예제 #1
0
DDS_Publisher createPublisher(char* publisherName)
{
   DDS_Publisher publisher;
   DDS_PublisherQos* publisherQos = DDS_PublisherQos__alloc();
   checkHandle(publisherQos, "DDS_PublisherQos__alloc");
   g_status = DDS_DomainParticipant_get_default_publisher_qos(g_domainParticipant, publisherQos);
   checkStatus(g_status, "DDS_DomainParticipant_get_default_publisher_qos");
   publisherQos->partition.name._length = 1;
   publisherQos->partition.name._maximum = 1;
   publisherQos->partition.name._release = TRUE;
   publisherQos->partition.name._buffer = DDS_StringSeq_allocbuf(1);
   checkHandle(publisherQos->partition.name._buffer, "DDS_StringSeq_allocbuf");
   publisherQos->partition.name._buffer[0] = DDS_string_dup(g_partitionName);
   checkHandle(publisherQos->partition.name._buffer[0], "DDS_string_dup");

   /* Create a Publisher for the application. */
   publisher = DDS_DomainParticipant_create_publisher(g_domainParticipant, publisherQos, NULL, DDS_STATUS_MASK_NONE);
   checkHandle(publisher, "DDS_DomainParticipant_create_publisher");

   DDS_free(publisherQos);
   return publisher;
}
예제 #2
0
DDS_Subscriber createSubscriber()
{
   DDS_Subscriber subscriber;
   // Adapt the default SubscriberQos to read from the Partition with the given name.
   DDS_SubscriberQos* subscriberQos = DDS_SubscriberQos__alloc();
   checkHandle(subscriberQos, "DDS_SubscriberQos__alloc");
   g_status = DDS_DomainParticipant_get_default_subscriber_qos(g_domainParticipant, subscriberQos);
   checkStatus(g_status, "DDS_DomainParticipant_get_default_subscriber_qos");
   subscriberQos->partition.name._length = 1;
   subscriberQos->partition.name._maximum = 1;
   subscriberQos->partition.name._buffer = DDS_StringSeq_allocbuf(1);
   checkHandle(subscriberQos->partition.name._buffer, "DDS_StringSeq_allocbuf");
   subscriberQos->partition.name._buffer[0] = DDS_string_dup(g_partitionName);
   checkHandle(subscriberQos->partition.name._buffer[0], "DDS_string_dup");

   // Create a Subscriber for the MessageBoard application.
   subscriber = DDS_DomainParticipant_create_subscriber(g_domainParticipant, subscriberQos, NULL, DDS_STATUS_MASK_NONE);
   checkHandle(subscriber, "DDS_DomainParticipant_create_subscriber");

   DDS_free(subscriberQos);

   return subscriber;
}
예제 #3
0
int
main (
    int argc,
    char *argv[])
{
    DDS_DomainId_t                             myDomain           = DDS_OBJECT_NIL;
    DDS_DomainParticipantFactory               dpf                = DDS_OBJECT_NIL;
    DDS_DomainParticipant                      dp                 = DDS_OBJECT_NIL;
    DDS_Publisher                              p                  = DDS_OBJECT_NIL;
    DDS_Subscriber                             s                  = DDS_OBJECT_NIL;

    pingpong_PP_min_msgDataWriter              PP_min_writer      = DDS_OBJECT_NIL;
    pingpong_PP_seq_msgDataWriter              PP_seq_writer      = DDS_OBJECT_NIL;
    pingpong_PP_string_msgDataWriter           PP_string_writer   = DDS_OBJECT_NIL;
    pingpong_PP_fixed_msgDataWriter            PP_fixed_writer    = DDS_OBJECT_NIL;
    pingpong_PP_array_msgDataWriter            PP_array_writer    = DDS_OBJECT_NIL;
    pingpong_PP_bseq_msgDataWriter      PP_bseq_writer    = DDS_OBJECT_NIL;

    pingpong_PP_min_msgDataReader              PP_min_reader      = DDS_OBJECT_NIL;
    pingpong_PP_seq_msgDataReader              PP_seq_reader      = DDS_OBJECT_NIL;
    pingpong_PP_string_msgDataReader           PP_string_reader   = DDS_OBJECT_NIL;
    pingpong_PP_fixed_msgDataReader            PP_fixed_reader    = DDS_OBJECT_NIL;
    pingpong_PP_array_msgDataReader            PP_array_reader    = DDS_OBJECT_NIL;
    pingpong_PP_bseq_msgDataReader      PP_bseq_reader    = DDS_OBJECT_NIL;
    pingpong_PP_quit_msgDataReader             PP_quit_reader     = DDS_OBJECT_NIL;

    pingpong_PP_min_msgTypeSupport             PP_min_dt;
    pingpong_PP_seq_msgTypeSupport             PP_seq_dt;
    pingpong_PP_string_msgTypeSupport          PP_string_dt;
    pingpong_PP_fixed_msgTypeSupport           PP_fixed_dt;
    pingpong_PP_array_msgTypeSupport           PP_array_dt;
    pingpong_PP_bseq_msgTypeSupport     PP_bseq_dt;
    pingpong_PP_quit_msgTypeSupport            PP_quit_dt;

    DDS_sequence_pingpong_PP_min_msg           PP_min_dataList    = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_sequence_pingpong_PP_seq_msg           PP_seq_dataList    = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_sequence_pingpong_PP_string_msg        PP_string_dataList = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_sequence_pingpong_PP_fixed_msg         PP_fixed_dataList  = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_sequence_pingpong_PP_array_msg         PP_array_dataList  = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_sequence_pingpong_PP_bseq_msg   PP_bseq_dataList  = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_sequence_pingpong_PP_quit_msg          PP_quit_dataList   = { 0, 0, DDS_OBJECT_NIL, FALSE };

    DDS_StatusCondition                        PP_min_sc;
    DDS_StatusCondition                        PP_seq_sc;
    DDS_StatusCondition                        PP_string_sc;
    DDS_StatusCondition                        PP_fixed_sc;
    DDS_StatusCondition                        PP_array_sc;
    DDS_StatusCondition                        PP_bseq_sc;
    DDS_StatusCondition                        PP_quit_sc;

    DDS_Topic                                  PP_min_topic       = DDS_OBJECT_NIL;
    DDS_Topic                                  PP_seq_topic       = DDS_OBJECT_NIL;
    DDS_Topic                                  PP_string_topic    = DDS_OBJECT_NIL;
    DDS_Topic                                  PP_fixed_topic     = DDS_OBJECT_NIL;
    DDS_Topic                                  PP_array_topic     = DDS_OBJECT_NIL;
    DDS_Topic                                  PP_bseq_topic     = DDS_OBJECT_NIL;
    DDS_Topic                                  PP_quit_topic      = DDS_OBJECT_NIL;

    DDS_ConditionSeq                          *conditionList;
    DDS_SampleInfoSeq                          infoList           = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_WaitSet                                w;

    DDS_DomainParticipantQos                  *dpQos;
    DDS_TopicQos                              *tQos;
    DDS_PublisherQos                          *pQos;
    DDS_DataWriterQos                         *dwQos;
    DDS_SubscriberQos                         *sQos;
    DDS_DataReaderQos                         *drQos;

    DDS_boolean                                terminate = FALSE;

    DDS_ReturnCode_t                           result;
    int                                        i;
    int                                        imax;
    int                                        j;
    int                                        jmax;

    printf ("Starting pong example\n");
    fflush(stdout);
    /*
     * Evaluate cmdline arguments
     */

#ifdef INTEGRITY
    read_partition = "PongRead";
    write_partition = "PongWrite";
#else
    if (argc != 1) {
        if (argc != 3) {
            printf ("Invalid.....\n Usage: %s [READ_PARTITION WRITE_PARTITION]\n", argv[0]);
            exit (1);
        }
        read_partition  = argv[1];
        write_partition = argv[2];
    }
#endif

    /*
     * Create WaitSet
     */
    w = DDS_WaitSet__alloc ();
    /*
     * Initialize Qos variables
     */ 
    dpQos = DDS_DomainParticipantQos__alloc();
    tQos  = DDS_TopicQos__alloc();
    pQos  = DDS_PublisherQos__alloc();
    dwQos = DDS_DataWriterQos__alloc();
    sQos  = DDS_SubscriberQos__alloc();
    drQos = DDS_DataReaderQos__alloc();
    /*
     * Initialize condition list
     */
    conditionList = NULL;

    /*
     * Create participant
     */
    dpf = DDS_DomainParticipantFactory_get_instance ();
    dp = DDS_DomainParticipantFactory_create_participant (dpf, myDomain, DDS_PARTICIPANT_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);
    if (dp == DDS_OBJECT_NIL) {
        printf ("%s PONG: ERROR - Splice Daemon not running\n", argv[0]);
        exit(1);
    }

    /* 
     * Create PONG publisher
     */
    DDS_DomainParticipant_get_default_publisher_qos (dp, pQos);
    pQos->partition.name._length = 1;
    pQos->partition.name._maximum = 1;
    pQos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    pQos->partition.name._buffer[0] = DDS_string_alloc (strlen (write_partition) + 1);
    strcpy (pQos->partition.name._buffer[0], write_partition);
    p = DDS_DomainParticipant_create_publisher (dp, pQos, NULL, DDS_STATUS_MASK_NONE);
    DDS_free (pQos);

    /*
     * Create PING subscriber
     */
    DDS_DomainParticipant_get_default_subscriber_qos (dp, sQos);
    sQos->partition.name._length = 1;
    sQos->partition.name._maximum = 1;
    sQos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    sQos->partition.name._buffer[0] = DDS_string_alloc (strlen (read_partition) + 1);
    strcpy (sQos->partition.name._buffer[0], read_partition);
    s = DDS_DomainParticipant_create_subscriber (dp, sQos, NULL, DDS_STATUS_MASK_NONE);
    DDS_free (sQos);

    /*
     * PP_min_msg
     */
    
    /* Create Topic */
    PP_min_dt = pingpong_PP_min_msgTypeSupport__alloc ();
    pingpong_PP_min_msgTypeSupport_register_type (PP_min_dt, dp, "pingpong::PP_min_msg");
    PP_min_topic = DDS_DomainParticipant_create_topic (dp, "PP_min_topic", "pingpong::PP_min_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_min_writer = DDS_Publisher_create_datawriter (p, PP_min_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_min_reader = DDS_Subscriber_create_datareader (s, PP_min_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_min_sc = DDS_DataReader_get_statuscondition (PP_min_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_min_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_min_sc);

    /*
     * PP_seq_msg
     */

    /*  Create Topic */
    PP_seq_dt = pingpong_PP_seq_msgTypeSupport__alloc ();
    pingpong_PP_seq_msgTypeSupport_register_type (PP_seq_dt, dp, "pingpong::PP_seq_msg");
    PP_seq_topic = DDS_DomainParticipant_create_topic (dp, "PP_seq_topic", "pingpong::PP_seq_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_seq_writer = DDS_Publisher_create_datawriter (p, PP_seq_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_seq_reader = DDS_Subscriber_create_datareader (s, PP_seq_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_seq_sc = DDS_DataReader_get_statuscondition (PP_seq_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_seq_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_seq_sc);

    /*
     * PP_string_msg
     */

    /*  Create Topic */
    PP_string_dt = pingpong_PP_string_msgTypeSupport__alloc ();
    pingpong_PP_string_msgTypeSupport_register_type (PP_string_dt, dp, "pingpong::PP_string_msg");
    PP_string_topic = DDS_DomainParticipant_create_topic (dp, "PP_string_topic", "pingpong::PP_string_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_string_writer = DDS_Publisher_create_datawriter (p, PP_string_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_string_reader = DDS_Subscriber_create_datareader (s, PP_string_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_string_sc = DDS_DataReader_get_statuscondition (PP_string_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_string_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_string_sc);

    /*
     * PP_fixed_msg
     */
    
    /*  Create Topic */
    PP_fixed_dt = pingpong_PP_fixed_msgTypeSupport__alloc ();
    pingpong_PP_fixed_msgTypeSupport_register_type (PP_fixed_dt, dp, "pingpong::PP_fixed_msg");
    PP_fixed_topic = DDS_DomainParticipant_create_topic (dp, "PP_fixed_topic", "pingpong::PP_fixed_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_fixed_writer = DDS_Publisher_create_datawriter (p, PP_fixed_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_fixed_reader = DDS_Subscriber_create_datareader (s, PP_fixed_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_fixed_sc = DDS_DataReader_get_statuscondition (PP_fixed_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_fixed_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_fixed_sc);

    /*
     * PP_array_msg
     */

    /*  Create Topic */
    PP_array_dt = pingpong_PP_array_msgTypeSupport__alloc ();
    pingpong_PP_array_msgTypeSupport_register_type (PP_array_dt, dp, "pingpong::PP_array_msg");
    PP_array_topic = DDS_DomainParticipant_create_topic (dp, "PP_array_topic", "pingpong::PP_array_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_array_writer = DDS_Publisher_create_datawriter (p, PP_array_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_array_reader = DDS_Subscriber_create_datareader (s, PP_array_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_array_sc = DDS_DataReader_get_statuscondition (PP_array_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_array_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_array_sc);

    /*
     * PP_bseq_msg
     */

    /*  Create Topic */
    PP_bseq_dt = pingpong_PP_bseq_msgTypeSupport__alloc ();
    pingpong_PP_bseq_msgTypeSupport_register_type (PP_bseq_dt, dp, "pingpong::PP_bseq_msg");
    PP_bseq_topic = DDS_DomainParticipant_create_topic (dp, "PP_bseq_topic", "pingpong::PP_bseq_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_bseq_writer = DDS_Publisher_create_datawriter (p, PP_bseq_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_bseq_reader = DDS_Subscriber_create_datareader (s, PP_bseq_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_bseq_sc = DDS_DataReader_get_statuscondition (PP_bseq_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_bseq_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_bseq_sc);

