pytalloc: Add default compare function.

2 files changed, 15 insertions, 1 deletions

diff --git a/lib/talloc/pytalloc.c b/lib/talloc/pytalloc.c
index 054704f42d..bea6961efc 100644
--- a/lib/talloc/pytalloc.c
+++ b/lib/talloc/pytalloc.c
@@ -88,7 +88,7 @@ PyObject *py_talloc_reference_ex(PyTypeObject *py_type, TALLOC_CTX *mem_ctx, voi
 }
 
 /**
- * Default (but slightly more useful than the default) implementation of Repr().
+ * Default (but only slightly more useful than the default) implementation of Repr().
  */
 PyObject *py_talloc_default_repr(PyObject *obj)
 {
@@ -99,6 +99,19 @@ PyObject *py_talloc_default_repr(PyObject *obj)
 				   type->tp_name, talloc_obj->ptr);
 }
 
+/**
+ * Default (but only slightly more useful than the default) implementation of cmp.
+ */
+int py_talloc_default_cmp(PyObject *_obj1, PyObject *_obj2)
+{
+	py_talloc_Object *obj1 = (py_talloc_Object *)_obj1,
+					 *obj2 = (py_talloc_Object *)_obj2;
+	if (obj1->ob_type != obj2->ob_type)
+		return (obj1->ob_type - obj2->ob_type);
+
+	return (py_talloc_get_ptr(obj1) - py_talloc_get_ptr(obj2));
+}
+
 static void py_cobject_talloc_free(void *ptr)
 {
 	talloc_free(ptr);
diff --git a/lib/talloc/pytalloc.h b/lib/talloc/pytalloc.h
index 4782756352..b17977a46c 100644
--- a/lib/talloc/pytalloc.h
+++ b/lib/talloc/pytalloc.h
@@ -55,5 +55,6 @@ PyObject *py_talloc_default_repr(PyObject *py_obj);
 PyObject *PyCObject_FromTallocPtr(void *);
 
 PyObject *PyString_FromString_check_null(const char *ptr);
+int py_talloc_default_cmp(PyObject *obj1, PyObject *obj2);
 
 #endif /* _PY_TALLOC_H_ */