/**************************************************************
* Public functions
**************************************************************/
c_bool
v_readerSubscribe(
v_reader r,
v_partition d)
{
c_bool result;
assert(C_TYPECHECK(r,v_reader));
switch(v_objectKind(r)) {
case K_DATAREADER:
result = v_dataReaderSubscribe(v_dataReader(r),d);
break;
case K_DELIVERYSERVICE:
result = v_deliveryServiceSubscribe(v_deliveryService(r),d);
break;
case K_GROUPQUEUE:
result = v_groupStreamSubscribe(v_groupStream(r),d);
break;
case K_NETWORKREADER:
result = v_networkReaderSubscribe(v_networkReader(r),d);
break;
default:
OS_REPORT_1(OS_ERROR,"v_readerSubscribe failed",0,
"illegal reader kind (%d) specified",
v_objectKind(r));
assert(FALSE);
result = FALSE;
break;
}
readerGetHistoricalData(r);
return result;
}
c_bool
v_readerUnSubscribe(
v_reader r,
v_partition d)
{
assert(C_TYPECHECK(r,v_reader));
switch(v_objectKind(r)) {
case K_DATAREADER:
return v_dataReaderUnSubscribe(v_dataReader(r),d);
case K_DELIVERYSERVICE:
return v_deliveryServiceUnSubscribe(v_deliveryService(r),d);
case K_GROUPQUEUE:
return v_groupStreamUnSubscribe(v_groupStream(r),d);
case K_NETWORKREADER:
return v_networkReaderUnSubscribe(v_networkReader(r),d);
default:
OS_REPORT_1(OS_ERROR,"v_readerUnSubscribe failed",0,
"illegal reader kind (%d) specified",
v_objectKind(r));
assert(FALSE);
}
return TRUE;
}
c_bool
v_readerUnSubscribeGroup(
v_reader reader,
v_group group)
{
c_bool result;
assert(C_TYPECHECK(reader, v_reader));
switch(v_objectKind(reader)) {
case K_DATAREADER:
result = v_dataReaderUnSubscribeGroup(v_dataReader(reader), group);
break;
case K_GROUPQUEUE:
result = v_groupStreamUnSubscribeGroup(v_groupStream(reader), group);
break;
case K_NETWORKREADER:
result = v_networkReaderUnSubscribeGroup(v_networkReader(reader), group);
break;
default:
OS_REPORT_1(OS_ERROR,"v_readerUnSubscribeGroup failed",0,
"illegal reader kind (%d) specified",
v_objectKind(reader));
assert(FALSE);
result = FALSE;
}
return result;
}
u_result
u_readerGetMatchedPublications (
u_reader _this,
v_statusAction action,
c_voidp arg)
{
v_dataReader reader;
v_spliced spliced;
v_kernel kernel;
u_result result;
c_iter participants;
v_participant participant;
result = U_RESULT_PRECONDITION_NOT_MET;
if (_this != NULL) {
result = u_entityReadClaim(u_entity(_this), (v_entity*)(&reader));
if ((result == U_RESULT_OK) && (reader != NULL)) {
kernel = v_objectKernel(reader);
participants = v_resolveParticipants(kernel, V_SPLICED_NAME);
assert(c_iterLength(participants) == 1);
participant = v_participant(c_iterTakeFirst(participants));
spliced = v_spliced(participant);
c_free(participant);
c_iterFree(participants);
result = u_resultFromKernel(
v_splicedGetMatchedPublications(spliced, v_dataReader(reader), action, arg));
u_entityRelease(u_entity(_this));
}
}
return result;
}
void
v_publicDispose(
v_public o)
{
assert(C_TYPECHECK(o,v_public));
if (o == NULL) {
return;
}
switch(v_objectKind(o)) {
case K_PARTICIPANT: v_participantDeinit(v_participant(o)); break;
case K_PUBLISHER: v_publisherDeinit(v_publisher(o)); break;
case K_SUBSCRIBER: v_subscriberDeinit(v_subscriber(o)); break;
