C++ Subscriber_var::create_datareader方法代码示例

DDS::DataReader_var
createDataReader(
  DDS::Subscriber_var subscriber,
  DDS::Topic_var topic,
  DDS::DataReaderListener_var listener,
  bool keep_last_one)
{
  // Set qos
  DDS::DataReaderQos dr_qos;
  // RELIABLE/KEEP_LAST/10 works
  subscriber->get_default_datareader_qos(dr_qos);
  dr_qos.reliability.kind = DDS::RELIABLE_RELIABILITY_QOS;
  if (keep_last_one) {
    dr_qos.history.kind = DDS::KEEP_LAST_HISTORY_QOS;
    dr_qos.history.depth = 1;
    std::cout << "Datareader QOS keep last one" << std::endl;
  } else {
    dr_qos.history.kind = DDS::KEEP_LAST_HISTORY_QOS;
    dr_qos.history.depth = 10;
  }
  // Create DataReader
  DDS::DataReader_var reader =
    subscriber->create_datareader(topic,
                                  dr_qos,
                                  listener,
                                  OpenDDS::DCPS::DEFAULT_STATUS_MASK);

  // Check for failure
  if (!reader) {
    throw std::string("failed to create data reader");
  }

  return reader;
}

DDS::DataReader_var
create_reader(const DDS::Subscriber_var& sub, const char* topicName,
  const DDS::DataReaderQos& qos = DATAREADER_QOS_DEFAULT,
  const DDS::DataReaderListener_var& listener = 0,
  const DDS::StatusMask& mask = OpenDDS::DCPS::DEFAULT_STATUS_MASK)
{
  const DDS::TypeSupport_var ts = new ::OpenDDS::DCPS::TypeSupportImpl_T<MessageType>();
  const DDS::DomainParticipant_var dp = sub->get_participant();
  const CORBA::String_var typeName = ts->get_type_name();
  (void) ts->register_type(dp, typeName); // may have been registered before

  const DDS::Topic_var topic =
    dp->create_topic(topicName, typeName, TOPIC_QOS_DEFAULT, 0, 0);
  if (!topic) return 0;

  const DDS::DataReader_var dr =
    sub->create_datareader(topic, qos, listener, mask);
  return OpenDDS::DCPS::DDSTraits<MessageType>::DataReaderType::_narrow(dr);
}

DDS::DataReader_var
Factory::reader(const DDS::Subscriber_var& sub, const DDS::Topic_var& topic, const DDS::DataReaderListener_var& drl) const
{
  // Create the data readers
  DDS::DataReaderQos dr_qos;
  sub->get_default_datareader_qos(dr_qos);

  dr_qos.durability.kind = opts_.durability_kind;
  dr_qos.liveliness.kind = opts_.liveliness_kind;
  dr_qos.liveliness.lease_duration = opts_.LEASE_DURATION;
  dr_qos.reliability.kind = opts_.reliability_kind;

  DDS::DomainParticipant_var dp = sub->get_participant();
  CORBA::String_var tn = topic->get_name();
  DDS::TopicDescription_var description = dp->lookup_topicdescription(tn);
  TEST_ASSERT(!CORBA::is_nil(description.in()));

  DDS::DataReader_var rd(sub->create_datareader(description.in(),
                                                dr_qos,
                                                drl.in(),
                                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK));

  // Initialize the transport configuration for the appropriate entity
  TEST_ASSERT(!opts_.configuration_str.empty());
  if (opts_.configuration_str != "none" && opts_.entity_str == "rw")
    {

      OpenDDS::DCPS::TransportRegistry::instance()->bind_config(opts_.configuration_str,
                                                                rd.in());
      if (!opts_.entity_autoenable)
        {
          TEST_ASSERT(DDS::RETCODE_OK == rd->enable());
        }
    }

  return rd;
}

int ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
  try
    {
      DDS::DomainParticipantFactory_var dpf;
      DDS::DomainParticipant_var participant;

      dpf = TheParticipantFactoryWithArgs(argc, argv);
      if( parse_args(argc, argv) != 0)
        return 1;

      participant =
        dpf->create_participant(411,
                                PARTICIPANT_QOS_DEFAULT,
                                DDS::DomainParticipantListener::_nil(),
                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (participant.in ())) {
        ACE_ERROR_RETURN ((LM_ERROR,
                           "(%P|%t) create_participant failed.\n")
                          , -1);
      }

      MessageTypeSupportImpl* mts_servant = new MessageTypeSupportImpl;

      if (DDS::RETCODE_OK != mts_servant->register_type(participant.in (),
                                                        "")) {
        ACE_ERROR_RETURN ((LM_ERROR,
                           "(%P|%t) Failed to register the MessageTypeTypeSupport.\n")
                          , -1);
      }

      CORBA::String_var type_name = mts_servant->get_type_name ();

      DDS::TopicQos topic_qos;
      participant->get_default_topic_qos(topic_qos);
      DDS::Topic_var topic =
        participant->create_topic("Movie Discussion List",
                                  type_name.in (),
                                  topic_qos,
                                  DDS::TopicListener::_nil(),
                                  ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (topic.in ())) {
        ACE_ERROR_RETURN ((LM_ERROR,
                           "(%P|%t) Failed to create_topic.\n")
                          , -1);
      }

      // Indicate that the subscriber is about to become ready
      FILE* readers_ready = ACE_OS::fopen (sub_ready_filename, ACE_TEXT("w"));
      if (readers_ready == 0) {
        ACE_ERROR_RETURN ((LM_ERROR,
                           "(%P|%t) ERROR: Unable to create subscriber ready file.\n")
                          , -1);
      }
      ACE_OS::fclose(readers_ready);

