Remove component prefix from graph, connection and port filenames

[babeltrace.git] / lib / component / connection.c

diff --git a/lib/component/connection.c b/lib/component/connection.c
new file mode 100644 (file)
index 0000000..8867e4f
--- /dev/null
+++ b/lib/component/connection.c
@@ -0,0 +1,121 @@
+/*
+ * connection.c
+ *
+ * Babeltrace Connection
+ *
+ * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <babeltrace/component/connection-internal.h>
+#include <babeltrace/component/graph-internal.h>
+#include <babeltrace/component/port-internal.h>
+#include <babeltrace/component/component-source-internal.h>
+#include <babeltrace/component/component-filter-internal.h>
+#include <babeltrace/object-internal.h>
+#include <babeltrace/compiler.h>
+#include <glib.h>
+
+static
+void bt_connection_destroy(struct bt_object *obj)
+{
+       struct bt_connection *connection = container_of(obj,
+                       struct bt_connection, base);
+
+       /*
+        * No bt_put on ports as a connection only holds _weak_ references
+        * to them.
+        */
+       g_free(connection);
+}
+
+BT_HIDDEN
+struct bt_connection *bt_connection_create(
+               struct bt_graph *graph,
+               struct bt_port *upstream, struct bt_port *downstream)
+{
+       struct bt_connection *connection = NULL;
+
+       if (bt_port_get_type(upstream) != BT_PORT_TYPE_OUTPUT) {
+               goto end;
+       }
+       if (bt_port_get_type(downstream) != BT_PORT_TYPE_INPUT) {
+               goto end;
+       }
+
+       connection = g_new0(struct bt_connection, 1);
+       if (!connection) {
+               goto end;
+       }
+
+       bt_object_init(connection, bt_connection_destroy);
+       /* Weak references are taken, see comment in header. */
+       connection->output_port = upstream;
+       connection->input_port = downstream;
+       bt_port_add_connection(upstream, connection);
+       bt_port_add_connection(downstream, connection);
+       bt_object_set_parent(connection, &graph->base);
+end:
+       return connection;
+}
+
+struct bt_port *bt_connection_get_input_port(
+               struct bt_connection *connection)
+{
+       return connection ? connection->input_port : NULL;
+}
+
+struct bt_port *bt_connection_get_output_port(
+               struct bt_connection *connection)
+{
+       return connection ? connection->output_port : NULL;
+}
+
+struct bt_notification_iterator *
+bt_connection_create_notification_iterator(struct bt_connection *connection)
+{
+       struct bt_component *upstream_component = NULL;
+       struct bt_notification_iterator *it = NULL;
+
+       if (!connection) {
+               goto end;
+       }
+
+       upstream_component = bt_port_get_component(connection->output_port);
+       assert(upstream_component);
+
+       switch (bt_component_get_class_type(upstream_component)) {
+       case BT_COMPONENT_CLASS_TYPE_SOURCE:
+               it = bt_component_source_create_notification_iterator(
+                               upstream_component);
+               break;
+       case BT_COMPONENT_CLASS_TYPE_FILTER:
+               it = bt_component_filter_create_notification_iterator(
+                               upstream_component);
+               break;
+       default:
+               goto end;
+       }
+end:
+       bt_put(upstream_component);
+       return it;
+}