {
-        return NULL;
-    }
-    return _PyInterpreterState_GetConfig(interp);
-}
+extern const PyConfig* _Py_GetMainConfig(void);
 
 
 /* Only handle signals on the main thread of the main interpreter. */

Python/pystate.c

@@ -3137,3 +3137,41 @@ _PyThreadState_ClearMimallocHeaps(PyThreadState *tstate)
     }
 #endif
 }
+
+
+int
+_Py_IsMainThread(void)
+{
+    unsigned long thread = PyThread_get_thread_ident();
+    return (thread == _PyRuntime.main_thread);
+}
+
+
+PyInterpreterState *
+_PyInterpreterState_Main(void)
+{
+    return _PyRuntime.interpreters.main;
+}
+
+
+int
+_Py_IsMainInterpreterFinalizing(PyInterpreterState *interp)
+{
+    /* bpo-39877: Access _PyRuntime directly rather than using
+       tstate->interp->runtime to support calls from Python daemon threads.
+       After Py_Finalize() has been called, tstate can be a dangling pointer:
+       point to PyThreadState freed memory. */
+    return (_PyRuntimeState_GetFinalizing(&_PyRuntime) != NULL &&
+            interp == &_PyRuntime._main_interpreter);
+}
+
+
+const PyConfig *
+_Py_GetMainConfig(void)
+{
+    PyInterpreterState *interp = _PyInterpreterState_Main();
+    if (interp == NULL) {
+        return NULL;
+    }
+    return _PyInterpreterState_GetConfig(interp);
+}