      // Check if the publisher is up and running
      ACE_stat stats;
      while (ACE_OS::stat (pub_ready_filename, &stats) == -1)
        {
          ACE_Time_Value small_time(0,250000);
          ACE_OS::sleep (small_time);
        }

      for (int count = 1; count <= sub_reinit_itr; count++)
        {
          if (verbose) {
            ACE_DEBUG ((LM_DEBUG, "(%P|%t) Reinitializing subscriber.\n"));
          }

          // Create the subscriber and attach to the corresponding
          // transport.
          DDS::Subscriber_var sub =
            participant->create_subscriber(SUBSCRIBER_QOS_DEFAULT,
                                           DDS::SubscriberListener::_nil(),
                                           ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
          if (CORBA::is_nil (sub.in ())) {
            ACE_ERROR_RETURN ((LM_ERROR,
                               "(%P|%t) Failed to create_subscriber.\n")
                              , -1);
          }

          // Create the Datareaders
          DDS::DataReaderQos dr_qos;
          sub->get_default_datareader_qos (dr_qos);
          DDS::DataReader_var dr = sub->create_datareader(topic.in (),
                                                          dr_qos,
                                                          DDS::DataReaderListener::_nil(),
                                                          ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
          if (CORBA::is_nil (dr.in ())) {
            ACE_ERROR_RETURN ((LM_ERROR,
                               "(%P|%t) create_datareader failed.\n")
                              , -1);
          }

          // This is where a speed-bump should be.
          while (true)
            {
              ::DDS::InstanceHandleSeq handles;
              dr->get_matched_publications (handles);
//.........这里部分代码省略.........

int ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
  DDS::DomainParticipantFactory_var dpf = DDS::DomainParticipantFactory::_nil();
  DDS::DomainParticipant_var participant = DDS::DomainParticipant::_nil();

  try 
  {
     QuantLibAddinCpp::initializeAddin();

     boost::gregorian::date date ( boost::gregorian::from_undelimited_string( "20111019" ) );

     long evaluationDate = QuantLib::Date( date.day(), QuantLib::Month(date.month().as_number()), date.year() ).serialNumber(); 

     QuantLibAddinCpp::qlSettingsSetEvaluationDate(evaluationDate, OH_NULL);

     std::string ticker;

     // Initialize, and create a DomainParticipant
     dpf = TheParticipantFactoryWithArgs(argc, argv);
     
     qldds_utils::BasicDomainParticipant participant( dpf, EQUITY_OPTIONS_DOMAIN_ID );
     participant.createPublisher();
     participant.createSubscriber();
     DDS::DomainParticipant_var dp = participant.getDomainParticipant();  

 
     ACE_Get_Opt cmd_opts( argc, argv, ":s:" );
  
     int option;
  
     while ( (option = cmd_opts()) != EOF )
     {
       switch( option )
       {
         case 's' :
           ticker = cmd_opts.opt_arg();
           break;
       }
     }


     // Topics
     // setting up qlBlackConstantVols Topic
     DDS::Topic_var ql_black_constant_vols_topic = participant.createTopicAndRegisterType
        < qlBlackConstantVolsTypeSupport_var, qlBlackConstantVolsTypeSupportImpl >
         ( QL_BLACK_CONSTANT_VOLS_TOPIC_NAME );

     // setting up qlGeneralizedBlackScholesProcesses Topic
     DDS::Topic_var ql_generalized_black_scholes_processes_topic = participant.createTopicAndRegisterType
        < qlGeneralizedBlackScholesProcessesTypeSupport_var, qlGeneralizedBlackScholesProcessesTypeSupportImpl >
         ( QL_GENERALIZED_BLACK_SCHOLES_PROCESSES_TOPIC_NAME );

     // setting up qlStrikedTypePayoff Topic
     DDS::Topic_var ql_striked_type_payoffs_topic = participant.createTopicAndRegisterType
       < qlStrikedTypePayoffsTypeSupport_var, qlStrikedTypePayoffsTypeSupportImpl >
         ( QL_STRIKED_TYPE_PAYOFFS_TOPIC_NAME );

     // setting up qlEuropeanExercises Topic
     DDS::Topic_var ql_european_exercises_topic = participant.createTopicAndRegisterType
        < qlEuropeanExercisesTypeSupport_var, qlEuropeanExercisesTypeSupportImpl >
         ( QL_EUROPEAN_EXERCISES_TOPIC_NAME ); 

     StraddleSetupTypeSupport_var ts_res = new StraddleSetupTypeSupportImpl;
     if ( ts_res->register_type(dp, "") != DDS::RETCODE_OK )
     {
       std::cout << "Registration of the Topic FAILED!!!!" << std::endl;
     }

     CORBA::String_var type_name = ts_res->get_type_name();
     std::cout << "Type Name : " << type_name << std::endl; 

     std::stringstream multi_topic_select;

     multi_topic_select << "SELECT ticker, putVols, callVols, putPayoffs, callPayoffs, process, exercises FROM "<<
                          QL_BLACK_CONSTANT_VOLS_TOPIC_NAME << " NATURAL JOIN " << 
                          QL_GENERALIZED_BLACK_SCHOLES_PROCESSES_TOPIC_NAME << " NATURAL JOIN " <<
                          QL_STRIKED_TYPE_PAYOFFS_TOPIC_NAME << " NATURAL JOIN " << 
                          QL_EUROPEAN_EXERCISES_TOPIC_NAME << " WHERE ticker = '" << ticker << "'";

     std::cout << multi_topic_select.str() << std::endl; 

