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, 13 insertions, 0 deletions

diff --git a/host/lib/rfnoc/noc_block_base.cpp b/host/lib/rfnoc/noc_block_base.cpp
index 6e72decfe..c0d8cf2a9 100644
--- a/host/lib/rfnoc/noc_block_base.cpp
+++ b/host/lib/rfnoc/noc_block_base.cpp
@@ -113,7 +113,20 @@ void noc_block_base::_set_tick_rate(const double tick_rate)
     _tick_rate = tick_rate;
 }
 
+void noc_block_base::shutdown()
+{
+    RFNOC_LOG_TRACE("Calling deinit()");
+    deinit();
+    RFNOC_LOG_DEBUG("Invalidating register interface");
+    update_reg_iface();
+}
+
 std::shared_ptr<mb_controller> noc_block_base::get_mb_controller()
 {
     return _mb_controller;
 }
+
+void noc_block_base::deinit()
+{
+    RFNOC_LOG_DEBUG("deinit() called, but not implemented.");
+}