    /*
     * PP_quit_msg
     */
    
    /*  Create Topic */
    PP_quit_dt = pingpong_PP_quit_msgTypeSupport__alloc ();
    pingpong_PP_quit_msgTypeSupport_register_type (PP_quit_dt, dp, "pingpong::PP_quit_msg");
    PP_quit_topic = DDS_DomainParticipant_create_topic (dp, "PP_quit_topic", "pingpong::PP_quit_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_quit_reader = DDS_Subscriber_create_datareader (s, PP_quit_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_quit_sc = DDS_DataReader_get_statuscondition (PP_quit_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_quit_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_quit_sc);

    while (!terminate) {
	DDS_Duration_t wait_timeout = DDS_DURATION_INFINITE;

        /* printf ("PONG: waiting for PING\n"); */
        conditionList = DDS_ConditionSeq__alloc();
        result = DDS_WaitSet_wait (w, conditionList, &wait_timeout);

        if (result == DDS_RETCODE_OK) {
            imax = conditionList->_length;
            for (i = 0; i < imax; i++) {
                if (conditionList->_buffer[i] == PP_min_sc) {
    		    /* printf ("PONG: PING_min arrived\n"); */
                    result = pingpong_PP_min_msgDataReader_take (PP_min_reader, &PP_min_dataList, &infoList, DDS_LENGTH_UNLIMITED,
                                 DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
                    jmax = PP_min_dataList._length;
                    if (jmax != 0) {
                        for (j = 0; j < jmax; j++) {
                            if (infoList._buffer[j].valid_data) {
                                result = pingpong_PP_min_msgDataWriter_write (PP_min_writer, &PP_min_dataList._buffer[j], DDS_HANDLE_NIL);
                            }
                        }
                        result = pingpong_PP_min_msgDataReader_return_loan (PP_min_reader, &PP_min_dataList, &infoList);
                    } else {
                        printf ("PONG: PING_min triggered, but no data available\n");
                    }
                } else if (conditionList->_buffer[i] == PP_seq_sc) {
    		    /* printf ("PONG: PING_seq arrived\n"); */
                    result = pingpong_PP_seq_msgDataReader_take (PP_seq_reader, &PP_seq_dataList, &infoList, DDS_LENGTH_UNLIMITED,
                                 DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
                    jmax = PP_seq_dataList._length;
                    if (jmax != 0) {
                        for (j = 0; j < jmax; j++) {
                            if (infoList._buffer[j].valid_data) {
                                result = pingpong_PP_seq_msgDataWriter_write (PP_seq_writer, &PP_seq_dataList._buffer[j], DDS_HANDLE_NIL);
                            }
                        }
                        result = pingpong_PP_seq_msgDataReader_return_loan (PP_seq_reader, &PP_seq_dataList, &infoList);
                    } else {
                        printf ("PONG: PING_seq triggered, but no data available\n");
                    }
                } else if (conditionList->_buffer[i] == PP_string_sc) {
    		    /* printf ("PONG: PING_string arrived\n"); */
                    result = pingpong_PP_string_msgDataReader_take (PP_string_reader, &PP_string_dataList, &infoList, DDS_LENGTH_UNLIMITED,
                                 DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
                    jmax = PP_string_dataList._length;
                    if (jmax != 0) {
                        for (j = 0; j < jmax; j++) {
                            if (infoList._buffer[j].valid_data) {
                                result = pingpong_PP_string_msgDataWriter_write (PP_string_writer, &PP_string_dataList._buffer[j], DDS_HANDLE_NIL);
                            }
                        }
                        result = pingpong_PP_string_msgDataReader_return_loan (PP_string_reader, &PP_string_dataList, &infoList);
                    } else {
                        printf ("PONG: PING_string triggered, but no data available\n");
                        exit(1);
                    }
                } else if (conditionList->_buffer[i] == PP_fixed_sc) {
    		    /* printf ("PONG: PING_fixed arrived\n"); */
                    result = pingpong_PP_fixed_msgDataReader_take (PP_fixed_reader, &PP_fixed_dataList, &infoList, DDS_LENGTH_UNLIMITED,
                                 DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
                    jmax = PP_fixed_dataList._length;
                    if (jmax != 0) {
                        for (j = 0; j < jmax; j++) {
                            if (infoList._buffer[j].valid_data) {
                                result = pingpong_PP_fixed_msgDataWriter_write (PP_fixed_writer, &PP_fixed_dataList._buffer[j], DDS_HANDLE_NIL);
                            }
                        }
                        result = pingpong_PP_fixed_msgDataReader_return_loan (PP_fixed_reader, &PP_fixed_dataList, &infoList);
                    } else {
                        printf ("PONG: PING_fixed triggered, but no data available\n");
                    }
                } else if (conditionList->_buffer[i] == PP_array_sc) {
    		    /* printf ("PONG: PING_array arrived\n"); */
                    result = pingpong_PP_array_msgDataReader_take (PP_array_reader, &PP_array_dataList, &infoList, DDS_LENGTH_UNLIMITED,
                                 DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
                    jmax = PP_array_dataList._length;
                    if (jmax != 0) {
                        for (j = 0; j < jmax; j++) {
                            if (infoList._buffer[j].valid_data) {
                                result = pingpong_PP_array_msgDataWriter_write (PP_array_writer, &PP_array_dataList._buffer[j], DDS_HANDLE_NIL);
                            }
                        }
                        result = pingpong_PP_array_msgDataReader_return_loan (PP_array_reader, &PP_array_dataList, &infoList);
                    } else {
                        printf ("PONG: PING_array triggered, but no data available\n");
                    }
                } else if (conditionList->_buffer[i] == PP_bseq_sc) {
    		    /* printf ("PONG: PING_bseq arrived\n"); */
                    result = pingpong_PP_bseq_msgDataReader_take (PP_bseq_reader, &PP_bseq_dataList, &infoList, DDS_LENGTH_UNLIMITED,
                                 DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
                    jmax = PP_bseq_dataList._length;
                    if (jmax != 0) {
                        for (j = 0; j < jmax; j++) {
                            if (infoList._buffer[j].valid_data) {
                                result = pingpong_PP_bseq_msgDataWriter_write (PP_bseq_writer, &PP_bseq_dataList._buffer[j], DDS_HANDLE_NIL);
                            }
                        }
                        result = pingpong_PP_bseq_msgDataReader_return_loan (PP_bseq_reader, &PP_bseq_dataList, &infoList);
                    } else {
                        printf ("PONG: PING_bseq triggered, but no data available\n");
                    }
                } else if (conditionList->_buffer[i] == PP_quit_sc) {
    		    /* printf ("PONG: PING_quit arrived\n"); */
                    result = pingpong_PP_quit_msgDataReader_take (PP_quit_reader, &PP_quit_dataList, &infoList, DDS_LENGTH_UNLIMITED,
                                 DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
                    jmax = PP_quit_dataList._length;
                    if (jmax != 0) {
                        if (PP_quit_dataList._buffer[0].quit) {
                            terminate = TRUE;
                        }
                        result = pingpong_PP_quit_msgDataReader_return_loan (PP_quit_reader, &PP_quit_dataList, &infoList);
                    } else {
                        printf ("PONG: PING_quit triggered, but no data available\n");
                    }
                } else {
                    printf ("PONG: unknown condition triggered: %lx\n", (unsigned long)conditionList->_buffer[i]);
                }
            }
        } else {
            if (result == DDS_RETCODE_ALREADY_DELETED) {
                terminate = TRUE;
            }
            printf ("PONG: wait returned not ok: %d\n", result);
        }
        DDS_free(conditionList);
    }

    result = DDS_Subscriber_delete_datareader (s, PP_min_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_min_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_seq_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_seq_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_string_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_string_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_fixed_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_fixed_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_array_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_array_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_bseq_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_bseq_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_quit_reader);
    result = DDS_DomainParticipant_delete_subscriber (dp, s);
    result = DDS_DomainParticipant_delete_publisher (dp, p);
    result = DDS_DomainParticipant_delete_topic (dp, PP_min_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_seq_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_string_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_fixed_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_array_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_bseq_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_quit_topic);
    result = DDS_DomainParticipantFactory_delete_participant (dpf, dp);
    DDS_free (w);
    DDS_free (PP_min_dt);
    DDS_free (PP_seq_dt);
    DDS_free (PP_string_dt);
    DDS_free (PP_fixed_dt);
    DDS_free (PP_array_dt);
    DDS_free (PP_bseq_dt);
    DDS_free (PP_quit_dt);
    DDS_free (dpQos);
    DDS_free (tQos);
    DDS_free (dwQos);
    DDS_free (drQos);

    printf ("Completed pong example\n");
    fflush(stdout);
    return 0;
}
예제 #4
0
파일: ping.cpp 프로젝트: xrl/opensplice_dds
int
main (
    int argc,
    char *argv[]
    )
{
    DDS_ConditionSeq                        *conditionList;
    DDS_WaitSet                              w;
    DDS_Condition                            exp_condition;
    pong_handler                            *active_handler;

    DDS_DomainParticipantQos                 *dpQos;
    DDS_TopicQos                             *tQos;
    DDS_PublisherQos                         *pQos;
    DDS_DataWriterQos                        *dwQos;
    DDS_SubscriberQos                        *sQos;
    DDS_DataReaderQos                        *drQos;
    
    time_t                                   clock = time (NULL);
    DDS_Duration_t                           wait_timeout = {3,0};

    DDS_ReturnCode_t                         result;
    DDS_boolean                              finish_flag = FALSE;
    DDS_boolean                              timeout_flag = FALSE;
    DDS_boolean                              terminate = FALSE;

    int                                      imax = 1;
    int                                      i;
    unsigned int                             block;

    init_clock();
    /*
     * init timing statistics 
     */
    init_stats (&roundtrip,    "round_trip");
    init_stats (&write_access, "write_access");
    init_stats (&read_access,  "read_access");

    /*
     * Evaluate cmdline arguments
     */
    if (argc != 1) {
        if (argc != 6) {
            printf ("Invalid.....\n Usage: %s [blocks blocksize topic_id WRITE_PARTITION READ_PARTITION]\n", argv[0]);
            exit (1);
        }
        nof_blocks      = atoi (argv[1]);
        nof_cycles      = atoi (argv[2]);
        topic_id        = argv[3][0];
        write_partition = argv[4];
        read_partition  = argv[5];
    }

    /*
     * Create WaitSet
     */
    w = DDS_WaitSet__alloc ();
    /*
     * Initialize Qos variables
     */
    dpQos = DDS_DomainParticipantQos__alloc();
    tQos  = DDS_TopicQos__alloc();
    pQos  = DDS_PublisherQos__alloc();
    dwQos = DDS_DataWriterQos__alloc();
    sQos  = DDS_SubscriberQos__alloc();
    drQos = DDS_DataReaderQos__alloc();
    /*
     * Initialize condition list
     */
    conditionList = NULL;

    /*
     * Create participant
     */
    dpf = DDS_DomainParticipantFactory_get_instance ();
	dp = DDS_DomainParticipantFactory_create_participant (dpf, myDomain, DDS_PARTICIPANT_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);
    if (dp == DDS_HANDLE_NIL) {
        printf ("%s PING: ERROR - Splice Daemon not running", argv[0]);
        exit (1);
    }

    /* 
     * Create PING publisher
     */
    DDS_DomainParticipant_get_default_publisher_qos (dp, pQos);
    pQos->partition.name._length = 1;
    pQos->partition.name._maximum = 1;
    pQos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    pQos->partition.name._buffer[0] = DDS_string_alloc (strlen(write_partition) + 1);
    strcpy (pQos->partition.name._buffer[0], write_partition);
    p = DDS_DomainParticipant_create_publisher (dp, pQos, NULL, DDS_STATUS_MASK_NONE);
    DDS_free (pQos);

    /*
     * Create PONG subscriber
     */
    DDS_DomainParticipant_get_default_subscriber_qos (dp, sQos);
    sQos->partition.name._length = 1;
    sQos->partition.name._maximum = 1;
    sQos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    sQos->partition.name._buffer[0] = DDS_string_alloc (strlen(read_partition) + 1);
    strcpy (sQos->partition.name._buffer[0], read_partition);
    s = DDS_DomainParticipant_create_subscriber (dp, sQos, NULL, DDS_STATUS_MASK_NONE);
    DDS_free (sQos);

    /*
     * PP_min_msg
     */

    /*  Create Topic */
    PP_min_dt = pingpong_PP_min_msgTypeSupport__alloc ();
    pingpong_PP_min_msgTypeSupport_register_type (PP_min_dt, dp, "pingpong::PP_min_msg");
    PP_min_topic = DDS_DomainParticipant_create_topic (dp, "PP_min_topic", "pingpong::PP_min_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_min_writer = DDS_Publisher_create_datawriter (p, PP_min_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_min_reader = DDS_Subscriber_create_datareader (s, PP_min_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_min_sc = DDS_DataReader_get_statuscondition (PP_min_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_min_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_min_sc);

    /*
     * PP_seq_msg
     */

    /*  Create Topic */
    PP_seq_dt = pingpong_PP_seq_msgTypeSupport__alloc ();
    pingpong_PP_seq_msgTypeSupport_register_type (PP_seq_dt, dp, "pingpong::PP_seq_msg");
    PP_seq_topic = DDS_DomainParticipant_create_topic (dp, "PP_seq_topic", "pingpong::PP_seq_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_seq_writer = DDS_Publisher_create_datawriter (p, PP_seq_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_seq_reader = DDS_Subscriber_create_datareader (s, PP_seq_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);
    
    /* Add datareader statuscondition to waitset */
    PP_seq_sc = DDS_DataReader_get_statuscondition (PP_seq_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_seq_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_seq_sc);
    
    /*
     * PP_string_msg
     */

    /*  Create Topic */
    PP_string_dt = pingpong_PP_string_msgTypeSupport__alloc ();
    pingpong_PP_string_msgTypeSupport_register_type (PP_string_dt, dp, "pingpong::PP_string_msg");
    PP_string_topic = DDS_DomainParticipant_create_topic (dp, "PP_string_topic", "pingpong::PP_string_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_string_writer = DDS_Publisher_create_datawriter (p, PP_string_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_string_reader = DDS_Subscriber_create_datareader (s, PP_string_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_string_sc = DDS_DataReader_get_statuscondition (PP_string_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_string_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_string_sc);
    
