Make node_graph::count_graph_users() const (#1320)

brawner · web-flow · commit e62f3280f55e · 2020-09-18T15:36:35.000-07:00
Signed-off-by: Stephen Brawner &lt;brawner@gmail.com&gt;
diff --git a/rclcpp/include/rclcpp/node_interfaces/node_graph.hpp b/rclcpp/include/rclcpp/node_interfaces/node_graph.hpp
@@ -110,7 +110,7 @@ class NodeGraph : public NodeGraphInterface
 
   RCLCPP_PUBLIC
   size_t
-  count_graph_users() override;
+  count_graph_users() const override;
 
   RCLCPP_PUBLIC
   std::vector<rclcpp::TopicEndpointInfo>
diff --git a/rclcpp/include/rclcpp/node_interfaces/node_graph_interface.hpp b/rclcpp/include/rclcpp/node_interfaces/node_graph_interface.hpp
@@ -278,7 +278,7 @@ class NodeGraphInterface
   RCLCPP_PUBLIC
   virtual
   size_t
-  count_graph_users() = 0;
+  count_graph_users() const = 0;
 
   /// Return the topic endpoint information about publishers on a given topic.
   /**
diff --git a/rclcpp/src/rclcpp/node_interfaces/node_graph.cpp b/rclcpp/src/rclcpp/node_interfaces/node_graph.cpp
@@ -414,7 +414,7 @@ NodeGraph::wait_for_graph_change(
 }
 
 size_t
-NodeGraph::count_graph_users()
+NodeGraph::count_graph_users() const
 {
   return graph_users_count_.load();
 }

Original file line number	Diff line number	Diff line change
`@@ -414,7 +414,7 @@ NodeGraph::wait_for_graph_change(`
`414`	`414`	`}`
`415`	`415`
`416`	`416`	`size_t`
`417`		`-NodeGraph::count_graph_users()`
	`417`	`+NodeGraph::count_graph_users() const`
`418`	`418`	`{`
`419`	`419`	`return graph_users_count_.load();`
`420`	`420`	`}`