rfnoc: Add shutdown feature to blocks

On destruction, the rfnoc_graph will call shutdown() on all blocks. This
allows a safe de-initialization of blocks independent of the lifetime of
the noc_block_base::sptr.

Also adds the shutdown feature to null_block_control.

1 files changed, 9 insertions, 0 deletions

diff --git a/host/lib/include/uhdlib/rfnoc/node_accessor.hpp b/host/lib/include/uhdlib/rfnoc/node_accessor.hpp
index 3351c5531..93e2733cf 100644
--- a/host/lib/include/uhdlib/rfnoc/node_accessor.hpp
+++ b/host/lib/include/uhdlib/rfnoc/node_accessor.hpp
@@ -108,6 +108,15 @@ public:
     {
         return node->check_topology(connected_inputs, connected_outputs);
     }
+
+    /*! Put a node into shutdown
+     *
+     * See node_t::shutdown(), and also noc_block_base::shutdown() for details.
+     */
+    void shutdown(node_t* node)
+    {
+        node->shutdown();
+    }
 };