    /*
     * PP_fixed_msg
     */
    
    /*  Create Topic */
    PP_fixed_dt = pingpong_PP_fixed_msgTypeSupport__alloc ();
    pingpong_PP_fixed_msgTypeSupport_register_type (PP_fixed_dt, dp, "pingpong::PP_fixed_msg");
    PP_fixed_topic = DDS_DomainParticipant_create_topic (dp, "PP_fixed_topic", "pingpong::PP_fixed_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_fixed_writer = DDS_Publisher_create_datawriter (p, PP_fixed_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_fixed_reader = DDS_Subscriber_create_datareader (s, PP_fixed_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);
    
    /* Add datareader statuscondition to waitset */
    PP_fixed_sc = DDS_DataReader_get_statuscondition (PP_fixed_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_fixed_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_fixed_sc);
    
    /*
     * PP_array_msg
     */
    
    /*  Create Topic */
    PP_array_dt = pingpong_PP_array_msgTypeSupport__alloc ();
    pingpong_PP_array_msgTypeSupport_register_type (PP_array_dt, dp, "pingpong::PP_array_msg");
    PP_array_topic = DDS_DomainParticipant_create_topic (dp, "PP_array_topic", "pingpong::PP_array_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_array_writer = DDS_Publisher_create_datawriter (p, PP_array_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_array_reader = DDS_Subscriber_create_datareader (s, PP_array_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);
    
    /* Add datareader statuscondition to waitset */
    PP_array_sc = DDS_DataReader_get_statuscondition (PP_array_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_array_sc, DDS_DATA_AVAILABLE_STATUS);
    result = DDS_WaitSet_attach_condition (w, PP_array_sc);

    /*
     * PP_quit_msg
     */
    
    /*  Create Topic */
    PP_quit_dt = pingpong_PP_quit_msgTypeSupport__alloc ();
    pingpong_PP_quit_msgTypeSupport_register_type (PP_quit_dt, dp, "pingpong::PP_quit_msg");
    PP_quit_topic = DDS_DomainParticipant_create_topic (dp, "PP_quit_topic", "pingpong::PP_quit_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_quit_writer = DDS_Publisher_create_datawriter (p, PP_quit_topic, DDS_DATAWRITER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    for (block = 0; block < nof_blocks ; block++) {
        while (!finish_flag) {
            /*
             * Send Initial message
             */
            timeout_flag = FALSE;
            
            switch(topic_id) {
                case 'm':
                    {
                        /* printf ("PING: sending initial ping_min\n"); */
                        pingpong_PP_min_msg *PPdata = pingpong_PP_min_msg__alloc ();
                        exp_condition = PP_min_sc;
                        active_handler = &PP_min_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        preWriteTime = timeGet ();
                        result = pingpong_PP_min_msgDataWriter_write (PP_min_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 'q':
                    {
                        /* printf ("PING: sending initial ping_seq\n"); */
                        pingpong_PP_seq_msg *PPdata = pingpong_PP_seq_msg__alloc ();
                        exp_condition = PP_seq_sc;
                        active_handler = &PP_seq_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        preWriteTime = timeGet ();
                        result = pingpong_PP_seq_msgDataWriter_write (PP_seq_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 's':
                    {
                        /* printf ("PING: sending initial ping_string\n"); */
                        pingpong_PP_string_msg *PPdata = pingpong_PP_string_msg__alloc ();
                        exp_condition = PP_string_sc;
                        active_handler = &PP_string_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        PPdata->a_string = DDS_string_alloc (8);
                        strcpy (PPdata->a_string, "a_string");
                        preWriteTime = timeGet ();
                        result = pingpong_PP_string_msgDataWriter_write (PP_string_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 'f':
                    {
                        /* printf ("PING: sending initial ping_fixed\n"); */
                        pingpong_PP_fixed_msg *PPdata = pingpong_PP_fixed_msg__alloc ();
                        exp_condition = PP_fixed_sc;
                        active_handler = &PP_fixed_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        PPdata->a_bstring = DDS_string_alloc (9);
                        strcpy (PPdata->a_bstring, "a_bstring");
                        preWriteTime = timeGet ();
                        result = pingpong_PP_fixed_msgDataWriter_write (PP_fixed_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 'a':
                    {
                        /* printf ("PING: sending initial ping_array\n"); */
                        pingpong_PP_array_msg *PPdata = pingpong_PP_array_msg__alloc ();
                        exp_condition = PP_array_sc;
                        active_handler = &PP_array_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        preWriteTime = timeGet ();
                        result = pingpong_PP_array_msgDataWriter_write (PP_array_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 't':
                    {
                        /* printf ("PING: sending initial ping_quit\n"); */
                        pingpong_PP_quit_msg *PPdata = pingpong_PP_quit_msg__alloc();
                        PPdata->quit = TRUE;
                        terminate = TRUE;
                        finish_flag = TRUE;
                        preWriteTime = timeGet ();
                        result = pingpong_PP_quit_msgDataWriter_write (PP_quit_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                default:
                    printf("Invalid topic-id\n");
                    exit(1);
            }

	    if (!terminate) {
                roundTripTime = preWriteTime;
                add_stats (&write_access, 1E6 * timeToReal (timeSub (postWriteTime, preWriteTime)));
            
                /*
                 * Wait for response, calculate timing, and send another data if not ready
                 */
                while (!(timeout_flag || finish_flag)) {
                    conditionList = DDS_ConditionSeq__alloc();
                    result = DDS_WaitSet_wait (w, conditionList, &wait_timeout);
                    if (conditionList) {
                        imax = conditionList->_length;
                        if (imax != 0) {
                            for (i = 0; i < imax; i++) {
                                if (conditionList->_buffer[i] == exp_condition) {
                                    finish_flag = active_handler (nof_cycles);
                                } else {
                                    printf ("PING: unexpected condition triggered: %x\n",
                                            (unsigned int)conditionList->_buffer[i]);
                                }
                            }
                        } else {
                            printf ("PING: TIMEOUT - message lost\n");
                            timeout_flag = TRUE;
                        }
                        DDS_free(conditionList);
                    } else {
                        printf ("PING: TIMEOUT - message lost\n");
                        timeout_flag = TRUE;
					}
                }
            }
        }
        if (!terminate) {
            finish_flag = FALSE;
            if (block == 0) {
                printf ("# PING PONG measurements (in us) \n");
                printf ("# Executed at: %s", ctime(&clock));
                printf ("#           Roundtrip time [us]             Write-access time [us]          Read-access time [us]\n");
                printf ("# Block     Count   mean    min    max      Count   mean    min    max      Count   mean    min    max\n");
            }
            printf ("%6d %10d %6.0f %6.0f %6.0f %10d %6.0f %6.0f %6.0f %10d %6.0f %6.0f %6.0f\n",
                block,
                roundtrip.count,
                roundtrip.average,
                roundtrip.min,
                roundtrip.max,
                write_access.count,
                write_access.average,
                write_access.min,
                write_access.max,
                read_access.count,
                read_access.average,
                read_access.min,
                read_access.max);
            fflush (NULL);
            init_stats (&write_access, "write_access");
            init_stats (&read_access,  "read_access");
            init_stats (&roundtrip,    "round_trip");
        }
    }
    result = DDS_Subscriber_delete_datareader (s, PP_min_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_min_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_seq_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_seq_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_string_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_string_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_fixed_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_fixed_writer);
    result = DDS_Subscriber_delete_datareader (s, PP_array_reader);
    result = DDS_Publisher_delete_datawriter (p, PP_array_writer);
    result = DDS_Publisher_delete_datawriter (p, PP_quit_writer);
    result = DDS_DomainParticipant_delete_subscriber (dp, s);
    result = DDS_DomainParticipant_delete_publisher (dp, p);
    result = DDS_DomainParticipant_delete_topic (dp, PP_min_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_seq_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_string_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_fixed_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_array_topic);
    result = DDS_DomainParticipant_delete_topic (dp, PP_quit_topic);
    result = DDS_DomainParticipantFactory_delete_participant (dpf, dp);
    DDS_free (w);
    DDS_free (PP_min_dt);
    DDS_free (PP_seq_dt);
    DDS_free (PP_string_dt);
    DDS_free (PP_fixed_dt);
    DDS_free (PP_array_dt);
    DDS_free (PP_quit_dt);
    DDS_free (dpQos);
    DDS_free (tQos);
    DDS_free (dwQos);
    DDS_free (drQos);

    return 0;
}
예제 #5
0
파일: UserLoad.c 프로젝트: xrl/opensplice
int main (int argc, char ** argv)
#endif
{
    /* Generic DDS entities */
    DDS_DomainParticipant           participant;
    DDS_Topic                       chatMessageTopic;
    DDS_Topic                       nameServiceTopic;
    DDS_Subscriber                  chatSubscriber;
    DDS_QueryCondition              singleUser;
    DDS_ReadCondition               newUser;
    DDS_StatusCondition             leftUser;
    DDS_GuardCondition              guard;
    DDS_WaitSet                     userLoadWS;
    DDS_LivelinessChangedStatus     livChangStatus;

    /* QosPolicy holders */
    DDS_TopicQos                    *setting_topic_qos;
    DDS_TopicQos                    *reliable_topic_qos;
    DDS_SubscriberQos               *sub_qos;
    DDS_DataReaderQos               *message_qos;

    /* DDS Identifiers */
    DDS_DomainId_t                  domain = NULL;
    DDS_ReturnCode_t                status;
    DDS_ConditionSeq                *guardList = NULL;
    DDS_Duration_t                  timeout = DDS_DURATION_INFINITE;

    /* Type-specific DDS entities */
    Chat_ChatMessageTypeSupport     chatMessageTS;
    Chat_NameServiceTypeSupport     nameServiceTS;
    Chat_NameServiceDataReader      nameServer;
    Chat_ChatMessageDataReader      loadAdmin;
    DDS_sequence_Chat_ChatMessage   msgList = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_sequence_Chat_NameService   nsList = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_SampleInfoSeq               infoSeq    = { 0, 0, DDS_OBJECT_NIL, FALSE };
    DDS_SampleInfoSeq               infoSeq2   = { 0, 0, DDS_OBJECT_NIL, FALSE };

    /* Others */
    DDS_StringSeq                   args;
    int                             closed = 0;
    DDS_unsigned_long               i, j;
    DDS_long                        prevCount = 0;
    char                            *partitionName;
    char                            *chatMessageTypeName = NULL;
    char                            *nameServiceTypeName = NULL;
    pthread_t                       tid;
    pthread_attr_t                  tattr;

    printf("Starting UserLoad example.\n");
    fflush(stdout);
    /* Create a DomainParticipant (using the 'TheParticipantFactory' convenience macro). */
    participant = DDS_DomainParticipantFactory_create_participant (
        DDS_TheParticipantFactory, 
        domain, 
        DDS_PARTICIPANT_QOS_DEFAULT, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(participant, "DDS_DomainParticipantFactory_create_participant");  

    /* Register the required datatype for ChatMessage. */
    chatMessageTS = Chat_ChatMessageTypeSupport__alloc();
    checkHandle(chatMessageTS, "Chat_ChatMessageTypeSupport__alloc");
    chatMessageTypeName = Chat_ChatMessageTypeSupport_get_type_name(chatMessageTS);
    status = Chat_ChatMessageTypeSupport_register_type(
        chatMessageTS, 
        participant, 
        chatMessageTypeName);
    checkStatus(status, "Chat_ChatMessageTypeSupport_register_type");
    
    /* Register the required datatype for NameService. */
    nameServiceTS = Chat_NameServiceTypeSupport__alloc();
    checkHandle(nameServiceTS, "Chat_NameServiceTypeSupport__alloc");
    nameServiceTypeName = Chat_NameServiceTypeSupport_get_type_name(nameServiceTS);
    status = Chat_NameServiceTypeSupport_register_type(
        nameServiceTS, 
        participant, 
        nameServiceTypeName);
    checkStatus(status, "Chat_NameServiceTypeSupport_register_type");

    /* Set the ReliabilityQosPolicy to RELIABLE. */
    reliable_topic_qos = DDS_TopicQos__alloc();
    checkHandle(reliable_topic_qos, "DDS_TopicQos__alloc");
    status = DDS_DomainParticipant_get_default_topic_qos(participant, reliable_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_topic_qos");
    reliable_topic_qos->reliability.kind = DDS_RELIABLE_RELIABILITY_QOS;
    
    /* Make the tailored QoS the new default. */
    status = DDS_DomainParticipant_set_default_topic_qos(participant, reliable_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_set_default_topic_qos");

    /* Use the changed policy when defining the ChatMessage topic */
    chatMessageTopic = DDS_DomainParticipant_create_topic( 
        participant, 
        "Chat_ChatMessage", 
        chatMessageTypeName, 
        reliable_topic_qos, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(chatMessageTopic, "DDS_DomainParticipant_create_topic (ChatMessage)");
    
    /* Set the DurabilityQosPolicy to TRANSIENT. */
    setting_topic_qos = DDS_TopicQos__alloc();
    checkHandle(setting_topic_qos, "DDS_TopicQos__alloc");
    status = DDS_DomainParticipant_get_default_topic_qos(participant, setting_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_topic_qos");
    setting_topic_qos->durability.kind = DDS_TRANSIENT_DURABILITY_QOS;

    /* Create the NameService Topic. */
    nameServiceTopic = DDS_DomainParticipant_create_topic( 
        participant, 
        "Chat_NameService", 
        nameServiceTypeName, 
        setting_topic_qos, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(nameServiceTopic, "DDS_DomainParticipant_create_topic");

    /* Adapt the default SubscriberQos to read from the "ChatRoom" Partition. */
    partitionName = "ChatRoom";
    sub_qos = DDS_SubscriberQos__alloc();
    checkHandle(sub_qos, "DDS_SubscriberQos__alloc");
    status = DDS_DomainParticipant_get_default_subscriber_qos (participant, sub_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_subscriber_qos");
    sub_qos->partition.name._length = 1;
    sub_qos->partition.name._maximum = 1;
    sub_qos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    checkHandle(sub_qos->partition.name._buffer, "DDS_StringSeq_allocbuf");
    sub_qos->partition.name._buffer[0] = DDS_string_alloc (strlen(partitionName) + 1);
    checkHandle(sub_qos->partition.name._buffer[0], "DDS_string_alloc");
    strcpy (sub_qos->partition.name._buffer[0], partitionName);

