python: Fixed some memory leaks in the write and notification callbacks.

Thanks to Volkmar Uhlig for the hint.

diff --git a/src/python.c b/src/python.c
index 7a92b48..384ca8b 100644 (file)
--- a/src/python.c
+++ b/src/python.c
@@ -368,14 +368,17 @@ static int cpy_write_callback(const data_set_t *ds, const value_list_t *value_li
                        }
                        if (PyErr_Occurred() != NULL) {
                                cpy_log_exception("value building for write callback");
+                               Py_DECREF(list);
                                CPY_RETURN_FROM_THREADS 0;
                        }
                }
-               v = PyObject_CallFunction((void *) &ValuesType, "sOssssdi", value_list->type, list,
-                               value_list->plugin_instance, value_list->type_instance, value_list->plugin,
-                               value_list->host, (double) value_list->time, value_list->interval);
+               v = PyObject_CallFunction((void *) &ValuesType, "sOssssdi", value_list->type,
+                               list, value_list->plugin_instance, value_list->type_instance,
+                               value_list->plugin, value_list->host, (double) value_list->time,
+                               value_list->interval); /* New reference. */
                Py_DECREF(list);
                ret = PyObject_CallFunctionObjArgs(c->callback, v, c->data, (void *) 0); /* New reference. */
+               Py_XDECREF(v);
                if (ret == NULL) {
                        cpy_log_exception("write callback");
                } else {
@@ -392,8 +395,9 @@ static int cpy_notification_callback(const notification_t *notification, user_da
        CPY_LOCK_THREADS
                n = PyObject_CallFunction((void *) &NotificationType, "ssssssdi", notification->type, notification->message,
                                notification->plugin_instance, notification->type_instance, notification->plugin,
-                               notification->host, (double) notification->time, notification->severity);
+                               notification->host, (double) notification->time, notification->severity); /* New reference. */
                ret = PyObject_CallFunctionObjArgs(c->callback, n, c->data, (void *) 0); /* New reference. */
+               Py_XDECREF(n);
                if (ret == NULL) {
                        cpy_log_exception("notification callback");
                } else {