case K_WRITER: v_writerDeinit(v_writer(o)); break;
case K_DATAREADER: v_dataReaderDeinit(v_dataReader(o)); break;
case K_DELIVERYSERVICE:v_deliveryServiceDeinit(v_deliveryService(o)); break;
case K_NETWORKREADER: v_networkReaderDeinit(v_networkReader(o)); break;
case K_READER: v_readerDeinit(v_reader(o)); break;
case K_GROUPQUEUE: v_groupQueueDeinit(v_groupQueue(o)); break;
case K_TOPIC: v_topicDeinit(v_topic(o)); break;
case K_ENTITY: break;
case K_DOMAIN: v_partitionDeinit(v_partition(o)); break;
case K_GROUP: v_groupDeinit(v_group(o)); break;
case K_SERVICEMANAGER: /* Is never freed! */ break;
case K_SPLICED: v_splicedDeinit(v_spliced(o)); break;
case K_NETWORKING:
case K_DURABILITY:
case K_CMSOAP:
case K_SERVICE: v_serviceDeinit(v_service(o)); break;
case K_SERVICESTATE: /* Is never freed! */ break;
case K_CONFIGURATION: break;
case K_QUERY:
OS_REPORT(OS_ERROR, "v_publicDispose failure",
0, "deinit of abstract class K_QUERY");
break;
case K_DATAREADERQUERY:
v_dataReaderQueryDeinit(v_dataReaderQuery(o));
break;
case K_DATAVIEWQUERY:
v_dataViewQueryDeinit(v_dataViewQuery(o));
break;
case K_DATAVIEW: v_dataViewDeinit(v_dataView(o)); break;
case K_WAITSET: v_waitsetDeinit(v_waitset(o)); break;
case K_WRITERINSTANCE:
v_writerInstanceDeinit(v_writerInstance(o));
break;
case K_DATAREADERINSTANCE:
v_dataReaderInstanceDeinit(v_dataReaderInstance(o));
break;
case K_DATAVIEWINSTANCE:
v_dataViewInstanceDeinit(v_dataViewInstance(o));
break;
default:
OS_REPORT_1(OS_ERROR,"v_publicDispose failed",0,
"illegal entity kind (%d) specified",v_objectKind(o));
assert(FALSE);
break;
}
c_free(o);
}
void
v_dataReaderSampleFree(
v_dataReaderSample sample)
{
v_dataReaderInstance instance;
v_index index;
v_dataReader dataReader;
v_message message;
if (sample) {
assert(C_TYPECHECK(sample, v_dataReaderSample));
if (c_refCount(sample) == 1) {
/* Free the slave-samples as well */
instance = v_readerSample(sample)->instance;
index = v_index(instance->index);
dataReader = v_dataReader(index->reader);
if (!v_readerSampleTestState(sample,L_READ)) {
dataReader->notReadCount--;
}
#ifdef _SL_
if (dataReader->cachedSampleCount < 1000) {
message = v_dataReaderSampleMessage(sample);
c_free(message);
v_dataReaderSampleTemplate(sample)->message = NULL;
sample->prev = dataReader->cachedSample;
dataReader->cachedSample = sample;
dataReader->cachedSampleCount++;
#else
if (dataReader->cachedSample == NULL) {
dataReader->cachedSample = sample;
message = v_dataReaderSampleMessage(sample);
c_free(message);
v_dataReaderSampleTemplate(sample)->message = NULL;
#endif
} else {
c_free(sample);
}
} else {
c_free(sample);
}
}
}
void
v_dataReaderSampleRemoveFromLifespanAdmin(
v_dataReaderSample sample)
{
v_dataReaderInstance instance;
v_index index;
if (sample) {
assert(C_TYPECHECK(sample, v_dataReaderSample));
instance = v_readerSample(sample)->instance;
index = v_index(instance->index);
v_lifespanAdminRemove(v_dataReaderEntry(index->entry)->lifespanAdmin,
v_lifespanSample(sample));
}
}
void
v_subscriberFree(
v_subscriber s)
{
v_kernel kernel;
v_participant p;
v_reader o;
v_entity found;
c_long sc;
kernel = v_objectKernel(s);
