int main(int argc, char *argv[])
{
c_bool isTransient, isPersistent;
c_bool isClosed = FALSE;
unsigned long i, j;
os_time os_delay2000 = { 2, 0 };
DDS_sequence_DurabilityData_Msg* DurabilityData_Msg_Seq = DDS_sequence_DurabilityData_Msg__alloc();
DDS_SampleInfoSeq* DurabilityData_infoSeq = DDS_SampleInfoSeq__alloc();
if( argc < 2 )
{
usage();
}
isTransient = (strcmp(argv[1], "transient") == 0) ? TRUE : FALSE;
isPersistent = (strcmp(argv[1], "persistent") == 0) ? TRUE : FALSE;
if( ! (isTransient || isPersistent) )
{
usage();
}
g_durability_kind = (char*) argv[1];
// Create DDS DomainParticipant
createParticipant("Durability example");
// Register the Topic's type in the DDS Domain.
g_MsgTypeSupport = DurabilityData_MsgTypeSupport__alloc();
checkHandle(g_MsgTypeSupport, "DurabilityData_MsgTypeSupport__alloc");
registerType(g_MsgTypeSupport);
// Create the Topic's in the DDS Domain.
g_MsgTypeName = (char*) DurabilityData_MsgTypeSupport_get_type_name(g_MsgTypeSupport);
createTopic("DurabilityData_Msg", g_MsgTypeName);
DDS_free(g_MsgTypeName);
DDS_free(g_MsgTypeSupport);
// Create the Subscriber's in the DDS Domain.
createSubscriber();
// Request a Reader from the the Subscriber.
createReader();
printf("=== [Subscriber] Ready ...");
// Added a max iteration threshold in order to avoid looping infinitely.
// This is in the case of "persistent" + auto_dispose == TRUE,
// if the user tries to use persistence feature, it won't succeed:
// with this setting value, the Instance is still deleted upon the delete of the Writer,
// even though the persistent setting has been passed on both processes.
i = 0;
do
{
g_status = DurabilityData_MsgDataReader_take(
g_DataReader,
DurabilityData_Msg_Seq,
DurabilityData_infoSeq,
DDS_LENGTH_UNLIMITED,
DDS_ANY_SAMPLE_STATE,
DDS_ANY_VIEW_STATE,
DDS_ANY_INSTANCE_STATE );
checkStatus(g_status, "DurabilityData_MsgDataReader_take");
if( DurabilityData_Msg_Seq->_length > 0 )
{
j = 0;
do
{
if( DurabilityData_infoSeq->_buffer[j].valid_data )
{
printf("\n%s", DurabilityData_Msg_Seq->_buffer[j].content);
if( strcmp(DurabilityData_Msg_Seq->_buffer[j].content, "9") == 0 )
{
isClosed = TRUE;
}
}
}
while( ++j < DurabilityData_Msg_Seq->_length );
DurabilityData_MsgDataReader_return_loan (g_DataReader, DurabilityData_Msg_Seq, DurabilityData_infoSeq);
}
os_nanoSleep(os_delay2000);
}
while( isClosed == FALSE && i++ < 5);
// Cleanup DDS from the created Entities.
deleteDataReader();
deleteSubscriber();
deleteTopic();
deleteParticipant();
// Cleanup C allocations, recursively freeing the allocated structures and sequences using the OpenSplice API.
DDS_free(DurabilityData_Msg_Seq);
DDS_free(DurabilityData_infoSeq);
// Print out an empty line, just to let behind a clean new line for the shell..
printf("\n");
return 0;
}
int OSPL_MAIN (int argc, char *argv[])
{
DDS_Subscriber QueryConditionDataSubscriber;
DDS_DataReader QueryConditionDataDataReader;
StockMarket_Stock* QueryConditionDataSample;
DDS_sequence_StockMarket_Stock* msgList = DDS_sequence_StockMarket_Stock__alloc();
DDS_SampleInfoSeq* infoSeq = DDS_SampleInfoSeq__alloc();
c_bool isClosed = FALSE;
unsigned long j;
DDS_char* QueryConditionDataToSubscribe;
DDS_char *query_string = "ticker=%0";
DDS_QueryCondition queryCondition;
os_time delay_200ms = { 0, 200000000 };
int count = 0;
// usage : QueryConditionSubscriber <topic's content filtering string>
if( argc < 2 )
{
usage();
}
printf("\n\n Starting QueryConditionSubscriber...");
printf("\n\n Parameter is \"%s\"", argv[1]);
QueryConditionDataToSubscribe = argv[1];
createParticipant("QueryCondition example");
// Register Stock Topic's type in the DDS Domain.
g_StockTypeSupport = (DDS_TypeSupport) StockMarket_StockTypeSupport__alloc();
checkHandle(g_StockTypeSupport, "StockMarket_StockTypeSupport__alloc");
registerStockType(g_StockTypeSupport);
// Create Stock Topic in the DDS Domain.
g_StockTypeName = StockMarket_StockTypeSupport_get_type_name(g_StockTypeSupport);
g_StockTopic = createTopic("StockTrackerExclusive", g_StockTypeName);
DDS_free(g_StockTypeName);
DDS_free(g_StockTypeSupport);
// Create the Subscriber's in the DDS Domain.
