Merge pull request #10085 from impact27/fix_traitlets_kernel_died

PR: Stop IPython console channels faster

[ci skip]

spyder/plugins/ipythonconsole/widgets/client.py

@@ -70,20 +70,6 @@
     time.monotonic = time.time
 
 
-#-----------------------------------------------------------------------------
-# Auxiliary functions
-#-----------------------------------------------------------------------------
-def background(f):
-    """
-    Call a function in a simple thread, to prevent blocking
-
-    Taken from the Jupyter Qtconsole project
-    """
-    t = Thread(target=f)
-    t.start()
-    return t
-
-
 #-----------------------------------------------------------------------------
 # Client widget
 #-----------------------------------------------------------------------------
@@ -503,8 +489,9 @@ def shutdown(self):
                 now = False
             self.shellwidget.spyder_kernel_comm.close()
             self.shellwidget.kernel_manager.shutdown_kernel(now=now)
+            self.shellwidget.pdb_history_file.save_thread.stop()
         if self.shellwidget.kernel_client is not None:
-            self.shellwidget.kernel_client.shutdown()
+            self.shellwidget.kernel_client.stop_channels()
 
     def interrupt_kernel(self):
         """Interrupt the associanted Spyder kernel if it's running"""