     DDS::MultiTopic_var mt = dp->create_multitopic("MyMultiTopic", type_name, multi_topic_select.str().c_str(), DDS::StringSeq()); 

     if ( CORBA::is_nil( mt ) ) 
       std::cout << "MultiTopic Subscribtion failed.!!!!" << mt << std::endl;

     DDS::Subscriber_var sub = participant.getSubscriber();
     std::cout << "Creating Data Reader"<< std::endl;
     DDS::DataReader_var dr = sub->create_datareader(mt, DATAREADER_QOS_DEFAULT, 0, ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
     std::cout << "Done..."<< std::endl;

     DDS::WaitSet_var ws = new DDS::WaitSet;
     DDS::ReadCondition_var rc = dr->create_readcondition( DDS::ANY_SAMPLE_STATE, DDS::ANY_VIEW_STATE, DDS::ANY_INSTANCE_STATE);
     ws->attach_condition(rc);
     DDS::Duration_t infinite = { DDS::DURATION_INFINITE_SEC, DDS::DURATION_INFINITE_NSEC};
     DDS::ConditionSeq active;
     int ret = ws->wait(active, infinite);
     if (ret != DDS::RETCODE_OK) return false;
     ws->detach_condition(rc);

//.........这里部分代码省略.........

int
ACE_TMAIN(int argc, ACE_TCHAR *argv[])
{
  try {
    // Initialize DomainParticipantFactory
    DDS::DomainParticipantFactory_var dpf =
      TheParticipantFactoryWithArgs(argc, argv);

    int error;
    if ((error = parse_args(argc, argv)) != 0) {
      return error;
    }

    // Create DomainParticipant
    DDS::DomainParticipant_var participant =
      dpf->create_participant(411,
                              PARTICIPANT_QOS_DEFAULT,
                              DDS::DomainParticipantListener::_nil(),
                              OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (CORBA::is_nil(participant.in())) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("%N:%l main()")
                        ACE_TEXT(" ERROR: create_participant() failed!\n")), -1);
    }

    // Register Type (Messenger::Message)
    Messenger::MessageTypeSupport_var ts =
      new Messenger::MessageTypeSupportImpl();

    if (ts->register_type(participant.in(), "") != DDS::RETCODE_OK) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("%N:%l main()")
                        ACE_TEXT(" ERROR: register_type() failed!\n")), -1);
    }

    // Create Topic (Movie Discussion List)
    DDS::Topic_var topic =
      participant->create_topic("Movie Discussion List",
                                ts->get_type_name(),
                                TOPIC_QOS_DEFAULT,
                                DDS::TopicListener::_nil(),
                                OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (CORBA::is_nil(topic.in())) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("%N:%l main()")
                        ACE_TEXT(" ERROR: create_topic() failed!\n")), -1);
    }

    ::DDS::SubscriberQos subscriber_qos;
    participant->get_default_subscriber_qos (subscriber_qos);
    subscriber_qos.presentation.access_scope
      = (::DDS::PresentationQosPolicyAccessScopeKind)acess_scope;
    subscriber_qos.presentation.coherent_access = true;
    subscriber_qos.presentation.ordered_access = true;

    SubscriberListenerImpl* subscriber_listener_svt = new SubscriberListenerImpl();
    DDS::SubscriberListener_var subscriber_listener(subscriber_listener_svt);

    // Create Subscriber
    DDS::Subscriber_var sub =
      participant->create_subscriber(subscriber_qos,
                                     subscriber_listener.in(),
                                     OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (CORBA::is_nil(sub.in())) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("%N:%l main()")
                        ACE_TEXT(" ERROR: create_subscriber() failed!\n")), -1);
    }

    // Initialize Transport
    OpenDDS::DCPS::TransportImpl_rch transport_impl =
      TheTransportFactory->create_transport_impl(transport_impl_id,
                                                 OpenDDS::DCPS::AUTO_CONFIG);

    OpenDDS::DCPS::AttachStatus status = transport_impl->attach(sub.in());

    if (status != OpenDDS::DCPS::ATTACH_OK) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("%N:%l main()")
                        ACE_TEXT(" ERROR: attach() failed!\n")), -1);
    }

    // Create DataReader
    DataReaderListenerImpl* listener_svt1 = new DataReaderListenerImpl("DataReader1");
    DataReaderListenerImpl* listener_svt2 = new DataReaderListenerImpl("DataReader2");

    DDS::DataReaderListener_var listener1(listener_svt1);
    DDS::DataReaderListener_var listener2(listener_svt2);

    ::DDS::DataReaderQos readerQos;
    sub->get_default_datareader_qos( readerQos);

    readerQos.history.kind                             = ::DDS::KEEP_ALL_HISTORY_QOS;
    readerQos.resource_limits.max_samples_per_instance = ::DDS::LENGTH_UNLIMITED;

    DDS::DataReader_var reader1 =
      sub->create_datareader(topic.in(),
//.........这里部分代码省略.........