QueryConditionDataSubscriber = createSubscriber();
// Request a Reader from the the Subscriber.
QueryConditionDataDataReader = createDataReader(QueryConditionDataSubscriber, g_StockTopic);
// Create QueryCondition
printf( "\n=== [QueryConditionSubscriber] Query : ticker = %s\n", QueryConditionDataToSubscribe );
queryCondition = createQueryCondition(QueryConditionDataDataReader, query_string, (DDS_char*) QueryConditionDataToSubscribe);
printf( "\n=== [QueryConditionSubscriber] Ready..." );
do
{
g_status = StockMarket_StockDataReader_take_w_condition(QueryConditionDataDataReader,
msgList,
infoSeq,
DDS_LENGTH_UNLIMITED,
queryCondition);
checkStatus(g_status, "StockMarket_StockDataReaderView_take");
if( msgList->_length > 0 )
{
j = 0;
do
{
QueryConditionDataSample = &msgList->_buffer[j];
// When is this supposed to happen?
// Needs comment...
if( infoSeq->_buffer[j].valid_data )
{
printf("\n\n %s: %f", QueryConditionDataSample->ticker, QueryConditionDataSample->price);
if( QueryConditionDataSample->price == (DDS_float) -1.0f )
{
printf("\n ===[QueryConditionSubscriber] QueryConditionDataSample->price == -1.0f ");
isClosed = TRUE;
}
}
}
while( ++j < msgList->_length );
g_status = StockMarket_StockDataReader_return_loan(QueryConditionDataDataReader, msgList, infoSeq);
checkStatus(g_status, "StockMarket_StockDataReaderView_return_loan");
}
os_nanoSleep(delay_200ms);
++count;
}
while( isClosed == FALSE && count < 1500 );
printf("\n\n=== [QueryConditionSubscriber] Market Closed");
// Cleanup DDS from the created Entities.
deleteQueryCondition(QueryConditionDataDataReader, queryCondition);
deleteDataReader(QueryConditionDataSubscriber, QueryConditionDataDataReader);
deleteSubscriber(QueryConditionDataSubscriber);
deleteTopic(g_StockTopic);
deleteParticipant();
// Cleanup C allocations,
// recursively freeing the allocated structures and sequences using the OpenSplice API.
DDS_free(msgList);
DDS_free(infoSeq);
// Print out an empty line, just to let behind a clean new line for the shell..
printf("\n\r");
return 0;
}
int main(int argc, char *argv[])
{
DDS_sequence_HelloWorldData_Msg* message_seq = DDS_sequence_HelloWorldData_Msg__alloc();
DDS_SampleInfoSeq* message_infoSeq = DDS_SampleInfoSeq__alloc();
DDS_Subscriber message_Subscriber;
DDS_DataReader message_DataReader;
c_bool isClosed = FALSE;
int count = 0;
os_time os_delay200 = { 0, 200000000 };
// Create DDS DomainParticipant
createParticipant("HelloWorld example");
// Register the Topic's type in the DDS Domain.
g_MessageTypeSupport = HelloWorldData_MsgTypeSupport__alloc();
checkHandle(g_MessageTypeSupport, "HelloWorldData_MsgTypeSupport__alloc");
registerMessageType(g_MessageTypeSupport);
// Create the Topic's in the DDS Domain.
g_MessageTypeName = (char*) HelloWorldData_MsgTypeSupport_get_type_name(g_MessageTypeSupport);
g_MessageTopic = createTopic("HelloWorldData_Msg", g_MessageTypeName);
DDS_free(g_MessageTypeName);
DDS_free(g_MessageTypeSupport);
// Create the Subscriber's in the DDS Domain.
message_Subscriber = createSubscriber("HelloWorld");
// Request a Reader from the the Subscriber.
message_DataReader = createDataReader(message_Subscriber, g_MessageTopic);
printf("\n=== [Subscriber] Ready ...");
do
{
g_status = HelloWorldData_MsgDataReader_take(
message_DataReader,
message_seq,
message_infoSeq,
1,
DDS_ANY_SAMPLE_STATE,
DDS_ANY_VIEW_STATE,
DDS_ANY_INSTANCE_STATE );
checkStatus(g_status, "HelloWorldData_MsgDataReader_take");
if( message_seq->_length > 0 && message_infoSeq->_buffer[0].valid_data )
{
isClosed = TRUE;
printf("\n=== [Subscriber] message received :" );
printf( "\n userID : %d", message_seq->_buffer[0].userID );
printf( "\n Message : \"%s\"\n", message_seq->_buffer[0].message );
HelloWorldData_MsgDataReader_return_loan (message_DataReader, message_seq, message_infoSeq);
}
if(isClosed == FALSE)
{
os_nanoSleep(os_delay200);
++count;
}
}
while( isClosed == FALSE && count < 1500 );
os_nanoSleep(os_delay200);
// Cleanup DDS from the created Entities.
deleteDataReader(message_Subscriber, message_DataReader);
deleteSubscriber(message_Subscriber);
deleteTopic(g_MessageTopic);
deleteParticipant();
// Cleanup C allocations
// Recursively free the instances sequence using the OpenSplice API.