sc = (c_long)pa_decrement(&(s->shareCount));
if (sc > 0) return;
if(sc == 0){
v_observableRemoveObserver(v_observable(kernel->groupSet),v_observer(s), NULL);
if (s->qos->share.enable) {
found = v_removeShare(kernel,v_entity(s));
assert(found == v_entity(s));
c_free(found);
}
while ((o = c_take(s->readers)) != NULL) {
switch (v_objectKind(o)) {
case K_DATAREADER:
v_dataReaderFree(v_dataReader(o));
break;
case K_DELIVERYSERVICE:
v_deliveryServiceFree(v_deliveryService(o));
break;
case K_GROUPQUEUE:
v_groupQueueFree(v_groupQueue(o));
break;
case K_NETWORKREADER:
v_networkReaderFree(v_networkReader(o));
break;
default:
OS_REPORT_1(OS_ERROR,
"v_subscriber", 0,
"Unknown reader %d",
v_objectKind(o));
assert(FALSE);
break;
}
c_free(o);
}
p = v_participant(s->participant);
if (p != NULL) {
v_participantRemove(p,v_entity(s));
s->participant = NULL;
}
v_publicFree(v_public(s));
} else {
OS_REPORT_1(OS_ERROR, "v_subscriberFree", 0,
"subscriber already freed (shareCount is now %d).", sc);
assert(sc == 0);
}
}
static void
getCopyInfo (
v_entity e,
c_voidp argument)
{
v_topic kt;
c_type sampleType;
c_property messageAttr;
_DataReader dataReader = (_DataReader)argument;
sampleType = v_dataReaderSampleType(v_dataReader(e));
kt = v_dataReaderGetTopic(v_dataReader(e));
dataReader->userdataOffset = v_topicDataOffset(kt);
c_free(kt);
messageAttr = c_property(c_metaResolve(c_metaObject(sampleType),"message"));
dataReader->messageOffset = messageAttr->offset;
c_free(messageAttr);
}
c_char*
cmx_dataReaderInit(
v_dataReader entity)
{
char buf[512];
v_dataReader dr;
dr = v_dataReader(entity);
snprintf(buf, 24, "<kind>DATAREADER</kind>");
return (c_char*)(os_strdup(buf));
}
/* ----------------------------------- Private ------------------------------ */
static c_bool
qosChangedAction(
c_object o,
c_voidp arg)
{
v_dataReader r;
if (v_objectKind(o) == K_DATAREADER) {
r = v_dataReader(o);
v_dataReaderUpdateConnections(r,(v_dataReaderConnectionChanges *)arg);
v_dataReaderNotifyChangedQos(r);
}
return TRUE;
}
u_instanceHandle
u_instanceHandleFix(
u_instanceHandle _this,
v_collection reader)
{
u_instanceHandleTranslator translator;
struct v_publicationInfo *data;
v_topic topic;
v_message message;
v_public instance;
translator.handle = _this;
if (translator.lid.lifecycleId & HANDLE_GLOBAL_MASK) {
/* Is a GID therefore fix handle by lookup. */
while (v_objectKind(v_entity(reader)) == K_QUERY ||
v_objectKind(v_entity(reader)) == K_DATAREADERQUERY ||
v_objectKind(v_entity(reader)) == K_DATAVIEWQUERY) {
/* If the entity derives from a query entity it can be cast to a v_query */
reader = v_querySource(v_query(reader));
}
while (v_objectKind(v_entity(reader)) == K_DATAVIEW) {
reader = v_collection(v_dataViewGetReader(v_dataView(reader)));
}
topic = v_dataReaderGetTopic(v_dataReader(reader));
message = v_topicMessageNew(topic);
data = (c_voidp)C_DISPLACE(message, v_topicDataOffset(topic));
data->key = u_instanceHandleToGID(_this);
instance = (v_public)v_dataReaderLookupInstance(v_dataReader(reader),
message);
translator.handle = u_instanceHandleNew(instance);
c_free(instance);
c_free(topic);
c_free(message);
}
return translator.handle;
