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bpo-44116: Add GC support to _csv heap types #26074

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merged 4 commits into from
May 12, 2021
Merged

bpo-44116: Add GC support to _csv heap types #26074

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01edb37
bpo-44116: Add GC support to _csv heap types
May 12, 2021
b8772d6
Revert _csv.Error changes
May 12, 2021
19e2952
Use tp_clear iso. tp_finalize
May 12, 2021
fe74fc2
Only dealloc should free memory
May 12, 2021
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23 changes: 22 additions & 1 deletion Modules/_csv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -315,6 +315,7 @@ static PyGetSetDef Dialect_getsetlist[] = {
static void
Dialect_dealloc(DialectObj *self)
{
PyObject_GC_UnTrack(self);
PyTypeObject *tp = Py_TYPE(self);
Py_CLEAR(self->lineterminator);
tp->tp_free((PyObject *)self);
Expand Down Expand Up @@ -512,6 +513,13 @@ PyDoc_STRVAR(Dialect_Type_doc,
"\n"
"The Dialect type records CSV parsing and generation options.\n");

static int
Dialect_traverse(PyObject *self, visitproc visit, void *arg)
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{
Py_VISIT(Py_TYPE(self));
return 0;
}

static PyType_Slot Dialect_Type_slots[] = {
{Py_tp_doc, (char*)Dialect_Type_doc},
{Py_tp_members, Dialect_memberlist},
Expand All @@ -520,13 +528,14 @@ static PyType_Slot Dialect_Type_slots[] = {
{Py_tp_methods, dialect_methods},
{Py_tp_finalize, Dialect_finalize},
{Py_tp_dealloc, Dialect_dealloc},
{Py_tp_traverse, Dialect_traverse},
{0, NULL}
};

PyType_Spec Dialect_Type_spec = {
.name = "_csv.Dialect",
.basicsize = sizeof(DialectObj),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
.slots = Dialect_Type_slots,
};

Expand Down Expand Up @@ -914,6 +923,7 @@ Reader_traverse(ReaderObj *self, visitproc visit, void *arg)
Py_VISIT(self->dialect);
Py_VISIT(self->input_iter);
Py_VISIT(self->fields);
Py_VISIT(Py_TYPE(self));
return 0;
}

Expand Down Expand Up @@ -1339,6 +1349,7 @@ Writer_traverse(WriterObj *self, visitproc visit, void *arg)
Py_VISIT(self->dialect);
Py_VISIT(self->write);
Py_VISIT(self->error_obj);
Py_VISIT(Py_TYPE(self));
return 0;
}

Expand All @@ -1351,6 +1362,15 @@ Writer_clear(WriterObj *self)
return 0;
}

static void
Writer_dealloc(WriterObj *self)
{
PyObject_GC_UnTrack(self);
PyTypeObject *tp = Py_TYPE(self);
tp->tp_clear((PyObject *)self);
Py_DECREF(tp);
}

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static void
Writer_finalize(WriterObj *self)
{
Expand All @@ -1372,6 +1392,7 @@ static PyType_Slot Writer_Type_slots[] = {
{Py_tp_doc, (char*)Writer_Type_doc},
{Py_tp_traverse, Writer_traverse},
{Py_tp_clear, Writer_clear},
{Py_tp_dealloc, Writer_dealloc},
{Py_tp_methods, Writer_methods},
{Py_tp_members, Writer_memberlist},
{0, NULL}
Expand Down