bpo-42972: _thread.RLock implements the GH protocol (GH-26734)
The _thread.RLock type now fully implement the GC protocol: add a
traverse function and the Py_TPFLAGS_HAVE_GC flag.
(cherry picked from commit 1cd3d859a49b047dd08abb6f44f0539564d3525a)
Co-authored-by: Victor Stinner <vstinner@python.org>
diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
index 6924d65..5a2001c 100644
--- a/Modules/_threadmodule.c
+++ b/Modules/_threadmodule.c
@@ -327,6 +327,14 @@ typedef struct {
PyObject *in_weakreflist;
} rlockobject;
+static int
+rlock_traverse(rlockobject *self, visitproc visit, void *arg)
+{
+ Py_VISIT(Py_TYPE(self));
+ return 0;
+}
+
+
static void
rlock_dealloc(rlockobject *self)
{
@@ -579,13 +587,14 @@ static PyType_Slot rlock_type_slots[] = {
{Py_tp_alloc, PyType_GenericAlloc},
{Py_tp_new, rlock_new},
{Py_tp_members, rlock_type_members},
+ {Py_tp_traverse, rlock_traverse},
{0, 0},
};
static PyType_Spec rlock_type_spec = {
.name = "_thread.RLock",
.basicsize = sizeof(rlockobject),
- .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+ .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_BASETYPE,
.slots = rlock_type_slots,
};