debug timing added for performance test

src/damaris/gui/DamarisGUI.py

@@ -589,8 +589,10 @@ class DamarisGUI:
         self.toolbar_pause_button.set_active( False )
 
         # delete old data
+        data_cleanup_start = time.time()
         self.data = None
         self.monitor.observe_data_pool( self.data )
+        print(f"DEBUG: Data cleanup took {time.time() - data_cleanup_start:.3f}s")
 
         # set the text mark for hdf logging
         if self.log.textbuffer.get_mark( "lastdumped" ) is None:
@@ -3046,21 +3048,29 @@ class MonitorWidgets:
         register a listener and save reference to data
         assume to be in gtk/gdk lock
         """
+        import time
+        cleanup_start = time.time()
         gdk.threads_enter( )
         try:
             if self.data_pool is not None:
                 # maybe some extra cleanup needed
                 print("ToDo: cleanup widgets")
+                widget_cleanup_start = time.time()
                 if self.displayed_data[ 1 ] is not None and hasattr( self.displayed_data[ 1 ], "unregister_listener" ):
                     self.displayed_data[ 1 ].unregister_listener( self.datastructures_listener )
                     self.displayed_data[ 1 ] = None
                 self.displayed_data = [ None, None ]
+                print(f"DEBUG: Widget cleanup took {time.time() - widget_cleanup_start:.3f}s")
+                
+                listener_cleanup_start = time.time()
                 self.data_pool.unregister_listener( self.datapool_listener )
                 self.data_pool = None
+                print(f"DEBUG: Listener cleanup took {time.time() - listener_cleanup_start:.3f}s")
 
                 self.update_counter_lock.acquire( )
                 self.update_counter = 0
                 self.update_counter_lock.release( )
+                print(f"DEBUG: Total data pool cleanup took {time.time() - cleanup_start:.3f}s")
 
             # display states
             self.source_list_reset( )