}
v_result
v_readerSetQos(
v_reader r,
v_readerQos qos)
{
v_result result;
v_qosChangeMask cm;
assert(C_TYPECHECK(r,v_reader));
v_readerEntrySetLock(r);
result = v_readerQosSet(r->qos, qos, v_entity(r)->enabled, &cm);
v_readerEntrySetUnlock(r);
if ((result == V_RESULT_OK) && (cm != 0)) {
if (v_objectKind(r) == K_DATAREADER) {
v_dataReaderNotifyChangedQos(v_dataReader(r));
}
}
return result;
}
/**************************************************************
* Protected functions
**************************************************************/
c_bool
v_readerSubscribeGroup(
v_reader _this,
v_group group)
{
c_bool result;
assert(C_TYPECHECK(_this, v_reader));
switch(v_objectKind(_this)) {
case K_DATAREADER:
/* ES, dds1576: For the K_DATAREADER object we need to verify if
* the access rights are correct. No subscriptions may be made onto
* groups which have a v_accessMode of write only.
*/
if(v_groupPartitionAccessMode(group) == V_ACCESS_MODE_READ_WRITE ||
v_groupPartitionAccessMode(group) == V_ACCESS_MODE_READ)
{
result = v_dataReaderSubscribeGroup(v_dataReader(_this), group);
readerGetHistoricalData(_this);
} else
{
result = FALSE;
}
break;
case K_GROUPQUEUE:
result = v_groupStreamSubscribeGroup(v_groupStream(_this), group);
break;
case K_NETWORKREADER:
result = v_networkReaderSubscribeGroup(v_networkReader(_this), group);
readerGetHistoricalData(_this);
break;
default:
OS_REPORT_1(OS_ERROR,"v_readerSubscribeGroup failed",0,
"illegal reader kind (%d) specified",
v_objectKind(_this));
assert(FALSE);
result = FALSE;
}
return result;
}
v_query
v_queryNew (
v_collection source,
const c_char *name,
q_expr predicate,
c_value params[])
{
v_query q;
v_dataReader reader;
v_dataView readerView;
assert(C_TYPECHECK(source,v_collection));
q = NULL;
switch(v_objectKind(source)) {
case K_DATAREADER:
reader = v_dataReader(source);
q = v_query(v_dataReaderQueryNew(
reader,
name,
predicate,
params));
break;
case K_DATAVIEW:
readerView = v_dataView(source);
q = v_query(v_dataViewQueryNew(
readerView,
name,
predicate,
params));
break;
default:
OS_REPORT_1(OS_ERROR,
"v_queryNew failed",0,
"illegal source kind (%d) specified",
v_objectKind(source));
}
return q;
}
void
readerDeadlineMissed(
v_leaseAction leaseAction,
c_time now)
{
v_object o;
v_handleResult r;
assert(leaseAction != NULL);
assert(C_TYPECHECK(leaseAction, v_leaseAction));
r = v_handleClaim(leaseAction->actionObject, &o);
if (r == V_HANDLE_OK)
{
v_dataReaderCheckDeadlineMissed(v_dataReader(o), now);
r = v_handleRelease(leaseAction->actionObject);
if(r != V_HANDLE_OK)
{
OS_REPORT_1(OS_WARNING, "v_leaseManager", 0,
"Handle release failed with result code %d ", r);
}
}
}
void
cmx_readerSnapshotNewAction(
v_public p,
c_voidp args)
{
v_dataReader reader;
c_iter instances;
v_dataReaderInstance instance;
v_dataReaderSample sample;
v_query query;
c_bool release;
sd_serializer ser;
sd_serializedData data;
struct cmx_readerSnapshotArg* arg;
release = FALSE;
arg = (struct cmx_readerSnapshotArg*)args;
reader = NULL;
instances = NULL;
ser = NULL;
switch(v_object(p)->kind){
case K_DATAREADER:
reader = v_dataReader(p);
arg->success = TRUE;