//.........这里部分代码省略.........
      }

      // Create Subscriber
      DDS::Subscriber_var sub =
        (*part)->create_subscriber(SUBSCRIBER_QOS_DEFAULT,
                                   DDS::SubscriberListener::_nil(),
                                   OpenDDS::DCPS::DEFAULT_STATUS_MASK);

      if (CORBA::is_nil(sub.in())) {
        ACE_ERROR_RETURN((LM_ERROR,
                          ACE_TEXT("%N:%l main()")
                          ACE_TEXT(" ERROR: create_subscriber() failed!\n")), -1);
      }

      DDS::DataReaderQos qos;
      sub->get_default_datareader_qos(qos);
      qos.liveliness.kind = DDS::AUTOMATIC_LIVELINESS_QOS;
      qos.liveliness.lease_duration.sec = 10;
      qos.liveliness.lease_duration.nanosec = 0;
      qos.history.kind = DDS::KEEP_ALL_HISTORY_QOS;

      if (options.reliable) {
        qos.reliability.kind = DDS::RELIABLE_RELIABILITY_QOS;
      }

      for (unsigned int reader = 0; reader < options.num_readers; ++reader) {
        ACE_DEBUG((LM_DEBUG, ACE_TEXT("%T (%P|%t) Creating reader\n")));

        // Create DataReader
        listener_servants.push_back(new DataReaderListenerImpl(options, pid, part_index, reader));
        listeners.push_back(DDS::DataReaderListener_var(listener_servants.back()));

        DDS::DataReader_var data_reader =
          sub->create_datareader(topic.in(),
                                 qos,
                                 listeners.back().in(),
                                 OpenDDS::DCPS::DEFAULT_STATUS_MASK);

        if (CORBA::is_nil(data_reader.in())) {
          ACE_ERROR_RETURN((LM_ERROR,
                            ACE_TEXT("%N:%l main()")
                            ACE_TEXT(" ERROR: create_datareader() failed!\n")), -1);
        }
      }
    }

    const unsigned int sleep_delay_msec = 500;
    unsigned int delay = 0;
    while (delay < options.total_duration_msec) {
      bool complete = true;
      for (ListenerServants::const_iterator listener = listener_servants.begin();
           listener != listener_servants.end();
           ++listener) {
        if (!(*listener)->done()) {
          complete = false;
        }
      }

      if (complete)
        break;

      delay += sleep_delay_msec;
      ACE_OS::sleep(ACE_Time_Value(0, sleep_delay_msec * 1000));
    }
    ACE_DEBUG((LM_DEBUG, ACE_TEXT("%T (%P|%t) Listeners done (ran for %d msec)\n"), delay));

int
ACE_TMAIN(int argc, ACE_TCHAR *argv[])
{
  try {
    // Initialize DomainParticipantFactory
    DDS::DomainParticipantFactory_var dpf =
      TheParticipantFactoryWithArgs(argc, argv);

    // Create DomainParticipant
    DDS::DomainParticipant_var participant =
      dpf->create_participant(42,
                              PARTICIPANT_QOS_DEFAULT,
                              0,
                              OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!participant) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" create_participant failed!\n")), -1);
    }

    // Register Type (Messenger::Message)
    Messenger::MessageTypeSupport_var ts =
      new Messenger::MessageTypeSupportImpl;

    if (ts->register_type(participant, "") != DDS::RETCODE_OK) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" register_type failed!\n")), -1);
    }

    // Create Topic (Movie Discussion List)
    CORBA::String_var type_name = ts->get_type_name();
    DDS::Topic_var topic =
      participant->create_topic("Movie Discussion List",
                                type_name,
                                TOPIC_QOS_DEFAULT,
                                0,
                                OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!topic) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" create_topic failed!\n")), -1);
    }

    // Create Subscriber
    DDS::Subscriber_var subscriber =
      participant->create_subscriber(SUBSCRIBER_QOS_DEFAULT,
                                     0,
                                     OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!subscriber) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" create_subscriber failed!\n")), -1);
    }

    // Create DataReader
    DDS::DataReaderListener_var listener(new DataReaderListenerImpl);

    DDS::DataReader_var reader =
      subscriber->create_datareader(topic,
                             DATAREADER_QOS_DEFAULT,
                             listener,
                             OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!reader) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" create_datareader failed!\n")), -1);
    }

    Messenger::MessageDataReader_var reader_i =
      Messenger::MessageDataReader::_narrow(reader);

    if (!reader_i) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" _narrow failed!\n")),
                       -1);
    }

    // Block until Publisher completes
    DDS::StatusCondition_var condition = reader->get_statuscondition();
    condition->set_enabled_statuses(DDS::SUBSCRIPTION_MATCHED_STATUS);

    DDS::WaitSet_var ws = new DDS::WaitSet;
    ws->attach_condition(condition);

    while (true) {
      DDS::SubscriptionMatchedStatus matches;
      if (reader->get_subscription_matched_status(matches) != DDS::RETCODE_OK) {
        ACE_ERROR_RETURN((LM_ERROR,
                          ACE_TEXT("ERROR: %N:%l: main() -")
                          ACE_TEXT(" get_subscription_matched_status failed!\n")), -1);
      }

      if (matches.current_count == 0 && matches.total_count > 0) {
        break;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
  /**
     Publisher code
  **/
  if(mode == PUBLISHER){
      DDS::PublisherQos publisher_qos;
      retval = participant->get_default_publisher_qos(publisher_qos);
      assert( DDS::RETCODE_OK == retval );
      DDS::Publisher_var publisher = participant->create_publisher(publisher_qos,
                                                                   NULL,
                                                                   DDS::STATUS_MASK_NONE);
      assert( NULL != publisher.in() );

      /**
        PID Data Writer
      **/
      DDS::DataWriterQos dw_qos;
      retval = publisher->get_default_datawriter_qos(dw_qos);
      assert( DDS::RETCODE_OK == retval );
      const char* msg = "HI THERE COWBOY";
      dw_qos.user_data.value = DDS_DCPSUFLSeq<unsigned char, DDS::octSeq_uniq_>(msg);
      assert( strlen(msg) == dw_qos.user_data.value.length() );
      
