C++ EventChannel_var::_retn方法代码示例

CosNotifyChannelAdmin::EventChannel_ptr
TAO_Notify_Lanes_Supplier_Client::create_ec (void)
{
  CosNotifyChannelAdmin::EventChannel_var ec;

  CosNotifyChannelAdmin::EventChannelFactory_var ecf = this->orb_objects_.notify_factory ();

  // Create an EventChannel
  CosNotification::QoSProperties qos;
  CosNotification::AdminProperties admin;

  // Create an event channel
  CosNotifyChannelAdmin::ChannelID id;

  ec = ecf->create_channel (qos,
                            admin,
                            id);

  // Set the Qos : 2 Lanes
  NotifyExt::ThreadPoolLanesParams tpl_params;

  tpl_params.priority_model = NotifyExt::CLIENT_PROPAGATED;
  tpl_params.server_priority = 0;
  tpl_params.stacksize = 0;
  tpl_params.lanes.length (this->consumer_count_ + 1);
  tpl_params.allow_borrowing = 0;
  tpl_params.allow_request_buffering = 0;
  tpl_params.max_buffered_requests = 0;
  tpl_params.max_request_buffer_size = 0;

  /*
   * Note that we actually create 1 extra Lane.
   * The extra Lane at priority 0 is created to match the priority 0 of the supplier thread.
   * As the ProxyConsumer is activated in an RT POA with lanes, each invocation must mach some lane.
   * Now, we typically reserve higer priorities to make requests and the lowest priority 0 for administrative calls
   * e.g. <subscription_change>. If we do not have a lane at the lowest 0 priority, then the invocation made from
   * the supplier at priority 0 will fail.
   */
  tpl_params.lanes[0].lane_priority = 0; // Priority 0
  tpl_params.lanes[0].static_threads = 1;
  tpl_params.lanes[0].dynamic_threads = 0;

  RTCORBA::Priority priority = 1; // The priority at which we send an event each.

  for (int i = 1; i <= this->consumer_count_; ++i, ++priority)
    {
      tpl_params.lanes[i].lane_priority = priority;
      tpl_params.lanes[i].static_threads = 1;
      tpl_params.lanes[i].dynamic_threads = 0;
    }

  qos.length (1);
  qos[0].name = CORBA::string_dup (NotifyExt::ThreadPoolLanes);
  qos[0].value <<= tpl_params;

  // Note that instead of <set_qos>, the <qos> can also be passed while creating the channel.
  ec->set_qos (qos);

  return ec._retn ();
}

::CosNotifyChannelAdmin::EventChannel_ptr TAO_Notify_EventChannelFactory::create_channel (
    const CosNotification::QoSProperties & initial_qos,
    const CosNotification::AdminProperties & initial_admin,
    CosNotifyChannelAdmin::ChannelID_out id
)
{
    CosNotifyChannelAdmin::EventChannel_var ec =
        TAO_Notify_PROPERTIES::instance()->builder()->build_event_channel (this
                , initial_qos
                , initial_admin
                , id);
    this->self_change ();
    return ec._retn ();
}

CosNotifyChannelAdmin::EventChannel_ptr
TAO_Notify_ThreadPool_Supplier_Client::create_ec (void)
{
  CosNotifyChannelAdmin::EventChannel_var ec;

  CosNotifyChannelAdmin::EventChannelFactory_var ecf = this->orb_objects_.notify_factory ();

  // Create an EventChannel
  CosNotification::QoSProperties qos;
  CosNotification::AdminProperties admin;

  // Create an event channel
  CosNotifyChannelAdmin::ChannelID id;

  ec = ecf->create_channel (qos,
                            admin,
                            id);

  // Set the Qos
  // See $TAO_ROOT/orbsvcs/orbsvcs/NotifyExt.idl
  if (this->ec_thread_count_)
    {
      NotifyExt::ThreadPoolParams tp_params = { NotifyExt::CLIENT_PROPAGATED, 0,
                                                0, static_cast<CORBA::ULong> (this->ec_thread_count_),
                                                0, 0, 0, 0, 0 };

      CosNotification::QoSProperties qos (1);
      qos.length (1);
      qos[0].name = CORBA::string_dup (NotifyExt::ThreadPool);
      qos[0].value <<= tp_params;

      // Note that instead of <set_qos>, the <qos> can also be passed while creating the channel.
      ec->set_qos (qos);
    }

  ACE_DEBUG ((LM_DEBUG, "(%P,%t) Created Event Channel with %d threads\n", this->ec_thread_count_));

  return ec._retn ();
}

CosNotifyChannelAdmin::EventChannel_var
get_event_channel(CORBA::ORB_ptr orb)

{
  CosNotifyChannelAdmin::EventChannel_var ec;
  CosNotifyChannelAdmin::ChannelID id;
  CosNotification::QoSProperties init_qos(0);
  CosNotification::AdminProperties init_admin(0);



  std::cout << "Get CosNotifyChannelAdmin::EventChannelFactory"  << std::endl;
  std::cout << "IorEventChannelFactory=" << ior << std::endl;
  CORBA::Object_var obj = orb->string_to_object(ior);

  if (CORBA::is_nil(obj.in ()))
  {
    std::cerr << "Bad ec_fact.ior " << std::endl;
    exit(1);
  }


  CosNotifyChannelAdmin::EventChannelFactory_var factory =
    CosNotifyChannelAdmin::EventChannelFactory::_narrow(obj.in ());
  if (CORBA::is_nil(factory.in()))
  {
    std::cerr << "Could not _narrow object to type CosNotifyChannelAdmin::EventChannelFactory" << std::endl;
    exit(1);
  }

  //Get the first ec
  CosNotifyChannelAdmin::ChannelIDSeq_var channelIdSeq;
  try
  {
    channelIdSeq = factory->get_all_channels();
  }
  catch (CORBA::SystemException& se )
  {
    std::cerr << "System exception occurred during get_all_channels: "
      << se << std::endl;
    exit(1);
  }

  if( channelIdSeq->length() == 0 )
  {

    try
    {
      ec = factory->create_channel( init_qos, init_admin, id);
    }
    catch (CORBA::SystemException& se )
    {
      std::cerr << "System exception occurred during find_channel: "
        << se << std::endl;
      exit(1);
    }
  }
  else {
    try
    {
      ec = factory->get_event_channel(channelIdSeq.in()[0]);
    }
    catch (CosNotifyChannelAdmin::ChannelNotFound&)
    {
      std::cerr << "ChannelNotFound: "
        << channelIdSeq.in()[0] << std::endl;
      exit(1);
    }

    catch (CORBA::SystemException& se )
    {
      std::cerr << "System exception occurred during get_event_channel: "
        << se << std::endl;
      exit(1);
    }

  }

  return ec._retn();
}