arg->snapshot = cmx_readerSnapshot(os_malloc(C_SIZEOF(cmx_readerSnapshot)));
v_observerLock(v_observer(reader));
if(reader->index->objects){
instances = ospl_c_select(reader->index->notEmptyList, 0);
}
break;
case K_QUERY:
case K_DATAREADERQUERY:
query = v_query(p);
reader = v_dataReader(v_querySource(query));
if(reader != NULL){
release = TRUE;
arg->success = TRUE;
arg->snapshot = cmx_readerSnapshot(os_malloc(C_SIZEOF(cmx_readerSnapshot)));
v_observerLock(v_observer(reader));
switch(v_object(query)->kind){
case K_DATAREADERQUERY:
if(v_dataReaderQuery(query)->instanceQ){
instances = ospl_c_select((c_collection)(v_dataReaderQuery(query)->instanceQ), 0);
}
break;
default:
OS_REPORT(OS_ERROR, CM_XML_CONTEXT, 0,
"cmx_readerSnapshotNewAction unknown kind (%d).",
v_object(query)->kind);
break;
}
}
break;
default:
break;
}
if(arg->success == TRUE){
arg->snapshot->samples = c_iterNew(NULL);
}
if(instances != NULL){
v_dataReaderSample sampleShallowCopy = NULL;
instance = v_dataReaderInstance(c_iterTakeFirst(instances));
while(instance != NULL){
v_state ivState = instance->_parent._parent.state & (L_DISPOSED | L_NOWRITERS | L_NEW);
sample = v_dataReaderInstanceOldest(instance);
if (sample != NULL) {
do {
v_state state = ivState | ((sample->_parent.sampleState & (L_READ | L_LAZYREAD)) ? L_READ : 0);
if (sampleShallowCopy == NULL) {
sampleShallowCopy = c_new(c_getType(c_object(sample)));
}
memcpy(sampleShallowCopy, sample, c_typeSize(c_getType(sampleShallowCopy)));
sampleShallowCopy->newer = NULL;
sampleShallowCopy->_parent.sampleState &= ~(L_DISPOSED | L_NOWRITERS | L_NEW | L_READ | L_LAZYREAD);
sampleShallowCopy->_parent.sampleState |= state;
if(ser == NULL){
ser = sd_serializerXMLNewTyped(c_getType(c_object(sampleShallowCopy)));
}
data = sd_serializerSerialize(ser, c_object(sampleShallowCopy));
arg->snapshot->samples = c_iterInsert(arg->snapshot->samples, sd_serializerToString(ser, data));
sd_serializedDataFree(data);
sample = sample->newer;
} while (sample != NULL);
}
c_free(instance);
instance = v_dataReaderInstance(c_iterTakeFirst(instances));
}
c_iterFree(instances);
if (sampleShallowCopy != NULL) {
memset(sampleShallowCopy, 0, c_typeSize(c_getType(sampleShallowCopy)));
c_free(sampleShallowCopy);
}
}
if(reader != NULL){
v_observerUnlock(v_observer(reader));
if(release == TRUE){
c_free(reader);
}
}
if(ser != NULL){
sd_serializerFree(ser);
}
}
void
cmx_readerSnapshotNewAction(
v_entity e,
c_voidp args)
{
v_dataReader reader;
c_iter instances;
v_dataReaderInstance instance;
v_dataReaderSample sample, prev;
v_query query;
c_bool release;
sd_serializer ser;
sd_serializedData data;
struct cmx_readerSnapshotArg* arg;
release = FALSE;
arg = (struct cmx_readerSnapshotArg*)args;
reader = NULL;
instances = NULL;
ser = NULL;
switch(v_object(e)->kind){
case K_DATAREADER:
reader = v_dataReader(e);
arg->success = TRUE;
arg->snapshot = cmx_readerSnapshot(os_malloc(C_SIZEOF(cmx_readerSnapshot)));
v_observerLock(v_observer(reader));
if(reader->index->objects){
instances = c_select(reader->index->notEmptyList, 0);
}
break;
case K_QUERY:
case K_DATAREADERQUERY:
query = v_query(e);
reader = v_dataReader(v_querySource(query));
