Use Py_VISIT in all tp_traverse methods, instead of traversing manually or
using a custom, nearly-identical macro. This probably changes how some of
these functions are compiled, which may result in fractionally slower (or
faster) execution. Considering the nature of traversal, visiting much of the
address space in unpredictable patterns, I'd argue the code readability and
maintainability is well worth it ;P
diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index bfa25e9..561ba4a 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -377,13 +377,7 @@
descr_traverse(PyObject *self, visitproc visit, void *arg)
{
PyDescrObject *descr = (PyDescrObject *)self;
- int err;
-
- if (descr->d_type) {
- err = visit((PyObject *)(descr->d_type), arg);
- if (err)
- return err;
- }
+ Py_VISIT(descr->d_type);
return 0;
}
@@ -814,13 +808,7 @@
proxy_traverse(PyObject *self, visitproc visit, void *arg)
{
proxyobject *pp = (proxyobject *)self;
- int err;
-
- if (pp->dict) {
- err = visit(pp->dict, arg);
- if (err)
- return err;
- }
+ Py_VISIT(pp->dict);
return 0;
}
@@ -999,18 +987,8 @@
wrapper_traverse(PyObject *self, visitproc visit, void *arg)
{
wrapperobject *wp = (wrapperobject *)self;
- int err;
-
- if (wp->descr) {
- err = visit((PyObject *)(wp->descr), arg);
- if (err)
- return err;
- }
- if (wp->self) {
- err = visit(wp->self, arg);
- if (err)
- return err;
- }
+ Py_VISIT(wp->descr);
+ Py_VISIT(wp->self);
return 0;
}
@@ -1237,20 +1215,10 @@
property_traverse(PyObject *self, visitproc visit, void *arg)
{
propertyobject *pp = (propertyobject *)self;
- int err;
-
-#define VISIT(SLOT) \
- if (pp->SLOT) { \
- err = visit((PyObject *)(pp->SLOT), arg); \
- if (err) \
- return err; \
- }
-
- VISIT(prop_get);
- VISIT(prop_set);
- VISIT(prop_del);
- VISIT(prop_doc);
-
+ Py_VISIT(pp->prop_get);
+ Py_VISIT(pp->prop_set);
+ Py_VISIT(pp->prop_del);
+ Py_VISIT(pp->prop_doc);
return 0;
}