*/
#include <babeltrace/graph/graph.h>
+#include <babeltrace/graph/component-status.h>
#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/object-internal.h>
+#include <babeltrace/assert-internal.h>
+#include <stdlib.h>
#include <glib.h>
struct bt_component;
/* Queue of pointers (weak references) to sink bt_components. */
GQueue *sinks_to_consume;
+ bt_bool canceled;
+ bt_bool in_remove_listener;
+ bt_bool has_sink;
+
+ /*
+ * If this is BT_FALSE, then the public API's consuming
+ * functions (bt_graph_consume() and bt_graph_run()) return
+ * BT_GRAPH_STATUS_CANNOT_CONSUME. The internal "no check"
+ * functions always work.
+ *
+ * In bt_output_port_notification_iterator_create(), on success,
+ * this flag is cleared so that the iterator remains the only
+ * consumer for the graph's lifetime.
+ */
+ bt_bool can_consume;
+
struct {
GArray *port_added;
GArray *port_removed;
- GArray *port_connected;
- GArray *port_disconnected;
+ GArray *ports_connected;
+ GArray *ports_disconnected;
} listeners;
};
+static inline
+void bt_graph_set_can_consume(struct bt_graph *graph, bt_bool can_consume)
+{
+ BT_ASSERT(graph);
+ graph->can_consume = can_consume;
+}
+
+BT_HIDDEN
+enum bt_graph_status bt_graph_consume_no_check(struct bt_graph *graph);
+
+BT_HIDDEN
+enum bt_graph_status bt_graph_consume_sink_no_check(struct bt_graph *graph,
+ struct bt_component *sink);
+
BT_HIDDEN
void bt_graph_notify_port_added(struct bt_graph *graph, struct bt_port *port);
struct bt_component *comp, struct bt_port *port);
BT_HIDDEN
-void bt_graph_notify_port_connected(struct bt_graph *graph,
- struct bt_port *port);
+void bt_graph_notify_ports_connected(struct bt_graph *graph,
+ struct bt_port *upstream_port, struct bt_port *downstream_port);
BT_HIDDEN
-void bt_graph_notify_port_disconnected(struct bt_graph *graph,
- struct bt_component *comp, struct bt_port *port);
+void bt_graph_notify_ports_disconnected(struct bt_graph *graph,
+ struct bt_component *upstream_comp,
+ struct bt_component *downstream_comp,
+ struct bt_port *upstream_port,
+ struct bt_port *downstream_port);
+
+BT_HIDDEN
+void bt_graph_remove_connection(struct bt_graph *graph,
+ struct bt_connection *connection);
+
+/*
+ * This only works with a component which is not connected at this
+ * point.
+ *
+ * Also the reference count of `component` should be 0 when you call
+ * this function, which means only `graph` owns the component, so it
+ * is safe to destroy.
+ */
+BT_HIDDEN
+int bt_graph_remove_unconnected_component(struct bt_graph *graph,
+ struct bt_component *component);
+
+static inline
+const char *bt_graph_status_string(enum bt_graph_status status)
+{
+ switch (status) {
+ case BT_GRAPH_STATUS_CANCELED:
+ return "BT_GRAPH_STATUS_CANCELED";
+ case BT_GRAPH_STATUS_AGAIN:
+ return "BT_GRAPH_STATUS_AGAIN";
+ case BT_GRAPH_STATUS_END:
+ return "BT_GRAPH_STATUS_END";
+ case BT_GRAPH_STATUS_OK:
+ return "BT_GRAPH_STATUS_OK";
+ case BT_GRAPH_STATUS_INVALID:
+ return "BT_GRAPH_STATUS_INVALID";
+ case BT_GRAPH_STATUS_NO_SINK:
+ return "BT_GRAPH_STATUS_NO_SINK";
+ case BT_GRAPH_STATUS_ERROR:
+ return "BT_GRAPH_STATUS_ERROR";
+ case BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION:
+ return "BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION";
+ case BT_GRAPH_STATUS_NOMEM:
+ return "BT_GRAPH_STATUS_NOMEM";
+ case BT_GRAPH_STATUS_CANNOT_CONSUME:
+ return "BT_GRAPH_STATUS_CANNOT_CONSUME";
+ default:
+ return "(unknown)";
+ }
+}
+
+static inline
+enum bt_graph_status bt_graph_status_from_component_status(
+ enum bt_component_status comp_status)
+{
+ switch (comp_status) {
+ case BT_COMPONENT_STATUS_OK:
+ return BT_GRAPH_STATUS_OK;
+ case BT_COMPONENT_STATUS_END:
+ return BT_GRAPH_STATUS_END;
+ case BT_COMPONENT_STATUS_AGAIN:
+ return BT_GRAPH_STATUS_AGAIN;
+ case BT_COMPONENT_STATUS_REFUSE_PORT_CONNECTION:
+ return BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION;
+ case BT_COMPONENT_STATUS_ERROR:
+ return BT_GRAPH_STATUS_ERROR;
+ case BT_COMPONENT_STATUS_UNSUPPORTED:
+ return BT_GRAPH_STATUS_ERROR;
+ case BT_COMPONENT_STATUS_INVALID:
+ return BT_GRAPH_STATUS_INVALID;
+ case BT_COMPONENT_STATUS_NOMEM:
+ return BT_GRAPH_STATUS_NOMEM;
+ case BT_COMPONENT_STATUS_NOT_FOUND:
+ return BT_GRAPH_STATUS_ERROR;
+ default:
+#ifdef BT_LOGF
+ BT_LOGF("Unknown component status: status=%d", comp_status);
+#endif
+ abort();
+ }
+}
#endif /* BABELTRACE_COMPONENT_COMPONENT_GRAPH_INTERNAL_H */