      DDS::DataWriter_var writer = publisher->create_datawriter(presence_topic, dw_qos, NULL, DDS::STATUS_MASK_NONE); 
      assert( NULL != writer.in() );
      PID::PresenceDataWriter_var presence_writer = PID::PresenceDataWriter::_narrow(writer);
      assert( NULL != presence_writer.in() );

      PID::Presence temp_presence;
      temp_presence.pid = 100;
      temp_presence.hostname = "my_machine";
      //handle = presence_writer->register_instance(temp_presence);
      //assert( DDS::HANDLE_NIL != handle );
      handle = DDS::HANDLE_NIL;

      // std::cout << "LOOPING" << std::endl;
      // while(shutdown_flag == 0){
        retval = presence_writer->write(temp_presence,handle);
        assert( DDS::RETCODE_OK == retval );
      //  usleep(50);
      //}
  }
  /**
    Subscriber
  **/
  else if(mode == SUBSCRIBER){
      DDS::SubscriberQos subscriber_qos;
      retval = participant->get_default_subscriber_qos(subscriber_qos);
      assert( DDS::RETCODE_OK == retval );
      DDS::Subscriber_var subscriber = participant->create_subscriber(subscriber_qos,
                                                                      NULL,
                                                                      DDS::STATUS_MASK_NONE);
      assert( NULL != subscriber.in() );

      /**
        PID Data Reader
      **/
      DDS::DataReaderQos dr_qos;
      retval = subscriber->get_default_datareader_qos(dr_qos);
      assert( DDS::RETCODE_OK == retval );
      PID::PresenceReaderListener *p_r_listener = new PID::PresenceReaderListener();
      assert(p_r_listener != NULL);
      DDS::DataReader_ptr reader = subscriber->create_datareader(presence_topic, dr_qos, p_r_listener, DDS::DATA_AVAILABLE_STATUS);
      assert( NULL != reader );
      PID::PresenceDataReader *presence_reader = PID::PresenceDataReader::_narrow(reader);
      assert( NULL != presence_reader );

      while(shutdown_flag == 0){
        usleep(50);
      }
  }

  //retval = dpf->delete_participant(participant);
  //assert( DDS::RETCODE_OK == retval );
  retval = DDS::RETCODE_PRECONDITION_NOT_MET;
  while(retval != DDS::RETCODE_OK){
      retval = dpf->delete_contained_entities();
      /*
      switch(retval){
        case DDS::RETCODE_OK:
            printf("DDS::RETCODE_OK\n");
            break;
        case DDS::RETCODE_ERROR:
            printf("DDS::RETCODE_ERROR\n");
            break;
        case DDS::RETCODE_OUT_OF_RESOURCES:
            printf("DDS::RETCODE_OUT_OF_RESOURCES\n");
            break;
        case DDS::RETCODE_PRECONDITION_NOT_MET:
            printf("DDS::RETCODE_PRECONDITION_NOT_MET\n");
            break;
        default:
            printf("Default case?\n");
      }
      */
      usleep(10);
  }
  assert( DDS::RETCODE_OK == retval );

  return 0;
}

int ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
  int return_result = 0;
  try
    {
      DDS::DomainParticipantFactory_var dpf;
      DDS::DomainParticipant_var participant;

      dpf = TheParticipantFactoryWithArgs(argc, argv);
      participant =
        dpf->create_participant(11,
                                PARTICIPANT_QOS_DEFAULT,
                                DDS::DomainParticipantListener::_nil(),
                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (participant.in ())) {
        cerr << "create_participant failed." << endl;
        return 1 ;
      }

      Messenger::MessageTypeSupportImpl* mts_servant =
        new Messenger::MessageTypeSupportImpl;

      if (DDS::RETCODE_OK != mts_servant->register_type(participant.in (),
                                                        ""))
      {
        cerr << "Failed to register the MessageTypeTypeSupport." << endl;
        exit(1);
      }

      CORBA::String_var type_name = mts_servant->get_type_name ();

      DDS::TopicQos topic_qos;
      participant->get_default_topic_qos(topic_qos);
      DDS::Topic_var topic =
        participant->create_topic("Movie Discussion List",
                                  type_name.in (),
                                  topic_qos,
                                  DDS::TopicListener::_nil(),
                                  ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (topic.in ())) {
        cerr << "Failed to create_topic." << endl;
        exit(1);
      }

      // Create the subscriber and attach to the corresponding
      // transport.
      DDS::Subscriber_var sub =
        participant->create_subscriber (SUBSCRIBER_QOS_DEFAULT,
                                        DDS::SubscriberListener::_nil(),
                                        ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (sub.in ())) {
        cerr << "Failed to create_subscriber." << endl;
        exit(1);
      }

      // Create the listener.
      DDS::DataReaderListener_var listener (new DataReaderListenerImpl);
      DataReaderListenerImpl* listener_servant =
        dynamic_cast<DataReaderListenerImpl*>(listener.in());

      if (CORBA::is_nil (listener.in ()))
      {
        cerr << "ERROR: listener is nil." << endl;
        exit(1);
      }