if(reader != NULL){
release = TRUE;
arg->success = TRUE;
arg->snapshot = cmx_readerSnapshot(os_malloc(C_SIZEOF(cmx_readerSnapshot)));
v_observerLock(v_observer(reader));
switch(v_object(query)->kind){
case K_DATAREADERQUERY:
if(v_dataReaderQuery(query)->instanceQ){
instances = c_select((c_collection)(v_dataReaderQuery(query)->instanceQ), 0);
}
break;
default:
OS_REPORT_1(OS_ERROR, CM_XML_CONTEXT, 0,
"cmx_readerSnapshotNewAction unknown kind (%d).",
v_object(query)->kind);
break;
}
}
break;
default:
break;
}
if(arg->success == TRUE){
arg->snapshot->samples = c_iterNew(NULL);
}
if(instances != NULL){
instance = v_dataReaderInstance(c_iterTakeFirst(instances));
while(instance != NULL){
sample = c_keep(v_dataReaderInstanceHead(instance));
if(sample != NULL){
prev = sample->prev;
sample->prev = NULL;
if(ser == NULL){
ser = sd_serializerXMLNewTyped(c_getType(c_object(sample)));
}
data = sd_serializerSerialize(ser, c_object(sample));
arg->snapshot->samples = c_iterInsert(arg->snapshot->samples,
sd_serializerToString(ser, data));
sd_serializedDataFree(data);
sample->prev = prev;
c_free(sample);
}
c_free(instance);
instance = v_dataReaderInstance(c_iterTakeFirst(instances));
}
c_iterFree(instances);
}
if(reader != NULL){
v_observerUnlock(v_observer(reader));
if(release == TRUE){
c_free(reader);
}
}
if(ser != NULL){
sd_serializerFree(ser);
}
}
d_readerRequest
d_readerRequestNew(
d_admin admin,
v_handle source,
c_char* filter,
c_char** filterParams,
c_long filterParamsCount,
struct v_resourcePolicy resourceLimits,
c_time minSourceTimestamp,
c_time maxSourceTimestamp)
{
d_readerRequest request;
c_long i;
v_handleResult handleResult;
v_reader vreader, *vreaderPtr;
c_iter partitions;
v_partition partition;
v_topic topic;
d_group dgroup;
c_char *topicName;
d_quality quality;
request = d_readerRequest(os_malloc(C_SIZEOF(d_readerRequest)));
if(request){
d_lockInit(d_lock(request), D_READER_REQUEST, d_readerRequestDeinit);
request->admin = admin;
request->readerHandle.index = source.index;
request->readerHandle.serial = source.serial;
request->readerHandle.server = source.server;
request->requests = d_tableNew(d_chainCompare, d_chainFree);
if(filter){
request->filter = os_strdup(filter);
} else {
request->filter = NULL;
}
request->resourceLimits = resourceLimits;
request->minSourceTimestamp = minSourceTimestamp;
request->maxSourceTimestamp = maxSourceTimestamp;
request->filterParamsCount = filterParamsCount;
if(filterParamsCount > 0){
request->filterParams = (c_char**)(os_malloc(
filterParamsCount*sizeof(c_char*)));
for(i=0; i<filterParamsCount; i++){
request->filterParams[i] = os_strdup(filterParams[i]);
}
} else {
request->filterParams = NULL;
}
request->groups = d_tableNew(d_groupCompare, d_groupFree);
handleResult = v_handleClaim(source, (v_object*)(vreaderPtr = &vreader));
if(handleResult == V_HANDLE_OK){
if(v_object(vreader)->kind == K_DATAREADER){
topic = v_dataReaderGetTopic(v_dataReader(vreader));
topicName = v_entity(topic)->name;
partitions = ospl_c_select(v_subscriber(vreader->subscriber)->partitions->partitions, 0);
partition = v_partition(c_iterTakeFirst(partitions));
while(partition){
quality.seconds = 0;
