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Finished implementing gc.get_referrents(): dealt with error and end

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cases, wrote docs, added a test.
This commit is contained in:
Tim Peters 2003-04-08 16:39:48 +00:00
parent fb2ab4d5ae
commit 0f81ab6d88
4 changed files with 58 additions and 7 deletions
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21
Modules/gcmodule.c
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@ -857,12 +857,11 @@ gc_get_referrers(PyObject *self, PyObject *args)
return result;
}
/* Append obj to list; return true if error (out of memory), false if OK. */
static int
referrentsvisit(PyObject *obj, PyObject *list)
{
if (PyList_Append(list, obj) < 0)
return 1;
return 0;
return PyList_Append(list, obj) < 0;
}
PyDoc_STRVAR(gc_get_referrents__doc__,
@ -874,13 +873,23 @@ gc_get_referrents(PyObject *self, PyObject *args)
{
int i;
PyObject *result = PyList_New(0);
if (result == NULL)
return NULL;
for (i = 0; i < PyTuple_GET_SIZE(args); i++) {
traverseproc traverse;
PyObject *obj = PyTuple_GET_ITEM(args, i);
traverseproc traverse = obj->ob_type->tp_traverse;
if (!traverse)
if (! PyObject_IS_GC(obj))
continue;
if (traverse(obj, (visitproc)referrentsvisit, result))
traverse = obj->ob_type->tp_traverse;
if (! traverse)
continue;
if (traverse(obj, (visitproc)referrentsvisit, result)) {
Py_DECREF(result);
return NULL;
}
}
return result;
}