      DDS::DataReaderQos dr_qos; // Good QoS.
      sub->get_default_datareader_qos (dr_qos);

      dr_qos.resource_limits.max_samples_per_instance = MAX_SAMPLES_PER_INSTANCES;
      dr_qos.resource_limits.max_samples = MAX_SAMPLES;
      dr_qos.resource_limits.max_instances = MAX_INSTANCES;
#ifndef OPENDDS_NO_OWNERSHIP_PROFILE
      dr_qos.history.kind = ::DDS::KEEP_ALL_HISTORY_QOS;
      dr_qos.history.depth = MAX_SAMPLES_PER_INSTANCES;
#endif

      DDS::DataReader_var dr1 =
        sub->create_datareader (topic.in (),
                                dr_qos,
                                listener.in (),
                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);

      if (CORBA::is_nil (dr1.in ()) )
      {
        cerr << "ERROR: create_datareader failed." << endl;
        exit(1);
      }

      DDS::DataReader_var dr2 =
        sub->create_datareader (topic.in (),
                                dr_qos,
                                DDS::DataReaderListener::_nil (),
                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);

      if (CORBA::is_nil (dr2.in ()) )
      {
        cerr << "ERROR: create_datareader failed." << endl;
        exit(1);
      }
//.........这里部分代码省略.........

int do_reader(DDS::DomainParticipant_var participant, DDS::Topic_var topic, bool toggle)
{
  // Create Subscriber
  DDS::Subscriber_var subscriber =
    participant->create_subscriber(SUBSCRIBER_QOS_DEFAULT,
                                   0,
                                   OpenDDS::DCPS::DEFAULT_STATUS_MASK);

  if (!subscriber) {
    ACE_ERROR_RETURN((LM_ERROR,
                      ACE_TEXT("ERROR: %N:%l: do_reader() -")
                      ACE_TEXT(" create_subscriber failed!\n")), -1);
  }

  DDS::DataReaderQos qos;
  subscriber->get_default_datareader_qos(qos);
  qos.user_data.value.length(3);
  qos.user_data.value[0] = 0;
  qos.user_data.value[1] = 0;
  qos.user_data.value[2] = 0;
  qos.reliability.kind = DDS::RELIABLE_RELIABILITY_QOS;

  if (toggle) {
    ACE_DEBUG((LM_DEBUG, "Creating reader\n"));
    DDS::DataReader_var reader =
      subscriber->create_datareader(topic,
                                    qos,
                                    0,
                                    OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!reader) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: do_reader() -")
                        ACE_TEXT(" create_datareader failed!\n")), -1);
    }

    ACE_OS::sleep(SLEEP_SHORT);
    // Go away.
    ACE_DEBUG((LM_DEBUG, "Deleting reader\n"));
    subscriber->delete_datareader(reader);
    ACE_OS::sleep(SLEEP_SHORT);
    // Come back.
    ACE_DEBUG((LM_DEBUG, "Creating reader\n"));
    reader = subscriber->create_datareader(topic,
                                           qos,
                                           0,
                                           OpenDDS::DCPS::DEFAULT_STATUS_MASK);
    ACE_OS::sleep(SLEEP_SHORT);
    return 0;
  } else {
    struct Listener : public DDS::DataReaderListener {
      size_t found, lost;

      Listener() : found(0), lost(0) { }

      virtual void
      on_requested_deadline_missed (::DDS::DataReader_ptr,
                                    const ::DDS::RequestedDeadlineMissedStatus &) { }

      virtual void
      on_requested_incompatible_qos (::DDS::DataReader_ptr,
                                     const ::DDS::RequestedIncompatibleQosStatus &) { }

      virtual void
      on_sample_rejected (::DDS::DataReader_ptr,
                          const ::DDS::SampleRejectedStatus &) { }

      virtual void
      on_liveliness_changed (::DDS::DataReader_ptr,
                             const ::DDS::LivelinessChangedStatus &) { }

      virtual void
      on_data_available (::DDS::DataReader_ptr) { }

      virtual void
      on_subscription_matched (::DDS::DataReader_ptr,
                               const ::DDS::SubscriptionMatchedStatus & status) {
        if (status.current_count_change > 0) {
          ACE_DEBUG((LM_DEBUG, "Reader found writer\n"));
          ++found;
        }
        if (status.current_count_change < 0) {
          ACE_DEBUG((LM_DEBUG, "Reader lost writer\n"));
          ++lost;
        }
      }

      virtual void
      on_sample_lost (::DDS::DataReader_ptr,
                      const ::DDS::SampleLostStatus &) { }
    } listener;

    // Create DataReader
    DDS::DataReader_var reader =
      subscriber->create_datareader(topic,
                                    qos,
                                    &listener,
                                    OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!reader) {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                                    ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);

        DDS::TopicDescription_ptr topic_used = topic.in();
        DDS::ContentFilteredTopic_ptr cft = 0;

        if (use_cft)
          {
            // Topic name must be unique.
            ACE_CString topic_name = "FooTopic-Filtered-" + toStr(i);
            cft =
              participant->create_contentfilteredtopic(topic_name.c_str(),
                                                       topic,
                                                       "key > 0",
                                                       DDS::StringSeq());
            if (CORBA::is_nil(cft))
              ACE_ERROR_RETURN((LM_ERROR,
                                ACE_TEXT("%N:%l: main()")
                                ACE_TEXT(" create_contentfilteredtopic failed!\n")), 8);

            topic_used = cft;
          }

        if (CORBA::is_nil(topic.in()))
          ACE_ERROR_RETURN((LM_ERROR,
                            ACE_TEXT("%N:%l: main()")
                            ACE_TEXT(" create_topic failed!\n")), 6);