DDS_free(message_seq);
DDS_free(message_infoSeq);
return 0;
}
int main(int argc, char *argv[])
{
char* partition_name = "ContentFilteredTopic example";
DDS_Subscriber contentFilteredTopicDataSubscriber;
DDS_DataReader contentFilteredTopicDataDataReader;
ContentFilteredTopicData_Stock* contentFilteredTopicDataSample;
DDS_InstanceHandle_t userHandle;
DDS_sequence_ContentFilteredTopicData_Stock* msgList = DDS_sequence_ContentFilteredTopicData_Stock__alloc();
DDS_SampleInfoSeq* infoSeq = DDS_SampleInfoSeq__alloc();
c_bool isClosed = FALSE;
unsigned long j, userInput, timeOut;
const char *filterValueToSubscribe;
DDS_char* contentFilteredStockTopicName = "MyStockTopic";
DDS_ContentFilteredTopic contentFilteredTopic;
int filter_expressionLength;
const char* filter_expressionPrefix = "ticker = '";
const char* filter_expressionSuffix = "'";
DDS_char *filter_expression;
const DDS_StringSeq* filter_parameters = DDS_StringSeq__alloc();
os_time delay_200ms = { 0, 200000000 };
int count = 0;
// usage : ContentFilteredTopicDataSubscriber <topic's content filtering string>
if( argc < 2 )
{
usage();
}
printf("=== ContentFilteredTopicDataSubscriber");
// Removed to comply with expected results
//printf("\n\n Parameter is \"%s\"", argv[1]);
filterValueToSubscribe = argv[1];
createParticipant( partition_name );
// Register Stock Topic's type in the DDS Domain.
g_StockTypeSupport = (DDS_TypeSupport) ContentFilteredTopicData_StockTypeSupport__alloc();
checkHandle(g_StockTypeSupport, "ContentFilteredTopicData_StockTypeSupport__alloc");
registerStockType(g_StockTypeSupport);
// Create Stock Topic in the DDS Domain.
g_StockTypeName = (char*) ContentFilteredTopicData_StockTypeSupport_get_type_name(g_StockTypeSupport);
g_StockTopic = createTopic("StockTrackerExclusive", g_StockTypeName);
DDS_free(g_StockTypeName);
DDS_free(g_StockTypeSupport);
// Create the Subscriber's in the DDS Domain.
contentFilteredTopicDataSubscriber = createSubscriber();
// create subscription filter
filter_expressionLength = strlen(filter_expressionPrefix);
filter_expressionLength += strlen(filterValueToSubscribe);
filter_expressionLength += strlen(filter_expressionSuffix);
filter_expression = DDS_string_alloc(filter_expressionLength);
snprintf(filter_expression, filter_expressionLength + 1, "%s%s%s", filter_expressionPrefix, filterValueToSubscribe, filter_expressionSuffix);
// create ContentFilteredTopic to retrieve only the samples with the given Stock.
contentFilteredTopic = createContentFilteredTopic(contentFilteredStockTopicName, g_StockTopic, filter_expression, filter_parameters);
// create Filtered DataReader
printf( "\n=== [ContentFilteredTopicDataSubscriber] Subscription filter : %s", filter_expression );
// Request a Reader from the the Subscriber.
contentFilteredTopicDataDataReader = createContentFilteredDataReader(contentFilteredTopicDataSubscriber, contentFilteredTopic);
printf( "\n=== [ContentFilteredTopicDataSubscriber] Ready ..." );
do
{
g_status = ContentFilteredTopicData_StockDataReader_take(contentFilteredTopicDataDataReader, msgList, infoSeq, DDS_LENGTH_UNLIMITED, DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
checkStatus(g_status, "ContentFilteredTopicData_StockDataReaderView_take");
if( msgList->_length > 0 )
{
j = 0;
do
{
contentFilteredTopicDataSample = &msgList->_buffer[j];
if( infoSeq->_buffer[j].valid_data )
{
if( contentFilteredTopicDataSample->price != (DDS_float) -1.0f )
{
int floatWidth = ( ((DDS_float) contentFilteredTopicDataSample->price) - ((long) contentFilteredTopicDataSample->price) ) ? 1 : 0;
printf("\n=== [ContentFilteredTopicDataSubscriber] receives stockQuote : (%s, %.*f)", contentFilteredTopicDataSample->ticker, floatWidth, contentFilteredTopicDataSample->price);
}
else
{
isClosed = TRUE;
}
}
}
while( ++j < msgList->_length );
g_status = ContentFilteredTopicData_StockDataReader_return_loan(contentFilteredTopicDataDataReader, msgList, infoSeq);
checkStatus(g_status, "ContentFilteredTopicData_StockDataReader_return_loan");
if(isClosed == FALSE)
{
os_nanoSleep(delay_200ms);
++count;
}
}
}
while( isClosed == FALSE && count < 1500); // We dont want the example to run indefinitely
printf("\n=== [ContentFilteredTopicDataSubscriber] Market Closed\n");
// Cleanup DDS from the created Entities.
