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gh-101819: Port _io.PyBytesIOBuffer_Type to heap type (#104264)

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Erlend E. Aasland 2023-05-07 16:01:27 +02:00 • committed by GitHub
parent a05bad3254
commit 7a7eaff95c
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4 changed files with 29 additions and 51 deletions
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71
Modules/_io/bytesio.c
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@ -1090,9 +1090,17 @@ bytesiobuf_releasebuffer(bytesiobuf *obj, Py_buffer *view)
b->exports--;
}
static int
bytesiobuf_clear(bytesiobuf *self)
{
Py_CLEAR(self->source);
return 0;
}
static int
bytesiobuf_traverse(bytesiobuf *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
Py_VISIT(self->source);
return 0;
}
@ -1100,54 +1108,29 @@ bytesiobuf_traverse(bytesiobuf *self, visitproc visit, void *arg)
static void
bytesiobuf_dealloc(bytesiobuf *self)
{
PyTypeObject *tp = Py_TYPE(self);
/* bpo-31095: UnTrack is needed before calling any callbacks */
PyObject_GC_UnTrack(self);
Py_CLEAR(self->source);
Py_TYPE(self)->tp_free(self);
(void)bytesiobuf_clear(self);
tp->tp_free(self);
Py_DECREF(tp);
}
static PyBufferProcs bytesiobuf_as_buffer = {
(getbufferproc) bytesiobuf_getbuffer,
(releasebufferproc) bytesiobuf_releasebuffer,
static PyType_Slot bytesiobuf_slots[] = {
{Py_tp_dealloc, bytesiobuf_dealloc},
{Py_tp_traverse, bytesiobuf_traverse},
{Py_tp_clear, bytesiobuf_clear},
// Buffer protocol
{Py_bf_getbuffer, bytesiobuf_getbuffer},
{Py_bf_releasebuffer, bytesiobuf_releasebuffer},
{0, NULL},
};
Py_EXPORTED_SYMBOL PyTypeObject _PyBytesIOBuffer_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"_io._BytesIOBuffer", /*tp_name*/
sizeof(bytesiobuf), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)bytesiobuf_dealloc, /*tp_dealloc*/
0, /*tp_vectorcall_offset*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_as_async*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
&bytesiobuf_as_buffer, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /*tp_flags*/
0, /*tp_doc*/
(traverseproc)bytesiobuf_traverse, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
0, /*tp_methods*/
0, /*tp_members*/
0, /*tp_getset*/
0, /*tp_base*/
0, /*tp_dict*/
0, /*tp_descr_get*/
0, /*tp_descr_set*/
0, /*tp_dictoffset*/
0, /*tp_init*/
0, /*tp_alloc*/
0, /*tp_new*/
PyType_Spec bytesiobuf_spec = {
.name = "_io._BytesIOBuffer",
.basicsize = sizeof(bytesiobuf),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_DISALLOW_INSTANTIATION),
.slots = bytesiobuf_slots,
};