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Round 1 of Neil Schemenauer's GC patches:

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This patch adds the type methods traverse and clear necessary for GC
implementation.
This commit is contained in:
Jeremy Hylton 2000-06-23 14:18:11 +00:00
parent a392dcb211
commit 8caad49c30
6 changed files with 218 additions and 3 deletions
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29
Objects/listobject.c
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@ -1418,6 +1418,30 @@ listremove(self, args)
return NULL;
}
static int
list_traverse(PyListObject *o, visitproc visit, void *arg)
{
int i, err;
PyObject *x;
for (i = o->ob_size; --i >= 0; ) {
x = o->ob_item[i];
if (x != NULL) {
err = visit(x, arg);
if (err)
return err;
}
}
return 0;
}
static int
list_clear(PyListObject *lp)
{
(void) PyList_SetSlice((PyObject *)lp, 0, lp->ob_size, 0);
return 0;
}
static char append_doc[] =
"L.append(object) -- append object to end";
static char extend_doc[] =
@ -1491,6 +1515,9 @@ PyTypeObject PyList_Type = {
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /* tp_doc */
(traverseproc)list_traverse, /* tp_traverse */
(inquiry)list_clear, /* tp_clear */
};
@ -1567,5 +1594,7 @@ static PyTypeObject immutable_list_type = {
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /* tp_doc */
(traverseproc)list_traverse, /* tp_traverse */
};