bitbake: event: Queue offline events for the UI

Messages printed when no UI is connected (e.g. memres) are currently lost.
Use the existing queue mechanism to queue these until a UI attaches, then
replay them. This isn't ideal but better than the current situation of
losing them entirely.

(Bitbake rev: cb241fb8544dfb05646dbae1a1b04e17878a466c)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/server/process.py

@@ -137,7 +137,7 @@ class ProcessServer(Process, BaseImplServer):
                 logger.exception('Running command %s', command)
 
         self.event_queue.close()
-        bb.event.unregister_UIHhandler(self.event_handle.value)
+        bb.event.unregister_UIHhandler(self.event_handle.value, True)
         self.command_channel.close()
         self.cooker.shutdown(True)
         self.quitout.close()

bitbake/lib/bb/server/xmlrpc.py

@@ -125,7 +125,7 @@ class BitBakeServerCommands():
         """
         Unregister a remote UI Event Handler
         """
-        return bb.event.unregister_UIHhandler(handlerNum)
+        return bb.event.unregister_UIHhandler(handlerNum, True)
 
     def runCommand(self, command):
         """