pythongh-127705: Move Py_INCREF_MORTAL() to the internal C API (pythonGH-136178)

Rename Py_INCREF_MORTAL() to _Py_INCREF_MORTAL() and move it to
pycore_object.h internal header.

Author: vstinner

Include/internal/pycore_object.h

@@ -1033,6 +1033,20 @@ enum _PyAnnotateFormat {
 
 int _PyObject_SetDict(PyObject *obj, PyObject *value);
 
+#ifndef Py_GIL_DISABLED
+static inline Py_ALWAYS_INLINE void _Py_INCREF_MORTAL(PyObject *op)
+{
+    assert(!_Py_IsStaticImmortal(op));
+    op->ob_refcnt++;
+    _Py_INCREF_STAT_INC();
+#if defined(Py_REF_DEBUG) && !defined(Py_LIMITED_API)
+    if (!_Py_IsImmortal(op)) {
+        _Py_INCREF_IncRefTotal();
+    }
+#endif
+}
+#endif
+
 #ifdef __cplusplus
 }
 #endif

Include/internal/pycore_stackref.h

@@ -626,7 +626,7 @@ _PyStackRef_FromPyObjectNew(PyObject *obj)
     if (_Py_IsImmortal(obj)) {
         return (_PyStackRef){ .bits = ((uintptr_t)obj) | Py_TAG_REFCNT};
     }
-    Py_INCREF_MORTAL(obj);
+    _Py_INCREF_MORTAL(obj);
     _PyStackRef ref = (_PyStackRef){ .bits = (uintptr_t)obj };
     PyStackRef_CheckValid(ref);
     return ref;
@@ -637,7 +637,7 @@ static inline _PyStackRef
 _PyStackRef_FromPyObjectNewMortal(PyObject *obj)
 {
     assert(obj != NULL);
-    Py_INCREF_MORTAL(obj);
+    _Py_INCREF_MORTAL(obj);
     _PyStackRef ref = (_PyStackRef){ .bits = (uintptr_t)obj };
     PyStackRef_CheckValid(ref);
     return ref;
@@ -654,14 +654,14 @@ PyStackRef_FromPyObjectBorrow(PyObject *obj)
 /* WARNING: This macro evaluates its argument more than once */
 #ifdef _WIN32
 #define PyStackRef_DUP(REF) \
-    (PyStackRef_RefcountOnObject(REF) ? (Py_INCREF_MORTAL(BITS_TO_PTR(REF)), (REF)) : (REF))
+    (PyStackRef_RefcountOnObject(REF) ? (_Py_INCREF_MORTAL(BITS_TO_PTR(REF)), (REF)) : (REF))
 #else
 static inline _PyStackRef
 PyStackRef_DUP(_PyStackRef ref)
 {
     assert(!PyStackRef_IsNull(ref));
     if (PyStackRef_RefcountOnObject(ref)) {
-        Py_INCREF_MORTAL(BITS_TO_PTR(ref));
+        _Py_INCREF_MORTAL(BITS_TO_PTR(ref));
     }
     return ref;
 }

Include/refcount.h

@@ -244,20 +244,6 @@ PyAPI_FUNC(void) Py_DecRef(PyObject *);
 PyAPI_FUNC(void) _Py_IncRef(PyObject *);
 PyAPI_FUNC(void) _Py_DecRef(PyObject *);
 
-#ifndef Py_GIL_DISABLED
-static inline Py_ALWAYS_INLINE void Py_INCREF_MORTAL(PyObject *op)
-{
-    assert(!_Py_IsStaticImmortal(op));
-    op->ob_refcnt++;
-    _Py_INCREF_STAT_INC();
-#if defined(Py_REF_DEBUG) && !defined(Py_LIMITED_API)
-    if (!_Py_IsImmortal(op)) {
-        _Py_INCREF_IncRefTotal();
-    }
-#endif
-}
-#endif
-
 static inline Py_ALWAYS_INLINE void Py_INCREF(PyObject *op)
 {
 #if defined(Py_LIMITED_API) && (Py_LIMITED_API+0 >= 0x030c0000 || defined(Py_REF_DEBUG))