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bpo-42972: _thread.RLock implements the GH protocol (GH-26734)

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The _thread.RLock type now fully implement the GC protocol: add a
traverse function and the Py_TPFLAGS_HAVE_GC flag.
This commit is contained in:
Victor Stinner 2021-06-15 15:09:24 +02:00 • committed by GitHub
parent 10a5c806d4
commit 1cd3d859a4
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2 changed files with 12 additions and 1 deletions
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2
Misc/NEWS.d/next/Library/2021-06-15-13-51-25.bpo-42972.UnyYo1.rst Normal file
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@ -0,0 +1,2 @@
The _thread.RLock type now fully implement the GC protocol: add a traverse
function and the :const:`Py_TPFLAGS_HAVE_GC` flag. Patch by Victor Stinner.

11
Modules/_threadmodule.c
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@ -327,6 +327,14 @@ typedef struct {
PyObject *in_weakreflist; PyObject *in_weakreflist;
} rlockobject; } rlockobject;
static int
rlock_traverse(rlockobject *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
return 0;
}
static void static void
rlock_dealloc(rlockobject *self) rlock_dealloc(rlockobject *self)
{ {
@ -579,13 +587,14 @@ static PyType_Slot rlock_type_slots[] = {
{Py_tp_alloc, PyType_GenericAlloc}, {Py_tp_alloc, PyType_GenericAlloc},
{Py_tp_new, rlock_new}, {Py_tp_new, rlock_new},
{Py_tp_members, rlock_type_members}, {Py_tp_members, rlock_type_members},
{Py_tp_traverse, rlock_traverse},
{0, 0}, {0, 0},
}; };
static PyType_Spec rlock_type_spec = { static PyType_Spec rlock_type_spec = {
.name = "_thread.RLock", .name = "_thread.RLock",
.basicsize = sizeof(rlockobject), .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, .slots = rlock_type_slots,
}; };