deleteDataReader(contentFilteredTopicDataSubscriber, contentFilteredTopicDataDataReader);
deleteSubscriber(contentFilteredTopicDataSubscriber);
deleteContentFilteredTopic(contentFilteredTopic);
deleteTopic(g_StockTopic);
deleteParticipant();
// Cleanup C allocations,
// recursively freeing the allocated structures and sequences using the OpenSplice API.
DDS__free(msgList);
DDS__free(infoSeq);
// Print out an empty line, just to let behind a clean new line for the shell..
// Removed to comply with expected results
//printf("\n\r");
return 0;
}
int main(int argc, char *argv[])
{
DDS_sequence_LifecycleData_Msg* msgSeq = DDS_sequence_LifecycleData_Msg__alloc();
DDS_SampleInfoSeq* msgInfoSeq = DDS_SampleInfoSeq__alloc();
DDS_Subscriber msgSubscriber;
DDS_DataReader msgDataReader;
unsigned long j, inputChar;
os_time os_delay20ms = (os_time) {0, 20000000};
os_time os_delay200ms = (os_time) {0, 200000000};
// Force the output to be unbuffered.
setbuf(stdout, (char *) 0);
// First initialize the Topics and their DDS Entities
// Create DDS DomainParticipant
createParticipant("Lifecycle example");
//------------------ Msg topic --------------------//
// Register Msg Topic's type in the DDS Domain.
g_msgTypeSupport = LifecycleData_MsgTypeSupport__alloc();
checkHandle(g_msgTypeSupport, "LifecycleData_MsgTypeSupport__alloc");
registerMsgType(g_msgTypeSupport);
// Create Msg Topic in the DDS Domain.
g_msgTypeName = (char*) LifecycleData_MsgTypeSupport_get_type_name(g_msgTypeSupport);
g_msgTopic = createTopic("Lifecycle_Msg", g_msgTypeName);
DDS_free(g_msgTypeName);
DDS_free(g_msgTypeSupport);
// Create the Publisher's in the DDS Domain.
msgSubscriber = createSubscriber();
// Request a DataReader from the the Subscriber.
msgDataReader = createDataReader(msgSubscriber, g_msgTopic);
//End initialization.
printf("\n=== [Subscriber] Ready...");
msgInfoSeq->_length = 0;
DDS_boolean closed = FALSE;
int nbIter = 1;
int nbIterMax = 100;
while ((closed == FALSE) && (nbIter < nbIterMax))
{
g_status = LifecycleData_MsgDataReader_read(msgDataReader, msgSeq, msgInfoSeq, 1, DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
checkStatus(g_status, "LifecycleData_MsgDataReader_read");
if( msgInfoSeq->_length > 0 )
{
if( msgInfoSeq->_buffer[0].valid_data == TRUE )
{
printf("\n\n Message : %s", msgSeq->_buffer[0].message);
printf("\n WriterStates : %s", msgSeq->_buffer[0].writerStates);
printf("\n valid_data : %d", msgInfoSeq->_buffer[0].valid_data);
printf("\n sample_state:%s-view_state:%s-instance_state:%s\n",
sSampleState[getIndex(msgInfoSeq->_buffer[0].sample_state)],
sViewState[getIndex(msgInfoSeq->_buffer[0].view_state)],
sInstanceState[getIndex(msgInfoSeq->_buffer[0].instance_state)]);
}
closed = strcmp(msgSeq->_buffer[0].writerStates, "STOPPING_SUBSCRIBER") == 0 ? TRUE : FALSE;
printf("=== closed=%d - nbIter %d\n", closed, nbIter);
g_status = LifecycleData_MsgDataReader_return_loan(msgDataReader, msgSeq, msgInfoSeq);
checkStatus(g_status, "LifecycleData_MsgDataReader_return_loan");
// Useless to harass the system, so we wait before to retry.
os_nanoSleep(os_delay200ms);
msgInfoSeq->_length = 0;
nbIter++;
}
}
printf("\n=== [Subscriber] stopping after %d iterations ..\n", nbIter);
if (nbIter == nbIterMax) printf ("*** Error : max %d iterations reached", nbIterMax);
// Cleanup DDS from the created Entities.
deleteDataReader(msgSubscriber, msgDataReader);
deleteSubscriber(msgSubscriber);
deleteTopic(g_msgTopic);
deleteParticipant();
// Cleanup C allocations, recursively freeing the allocated structures and sequences using the OpenSplice API.