    /* Create a Subscriber for the UserLoad application. */
    chatSubscriber = DDS_DomainParticipant_create_subscriber(participant, sub_qos, NULL, DDS_STATUS_MASK_NONE);
    checkHandle(chatSubscriber, "DDS_DomainParticipant_create_subscriber");
    
    /* Create a DataReader for the NameService Topic (using the appropriate QoS). */
    nameServer = DDS_Subscriber_create_datareader( 
        chatSubscriber, 
        nameServiceTopic, 
        DDS_DATAREADER_QOS_USE_TOPIC_QOS, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(nameServer, "DDS_Subscriber_create_datareader (NameService)");

    /* Adapt the DataReaderQos for the ChatMessageDataReader to keep track of all messages. */
    message_qos = DDS_DataReaderQos__alloc();
    checkHandle(message_qos, "DDS_DataReaderQos__alloc");
    status = DDS_Subscriber_get_default_datareader_qos(chatSubscriber, message_qos);
    checkStatus(status, "DDS_Subscriber_get_default_datareader_qos");
    status = DDS_Subscriber_copy_from_topic_qos(chatSubscriber, message_qos, reliable_topic_qos);
    checkStatus(status, "DDS_Subscriber_copy_from_topic_qos");
    message_qos->history.kind = DDS_KEEP_ALL_HISTORY_QOS;

    /* Create a DataReader for the ChatMessage Topic (using the appropriate QoS). */
    loadAdmin = DDS_Subscriber_create_datareader( 
        chatSubscriber, 
        chatMessageTopic, 
        message_qos, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(loadAdmin, "DDS_Subscriber_create_datareader (ChatMessage)");
    
    /* Initialize the Query Arguments. */
    args._length = 1;
    args._maximum = 1;
    args._buffer = DDS_StringSeq_allocbuf(1);
    checkHandle(args._buffer, "DDS_StringSeq_allocbuf");
    args._buffer[0] = DDS_string_alloc (12);  /* Enough for maximum size numbers. */
    checkHandle(args._buffer[0], "DDS_string_alloc");
    sprintf(args._buffer[0], "%d", 0);
    
    /* Create a QueryCondition that will contain all messages with userID=ownID */
    singleUser = DDS_DataReader_create_querycondition( 
        loadAdmin, 
        DDS_ANY_SAMPLE_STATE, 
        DDS_ANY_VIEW_STATE, 
        DDS_ANY_INSTANCE_STATE, 
        "userID=%0", 
        &args);
    checkHandle(singleUser, "DDS_DataReader_create_querycondition (singleUser Query)");
    
    /* Create a ReadCondition that will contain new users only */
    newUser = DDS_DataReader_create_readcondition( 
        nameServer, 
        DDS_NOT_READ_SAMPLE_STATE, 
        DDS_NEW_VIEW_STATE, 
        DDS_ALIVE_INSTANCE_STATE);
    checkHandle(newUser, "DDS_DataReader_create_readcondition (newUser)");

    /* Obtain a StatusCondition that triggers only when a Writer changes Liveliness */
    leftUser = DDS_DataReader_get_statuscondition(loadAdmin);
    checkHandle(leftUser, "DDS_DataReader_get_statuscondition");
    status = DDS_StatusCondition_set_enabled_statuses(leftUser, DDS_LIVELINESS_CHANGED_STATUS);
    checkStatus(status, "DDS_StatusCondition_set_enabled_statuses");

    /* Create a bare guard which will be used to close the room */
    escape = DDS_GuardCondition__alloc();
    checkHandle(escape, "DDS_GuardCondition__alloc");

    /* Create a waitset and add the ReadConditions */
    userLoadWS = DDS_WaitSet__alloc();
    checkHandle(userLoadWS, "DDS_WaitSet__alloc");
    status = DDS_WaitSet_attach_condition(userLoadWS, newUser);
    checkStatus(status, "DDS_WaitSet_attach_condition (newUser)");
    status = DDS_WaitSet_attach_condition(userLoadWS, leftUser);
    checkStatus(status, "DDS_WaitSet_attach_condition (leftUser)");
    status = DDS_WaitSet_attach_condition(userLoadWS, escape);
    checkStatus(status, "DDS_WaitSet_attach_condition (escape)");
    
    /* Initialize and pre-allocate the GuardList used to obtain the triggered Conditions. */
    guardList = DDS_ConditionSeq__alloc();
    checkHandle(guardList, "DDS_ConditionSeq__alloc");
    guardList->_maximum = 3;
    guardList->_length = 0;
    guardList->_buffer = DDS_ConditionSeq_allocbuf(3);
    checkHandle(guardList->_buffer, "DDS_ConditionSeq_allocbuf");
    
    /* Remove all known Users that are not currently active. */
    status = Chat_NameServiceDataReader_take(
        nameServer,
        &nsList, 
        &infoSeq, 
        DDS_LENGTH_UNLIMITED, 
        DDS_ANY_SAMPLE_STATE, 
        DDS_ANY_VIEW_STATE, 
        DDS_NOT_ALIVE_INSTANCE_STATE);
    checkStatus(status, "Chat_NameServiceDataReader_take");
    status = Chat_NameServiceDataReader_return_loan(nameServer, &nsList, &infoSeq);
    checkStatus(status, "Chat_NameServiceDataReader_return_loan");
    
    /* Start the sleeper thread. */
    pthread_attr_init(&tattr);
    pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
    pthread_create (&tid, &tattr, delayedEscape, NULL);
    pthread_attr_destroy(&tattr);

    while (!closed) {
        /* Wait until at least one of the Conditions in the waitset triggers. */
        status = DDS_WaitSet_wait(userLoadWS, guardList, &timeout);
        checkStatus(status, "DDS_WaitSet_wait");

        /* Walk over all guards to display information */
        for (i = 0; i < guardList->_length; i++) {
            guard = guardList->_buffer[i];
            if (guard == newUser) {
                /* The newUser ReadCondition contains data */
                status = Chat_NameServiceDataReader_read_w_condition( 
                    nameServer, 
                    &nsList, 
                    &infoSeq, 
                    DDS_LENGTH_UNLIMITED, 
                    newUser);
                checkStatus(status, "Chat_NameServiceDataReader_read_w_condition");
                
                for (j = 0; j < nsList._length; j++) {
                    printf ("New user: %s\n", nsList._buffer[j].name);
                }
                status = Chat_NameServiceDataReader_return_loan(nameServer, &nsList, &infoSeq);
                checkStatus(status, "Chat_NameServiceDataReader_return_loan");

            } else if (guard == leftUser) {
                /* Some liveliness has changed (either a DataWriter joined or a DataWriter left) */
                status = DDS_DataReader_get_liveliness_changed_status(loadAdmin, &livChangStatus);
                checkStatus(status, "DDS_DataReader_get_liveliness_changed_status");
                if (livChangStatus.alive_count < prevCount) {
                    /* A user has left the ChatRoom, since a DataWriter lost its liveliness */
                    /* Take the effected users so tey will not appear in the list later on. */
                    status = Chat_NameServiceDataReader_take( 
                        nameServer, 
                        &nsList, 
                        &infoSeq, 
                        DDS_LENGTH_UNLIMITED, 
                        DDS_ANY_SAMPLE_STATE, 
                        DDS_ANY_VIEW_STATE, 
                        DDS_NOT_ALIVE_NO_WRITERS_INSTANCE_STATE);
                    checkStatus(status, "Chat_NameServiceDataReader_take");
    
                    for (j = 0; j < nsList._length; j++) {
                        /* re-apply query arguments */
                        sprintf(args._buffer[0], "%d", nsList._buffer[j].userID);
                        status = DDS_QueryCondition_set_query_parameters(singleUser, &args);
                        checkStatus(status, "DDS_QueryCondition_set_query_parameters");
    
                        /* Read this users history */
                        status = Chat_ChatMessageDataReader_take_w_condition( 
                            loadAdmin, 
                            &msgList, 
                            &infoSeq2, 
                            DDS_LENGTH_UNLIMITED, 
                            singleUser);
                        checkStatus(status, "Chat_ChatMessageDataReader_take_w_condition");
                        
                        /* Display the user and his history */
                        printf (
                            "Departed user %s has sent %d messages\n", 
                            nsList._buffer[j].name,
                            msgList._length);
                        status = Chat_ChatMessageDataReader_return_loan(loadAdmin, &msgList, &infoSeq2);
                        checkStatus(status, "Chat_ChatMessageDataReader_return_loan");
                    }
                    status = Chat_NameServiceDataReader_return_loan(nameServer, &nsList, &infoSeq);
                    checkStatus(status, "Chat_NameServiceDataReader_return_loan");
                }
                prevCount = livChangStatus.alive_count;

            } else if (guard == escape) {
                printf ("UserLoad has terminated.\n");
                closed = 1;
            }
            else
            {
                assert(0);
            };
        } /* for */
    } /* while (!closed) */

    /* Remove all Conditions from the WaitSet. */
    status = DDS_WaitSet_detach_condition(userLoadWS, escape);
    checkStatus(status, "DDS_WaitSet_detach_condition (escape)");
    status = DDS_WaitSet_detach_condition(userLoadWS, leftUser);
    checkStatus(status, "DDS_WaitSet_detach_condition (leftUser)");
    status = DDS_WaitSet_detach_condition(userLoadWS, newUser);
    checkStatus(status, "DDS_WaitSet_detach_condition (newUser)");

    /* Free all resources */
    DDS_free(guardList);
    DDS_free(args._buffer);
    DDS_free(userLoadWS);
    DDS_free(escape);
    DDS_free(setting_topic_qos);
    DDS_free(reliable_topic_qos);
    DDS_free(nameServiceTypeName);
    DDS_free(chatMessageTypeName);
    DDS_free(nameServiceTS);
    DDS_free(chatMessageTS);    
    status = DDS_DomainParticipant_delete_contained_entities(participant);
    checkStatus(status, "DDS_DomainParticipant_delete_contained_entities");
    status = DDS_DomainParticipantFactory_delete_participant(
        DDS_TheParticipantFactory, 
        participant);
    checkStatus(status, "DDS_DomainParticipantFactory_delete_participant");
    
    return 0;
}
예제 #6
0
int main (int argc, char ** argv)
#endif
{
    /* Generic DDS entities */
    DDS_DomainParticipantFactory    dpf;
    DDS_DomainParticipant           participant;
    DDS_Topic                       chatMessageTopic;
    DDS_Topic                       nameServiceTopic;
    DDS_Publisher                   chatPublisher;

    /* QosPolicy holders */
    DDS_TopicQos                    *reliable_topic_qos;
    DDS_TopicQos                    *setting_topic_qos;
    DDS_PublisherQos                *pub_qos;
    DDS_DataWriterQos               *dw_qos;

    /* DDS Identifiers */
    DDS_DomainId_t                  domain = NULL;
    DDS_InstanceHandle_t            userHandle;
    DDS_ReturnCode_t                status;

    /* Type-specific DDS entities */
    Chat_ChatMessageTypeSupport     chatMessageTS;
    Chat_NameServiceTypeSupport     nameServiceTS;
    Chat_ChatMessageDataWriter      talker;
    Chat_NameServiceDataWriter      nameServer;

    /* Sample definitions */
    Chat_ChatMessage                *msg;   /* Example on Heap */
    Chat_NameService                ns;     /* Example on Stack */
    
    /* Others */
    int                             ownID = 1;
    int                             i;
    char                            *chatMessageTypeName = NULL;
    char                            *nameServiceTypeName = NULL;
    char                            *chatterName = NULL;
    char                            *partitionName = NULL;
        
#ifdef INTEGRITY
#ifdef CHATTER_QUIT
    ownID = -1;
#else
    ownID = 1;
#endif
    chatterName = "dds_user";
#else
    /* Options: Chatter [ownID [name]] */
    if (argc > 1) {
        sscanf(argv[1], "%d", &ownID);
        if (argc > 2) {
            chatterName = argv[2];
        }
    }
#endif

    /* Create a DomainParticipantFactory and a DomainParticipant (using Default QoS settings). */
    dpf = DDS_DomainParticipantFactory_get_instance ();
    checkHandle(dpf, "DDS_DomainParticipantFactory_get_instance");
    participant = DDS_DomainParticipantFactory_create_participant (
        dpf, 
        domain, 
        DDS_PARTICIPANT_QOS_DEFAULT, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(participant, "DDS_DomainParticipantFactory_create_participant");  

    /* Register the required datatype for ChatMessage. */
    chatMessageTS = Chat_ChatMessageTypeSupport__alloc();
    checkHandle(chatMessageTS, "Chat_ChatMessageTypeSupport__alloc");
    chatMessageTypeName = Chat_ChatMessageTypeSupport_get_type_name(chatMessageTS);
    status = Chat_ChatMessageTypeSupport_register_type(
        chatMessageTS, 
        participant, 
        chatMessageTypeName);
    checkStatus(status, "Chat_ChatMessageTypeSupport_register_type");
    
    /* Register the required datatype for NameService. */
    nameServiceTS = Chat_NameServiceTypeSupport__alloc();
    checkHandle(nameServiceTS, "Chat_NameServiceTypeSupport__alloc");
    nameServiceTypeName = Chat_NameServiceTypeSupport_get_type_name(nameServiceTS);
    status = Chat_NameServiceTypeSupport_register_type(
        nameServiceTS, 
        participant, 
        nameServiceTypeName);
    checkStatus(status, "Chat_NameServiceTypeSupport_register_type");
    
    /* Set the ReliabilityQosPolicy to RELIABLE. */
    reliable_topic_qos = DDS_TopicQos__alloc();
    checkHandle(reliable_topic_qos, "DDS_TopicQos__alloc");
    status = DDS_DomainParticipant_get_default_topic_qos(participant, reliable_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_topic_qos");
    reliable_topic_qos->reliability.kind = DDS_RELIABLE_RELIABILITY_QOS;
    
