From: Philippe Proulx <eeppeliteloop@gmail.com>
Date: Wed, 7 Jun 2017 22:12:03 +0000 (-0400)
Subject: Cancel the graph on destruction
X-Git-Tag: v2.0.0-pre1~36
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=49682acd61d65c4986fc2b61c13d7d7a2d28127e

Cancel the graph on destruction

Consider the graph as canceled at the beginning of its destruction. This
prohibits the use of some operations that are restricted to be used when
the graph is active and running.

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/lib/graph/graph.c b/lib/graph/graph.c
index 10dd1944..5b5acae7 100644
--- a/lib/graph/graph.c
+++ b/lib/graph/graph.c
@@ -80,6 +80,12 @@ void bt_graph_destroy(struct bt_object *obj)
 	BT_LOGD("Destroying graph: addr=%p", graph);
 	obj->ref_count.count++;
 
+	/*
+	 * Cancel the graph to disallow some operations, like creating
+	 * notification iterators and adding ports to components.
+	 */
+	(void) bt_graph_cancel(graph);
+
 	if (graph->connections) {
 		BT_LOGD_STR("Destroying connections.");
 		g_ptr_array_free(graph->connections, TRUE);