DDS__free(msgSeq);
DDS__free(msgInfoSeq);
return 0;
}
int OSPL_MAIN (int argc, char *argv[])
{
DDS_sequence_ListenerData_Msg* message_seq = DDS_sequence_ListenerData_Msg__alloc();
DDS_SampleInfoSeq* message_infoSeq = DDS_SampleInfoSeq__alloc();
DDS_Subscriber message_Subscriber;
DDS_DataReader message_DataReader;
DDS_WaitSet waitSet;
DDS_ConditionSeq* guardList = NULL;
struct DDS_DataReaderListener *message_Listener;
DDS_Duration_t timeout = { 0, 200000000 };
struct Listener_data* Listener_data;
DDS_GuardCondition guardCondition = DDS_GuardCondition__alloc();
int count = 0;
DDS_StatusMask mask;
// Create DDS DomainParticipant
createParticipant("Listener example");
// Register the Topic's type in the DDS Domain.
g_MessageTypeSupport = ListenerData_MsgTypeSupport__alloc();
checkHandle(g_MessageTypeSupport, "ListenerData_MsgTypeSupport__alloc");
registerMessageType(g_MessageTypeSupport);
// Create the Topic's in the DDS Domain.
g_MessageTypeName = ListenerData_MsgTypeSupport_get_type_name(g_MessageTypeSupport);
g_MessageTopic = createTopic("ListenerData_Msg", g_MessageTypeName);
DDS_free(g_MessageTypeName);
DDS_free(g_MessageTypeSupport);
// Create the Subscriber's in the DDS Domain.
message_Subscriber = createSubscriber();
// Request a Reader from the the Subscriber.
message_DataReader = createDataReader(message_Subscriber, g_MessageTopic);
/* Allocate the DataReaderListener interface. */
message_Listener = DDS_DataReaderListener__alloc();
checkHandle(message_Listener, "DDS_DataReaderListener__alloc");
Listener_data = malloc(sizeof(struct Listener_data));
checkHandle(Listener_data, "malloc");
Listener_data->guardCondition = &guardCondition;
Listener_data->message_DataReader = &message_DataReader;
Listener_data->isClosed = &isClosed;
message_Listener->listener_data = Listener_data;
message_Listener->on_data_available = on_data_available;
message_Listener->on_requested_deadline_missed = on_requested_deadline_missed;
mask =
DDS_DATA_AVAILABLE_STATUS | DDS_REQUESTED_DEADLINE_MISSED_STATUS;
g_status = DDS_DataReader_set_listener(message_DataReader, message_Listener, mask);
checkStatus(g_status, "DDS_DataReader_set_listener");
// WaitSet is used to avoid spinning in the loop below.
waitSet = DDS_WaitSet__alloc();
checkHandle(waitSet, "DDS_WaitSet__alloc");
g_status = DDS_WaitSet_attach_condition(waitSet, guardCondition);
checkStatus(g_status, "DDS_WaitSet_attach_condition (readCondition)");
// Initialize and pre-allocate the GuardList used to obtain the triggered Conditions.
guardList = DDS_ConditionSeq__alloc();
checkHandle(guardList, "DDS_ConditionSeq__alloc");
guardList->_maximum = 1;
guardList->_length = 0;
guardList->_buffer = DDS_ConditionSeq_allocbuf(1);
checkHandle(guardList->_buffer, "DDS_ConditionSeq_allocbuf");
printf("\n=== [ListenerDataSubscriber] Ready...");
isClosed = FALSE;
do
{
g_status = DDS_WaitSet_wait(waitSet, guardList, &timeout);
if(g_status != DDS_RETCODE_TIMEOUT)
{
checkStatus(g_status, "DDS_WaitSet_wait");
}
else
{
printf("\n=== [ListenerDataSubscriber] (timeout)");
}
g_status = DDS_GuardCondition_set_trigger_value(guardCondition, FALSE);
checkStatus(g_status, "DDS_GuardCondition_set_trigger_value");
++ count;
}
while( isClosed == FALSE && count < 1500 );
printf("\n\n=== [ListenerDataSubscriber] isClosed");
// Cleanup DDS from the created Entities.
deleteDataReader(message_Subscriber, message_DataReader);
deleteSubscriber(message_Subscriber);
deleteTopic(g_MessageTopic);
deleteParticipant();
// Cleanup C allocations
// Recursively free the instances sequence using the OpenSplice API.