    /* Make the tailored QoS the new default. */
    status = DDS_DomainParticipant_set_default_topic_qos(participant, reliable_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_set_default_topic_qos");

    /* Use the changed policy when defining the ChatMessage topic */
    chatMessageTopic = DDS_DomainParticipant_create_topic(
        participant, 
        "Chat_ChatMessage", 
        chatMessageTypeName, 
        reliable_topic_qos, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(chatMessageTopic, "DDS_DomainParticipant_create_topic (ChatMessage)");
    
    /* Set the DurabilityQosPolicy to TRANSIENT. */
    setting_topic_qos = DDS_TopicQos__alloc();
    checkHandle(setting_topic_qos, "DDS_TopicQos__alloc");
    status = DDS_DomainParticipant_get_default_topic_qos(participant, setting_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_topic_qos");
    setting_topic_qos->durability.kind = DDS_TRANSIENT_DURABILITY_QOS;

    /* Create the NameService Topic. */
    nameServiceTopic = DDS_DomainParticipant_create_topic( 
        participant, 
        "Chat_NameService", 
        nameServiceTypeName, 
        setting_topic_qos, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(nameServiceTopic, "DDS_DomainParticipant_create_topic");

    /* Adapt the default PublisherQos to write into the "ChatRoom" Partition. */
    partitionName = "ChatRoom";
    pub_qos = DDS_PublisherQos__alloc();
    checkHandle(pub_qos, "DDS_PublisherQos__alloc");
    status = DDS_DomainParticipant_get_default_publisher_qos (participant, pub_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_publisher_qos");
    pub_qos->partition.name._length = 1;
    pub_qos->partition.name._maximum = 1;
    pub_qos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    checkHandle(pub_qos->partition.name._buffer, "DDS_StringSeq_allocbuf");
    pub_qos->partition.name._buffer[0] = DDS_string_alloc ( strlen(partitionName) );
    checkHandle(pub_qos->partition.name._buffer[0], "DDS_string_alloc");
    strcpy (pub_qos->partition.name._buffer[0], partitionName);

    /* Create a Publisher for the chatter application. */
    chatPublisher = DDS_DomainParticipant_create_publisher(participant, pub_qos, NULL, DDS_STATUS_MASK_NONE);
    checkHandle(chatPublisher, "DDS_DomainParticipant_create_publisher");
    
    /* Create a DataWriter for the ChatMessage Topic (using the appropriate QoS). */
    talker = DDS_Publisher_create_datawriter( 
        chatPublisher, 
        chatMessageTopic, 
        DDS_DATAWRITER_QOS_USE_TOPIC_QOS, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(talker, "DDS_Publisher_create_datawriter (chatMessage)");
    
    /* Create a DataWriter for the NameService Topic (using the appropriate QoS). */
    dw_qos = DDS_DataWriterQos__alloc();
    checkHandle(dw_qos, "DDS_DataWriterQos__alloc");
    status = DDS_Publisher_get_default_datawriter_qos (chatPublisher, dw_qos);
    checkStatus(status, "DDS_Publisher_get_default_datawriter_qos");
    status = DDS_Publisher_copy_from_topic_qos(chatPublisher, dw_qos, setting_topic_qos);
    checkStatus(status, "DDS_Publisher_copy_from_topic_qos");
    dw_qos->writer_data_lifecycle.autodispose_unregistered_instances = FALSE;
    nameServer = DDS_Publisher_create_datawriter( 
        chatPublisher, 
        nameServiceTopic, 
        dw_qos,
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(nameServer, "DDS_Publisher_create_datawriter (NameService)");

    /* Initialize the NameServer attributes located on stack. */
    ns.userID = ownID;
    ns.name = DDS_string_alloc(Chat_MAX_NAME+1);
    checkHandle(ns.name, "DDS_string_alloc");
    if (chatterName) {
        strncpy (ns.name, chatterName, Chat_MAX_NAME + 1);
    } else {
        snprintf(ns.name, Chat_MAX_NAME+1, "Chatter %d", ownID);
    }

    /* Write the user-information into the system (registering the instance implicitly). */
    status = Chat_NameServiceDataWriter_write(nameServer, &ns, DDS_HANDLE_NIL);
    checkStatus(status, "Chat_ChatMessageDataWriter_write");
    
    /* Initialize the chat messages on Heap. */
    msg = Chat_ChatMessage__alloc();
    checkHandle(msg, "Chat_ChatMessage__alloc");
    msg->userID = ownID;
    msg->index = 0;
    msg->content = DDS_string_alloc(MAX_MSG_LEN);
    checkHandle(msg->content, "DDS_string_alloc");
    if (ownID == TERMINATION_MESSAGE) {
        snprintf (msg->content, MAX_MSG_LEN, "Termination message.");
    } else { 
        snprintf (msg->content, MAX_MSG_LEN, "Hi there, I will send you %d more messages.", NUM_MSG);
    }
    printf("Writing message: %s\n", msg->content);

    /* Register a chat message for this user (pre-allocating resources for it!!) */
    userHandle = Chat_ChatMessageDataWriter_register_instance(talker, msg);

    /* Write a message using the pre-generated instance handle. */
    status = Chat_ChatMessageDataWriter_write(talker, msg, userHandle);
    checkStatus(status, "Chat_ChatMessageDataWriter_write");

    sleep (1); /* do not run so fast! */
 
    /* Write any number of messages, re-using the existing string-buffer: no leak!!. */
    for (i = 1; i <= NUM_MSG && ownID != TERMINATION_MESSAGE; i++) {
        msg->index = i;
        snprintf ( msg->content, MAX_MSG_LEN, "Message no. %d", msg->index);
        printf("Writing message: %s\n", msg->content);
        status = Chat_ChatMessageDataWriter_write(talker, msg, userHandle);
        checkStatus(status, "Chat_ChatMessageDataWriter_write");
        sleep (1); /* do not run so fast! */
    }

    /* Leave the room by disposing and unregistering the message instance. */
    status = Chat_ChatMessageDataWriter_dispose(talker, msg, userHandle);
    checkStatus(status, "Chat_ChatMessageDataWriter_dispose");
    status = Chat_ChatMessageDataWriter_unregister_instance(talker, msg, userHandle);
    checkStatus(status, "Chat_ChatMessageDataWriter_unregister_instance");

    /* Also unregister our name. */
    status = Chat_NameServiceDataWriter_unregister_instance(nameServer, &ns, DDS_HANDLE_NIL);
    checkStatus(status, "Chat_NameServiceDataWriter_unregister_instance");

    /* Release the data-samples. */
    DDS_free(ns.name); /* ns allocated on stack: explicit de-allocation of indirections!! */
    DDS_free(msg);     /* msg allocated on heap: implicit de-allocation of indirections!! */

    /* Remove the DataWriters */
    status = DDS_Publisher_delete_datawriter(chatPublisher, talker);
    checkStatus(status, "DDS_Publisher_delete_datawriter (talker)");
    
    status = DDS_Publisher_delete_datawriter(chatPublisher, nameServer);
    checkStatus(status, "DDS_Publisher_delete_datawriter (nameServer)");
    
    /* Remove the Publisher. */
    status = DDS_DomainParticipant_delete_publisher(participant, chatPublisher);
    checkStatus(status, "DDS_DomainParticipant_delete_publisher");
    
    /* Remove the Topics. */
    status = DDS_DomainParticipant_delete_topic(participant, nameServiceTopic);
    checkStatus(status, "DDS_DomainParticipant_delete_topic (nameServiceTopic)");
    
    status = DDS_DomainParticipant_delete_topic(participant, chatMessageTopic);
    checkStatus(status, "DDS_DomainParticipant_delete_topic (chatMessageTopic)");
    
    /* De-allocate the QoS policies. */
    DDS_free(reliable_topic_qos);
    DDS_free(setting_topic_qos);
    DDS_free(pub_qos);  /* Note that DDS_free recursively de-allocates all indirections as well!! */

    /* De-allocate the type-names and TypeSupport objects. */
    DDS_free(nameServiceTypeName);
    DDS_free(chatMessageTypeName);
    DDS_free(nameServiceTS);
    DDS_free(chatMessageTS);
    
    /* Remove the DomainParticipant. */
    status = DDS_DomainParticipantFactory_delete_participant(dpf, participant);
    checkStatus(status, "DDS_DomainParticipantFactory_delete_participant");

    printf("Completed chatter example.\n");
    fflush(stdout);
    return 0;
}
예제 #7
0
int
main (
    int argc,
    char *argv[])
{
    /* Generic DDS entities */
    DDS_DomainParticipantFactory    dpf;
    DDS_DomainParticipant           participant;
    DDS_Topic                       chatMessageTopic;
    DDS_Topic                       nameServiceTopic;
    DDS_MultiTopic                  namedMessageTopic;
    DDS_Subscriber                  chatSubscriber;

    /* Type-specific DDS entities */
    Chat_ChatMessageTypeSupport     chatMessageTS;
    Chat_NameServiceTypeSupport     nameServiceTS;
    Chat_NamedMessageTypeSupport    namedMessageTS;
    Chat_NamedMessageDataReader     chatAdmin;
    DDS_sequence_Chat_NamedMessage  *msgSeq;
    DDS_SampleInfoSeq               *infoSeq;

    /* QosPolicy holders */
    DDS_TopicQos                    *reliable_topic_qos;
    DDS_TopicQos                    *setting_topic_qos;
    DDS_SubscriberQos               *sub_qos;
    DDS_StringSeq                   *parameterList;

    /* DDS Identifiers */
    DDS_DomainId_t                  domain = NULL;
    DDS_ReturnCode_t                status;

    /* Others */
    DDS_unsigned_long               i;
    DDS_boolean                     terminated = FALSE;
    char *                          partitionName;
    char *                          chatMessageTypeName = NULL;
    char *                          nameServiceTypeName = NULL;
    char *                          namedMessageTypeName = NULL;
    
    /* Options: MessageBoard [ownID] */
    /* Messages having owner ownID will be ignored */
    parameterList = DDS_StringSeq__alloc();
    checkHandle(parameterList, "DDS_StringSeq__alloc");
    parameterList->_length = 1;
    parameterList->_maximum = 1;
    parameterList->_buffer = DDS_StringSeq_allocbuf(1);
    checkHandle(parameterList->_buffer, "DDS_StringSeq_allocbuf");
    
    if (argc > 1) {
        parameterList->_buffer[0] = DDS_string_alloc ( strlen(argv[1]) );
        checkHandle(parameterList->_buffer[0], "DDS_string_alloc");
        strcpy (parameterList->_buffer[0], argv[1]);
    }
    else
    {
        parameterList->_buffer[0] = DDS_string_alloc(1);
        checkHandle(parameterList->_buffer[0], "DDS_string_alloc");
        strcpy (parameterList->_buffer[0], "0");
    }
      
    /* Create a DomainParticipantFactory and a DomainParticipant (using Default QoS settings. */
    dpf = DDS_DomainParticipantFactory_get_instance ();
    checkHandle(dpf, "DDS_DomainParticipantFactory_get_instance");
    participant = DDS_DomainParticipantFactory_create_participant (
        dpf, 
        domain, 
        DDS_PARTICIPANT_QOS_DEFAULT, 
        NULL, 
        DDS_STATUS_MASK_NONE);
    checkHandle(participant, "DDS_DomainParticipantFactory_create_participant");  

    /* Register the required datatype for ChatMessage. */
    chatMessageTS = Chat_ChatMessageTypeSupport__alloc();
    checkHandle(chatMessageTS, "Chat_ChatMessageTypeSupport__alloc");
    chatMessageTypeName = Chat_ChatMessageTypeSupport_get_type_name(chatMessageTS);
    status = Chat_ChatMessageTypeSupport_register_type(
        chatMessageTS, 
        participant, 
        chatMessageTypeName);
    checkStatus(status, "Chat_ChatMessageTypeSupport_register_type");
    
    /* Register the required datatype for NameService. */
    nameServiceTS = Chat_NameServiceTypeSupport__alloc();
    checkHandle(nameServiceTS, "Chat_NameServiceTypeSupport__alloc");
    nameServiceTypeName = Chat_NameServiceTypeSupport_get_type_name(nameServiceTS);
    status = Chat_NameServiceTypeSupport_register_type(
        nameServiceTS, 
        participant, 
        nameServiceTypeName);
    checkStatus(status, "Chat_NameServiceTypeSupport_register_type");
    
    /* Register the required datatype for NamedMessage. */
    namedMessageTS = Chat_NamedMessageTypeSupport__alloc();
    checkHandle(namedMessageTS, "Chat_NamedMessageTypeSupport__alloc");
    namedMessageTypeName = Chat_NamedMessageTypeSupport_get_type_name(namedMessageTS);
    status = Chat_NamedMessageTypeSupport_register_type(
        namedMessageTS, 
        participant, 
        namedMessageTypeName);
    checkStatus(status, "Chat_NamedMessageTypeSupport_register_type");
    
    /* Set the ReliabilityQosPolicy to RELIABLE. */
    reliable_topic_qos = DDS_TopicQos__alloc();
    checkHandle(reliable_topic_qos, "DDS_TopicQos__alloc");
    status = DDS_DomainParticipant_get_default_topic_qos(participant, reliable_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_topic_qos");
    reliable_topic_qos->reliability.kind = DDS_RELIABLE_RELIABILITY_QOS;
    
    /* Make the tailored QoS the new default. */
    status = DDS_DomainParticipant_set_default_topic_qos(participant, reliable_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_set_default_topic_qos");

    /* Use the changed policy when defining the ChatMessage topic */
    chatMessageTopic = DDS_DomainParticipant_create_topic( 
        participant, 
        "Chat_ChatMessage", 
        chatMessageTypeName, 
        reliable_topic_qos, 
        NULL, 
        DDS_STATUS_MASK_NONE);
    checkHandle(chatMessageTopic, "DDS_DomainParticipant_create_topic (ChatMessage)");
    
