gh-111968: Use per-thread slice_cache in free-threading (gh-113972)

1 files changed, 15 insertions, 11 deletions

diff --git a/Objects/sliceobject.c b/Objects/sliceobject.c
index a3ed0c0..9ec8ea8 100644
--- a/Objects/sliceobject.c
+++ b/Objects/sliceobject.c
@@ -103,16 +103,20 @@ PyObject _Py_EllipsisObject = _PyObject_HEAD_INIT(&PyEllipsis_Type);
 
 /* Slice object implementation */
 
-
-void _PySlice_Fini(PyInterpreterState *interp)
+void _PySlice_ClearCache(_PyFreeListState *state)
 {
-    PySliceObject *obj = interp->slice_cache;
+    PySliceObject *obj = state->slice_state.slice_cache;
     if (obj != NULL) {
-        interp->slice_cache = NULL;
+        state->slice_state.slice_cache = NULL;
         PyObject_GC_Del(obj);
     }
 }
 
+void _PySlice_Fini(_PyFreeListState *state)
+{
+    _PySlice_ClearCache(state);
+}
+
 /* start, stop, and step are python objects with None indicating no
    index is present.
 */
@@ -122,11 +126,11 @@ _PyBuildSlice_Consume2(PyObject *start, PyObject *stop, PyObject *step)
 {
     assert(start != NULL && stop != NULL && step != NULL);
 
-    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyFreeListState *state = _PyFreeListState_GET();
     PySliceObject *obj;
-    if (interp->slice_cache != NULL) {
-        obj = interp->slice_cache;
-        interp->slice_cache = NULL;
+    if (state->slice_state.slice_cache != NULL) {
+        obj = state->slice_state.slice_cache;
+        state->slice_state.slice_cache = NULL;
         _Py_NewReference((PyObject *)obj);
     }
     else {
@@ -354,13 +358,13 @@ Create a slice object.  This is used for extended slicing (e.g. a[0:10:2]).");
 static void
 slice_dealloc(PySliceObject *r)
 {
-    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyFreeListState *state = _PyFreeListState_GET();
     _PyObject_GC_UNTRACK(r);
     Py_DECREF(r->step);
     Py_DECREF(r->start);
     Py_DECREF(r->stop);
-    if (interp->slice_cache == NULL) {
-        interp->slice_cache = r;
+    if (state->slice_state.slice_cache == NULL) {
+        state->slice_state.slice_cache = r;
     }
     else {
         PyObject_GC_Del(r);