C++ DataWriter_var::set_qos方法代码示例

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

      DDS::DomainParticipant_var participant =
        dpf->create_participant(11,
                                PARTICIPANT_QOS_DEFAULT,
                                DDS::DomainParticipantListener::_nil(),
                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (participant.in ())) {
        ACE_DEBUG((LM_DEBUG, "create_participant failed.\n"));
        return 1;
      }

      MessageTypeSupportImpl* servant = new MessageTypeSupportImpl();

      if (DDS::RETCODE_OK != servant->register_type(participant.in (), "")) {
        ACE_DEBUG((LM_DEBUG, "register_type failed.\n"));
        exit(1);
      }

      CORBA::String_var type_name = 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_DEBUG((LM_DEBUG, "create_topic failed.\n"));
        exit(1);
      }

      DDS::Publisher_var pub =
        participant->create_publisher(PUBLISHER_QOS_DEFAULT,
        DDS::PublisherListener::_nil(),
        ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (pub.in ())) {
        ACE_DEBUG((LM_DEBUG, "create_publisher failed.\n"));
        exit(1);
      }

      DDS::DataWriterQos dw_qos;
      pub->get_default_datawriter_qos (dw_qos);

      dw_qos.deadline.period.sec     = 4;
      dw_qos.deadline.period.nanosec = 0;

      // Create DataWriter with 4 second deadline period which
      // should be compatible with first DataReader which has 5
      // seconds deadline period and not with second DataReader
      // which has 3 seconds deadline period.
      DDS::DataWriter_var dw =
        pub->create_datawriter(topic, dw_qos, 0,
                               OpenDDS::DCPS::DEFAULT_STATUS_MASK);

      int const max_attempts = 20000;
      int attempts = 1;
      {
        // Wait for both first DataReader connect and write messages.
        std::auto_ptr<Writer> writer (new Writer (dw.in ()));

        while (attempts != max_attempts)
        {
          ::DDS::InstanceHandleSeq handles;
          dw->get_matched_subscriptions(handles);
          if (handles.length() == 1)
            break;
          else
            ACE_OS::sleep(1);
          ++attempts;
        }

        if (attempts == max_attempts)
        {
          ACE_DEBUG((LM_DEBUG, "ERROR: subscriptions failed to match.\n"));
          exit (1);
        }

        writer->start ();
        writer->end ();

        ACE_DEBUG((LM_DEBUG, "Writer changing deadline to incompatible value\n"));

        // Now set DataWriter deadline to be 6 seconds which is not
        // compatible with the existing DataReader. This QoS change
        // should be applied and the association broken.
        dw_qos.deadline.period.sec = 6;

        if (dw->set_qos (dw_qos) != ::DDS::RETCODE_OK) {
          ACE_DEBUG((LM_DEBUG,
            "ERROR: DataWriter could not change deadline period which "
             "should break DataReader associations\n"));
          exit (1);
        } else {
//.........这里部分代码省略.........

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

      MessageTypeSupportImpl* servant = new MessageTypeSupportImpl();

      if (DDS::RETCODE_OK != servant->register_type(participant.in (), "")) {
        cerr << "register_type failed." << endl;
        exit(1);
      }

      CORBA::String_var type_name = 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 << "create_topic failed." << endl;
        exit(1);
      }

      DDS::Publisher_var pub =
        participant->create_publisher(PUBLISHER_QOS_DEFAULT,
        DDS::PublisherListener::_nil(), ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (pub.in ())) {
        cerr << "create_publisher failed." << endl;
        exit(1);
      }

      // ----------------------------------------------

      // Create the listener.
      DDS::DataWriterListener_var listener (new DataWriterListenerImpl);
      if (CORBA::is_nil (listener.in ()))
      {
        cerr << "ERROR: listener is nil." << endl;
        exit(1);
      }


      DDS::DataWriterQos dw_qos; // Good QoS.
      pub->get_default_datawriter_qos (dw_qos);

      assert (DEADLINE_PERIOD.sec > 1); // Requirement for the test.

      // First data writer will have a listener to test listener
      // callback on deadline expiration.
      DDS::DataWriter_var dw =
        pub->create_datawriter (topic.in (),
                                dw_qos,
                                listener.in (),
                                ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);

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

      dw_qos.deadline.period.sec     = DEADLINE_PERIOD.sec;
      dw_qos.deadline.period.nanosec = DEADLINE_PERIOD.nanosec;

      // Set qos with deadline. The watch dog starts now.
      if (dw->set_qos (dw_qos) != ::DDS::RETCODE_OK)
      {
        cerr << "ERROR: set deadline qos failed." << endl;
        exit(1);
      }