DDS_free(message_seq);
DDS_free(message_infoSeq);
free(Listener_data);
// Print out an empty line, just to avoid the shell writing on the same line as our last output.
printf("\n");
return 0;
}
int OSPL_MAIN (int argc, char *argv[])
{
DDS_sequence_WaitSetData_Msg* message_seq = DDS_sequence_WaitSetData_Msg__alloc();
DDS_SampleInfoSeq* message_infoSeq = DDS_SampleInfoSeq__alloc();
DDS_Subscriber message_Subscriber;
DDS_DataReader message_DataReader;
DDS_char* query_parameter = "Hello again";
DDS_char *query_string = "message=%0";
DDS_ReadCondition readCondition;
DDS_QueryCondition queryCondition;
DDS_StatusCondition statusCondition;
DDS_WaitSet waitSet;
DDS_GuardCondition escape;
DDS_LivelinessChangedStatus livelinessChangedStatus;
DDS_ConditionSeq *guardList = NULL;
DDS_Duration_t timeout = { 20, 0 };
int count = 0;
DDS_long previousLivelinessCount;
c_bool isClosed = FALSE;
c_bool isEscaped = FALSE;
c_bool writerLeft = FALSE;
unsigned long i, j;
// Create DDS DomainParticipant
createParticipant("WaitSet example");
// Register the Topic's type in the DDS Domain.
g_MessageTypeSupport = WaitSetData_MsgTypeSupport__alloc();
checkHandle(g_MessageTypeSupport, "WaitSetData_MsgTypeSupport__alloc");
registerMessageType(g_MessageTypeSupport);
// Create the Topic's in the DDS Domain.
g_MessageTypeName = WaitSetData_MsgTypeSupport_get_type_name(g_MessageTypeSupport);
g_MessageTopic = createTopic("WaitSetData_Msg", g_MessageTypeName);
DDS_free(g_MessageTypeName);
DDS_free(g_MessageTypeSupport);
// Create the Subscriber's in the DDS Domain.
message_Subscriber = createSubscriber();
// Request a Reader from the the Subscriber.
message_DataReader = createDataReader(message_Subscriber, g_MessageTopic);
// 1- Create a ReadCondition that will contain new Msg only.
readCondition = DDS_DataReader_create_readcondition(message_DataReader, DDS_NOT_READ_SAMPLE_STATE, DDS_NEW_VIEW_STATE, DDS_ALIVE_INSTANCE_STATE);
checkHandle(readCondition, "DDS_DataReader_create_readcondition (newUser)");
// 2- Create QueryCondition.
queryCondition = createQueryCondition(message_DataReader, query_string, (DDS_char*) query_parameter);
printf("=== [WaitSetDataSubscriber] Query : message = \"%s\"", query_parameter);
// 3- Obtain a StatusCondition associated to a Writer
// and that triggers only when the Writer changes Liveliness.
statusCondition = DDS_DataReader_get_statuscondition(message_DataReader);
checkHandle(statusCondition, "DDS_DataReader_get_statuscondition");
g_status = DDS_StatusCondition_set_enabled_statuses(statusCondition, DDS_LIVELINESS_CHANGED_STATUS);
checkStatus(g_status, "DDS_StatusCondition_set_enabled_statuses");
// 4- Create a GuardCondition which will be used to close the subscriber.
escape = DDS_GuardCondition__alloc();
checkHandle(escape, "DDS_GuardCondition__alloc");
// Create a waitset and add the 4 Conditions created above :
// ReadCondition, QueryCondition, StatusCondition, GuardCondition.
waitSet = DDS_WaitSet__alloc();
checkHandle(waitSet, "DDS_WaitSet__alloc");
g_status = DDS_WaitSet_attach_condition(waitSet, readCondition);
checkStatus(g_status, "DDS_WaitSet_attach_condition (readCondition)");
g_status = DDS_WaitSet_attach_condition(waitSet, queryCondition);
checkStatus(g_status, "DDS_WaitSet_attach_condition (queryCondition)");
g_status = DDS_WaitSet_attach_condition(waitSet, statusCondition);
checkStatus(g_status, "DDS_WaitSet_attach_condition (statusCondition)");
g_status = DDS_WaitSet_attach_condition(waitSet, escape);
checkStatus(g_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 = 4;
guardList->_length = 0;
guardList->_buffer = DDS_ConditionSeq_allocbuf(4);
checkHandle(guardList->_buffer, "DDS_ConditionSeq_allocbuf");
printf("\n=== [WaitSetDataSubscriber] Ready ...");
// Used to store the livelinessChangedStatus.alive_count value (StatusCondition).
previousLivelinessCount = 0;
do
{
// Wait until at least one of the Conditions in the waitset triggers.
g_status = DDS_WaitSet_wait(waitSet, guardList, &timeout);
if (g_status == DDS_RETCODE_OK) {
i = 0;
do
{
if( guardList->_buffer[i] == statusCondition )
{
// StatusCondition triggered.
// Some liveliness has changed (either a DataWriter joined or a DataWriter left).