        // Create DataReader

        DDS::DataReaderQos reader_qos;
        subscriber->get_default_datareader_qos(reader_qos);

        reader_qos.history.kind = DDS::KEEP_ALL_HISTORY_QOS;
        if (deadline_used)
          {
            reader_qos.deadline.period.sec     = DEADLINE_PERIOD.sec;
            reader_qos.deadline.period.nanosec = DEADLINE_PERIOD.nanosec;
          }

        DDS::DataReader_var reader =
          subscriber->create_datareader(topic_used,
                                        reader_qos,
                                        DDS::DataReaderListener::_nil(),
                                        ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);

        if (CORBA::is_nil(reader.in()))
          ACE_ERROR_RETURN((LM_ERROR,
                            ACE_TEXT("%N:%l: main()")
                            ACE_TEXT(" create_datareader failed!\n")), 7);


        ACE_Time_Value sample_count_sleep(0, sample_count_sleep_msec * 1000);
        std::size_t sample_count;
        std::size_t sample_count_start = subscriberListener->samples_processed();
        do
          {
            ACE_OS::sleep(sample_count_sleep);
            sample_count =
              subscriberListener->samples_processed();
            expected_samples_received = sample_count >= expected_samples;
            // ACE_DEBUG((LM_DEBUG, "(%P|%t) sample_count = %d\n", sample_count));
          }
        while (!expected_samples_received &&
               (sample_count - sample_count_start) < samples_per_cycle);

        subscriber->delete_datareader(reader.in());

        if (use_cft)
          CORBA::release(cft);

        participant->delete_subscriber(subscriber.in());

        ACE_OS::sleep(delay_between_cycles);
      }
    while (!expected_samples_received);

    participant->delete_contained_entities();
    dpf->delete_participant(participant.in());

    TheServiceParticipant->shutdown();

    ACE_DEBUG ((LM_INFO,
                ACE_TEXT("INFO: %d samples received\n"),
                subscriberListener->received_samples()));
    if (deadline_used)
      ACE_DEBUG ((LM_INFO,
                  ACE_TEXT("INFO: deadline missed %d times\n"),
                  subscriberListener->missed_samples()));

  }
  catch (const CORBA::Exception& e)
  {
    e._tao_print_exception("caught in main()");
    return 9;
  }

  ACE_DEBUG((LM_INFO, ACE_TEXT("(%P|%t) <- SUBSCRIBER FINISHED\n")));

  return 0;
}

//.........这里部分代码省略.........
      OpenDDS::DCPS::AttachStatus status = sub_impl->attach_transport(transport_impl.in());
      if (status != OpenDDS::DCPS::ATTACH_OK) {
        std::string status_str;
        switch (status) {
        case OpenDDS::DCPS::ATTACH_BAD_TRANSPORT:
          status_str = "ATTACH_BAD_TRANSPORT";
          break;
        case OpenDDS::DCPS::ATTACH_ERROR:
          status_str = "ATTACH_ERROR";
          break;
        case OpenDDS::DCPS::ATTACH_INCOMPATIBLE_QOS:
          status_str = "ATTACH_INCOMPATIBLE_QOS";
          break;
        default:
          status_str = "Unknown Status";
          break;
        }
        cerr << "Failed to attach to the transport. Status == "
          << status_str.c_str() << endl;
        exit(1);
      }

      // activate the listener
      DDS::DataReaderListener_var listener = new DataReaderListenerImpl;
      DataReaderListenerImpl &listener_servant =
        *dynamic_cast<DataReaderListenerImpl*>(listener.in());

      if (CORBA::is_nil (listener.in ())) {
        cerr << "listener is nil." << endl;
        exit(1);
      }

      // Create the Datareaders
      DDS::DataReader_var dr = sub->create_datareader(topic.in (),
                                                      DATAREADER_QOS_DEFAULT,
                                                      listener.in (),
                                                      ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (dr.in ())) {
        cerr << "create_datareader failed." << endl;
        exit(1);
      }

      if (dr->enable () != ::DDS::RETCODE_PRECONDITION_NOT_MET)
      {
        cerr << "DataReader can not be enabled because Subscriber is not enabled." << endl;
        return 1;
      }

      // Now enable DomainParticipantFactory autoenable
      fqos.entity_factory.autoenable_created_entities = 1;
      if (dpf->set_qos (fqos) != ::DDS::RETCODE_OK)
      {
        cerr << "DomainParticipantFactory set_qos failed." << endl;
        return 1;
      }

      // Enable every entity from factory to it's entities and it should succeed.
      if (participant->enable () != ::DDS::RETCODE_OK
        || topic->enable () != ::DDS::RETCODE_OK
        || sub->enable () != ::DDS::RETCODE_OK)
      {
        cerr << "Failed to enable factory." << endl;
        return 1;
      }

      // The datareader is not enabled so it will not able to

int
ACE_TMAIN(int argc, ACE_TCHAR* argv[])
{
  try {
    DDS::DomainParticipantFactory_var dpf;
    DDS::DomainParticipant_var participant;

    dpf = TheParticipantFactoryWithArgs(argc, argv);
    participant =
      dpf->create_participant(411,
                              PARTICIPANT_QOS_DEFAULT,
                              DDS::DomainParticipantListener::_nil(),
                              ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
    if (CORBA::is_nil (participant.in ())) {
      cerr << "create_participant failed." << endl;
      return 1 ;
    }

    MessageTypeSupportImpl* mts_servant = new MessageTypeSupportImpl;

    if (DDS::RETCODE_OK != mts_servant->register_type(participant.in (),
                                                      "")) {
      cerr << "Failed to register the MessageTypeTypeSupport." << endl;
      exit(1);
    }