      {
        // Two threads use same datawriter to write different instances.
        std::auto_ptr<Writer> writer1 (new Writer (dw.in (), 99, SLEEP_DURATION));
        std::auto_ptr<Writer> writer2 (new Writer (dw.in (), 100, SLEEP_DURATION));

        writer1->start ();
        writer2->start ();
        // ----------------------------------------------

        // Wait for fully associate with DataReaders.
        if (writer1->wait_for_start () == false || writer2->wait_for_start () == false)
        {
          cerr << "ERROR: took too long to associate. " << endl;
          exit (1);
        }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (pub.in ())) {
        cerr << "publisher: create_publisher failed." << endl;
        exit(1);
      }

      // Create the datawriter
      DDS::DataWriterQos dw_qos;
      pub->get_default_datawriter_qos (dw_qos);
      dw_qos.durability.kind = DDS::TRANSIENT_LOCAL_DURABILITY_QOS;
      dw_qos.reliability.kind  = ::DDS::RELIABLE_RELIABILITY_QOS;
      dw_qos.resource_limits.max_samples_per_instance = 1000;
      dw_qos.history.kind  = ::DDS::KEEP_ALL_HISTORY_QOS;

      // set up user data in DW qos
      CORBA::ULong dw_user_data_len = static_cast<CORBA::ULong>(ACE_OS::strlen (DW_USER_DATA));
      dw_qos.user_data.value.length (dw_user_data_len);
      dw_qos.user_data.value.replace (dw_user_data_len,
                                      dw_user_data_len,
                                      reinterpret_cast<CORBA::Octet*>(DW_USER_DATA));

      DDS::DataWriter_var dw =
        pub->create_datawriter(topic.in (),
                               dw_qos,
                               DDS::DataWriterListener::_nil(),
                               ::OpenDDS::DCPS::DEFAULT_STATUS_MASK);
      if (CORBA::is_nil (dw.in ())) {
        cerr << "publisher: create_datawriter failed." << endl;
        exit(1);
      }

      // wait for Monitor 1 done
      FILE* fp = ACE_OS::fopen (synch_fname, ACE_TEXT("r"));
      int i = 0;
      while (fp == 0 &&  i < 15)
      {
        ACE_DEBUG ((LM_DEBUG,
          ACE_TEXT("(%P|%t) waiting monitor1 done ...\n")));
        ACE_OS::sleep (1);
        ++ i;
        fp = ACE_OS::fopen (synch_fname, ACE_TEXT("r"));
      }

      if (fp != 0)
        ACE_OS::fclose (fp);

      // Now change the changeable qos. The second monitor should get the updated qos from BIT.

      part_user_data_len = static_cast<CORBA::ULong>(ACE_OS::strlen (UPDATED_PART_USER_DATA));
      partQos.user_data.value.length (part_user_data_len);
      partQos.user_data.value.replace (part_user_data_len,
                                       part_user_data_len,
                                       reinterpret_cast<CORBA::Octet*>(UPDATED_PART_USER_DATA));
      participant->set_qos (partQos);

      dw_user_data_len = static_cast<CORBA::ULong>(ACE_OS::strlen (UPDATED_DW_USER_DATA));
      dw_qos.user_data.value.length (dw_user_data_len);
      dw_qos.user_data.value.replace (dw_user_data_len,
                                      dw_user_data_len,
                                      reinterpret_cast<CORBA::Octet*>(UPDATED_DW_USER_DATA));
      dw->set_qos (dw_qos);

      group_data_len = static_cast<CORBA::ULong> (ACE_OS::strlen (UPDATED_GROUP_DATA));
      pub_qos.group_data.value.length (group_data_len);
      pub_qos.group_data.value.replace (group_data_len,
                                        group_data_len,
                                        reinterpret_cast<CORBA::Octet*>(UPDATED_GROUP_DATA));
      pub->set_qos (pub_qos);

      topic_data_len = static_cast<CORBA::ULong>(ACE_OS::strlen (UPDATED_TOPIC_DATA));
      topic_qos.topic_data.value.length (topic_data_len);
      topic_qos.topic_data.value.replace (topic_data_len,
                                          topic_data_len,
                                          reinterpret_cast<CORBA::Octet*>(UPDATED_TOPIC_DATA));
      topic->set_qos (topic_qos);

      Writer* writer = new Writer(dw.in());

      writer->start ();
      while ( !writer->is_finished()) {
        ACE_Time_Value small_time(0,250000);
        ACE_OS::sleep (small_time);
      }

      // Cleanup
      writer->end ();
      delete writer;
      participant->delete_contained_entities();
      dpf->delete_participant(participant.in ());
      TheServiceParticipant->shutdown ();
  }
  catch (CORBA::Exception& e)
    {
       cerr << "publisher: PUB: Exception caught in main.cpp:" << endl
         << e << endl;
      exit(1);
    }

  return 0;
}