// Check whether a new Writer appeared.
g_status = DDS_DataReader_get_liveliness_changed_status(message_DataReader, &livelinessChangedStatus);
checkStatus(g_status, "DDS_DataReader_get_liveliness_changed_status");
if( livelinessChangedStatus.alive_count > previousLivelinessCount )
{
// a DataWriter joined.
printf("\n\n!!! a MsgWriter joined");
g_status = DDS_StatusCondition_set_enabled_statuses(statusCondition, DDS_LIVELINESS_CHANGED_STATUS);
checkStatus(g_status, "DDS_StatusCondition_set_enabled_statuses");
}
else if( livelinessChangedStatus.alive_count < previousLivelinessCount )
{
// A MsgWriter lost its liveliness.
printf("\n\n!!! a MsgWriter lost its liveliness");
g_status = DDS_StatusCondition_set_enabled_statuses(statusCondition, DDS_LIVELINESS_CHANGED_STATUS);
checkStatus(g_status, "DDS_StatusCondition_set_enabled_statuses");
writerLeft = TRUE;
printf("\n === Triggering escape condition");
g_status = DDS_GuardCondition_set_trigger_value(escape, TRUE);
checkStatus(g_status, "DDS_GuardCondition_set_trigger_value");
}
else if ( livelinessChangedStatus.alive_count == previousLivelinessCount )
{
// The status has changed, though alive_count is still zero,
// this implies that both events have occurred,
// and that the value is back to zero already.
printf("\n\n!!! a MsgWriter joined\n");
printf("\n\n!!! a MsgWriter lost its liveliness\n");
writerLeft = TRUE;
printf("\n === Triggering escape condition");
g_status = DDS_GuardCondition_set_trigger_value(escape, TRUE);
checkStatus(g_status, "DDS_GuardCondition_set_trigger_value");
// NB: we do not need to activate this Condition anymore;
// both events occurred.
}
// NB: Here we record the count a in order to compare it next time this condition triggers (?).
previousLivelinessCount = livelinessChangedStatus.alive_count;
}
else if( guardList->_buffer[i] == readCondition )
{
/* The newMsg ReadCondition contains data */
g_status = WaitSetData_MsgDataReader_read_w_condition(message_DataReader, message_seq, message_infoSeq, DDS_LENGTH_UNLIMITED, readCondition);
checkStatus(g_status, "WaitSetData_MsgDataReader_read_w_condition");
for( j = 0; j < message_seq->_length ; j++ )
{
printf("\n --- New message received ---");
if( message_infoSeq->_buffer[j].valid_data == TRUE )
{
printf("\n userID : %d", message_seq->_buffer[j].userID);
printf("\n Message : \"%s\"", message_seq->_buffer[j].message);
}
else
{
printf("\n Data is invalid!");
}
}
fflush(stdout);
g_status = WaitSetData_MsgDataReader_return_loan(message_DataReader, message_seq, message_infoSeq);
checkStatus(g_status, "WaitSetData_MsgDataReader_return_loan");
}
else if( guardList->_buffer[i] == queryCondition )
{
/* The queryCond QueryCondition contains data */
g_status = WaitSetData_MsgDataReader_take_w_condition(message_DataReader, message_seq, message_infoSeq, DDS_LENGTH_UNLIMITED, queryCondition);
checkStatus(g_status, "WaitSetData_MsgDataReader_take_w_condition");
for( j = 0; j < message_seq->_length ; j++ )
{
printf("\n\n --- message received (with QueryCOndition on message field) ---");
if( message_infoSeq->_buffer[j].valid_data == TRUE )
{
printf("\n userID : %d", message_seq->_buffer[j].userID);
printf("\n Message : \"%s\"", message_seq->_buffer[j].message);
}
else
{
printf("\n Data is invalid!");
}
}
fflush(stdout);
g_status = WaitSetData_MsgDataReader_return_loan(message_DataReader, message_seq, message_infoSeq);
checkStatus(g_status, "WaitSetData_MsgDataReader_return_loan");
}
// This checks whether the Timeout Thread has resumed waiting.
else if( guardList->_buffer[i] == escape )
{
printf("\n escape condition triggered! - count = %d\n ", count);
isEscaped = TRUE;
g_status = DDS_GuardCondition_set_trigger_value(escape, FALSE);
checkStatus(g_status, "DDS_GuardCondition_set_trigger_value");
}
}
while( ++i < guardList->_length );
}
else if (g_status != DDS_RETCODE_TIMEOUT) {
// DDS_RETCODE_TIMEOUT is considered as an error
// only after it has occurred count times
checkStatus(g_status, "DDS_WaitSet_wait");
} else {
printf("!!! [INFO] WaitSet timedout - count = %d\n ", count);
}
++count;
isClosed = isEscaped && writerLeft;
} while( isClosed == FALSE && count < 20);
if (count >= 20) {
printf( "*** Error : Timed out - count = %d ***\n", count);
}
/* Remove all Conditions from the WaitSet. */
g_status = DDS_WaitSet_detach_condition(waitSet, escape);
checkStatus(g_status, "DDS_WaitSet_detach_condition (escape)");
g_status = DDS_WaitSet_detach_condition(waitSet, statusCondition);
checkStatus(g_status, "DDS_WaitSet_detach_condition (statusCondition)");
g_status = DDS_WaitSet_detach_condition(waitSet, queryCondition);
checkStatus(g_status, "DDS_WaitSet_detach_condition (queryCondition)");
g_status = DDS_WaitSet_detach_condition(waitSet, readCondition);
checkStatus(g_status, "DDS_WaitSet_detach_condition (readCondition)");
// Cleanup DDS from the created Entities.