    /* Set the DurabilityQosPolicy to TRANSIENT. */
    setting_topic_qos = DDS_TopicQos__alloc();
    checkHandle(setting_topic_qos, "DDS_TopicQos__alloc");
    status = DDS_DomainParticipant_get_default_topic_qos(participant, setting_topic_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_topic_qos");
    setting_topic_qos->durability.kind = DDS_TRANSIENT_DURABILITY_QOS;

    /* Create the NameService Topic. */
    nameServiceTopic = DDS_DomainParticipant_create_topic( 
        participant, 
        "Chat_NameService", 
        nameServiceTypeName, 
        setting_topic_qos, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(nameServiceTopic, "DDS_DomainParticipant_create_topic");
    
    /* Create a multitopic that substitutes the userID with its corresponding userName. */
    namedMessageTopic = DDS_DomainParticipant_create_simulated_multitopic(
        participant, 
        "Chat_NamedMessage", 
        namedMessageTypeName, 
        "SELECT userID, name AS userName, index, content "
            "FROM Chat_NameService NATURAL JOIN Chat_ChatMessage WHERE userID <> %0",
        parameterList);
    checkHandle(namedMessageTopic, "DDS_DomainParticipant_simulate_multitopic");

    /* Adapt the default SubscriberQos to read from the "ChatRoom" Partition. */
    partitionName = "ChatRoom";
    sub_qos = DDS_SubscriberQos__alloc();
    checkHandle(sub_qos, "DDS_SubscriberQos__alloc");
    status = DDS_DomainParticipant_get_default_subscriber_qos (participant, sub_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_subscriber_qos");
    sub_qos->partition.name._length = 1;
    sub_qos->partition.name._maximum = 1;
    sub_qos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    checkHandle(sub_qos->partition.name._buffer, "DDS_StringSeq_allocbuf");
    sub_qos->partition.name._buffer[0] = DDS_string_alloc ( strlen(partitionName) );
    checkHandle(sub_qos->partition.name._buffer[0], "DDS_string_alloc");
    strcpy (sub_qos->partition.name._buffer[0], partitionName);

    /* Create a Subscriber for the MessageBoard application. */
    chatSubscriber = DDS_DomainParticipant_create_subscriber(participant, sub_qos, NULL, DDS_STATUS_MASK_NONE);
    checkHandle(chatSubscriber, "DDS_DomainParticipant_create_subscriber");
    
    /* Create a DataReader for the NamedMessage Topic (using the appropriate QoS). */
    chatAdmin = DDS_Subscriber_create_datareader( 
        chatSubscriber, 
        namedMessageTopic, 
        DDS_DATAREADER_QOS_USE_TOPIC_QOS, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(chatAdmin, "DDS_Subscriber_create_datareader");
    
    /* Print a message that the MessageBoard has opened. */
    printf("MessageBoard has opened: send a ChatMessage with userID = -1 to close it....\n\n");

    /* Allocate the sequence holders for the DataReader */
    msgSeq = DDS_sequence_Chat_NamedMessage__alloc();
    checkHandle(msgSeq, "DDS_sequence_Chat_NamedMessage__alloc");
    infoSeq = DDS_SampleInfoSeq__alloc();
    checkHandle(infoSeq, "DDS_SampleInfoSeq__alloc");

    while (!terminated) {
        /* Note: using read does not remove the samples from 
           unregistered instances from the DataReader. This means 
           that the DataRase would use more and more resources. 
           That's why we use take here instead. */

        status = Chat_NamedMessageDataReader_take( 
            chatAdmin, 
            msgSeq, 
            infoSeq, 
            DDS_LENGTH_UNLIMITED, 
            DDS_ANY_SAMPLE_STATE, 
            DDS_ANY_VIEW_STATE, 
            DDS_ALIVE_INSTANCE_STATE );
        checkStatus(status, "Chat_NamedMessageDataReader_take");

        for (i = 0; i < msgSeq->_length; i++) {
            Chat_NamedMessage *msg = &(msgSeq->_buffer[i]);
            if (msg->userID == TERMINATION_MESSAGE) {
                printf("Termination message received: exiting...\n");
                terminated = TRUE;
            } else {
                printf ("%s: %s\n", msg->userName, msg->content);
            }
        }

        status = Chat_NamedMessageDataReader_return_loan(chatAdmin, msgSeq, infoSeq);
        checkStatus(status, "Chat_ChatMessageDataReader_return_loan");
        
        /* Sleep for some amount of time, as not to consume too much CPU cycles. */
        Sleep(100);
    }

    /* Remove the DataReader */
    status = DDS_Subscriber_delete_datareader(chatSubscriber, chatAdmin);
    checkStatus(status, "DDS_Subscriber_delete_datareader");
    
    /* Remove the Subscriber. */
    status = DDS_DomainParticipant_delete_subscriber(participant, chatSubscriber);
    checkStatus(status, "DDS_DomainParticipant_delete_subscriber");
    
    /* Remove the Topics. */
    status = DDS_DomainParticipant_delete_simulated_multitopic(participant, namedMessageTopic);
    checkStatus(status, "DDS_DomainParticipant_delete_simulated_multitopic");
    
    status = DDS_DomainParticipant_delete_topic(participant, nameServiceTopic);
    checkStatus(status, "DDS_DomainParticipant_delete_topic (nameServiceTopic)");
    
    status = DDS_DomainParticipant_delete_topic(participant, chatMessageTopic);
    checkStatus(status, "DDS_DomainParticipant_delete_topic (chatMessageTopic)");
    
    /* De-allocate the QoS policies. */
    DDS_free(reliable_topic_qos);
    DDS_free(setting_topic_qos);
    DDS_free(sub_qos);  // Note that DDS_free recursively de-allocates all indirections as well!!

    /* De-allocate the type-names and TypeSupport objects. */
    DDS_free(namedMessageTypeName);
    DDS_free(nameServiceTypeName);
    DDS_free(chatMessageTypeName);
    DDS_free(namedMessageTS);
    DDS_free(nameServiceTS);
    DDS_free(chatMessageTS);
    
    /* Remove the DomainParticipant. */
    status = DDS_DomainParticipantFactory_delete_participant(dpf, participant);
    checkStatus(status, "DDS_DomainParticipantFactory_delete_participant");

    return 0;
}
예제 #8
0
DDS_MultiTopic
DDS_DomainParticipant_create_simulated_multitopic (
    DDS_DomainParticipant participant,
    const DDS_char *name,
    const DDS_char *type_name,
    const DDS_char *subscription_expression,
    const DDS_StringSeq *expression_parameters )
{
    /* Type-specific DDS entities */
    static Chat_ChatMessageDataReader       chatMessageDR;
    static Chat_NameServiceDataReader       nameServiceDR;
    static Chat_NamedMessageDataWriter      namedMessageDW;
    
    /* Query related stuff */
    static DDS_QueryCondition               nameFinder;
    static DDS_StringSeq                    *nameFinderParams;
    
    /* QosPolicy holders */
    DDS_TopicQos                    *namedMessageQos;
    DDS_SubscriberQos               *sub_qos;    
    DDS_PublisherQos                *pub_qos;

    /* Others */
    const char                      *partitionName = "ChatRoom";
    const char                      *nameFinderExpr;
    struct MsgListenerState         *listener_state;
    DDS_Duration_t                  infiniteTimeOut  = DDS_DURATION_INFINITE;
    DDS_ReturnCode_t                status;

    /* Lookup both components that constitute the multi-topic. */
    chatMessageTopic = DDS_DomainParticipant_find_topic(
        participant, 
        "Chat_ChatMessage", 
        &infiniteTimeOut);
    checkHandle(chatMessageTopic, "DDS_DomainParticipant_find_topic (Chat_ChatMessage)");

    nameServiceTopic = DDS_DomainParticipant_find_topic(
        participant, 
        "Chat_NameService", 
        &infiniteTimeOut);
    checkHandle(nameServiceTopic, "DDS_DomainParticipant_find_topic (Chat_NameService)");

    /* Create a ContentFilteredTopic to filter out our own ChatMessages. */
    filteredMessageTopic = DDS_DomainParticipant_create_contentfilteredtopic(
        participant, 
        "Chat_FilteredMessage", 
        chatMessageTopic,
        "userID <> %0",
        expression_parameters);
    checkHandle(filteredMessageTopic, "DDS_DomainParticipant_create_contentfilteredtopic");
        

    /* Adapt the default SubscriberQos to read from the "ChatRoom" Partition. */
    sub_qos = DDS_SubscriberQos__alloc();
    checkHandle(sub_qos, "DDS_SubscriberQos__alloc");
    status = DDS_DomainParticipant_get_default_subscriber_qos (participant, sub_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_subscriber_qos");
    sub_qos->partition.name._length = 1;
    sub_qos->partition.name._maximum = 1;
    sub_qos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    checkHandle(sub_qos->partition.name._buffer, "DDS_StringSeq_allocbuf");
    sub_qos->partition.name._buffer[0] = DDS_string_alloc ( strlen(partitionName) );
    checkHandle(sub_qos->partition.name._buffer[0], "DDS_string_alloc");
    strcpy (sub_qos->partition.name._buffer[0], partitionName);

    /* Create a private Subscriber for the multitopic simulator. */
    multiSub = DDS_DomainParticipant_create_subscriber(participant, sub_qos, NULL, DDS_STATUS_MASK_NONE);
    checkHandle(multiSub, "DDS_DomainParticipant_create_subscriber (for multitopic)");
    
    /* Create a DataReader for the FilteredMessage Topic (using the appropriate QoS). */
    chatMessageDR = DDS_Subscriber_create_datareader( 
        multiSub, 
        filteredMessageTopic, 
        DDS_DATAREADER_QOS_USE_TOPIC_QOS, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(chatMessageDR, "DDS_Subscriber_create_datareader (ChatMessage)");
    
    /* Create a DataReader for the nameService Topic (using the appropriate QoS). */
    nameServiceDR = DDS_Subscriber_create_datareader( 
        multiSub, 
        nameServiceTopic, 
        DDS_DATAREADER_QOS_USE_TOPIC_QOS, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(nameServiceDR, "DDS_Subscriber_create_datareader (NameService)");
    
    /* Define the SQL expression (using a parameterized value). */
    nameFinderExpr = "userID = %0";
    
    /* Allocate and assign the query parameters. */
    nameFinderParams = DDS_StringSeq__alloc();
    checkHandle(nameFinderParams, "DDS_StringSeq__alloc");
    nameFinderParams->_length = 1;
    nameFinderParams->_maximum = 1;
    nameFinderParams->_buffer = DDS_StringSeq_allocbuf (1);
    checkHandle(nameFinderParams->_buffer, "DDS_StringSeq_allocbuf");
    nameFinderParams->_buffer[0] = DDS_string_alloc ( MAX_INT_LENGTH  );
    checkHandle(nameFinderParams->_buffer[0], "DDS_string_alloc");
    strcpy(nameFinderParams->_buffer[0], "0");
    DDS_sequence_set_release(nameFinderParams, TRUE);

    /* Create a QueryCondition to only read corresponding nameService information by key-value. */
    nameFinder = DDS_DataReader_create_querycondition( 
        nameServiceDR, 
        DDS_ANY_SAMPLE_STATE, 
        DDS_ANY_VIEW_STATE, 
        DDS_ANY_INSTANCE_STATE,
        nameFinderExpr, 
        nameFinderParams);
    checkHandle(nameFinder, "DDS_DataReader_create_querycondition (nameFinder)");
    
    /* Create the Topic that simulates the multi-topic (use Qos from chatMessage).*/
    namedMessageQos = DDS_TopicQos__alloc();
    checkHandle(namedMessageQos, "DDS_TopicQos__alloc");
    status = DDS_Topic_get_qos(chatMessageTopic, namedMessageQos);
    checkStatus(status, "DDS_Topic_get_qos");
    
    /* Create the NamedMessage Topic whose samples simulate the MultiTopic */
    namedMessageTopic = DDS_DomainParticipant_create_topic( 
        participant, 
        "Chat_NamedMessage", 
        type_name, 
        namedMessageQos, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(namedMessageTopic, "DDS_DomainParticipant_create_topic (NamedMessage)");
    
    /* Adapt the default PublisherQos to write into the "ChatRoom" Partition. */
    pub_qos = DDS_PublisherQos__alloc();
    checkHandle(pub_qos, "DDS_PublisherQos__alloc");
    status = DDS_DomainParticipant_get_default_publisher_qos (participant, pub_qos);
    checkStatus(status, "DDS_DomainParticipant_get_default_publisher_qos");
    pub_qos->partition.name._length = 1;
    pub_qos->partition.name._maximum = 1;
    pub_qos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    checkHandle(pub_qos->partition.name._buffer, "DDS_StringSeq_allocbuf");
    pub_qos->partition.name._buffer[0] = DDS_string_alloc ( strlen(partitionName) );
    checkHandle(pub_qos->partition.name._buffer[0], "DDS_string_alloc");
    strcpy (pub_qos->partition.name._buffer[0], partitionName);

    /* Create a private Publisher for the multitopic simulator. */
    multiPub = DDS_DomainParticipant_create_publisher(participant, pub_qos, NULL, DDS_STATUS_MASK_NONE);
    checkHandle(multiPub, "DDS_DomainParticipant_create_publisher (for multitopic)");
    
    /* Create a DataWriter for the multitopic. */
    namedMessageDW = DDS_Publisher_create_datawriter( 
        multiPub, 
        namedMessageTopic, 
        DDS_DATAWRITER_QOS_USE_TOPIC_QOS, 
        NULL,
        DDS_STATUS_MASK_NONE);
    checkHandle(namedMessageDW, "DDS_Publisher_create_datawriter (NamedMessage)");

    /* Allocate the DataReaderListener interface. */
    msgListener = DDS_DataReaderListener__alloc();
    checkHandle(msgListener, "DDS_DataReaderListener__alloc");

    /* Fill the listener_data with pointers to all entities needed by the Listener implementation. */
    listener_state = malloc(sizeof(struct MsgListenerState));
    checkHandle(listener_state, "malloc");
    listener_state->chatMessageDR = chatMessageDR;
    listener_state->nameServiceDR = nameServiceDR;
    listener_state->namedMessageDW = namedMessageDW;
    listener_state->nameFinder = nameFinder;
    listener_state->nameFinderParams = nameFinderParams;
    msgListener->listener_data = listener_state;