    CORBA::String_var type_name = mts_servant->get_type_name ();

    DDS::TopicQos topic_qos;
    participant->get_default_topic_qos(topic_qos);
    DDS::Topic_var topic =
      participant->create_topic("Movie Discussion List",
                                type_name.in (),
                                topic_qos,
                                DDS::TopicListener::_nil(),
                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
    if (CORBA::is_nil (topic.in ())) {
      cerr << "Failed to create_topic." << endl;
      exit(1);
    }

    // Create the subscriber and attach to the corresponding
    // transport.
    DDS::Subscriber_var sub =
      participant->create_subscriber(SUBSCRIBER_QOS_DEFAULT,
                                     DDS::SubscriberListener::_nil(),
                                     ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
    if (CORBA::is_nil (sub.in ())) {
      cerr << "Failed to create_subscriber." << endl;
      exit(1);
    }

    // activate the listener
    DDS::DataReaderListener_var listener (new DataReaderListenerImpl);
    if (CORBA::is_nil (listener.in ())) {
      cerr << "listener is nil." << endl;
      exit(1);
    }
    DataReaderListenerImpl* listener_servant =
      dynamic_cast<DataReaderListenerImpl*>(listener.in());

    // Create the Datareaders
    DDS::DataReaderQos dr_qos;
    sub->get_default_datareader_qos (dr_qos);
    DDS::DataReader_var dr
      = sub->create_datareader(topic.in (),
                               dr_qos,
                               listener.in (),
                               ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
    if (CORBA::is_nil (dr.in ())) {
      cerr << "create_datareader failed." << endl;
      exit(1);
    }


    while ( ! listener_servant->received_all ()) {
      ACE_OS::sleep (1);
    }

    if (! listener_servant->passed ()) {
      cerr << "test failed - see errors." << endl;
      return 1;
    }

    if (!CORBA::is_nil (participant.in ())) {
      participant->delete_contained_entities();
    }
    if (!CORBA::is_nil (dpf.in ())) {
      dpf->delete_participant(participant.in ());
    }

    ::DDS::InstanceHandleSeq handles;
    while (1)
    {
      ACE_OS::sleep(1);
      dr->get_matched_publications(handles);
      if (handles.length() == 0)
        break;
    }

//.........这里部分代码省略.........

//.........这里部分代码省略.........
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" register_type failed!\n")),
                       -1);
    }

    // Create Topic
    CORBA::String_var type_name = ts->get_type_name();
    DDS::Topic_var topic =
      participant->create_topic("TheTopic",
                                type_name,
                                TOPIC_QOS_DEFAULT,
                                0,
                                OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!topic) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" create_topic failed!\n")),
                       -1);
    }

    // Create Subscriber
    DDS::Subscriber_var subscriber =
      participant->create_subscriber(SUBSCRIBER_QOS_DEFAULT,
                                     0,
                                     OpenDDS::DCPS::DEFAULT_STATUS_MASK);

    if (!subscriber) {
      ACE_ERROR_RETURN((LM_ERROR,
                        ACE_TEXT("ERROR: %N:%l: main() -")
                        ACE_TEXT(" create_subscriber failed!\n")), -1);
    }

    const int n_msgs = reliable ? MSGS_PER_WRITER * total_writers : 0;

    // Create DataReaders
    for (std::vector<std::string>::iterator pos = readers.begin(), limit = readers.end();
         pos != limit;
         ++pos) {
      pos->resize(6);
      DDS::DataReaderListener_var listener(new DataReaderListenerImpl(*pos, n_msgs, reader_done_callback));

      DDS::DataReaderQos qos;
      subscriber->get_default_datareader_qos(qos);
      qos.user_data.value.length(3);
      qos.user_data.value[0] = fromhex(*pos, 0);
      qos.user_data.value[1] = fromhex(*pos, 1);
      qos.user_data.value[2] = fromhex(*pos, 2);
      qos.reliability.kind = reliable ? DDS::RELIABLE_RELIABILITY_QOS : DDS::BEST_EFFORT_RELIABILITY_QOS;

      DDS::DataReader_var reader =
        subscriber->create_datareader(topic,
                                      qos,
                                      listener,
                                      OpenDDS::DCPS::DEFAULT_STATUS_MASK);

      if (!reader) {
        ACE_ERROR_RETURN((LM_ERROR,
                          ACE_TEXT("ERROR: %N:%l: main() -")
                          ACE_TEXT(" create_datareader failed!\n")), -1);
      }

      TestMsgDataReader_var reader_i =
        TestMsgDataReader::_narrow(reader);

      if (!reader_i) {
        ACE_ERROR_RETURN((LM_ERROR,
                          ACE_TEXT("ERROR: %N:%l: main() -")
                          ACE_TEXT(" _narrow failed!\n")),
                         -1);
      }
    }

    WriterTask task(writers, participant, topic, reliable, total_readers);
    task.activate(DEFAULT_FLAGS, writers.size());
    task.wait();

    if (!reliable)
      ACE_OS::sleep(10);
    else {
      ACE_Guard<ACE_Thread_Mutex> g(readers_done_lock);
      while (readers_done != static_cast<int>(readers.size()))
        readers_done_cond.wait();
      // Sleep allows an ACKNACK to be generated.
      ACE_OS::sleep(3);
    }

    // Clean-up!
    participant->delete_contained_entities();
    dpf->delete_participant(participant);

    TheServiceParticipant->shutdown();

  } catch (const CORBA::Exception& e) {
    e._tao_print_exception("Exception caught in main():");
    return -1;
  }

  return 0;
}