deleteQueryCondition(message_DataReader, readCondition);
deleteQueryCondition(message_DataReader, queryCondition);
deleteDataReader(message_Subscriber, message_DataReader);
deleteSubscriber(message_Subscriber);
deleteTopic(g_MessageTopic);
deleteParticipant();
// Cleanup C allocations
// Recursively free the instances sequence using the OpenSplice API.
DDS_free(guardList);
DDS_free(message_seq);
DDS_free(message_infoSeq);
DDS_free(waitSet);
DDS_free(escape);
printf("\n");
return 0;
}
int main(int argc, char *argv[])
{
DDS_Subscriber OwnershipDataSubscriber;
DDS_DataReader OwnershipDataDataReader;
OwnershipData_Stock* OwnershipDataSample;
DDS_InstanceHandle_t userHandle;
DDS_sequence_OwnershipData_Stock* msgList = DDS_sequence_OwnershipData_Stock__alloc();
DDS_SampleInfoSeq* infoSeq = DDS_SampleInfoSeq__alloc();
c_bool isClosed;
int count = 0;
unsigned long j, userInput, timeOut;
os_time os_delay200 = { 0, 200000000 };
printf("\n\n Starting LifecycleSubscriber...");
createParticipant("Ownership example");
// Register Stock Topic's type in the DDS Domain.
g_StockTypeSupport = (DDS_TypeSupport) OwnershipData_StockTypeSupport__alloc();
checkHandle(g_StockTypeSupport, "OwnershipData_StockTypeSupport__alloc");
registerStockType(g_StockTypeSupport);
// Create Stock Topic in the DDS Domain.
g_StockTypeName = (char*) OwnershipData_StockTypeSupport_get_type_name(g_StockTypeSupport);
g_StockTopic = createTopic("StockTrackerExclusive", g_StockTypeName);
DDS_free(g_StockTypeName);
DDS_free(g_StockTypeSupport);
// Create the Subscriber's in the DDS Domain.
OwnershipDataSubscriber = createSubscriber();
// Request a Reader from the the Subscriber.
OwnershipDataDataReader = createDataReader(OwnershipDataSubscriber, g_StockTopic);
printf("\n\n ===[OwnershipDataSubscriber] Ready...");
printf("\n\n Ticker Price Publisher ownership strength");
isClosed = FALSE;
do
{
g_status = OwnershipData_StockDataReader_take(OwnershipDataDataReader, msgList, infoSeq, 1, DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
checkStatus(g_status, "OwnershipData_StockDataReaderView_take");
if( msgList->_length > 0 )
{
j = 0;
do
{
OwnershipDataSample = &msgList->_buffer[j];
// When is this supposed to happen?
// Needs comment...
if( infoSeq->_buffer[j].valid_data )
{
printf("\n %s %8.1f %s %d", OwnershipDataSample->ticker, OwnershipDataSample->price, OwnershipDataSample->publisher, OwnershipDataSample->strength);
if( OwnershipDataSample->price == (DDS_float) -1.0f )
{
printf("\n ===[OwnershipDataSubscriber] OwnershipDataSample->price == -1.0f ");
isClosed = TRUE;
}
}
}
while( ++j < msgList->_length );
g_status = OwnershipData_StockDataReader_return_loan(OwnershipDataDataReader, msgList, infoSeq);
checkStatus(g_status, "OwnershipData_StockDataReaderView_return_loan");
}
os_nanoSleep(os_delay200);
++count;
}
while( isClosed == FALSE && count < 1500 );
printf("\n\n ===[OwnershipDataSubscriber] Market closed");
// Cleanup DDS from the created Entities.
deleteDataReader(OwnershipDataSubscriber, OwnershipDataDataReader);
deleteSubscriber(OwnershipDataSubscriber);
deleteTopic(g_StockTopic);
deleteParticipant();
// Cleanup C allocations,
// recursively freeing the allocated structures and sequences using the OpenSplice API.
DDS__free(msgList);
DDS__free(infoSeq);
// Print out an empty line, just to let behind a clean new line for the shell..
printf("\n\r");
return 0;
}