    /* Assign the function pointer attributes to their implementation functions. */
    msgListener->on_data_available = (void (*)(void *, DDS_DataReader)) on_message_available;
    msgListener->on_requested_deadline_missed = NULL;
    msgListener->on_requested_incompatible_qos = NULL;
    msgListener->on_sample_rejected = NULL;
    msgListener->on_liveliness_changed = NULL;
    msgListener->on_subscription_matched = NULL;
    msgListener->on_sample_lost = NULL;
    
    /* Attach the DataReaderListener to the DataReader, only enabling the data_available event. */
    status = DDS_DataReader_set_listener(chatMessageDR, msgListener, DDS_DATA_AVAILABLE_STATUS);
    checkStatus(status, "DDS_DataReader_set_listener");
    
    /* Free up all resources that are no longer needed. */
    DDS_free(namedMessageQos);
    DDS_free(sub_qos);
    DDS_free(pub_qos);
    
    /* Return the simulated Multitopic. */
    return namedMessageTopic;
}
예제 #9
0
파일: ping.c 프로젝트: S73417H/opensplice
int OSPL_MAIN (int argc, char ** argv)
#endif
{
    DDS_ConditionSeq                        *conditionList;
    DDS_WaitSet                              w;

    DDS_DomainParticipantQos                 *dpQos;
    DDS_TopicQos                             *tQos;
    DDS_PublisherQos                         *pQos;
    DDS_DataWriterQos                        *dwQos;
    DDS_SubscriberQos                        *sQos;
    DDS_DataReaderQos                        *drQos;

    DDS_Condition                            exp_condition = NULL;
    pong_handler                            *active_handler = NULL;
    DDS_Duration_t                           wait_timeout = {3,0};

    DDS_boolean                              finish_flag = FALSE;
    DDS_boolean                              timeout_flag = FALSE;
    DDS_boolean                              terminate = FALSE;
    DDS_ReturnCode_t                         result;

    int                                      imax = 1;
    int                                      i;
    unsigned int                             block;

    printf ("Starting ping example\n");
    fflush(stdout);

    /*
     * init timing statistics
     */
    init_stats (&roundtrip,    "round_trip");
    init_stats (&write_access, "write_access");
    init_stats (&read_access,  "read_access");

    /*
     * Evaluate cmdline arguments
     */
#ifdef INTEGRITY
    nof_blocks = 100;
    nof_cycles = 100;
#if defined (PING1)
    topic_id = 'm';
#elif defined (PING2)
    topic_id = 'q';
#elif defined (PING3)
    topic_id = 's';
#elif defined (PING4)
    topic_id = 'f';
#elif defined (PING5)
    topic_id = 'b';
#elif defined (PING6)
    nof_blocks = 1;
    nof_cycles = 10;
    topic_id = 't';
#endif
    write_partition = "PongRead";
    read_partition = "PongWrite";
#else
    if (argc != 1) {
    if (argc != 6) {
            printf ("Invalid.....\n Usage: %s [blocks blocksize topic_id WRITE_PARTITION READ_PARTITION]\n", argv[0]);
            exit (1);
        }
        nof_blocks      = atoi (argv[1]);
        nof_cycles      = atoi (argv[2]);
        topic_id        = argv[3][0];
        write_partition = argv[4];
        read_partition  = argv[5];
    }
#endif

#ifdef _WIN32
     init_clock();
#endif

    /*
     * Create WaitSet
     */
    w     = DDS_WaitSet__alloc ();
    /*
     * Initialize Qos variables
     */
    dpQos = DDS_DomainParticipantQos__alloc();
    tQos  = DDS_TopicQos__alloc();
    pQos  = DDS_PublisherQos__alloc();
    dwQos = DDS_DataWriterQos__alloc();
    sQos  = DDS_SubscriberQos__alloc();
    drQos = DDS_DataReaderQos__alloc();
    /*
     * Initialize condition list
     */
    conditionList = NULL;

    /*
     * Create participant
     */
    dpf = DDS_DomainParticipantFactory_get_instance ();
    dp = DDS_DomainParticipantFactory_create_participant (dpf, myDomain, DDS_PARTICIPANT_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);
    if (dp == DDS_HANDLE_NIL) {
        printf ("%s PING: ERROR - Splice Daemon not running", argv[0]);
        exit (1);
    }

    /*
     * Create PING publisher
     */
    DDS_DomainParticipant_get_default_publisher_qos (dp, pQos);
    pQos->partition.name._length = 1;
    pQos->partition.name._maximum = 1;
    pQos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    pQos->partition.name._buffer[0] = DDS_string_dup (write_partition);
    p = DDS_DomainParticipant_create_publisher (dp, pQos, NULL, DDS_STATUS_MASK_NONE);
    DDS_free (pQos);

    /*
     * Create PONG subscriber
     */
    DDS_DomainParticipant_get_default_subscriber_qos (dp, sQos);
    sQos->partition.name._length = 1;
    sQos->partition.name._maximum = 1;
    sQos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    sQos->partition.name._buffer[0] = DDS_string_dup (read_partition);
    s = DDS_DomainParticipant_create_subscriber (dp, sQos, NULL, DDS_STATUS_MASK_NONE);
    DDS_free (sQos);

    /*
     * PP_min_msg
     */

    /*  Create Topic */
    PP_min_dt = pingpong_PP_min_msgTypeSupport__alloc ();
    pingpong_PP_min_msgTypeSupport_register_type (PP_min_dt, dp, "pingpong::PP_min_msg");
    PP_min_topic = DDS_DomainParticipant_create_topic (dp, "PP_min_topic", "pingpong::PP_min_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    DDS_Publisher_get_default_datawriter_qos(p, dwQos);
    dwQos->reliability.kind = DDS_BEST_EFFORT_RELIABILITY_QOS;
    dwQos->history.kind = DDS_KEEP_ALL_HISTORY_QOS;

    /* Create datawriter */
    PP_min_writer = DDS_Publisher_create_datawriter (p, PP_min_topic, dwQos, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_min_reader = DDS_Subscriber_create_datareader (s, PP_min_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_min_sc = DDS_DataReader_get_statuscondition (PP_min_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_min_sc, DDS_DATA_AVAILABLE_STATUS);
    DDS_WaitSet_attach_condition (w, PP_min_sc);

    /*
     * PP_seq_msg
     */

    /*  Create Topic */
    PP_seq_dt = pingpong_PP_seq_msgTypeSupport__alloc ();
    pingpong_PP_seq_msgTypeSupport_register_type (PP_seq_dt, dp, "pingpong::PP_seq_msg");
    PP_seq_topic = DDS_DomainParticipant_create_topic (dp, "PP_seq_topic", "pingpong::PP_seq_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_seq_writer = DDS_Publisher_create_datawriter (p, PP_seq_topic, dwQos, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_seq_reader = DDS_Subscriber_create_datareader (s, PP_seq_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_seq_sc = DDS_DataReader_get_statuscondition (PP_seq_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_seq_sc, DDS_DATA_AVAILABLE_STATUS);
    DDS_WaitSet_attach_condition (w, PP_seq_sc);

    /*
     * PP_string_msg
     */

    /*  Create Topic */
    PP_string_dt = pingpong_PP_string_msgTypeSupport__alloc ();
    pingpong_PP_string_msgTypeSupport_register_type (PP_string_dt, dp, "pingpong::PP_string_msg");
    PP_string_topic = DDS_DomainParticipant_create_topic (dp, "PP_string_topic", "pingpong::PP_string_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_string_writer = DDS_Publisher_create_datawriter (p, PP_string_topic, dwQos, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_string_reader = DDS_Subscriber_create_datareader (s, PP_string_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_string_sc = DDS_DataReader_get_statuscondition (PP_string_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_string_sc, DDS_DATA_AVAILABLE_STATUS);
    DDS_WaitSet_attach_condition (w, PP_string_sc);

    /*
     * PP_fixed_msg
     */

    /*  Create Topic */
    PP_fixed_dt = pingpong_PP_fixed_msgTypeSupport__alloc ();
    pingpong_PP_fixed_msgTypeSupport_register_type (PP_fixed_dt, dp, "pingpong::PP_fixed_msg");
    PP_fixed_topic = DDS_DomainParticipant_create_topic (dp, "PP_fixed_topic", "pingpong::PP_fixed_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_fixed_writer = DDS_Publisher_create_datawriter (p, PP_fixed_topic, dwQos, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_fixed_reader = DDS_Subscriber_create_datareader (s, PP_fixed_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_fixed_sc = DDS_DataReader_get_statuscondition (PP_fixed_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_fixed_sc, DDS_DATA_AVAILABLE_STATUS);
    DDS_WaitSet_attach_condition (w, PP_fixed_sc);

    /*
     * PP_array_msg
     */

    /*  Create Topic */
    PP_array_dt = pingpong_PP_array_msgTypeSupport__alloc ();
    pingpong_PP_array_msgTypeSupport_register_type (PP_array_dt, dp, "pingpong::PP_array_msg");
    PP_array_topic = DDS_DomainParticipant_create_topic (dp, "PP_array_topic", "pingpong::PP_array_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_array_writer = DDS_Publisher_create_datawriter (p, PP_array_topic, dwQos, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_array_reader = DDS_Subscriber_create_datareader (s, PP_array_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_array_sc = DDS_DataReader_get_statuscondition (PP_array_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_array_sc, DDS_DATA_AVAILABLE_STATUS);
    DDS_WaitSet_attach_condition (w, PP_array_sc);


    /*
     * PP_bseq_msg
     */

    /*  Create Topic */
    PP_bseq_dt = pingpong_PP_bseq_msgTypeSupport__alloc ();
    pingpong_PP_bseq_msgTypeSupport_register_type (PP_bseq_dt, dp, "pingpong::PP_bseq_msg");
    PP_bseq_topic = DDS_DomainParticipant_create_topic (dp, "PP_bseq_topic", "pingpong::PP_bseq_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_bseq_writer = DDS_Publisher_create_datawriter (p, PP_bseq_topic, dwQos, NULL, DDS_STATUS_MASK_NONE);

    /* Create datareader */
    PP_bseq_reader = DDS_Subscriber_create_datareader (s, PP_bseq_topic, DDS_DATAREADER_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Add datareader statuscondition to waitset */
    PP_bseq_sc = DDS_DataReader_get_statuscondition (PP_bseq_reader);
    DDS_StatusCondition_set_enabled_statuses (PP_bseq_sc, DDS_DATA_AVAILABLE_STATUS);
    DDS_WaitSet_attach_condition (w, PP_bseq_sc);

    /*
     * PP_quit_msg
     */

    /*  Create Topic */
    PP_quit_dt = pingpong_PP_quit_msgTypeSupport__alloc ();
    pingpong_PP_quit_msgTypeSupport_register_type (PP_quit_dt, dp, "pingpong::PP_quit_msg");
    PP_quit_topic = DDS_DomainParticipant_create_topic (dp, "PP_quit_topic", "pingpong::PP_quit_msg", DDS_TOPIC_QOS_DEFAULT, NULL, DDS_STATUS_MASK_NONE);

    /* Create datawriter */
    PP_quit_writer = DDS_Publisher_create_datawriter (p, PP_quit_topic, dwQos, NULL, DDS_STATUS_MASK_NONE);

    /* Fr: workarround for ticket dds1712 */
    conditionList = DDS_ConditionSeq__alloc();
    assert(conditionList);
    DDS_WaitSet_wait (w, conditionList, &wait_timeout);
    DDS_free(conditionList);

    for (block = 0; block < nof_blocks && !terminate ; block++) {
        while (!finish_flag) {
            /*
             * Send Initial message
             */
            timeout_flag = FALSE;

            switch(topic_id) {
                case 'm':
                    {
                        /* printf ("PING: sending initial ping_min\n"); */
                        pingpong_PP_min_msg *PPdata = pingpong_PP_min_msg__alloc ();
                        exp_condition = PP_min_sc;
                        active_handler = &PP_min_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        preWriteTime = timeGet ();
                        pingpong_PP_min_msgDataWriter_write (PP_min_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 'q':
                    {
                        /* printf ("PING: sending initial ping_seq\n"); */
                        pingpong_PP_seq_msg *PPdata = pingpong_PP_seq_msg__alloc ();
                        exp_condition = PP_seq_sc;
                        active_handler = &PP_seq_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        {
                            int i = 0;
                            PPdata->payload._buffer = pingpong_seq_char_allocbuf(SEQ_PAYLOAD_SIZE);
                            PPdata->payload._length = SEQ_PAYLOAD_SIZE;
                            PPdata->payload._maximum = SEQ_PAYLOAD_SIZE;
                            for (i=0; i<SEQ_PAYLOAD_SIZE; i++) {
                                PPdata->payload._buffer[i] = (char)i;
                            }
                        }
                        preWriteTime = timeGet ();
                        pingpong_PP_seq_msgDataWriter_write (PP_seq_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 's':
                    {
                        /* printf ("PING: sending initial ping_string\n"); */
                        pingpong_PP_string_msg *PPdata = pingpong_PP_string_msg__alloc ();
                        exp_condition = PP_string_sc;
                        active_handler = &PP_string_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        PPdata->a_string = DDS_string_dup ("a_string");
                        preWriteTime = timeGet ();
                        pingpong_PP_string_msgDataWriter_write (PP_string_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 'f':
                    {
                        /* printf ("PING: sending initial ping_fixed\n"); */
                        pingpong_PP_fixed_msg *PPdata = pingpong_PP_fixed_msg__alloc ();
                        exp_condition = PP_fixed_sc;
                        active_handler = &PP_fixed_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        PPdata->a_bstring = DDS_string_dup ("a_bstring");
                        preWriteTime = timeGet ();
                        pingpong_PP_fixed_msgDataWriter_write (PP_fixed_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 'a':
                    {
                        /* printf ("PING: sending initial ping_array\n"); */
                        pingpong_PP_array_msg *PPdata = pingpong_PP_array_msg__alloc ();
                        exp_condition = PP_array_sc;
                        active_handler = &PP_array_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        preWriteTime = timeGet ();
                        pingpong_PP_array_msgDataWriter_write (PP_array_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 'b':
                    {
                        /* printf ("PING: sending initial ping_bseq_msg\n"); */
                        pingpong_PP_bseq_msg *PPdata = pingpong_PP_bseq_msg__alloc ();
                        exp_condition = PP_bseq_sc;
                        active_handler = &PP_bseq_handler;
                        PPdata->count = 0;
                        PPdata->block = block;
                        preWriteTime = timeGet ();
                        pingpong_PP_bseq_msgDataWriter_write (PP_bseq_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        DDS_free (PPdata);
                    }
                    break;
                case 't':
                    {
                        /* printf ("PING: sending initial ping_quit\n"); */
                        pingpong_PP_quit_msg *PPdata = pingpong_PP_quit_msg__alloc();
                        PPdata->quit = TRUE;
                        terminate = TRUE;
                        finish_flag = TRUE;
                        sleep(1);
                        preWriteTime = timeGet ();
                        pingpong_PP_quit_msgDataWriter_write (PP_quit_writer, PPdata, DDS_HANDLE_NIL);
                        postWriteTime = timeGet ();
                        sleep(1);
                        DDS_free (PPdata);
                    }
                    break;
                default:
                    printf("Invalid topic-id\n");
                    exit(1);
            }

            if (!terminate) {
                roundTripTime = preWriteTime;
                add_stats (&write_access, 1E6 * timeToReal (timeSub (postWriteTime, preWriteTime)));

