lib: Make graph listeners return an error status

[babeltrace.git] / lib / graph / component-filter.c

diff --git a/lib/graph/component-filter.c b/lib/graph/component-filter.c
index 32a12924737f7af43569dafecdaf0cc2c8dfa5e7..b59543b8d95348cb4682a7109212be3db380d990 100644 (file)
--- a/lib/graph/component-filter.c
+++ b/lib/graph/component-filter.c
@@ -56,6 +56,22 @@ end:
        return (void *) filter;
 }
 
+const bt_component_class_filter *
+bt_component_filter_borrow_class_const(
+               const bt_component_filter *component)
+{
+       struct bt_component_class *cls;
+
+       BT_ASSERT_PRE_NON_NULL(component, "Component");
+
+       cls = component->parent.class;
+
+       BT_ASSERT(cls);
+       BT_ASSERT(cls->type == BT_COMPONENT_CLASS_TYPE_FILTER);
+
+       return (bt_component_class_filter *) cls;
+}
+
 uint64_t bt_component_filter_get_output_port_count(
                const struct bt_component_filter *comp)
 {
@@ -100,13 +116,12 @@ enum bt_self_component_status bt_self_component_filter_add_output_port(
                struct bt_self_component_port_output **self_port)
 {
        struct bt_component *comp = (void *) self_comp;
-       int status = BT_SELF_COMPONENT_STATUS_OK;
+       enum bt_self_component_status status;
        struct bt_port *port = NULL;
 
        /* bt_component_add_output_port() logs details and errors */
-       port = (void *) bt_component_add_output_port(comp, name, user_data);
-       if (!port) {
-               status = BT_SELF_COMPONENT_STATUS_NOMEM;
+       status = bt_component_add_output_port(comp, name, user_data, &port);
+       if (status != BT_SELF_COMPONENT_STATUS_OK) {
                goto end;
        }
 
@@ -168,14 +183,13 @@ enum bt_self_component_status bt_self_component_filter_add_input_port(
                const char *name, void *user_data,
                struct bt_self_component_port_input **self_port)
 {
-       int status = BT_SELF_COMPONENT_STATUS_OK;
+       enum bt_self_component_status status;
        struct bt_port *port = NULL;
        struct bt_component *comp = (void *) self_comp;
 
        /* bt_component_add_input_port() logs details/errors */
-       port = (void *) bt_component_add_input_port(comp, name, user_data);
-       if (!port) {
-               status = BT_SELF_COMPONENT_STATUS_NOMEM;
+       status = bt_component_add_input_port(comp, name, user_data, &port);
+       if (status != BT_SELF_COMPONENT_STATUS_OK) {
                goto end;
        }