class DEBUGGER__::Session

def deactivate
  get_thread_client.deactivate
  @thread_stopper.disable
  @tp_load_script.disable
  @tp_thread_begin.disable
  @tp_thread_end.disable
  @bps.each_value{|bp| bp.disable}
  @th_clients.each_value{|thc| thc.close}
  @tracers.values.each{|t| t.disable}
  @q_evt.close
  @ui&.deactivate
  @ui = nil
end