                /*
                 * Wait for response, calculate timing, and send another data if not ready
                 */
                while (!(timeout_flag || finish_flag)) {
                    conditionList = DDS_ConditionSeq__alloc();
                    result = DDS_WaitSet_wait (w, conditionList, &wait_timeout);
                    if(result == DDS_RETCODE_OK || result == DDS_RETCODE_NO_DATA || result == DDS_RETCODE_TIMEOUT)
                    {
                        if (conditionList) {
                            imax = conditionList->_length;
                            if (imax != 0) {
                                for (i = 0; i < imax; i++) {
                                    if (conditionList->_buffer[i] == exp_condition) {
                                        finish_flag = active_handler (nof_cycles);
                                    } else {
                                        printf ("PING: unexpected condition triggered: %lx\n",
                                            (unsigned long)conditionList->_buffer[i]);
                                    }
                                }
                            } else {
                                printf ("PING: TIMEOUT - message lost\n");
                                timeout_flag = TRUE;
                            }
                            DDS_free(conditionList);
                        } else {
                            printf ("PING: TIMEOUT - message lost\n");
                            timeout_flag = TRUE;
                        }
                    } else
                    {
                        printf ("PING: Waitset wait failed (code %d), terminating.\n", result);
                        finish_flag = TRUE;
                        terminate = TRUE;
                    }
                }
            }
        }
        if (!terminate) {
            finish_flag = FALSE;
            if (block == 0) {
                printf ("# PING PONG measurements (in us) \n");
                printf ("#           Roundtrip time [us]             Write-access time [us]          Read-access time [us]\n");
                printf ("# Block     Count   mean    min    max      Count   mean    min    max      Count   mean    min    max\n");
            }
            printf ("%6d %10d %6.0f %6.0f %6.0f %10d %6.0f %6.0f %6.0f %10d %6.0f %6.0f %6.0f\n",
                block,
                roundtrip.count,
                roundtrip.average,
                roundtrip.min,
                roundtrip.max,
                write_access.count,
                write_access.average,
                write_access.min,
                write_access.max,
                read_access.count,
                read_access.average,
                read_access.min,
                read_access.max);
            fflush (stdout);
            init_stats (&write_access, "write_access");
            init_stats (&read_access,  "read_access");
            init_stats (&roundtrip,    "round_trip");
        }
    }
    DDS_Subscriber_delete_datareader (s, PP_min_reader);
    DDS_Publisher_delete_datawriter (p, PP_min_writer);
    DDS_Subscriber_delete_datareader (s, PP_seq_reader);
    DDS_Publisher_delete_datawriter (p, PP_seq_writer);
    DDS_Subscriber_delete_datareader (s, PP_string_reader);
    DDS_Publisher_delete_datawriter (p, PP_string_writer);
    DDS_Subscriber_delete_datareader (s, PP_fixed_reader);
    DDS_Publisher_delete_datawriter (p, PP_fixed_writer);
    DDS_Subscriber_delete_datareader (s, PP_array_reader);
    DDS_Publisher_delete_datawriter (p, PP_array_writer);
    DDS_Subscriber_delete_datareader (s, PP_bseq_reader);
    DDS_Publisher_delete_datawriter (p, PP_bseq_writer);
    DDS_Publisher_delete_datawriter (p, PP_quit_writer);
    DDS_DomainParticipant_delete_subscriber (dp, s);
    DDS_DomainParticipant_delete_publisher (dp, p);
    DDS_DomainParticipant_delete_topic (dp, PP_min_topic);
    DDS_DomainParticipant_delete_topic (dp, PP_seq_topic);
    DDS_DomainParticipant_delete_topic (dp, PP_string_topic);
    DDS_DomainParticipant_delete_topic (dp, PP_fixed_topic);
    DDS_DomainParticipant_delete_topic (dp, PP_array_topic);
    DDS_DomainParticipant_delete_topic (dp, PP_bseq_topic);
    DDS_DomainParticipant_delete_topic (dp, PP_quit_topic);
    DDS_DomainParticipantFactory_delete_participant (dpf, dp);
    DDS_free (w);
    DDS_free (PP_min_dt);
    DDS_free (PP_seq_dt);
    DDS_free (PP_string_dt);
    DDS_free (PP_fixed_dt);
    DDS_free (PP_array_dt);
    DDS_free (PP_bseq_dt);
    DDS_free (PP_quit_dt);
    DDS_free (dpQos);
    DDS_free (tQos);
    DDS_free (dwQos);
    DDS_free (drQos);

    printf ("Completed ping example\n");
    fflush(stdout);
    return 0;
}
예제 #10
0
파일: main.c 프로젝트: sevenbitbyte/ros_dds
int main (
    int argc,
    char *argv[])
{
    DDS_DomainParticipantFactory dpf;
    DDS_DomainParticipant dp;
    DDS_DomainId_t domain = DDS_DOMAIN_ID_DEFAULT;
    DDS_ReturnCode_t status;
    Chat_ChatMessageTypeSupport chatMessageTS;
    DDS_Topic chatMessageTopic;
    char *chatMessageTypeName;

    /* Create a DomainParticipantFactory and a DomainParticipant */
    /* (using Default QoS settings). */
    dpf = DDS_DomainParticipantFactory_get_instance();
    if (!dpf) {
        printf("Creating ParticipantFactory failed!!\n");
        exit(-1);
    }
    printf("Created ParticipantFactory.\n");

    dp = DDS_DomainParticipantFactory_create_participant (
             dpf,
             domain,
             DDS_PARTICIPANT_QOS_DEFAULT,
             NULL,
             DDS_STATUS_MASK_NONE);
    if (!dp) {
        printf("Creating Participant failed!!\n");
        exit(-1);
    }
    printf("Created Participant.\n");


    /* Register the required data type for ChatMessage. */
    chatMessageTS = Chat_ChatMessageTypeSupport__alloc();
    if (!chatMessageTS) {
        printf ("Allocating TypeSupport failed!!\n");
        exit(-1);
    };
    chatMessageTypeName = Chat_ChatMessageTypeSupport_get_type_name(chatMessageTS);
    status = Chat_ChatMessageTypeSupport_register_type(
                 chatMessageTS, dp, chatMessageTypeName);
    if (status != DDS_RETCODE_OK) {
        printf("Registering data type failed. Status = %d\n", status);
        exit(-1);
    };
    printf("Registered data type.\n");

    /*Create the ChatMessage topic */
    chatMessageTopic = DDS_DomainParticipant_create_topic(
                           dp,
                           "Chat_ChatMessage",
                           chatMessageTypeName,
                           DDS_TOPIC_QOS_DEFAULT,
                           NULL,
                           DDS_STATUS_MASK_NONE);
    if (!chatMessageTopic) {
        printf("Creating ChatMessage topic failed!!\n");
        exit(-1);
    };
    printf("Created ChatMessage topic.\n");

    DDS_PublisherQos *pub_qos;
    DDS_DataWriterQos *dw_qos;
    DDS_Publisher chatPublisher;
    Chat_ChatMessageDataWriter talker;
    Chat_NameServiceDataWriter nameServer;
    char *partitionName = NULL;

    DDS_Topic nameServiceTopic;

    /* Adapt the default PublisherQos to write into the
       "ChatRoom" Partition. */
    partitionName = "ChatRoom";
    pub_qos = DDS_PublisherQos__alloc();
    if (!pub_qos) {
        printf("Allocating PublisherQos failed!!\n");
        exit(-1);
    }
    status = DDS_DomainParticipant_get_default_publisher_qos (
                 dp, pub_qos);
    if (status != DDS_RETCODE_OK) {
        printf("Getting default publisher qos failed!!\n");
        exit(-1);
    }
    pub_qos->partition.name._length = 1;
    pub_qos->partition.name._maximum = 1;
    pub_qos->partition.name._buffer = DDS_StringSeq_allocbuf (1);
    if (!pub_qos->partition.name._buffer) {
        printf("Allocating partition name failed!!\n");
        exit(-1);
    }
    pub_qos->partition.name._buffer[0] = DDS_string_alloc (
            strlen(partitionName));
    if (!pub_qos->partition.name._buffer[0]) {
        printf("Allocating partition name failed!!\n");
        exit(-1);
    }
    strcpy (pub_qos->partition.name._buffer[0], partitionName);

    /* Create a Publisher for the chatter application. */
    chatPublisher = DDS_DomainParticipant_create_publisher(
                        dp, pub_qos, NULL, DDS_STATUS_MASK_NONE);
    if (!chatPublisher) {
        printf("Creating publisher failed!!\n");
        exit(-1);
    }
    printf("Created publisher.\n");

    /* Create a DataWriter for the ChatMessage Topic
       (using the appropriate QoS). */
    talker = DDS_Publisher_create_datawriter(
                 chatPublisher,
                 chatMessageTopic,
                 DDS_DATAWRITER_QOS_USE_TOPIC_QOS,
                 NULL,
                 DDS_STATUS_MASK_NONE);
    if (!talker) {
        printf("Creating datawriter failed!!\n");
        exit(-1);
    }
    printf("Created datawriter.\n");

    // Initialize message
    int ownID = 0;

    Chat_ChatMessage *msg;
    msg = Chat_ChatMessage__alloc();
    //checkHandle(msg, "Chat_ChatMessage__alolc");
    msg->userID = ownID;
    msg->index = 0;
    msg->content = DDS_string_alloc(MAX_MSG_LEN);
    //checkHandle(msg->content, "DDS_string_alloc");
    snprintf(msg->content, MAX_MSG_LEN, "hello world");

    // register a chat message
    DDS_InstanceHandle_t userHandle;
    userHandle = Chat_ChatMessageDataWriter_register_instance(talker, msg);

    Chat_NameService ns;
    ns.userID = ownID;
    ns.name = DDS_string_alloc(Chat_MAX_NAME+1);
    //checkHandle(ns.name, "DDS_string_alloc");
    char *chatterName;
    if (chatterName) {
        strncpy(ns.name, chatterName, Chat_MAX_NAME + 1);
    }
    else {
        snprintf(ns.name, Chat_MAX_NAME+1, "Chatter %d", ownID);
    }

    // Write user information
    status = Chat_NameServiceDataWriter_write(nameServer, &ns, DDS_HANDLE_NIL);
    //checkStatus(status, "Chat_ChatMessageDataWriter_write");

    // Write a message
    status = Chat_ChatMessageDataWriter_write(talker, msg, userHandle);
    // checkStatus(status, "Chat_ChatMessageDataWriter_write");

    // pause
    sleep(1);

    int i = 0;
    for (i = 1; i < 6; ++i)
    {
        msg->index = i;
        snprintf(msg->content, MAX_MSG_LEN, "Message number: %d", msg->index);
        status = Chat_ChatMessageDataWriter_write(talker, msg, userHandle);
        // checkStatus(status, "Chat_ChatMessageDataWriter_write");
        sleep(1);
    }


    /* Remove the DataWriters */
    status = DDS_Publisher_delete_datawriter(chatPublisher,
             talker);
    if (status != DDS_RETCODE_OK) {
        printf("Deleting datawriter failed!!\n");
        exit(-1);
    }
    printf("Deleted datawriter.\n");
    /*status = DDS_Publisher_delete_datawriter(
      chatPublisher, nameServer);
    if (status != DDS_RETCODE_OK) {
      printf("Deleting datawriter (NameService) failed!!\n");
      exit(-1);
    }
    printf("Deleted datawriter (NameService).\n");*/

    /* Remove the Publisher. */
    status = DDS_DomainParticipant_delete_publisher(
                 dp, chatPublisher);
    if (status != DDS_RETCODE_OK) {
        printf("Deleting publisher failed!!\n");
        exit(-1);
    }
    /* De-allocate the PublisherQoS holder. */
    DDS_free(pub_qos); // Note that DDS_free recursively
    // de-allocates all indirections!!
    printf("Deleted publisher.\n");

    /* Deleting the Topic. */
    status = DDS_DomainParticipant_delete_topic(
                 dp, chatMessageTopic);
    if (status != DDS_RETCODE_OK) {
        printf("Deleting topic failed. Status = %d\n", status);
        exit(-1);
    };
    printf("Deleted ChatMessage topic.\n");

    /* Deleting the DomainParticipant */
    status = DDS_DomainParticipantFactory_delete_participant(
                 dpf, dp);
    if (status != DDS_RETCODE_OK) {
        printf("Deleting participant failed. Status = %d\n", status);
        exit(-1);
    };
    printf("Deleted Participant.\n");

    /* Everything is fine, return normally. */
    return 0;
};