quality.nanoseconds = 0;
dgroup = d_groupNew(
v_entity(partition)->name, topicName,
topic->qos->durability.kind,
D_GROUP_KNOWLEDGE_UNDEFINED,
quality);
d_tableInsert(request->groups, dgroup);
c_free(partition);
partition = v_partition(c_iterTakeFirst(partitions));
}
c_free(topic);
} else {
d_readerRequestFree(request);
request = NULL;
}
v_handleRelease(source);
} else {
d_readerRequestFree(request);
request = NULL;
}
}
return request;
}
v_dataReaderSample
v_dataReaderSampleNew(
v_dataReaderInstance instance,
v_message message)
{
v_dataReader dataReader;
v_dataReaderSample sample;
v_readerQos readerQos;
v_index index;
os_timeE msgEpoch;
assert(instance != NULL);
assert(C_TYPECHECK(message,v_message));
index = v_index(instance->index);
dataReader = v_dataReader(index->reader);
readerQos = v_reader(dataReader)->qos;
assert(readerQos);
sample = v_dataReaderSample(c_new(dataReader->sampleType));
if (sample != NULL) {
v_readerSample(sample)->instance = (c_voidp)instance;
v_readerSample(sample)->viewSamples = NULL;
v_readerSample(sample)->sampleState = 0;
sample->insertTime = os_timeWGet();
/* The expiry time calculation is dependent on the DestinationOrderQos(readerQos->orderby.v.kind):
* In case of the by_reception_timestamp kind the expiry time is determined based on insertion time(sample->insertTime).
* In case of the by_source_timestamp kind the expiry time is determined based on source time (message->writeTime).
*/
msgEpoch = os_timeEGet();
if (readerQos->orderby.v.kind == V_ORDERBY_SOURCETIME) {
/* assuming wall clocks of source and destination are aligned!
* calculate the age of the message and then correct the message epoch.
*/
os_duration message_age = os_timeWDiff(os_timeWGet(), message->writeTime);
msgEpoch = os_timeESub(msgEpoch, message_age);
}
v_dataReaderSampleTemplate(sample)->message = c_keep(message);
sample->disposeCount = instance->disposeCount;
sample->noWritersCount = instance->noWritersCount;
sample->publicationHandle = message->writerGID;
sample->readId = 0;
sample->newer = NULL;
/* When both ReaderLifespanQos(readerQos->lifespan.used) and the inline LifespanQos (v_messageQos_getLifespanPeriod(message->qos))
* are set the expiryTime will be set to the earliest time among them.
*/
if (message->qos) {
os_duration lifespan = v_messageQos_getLifespanPeriod(message->qos);
if (readerQos->lifespan.v.used) {
if (os_durationCompare(readerQos->lifespan.v.duration, lifespan) == OS_LESS) {
v_lifespanSample(sample)->expiryTime = os_timeEAdd(msgEpoch, readerQos->lifespan.v.duration);
} else {
v_lifespanSample(sample)->expiryTime = os_timeEAdd(msgEpoch, lifespan);
}
v_lifespanAdminInsert(v_dataReaderEntry(index->entry)->lifespanAdmin, v_lifespanSample(sample));
} else {
if (OS_DURATION_ISINFINITE(lifespan)) {
v_lifespanSample(sample)->expiryTime = OS_TIMEE_INFINITE;
} else {
v_lifespanSample(sample)->expiryTime = os_timeEAdd(msgEpoch, lifespan);
v_lifespanAdminInsert(v_dataReaderEntry(index->entry)->lifespanAdmin, v_lifespanSample(sample));
}
}
} else {
if (readerQos->lifespan.v.used) {
v_lifespanSample(sample)->expiryTime = os_timeEAdd(msgEpoch,readerQos->lifespan.v.duration);
v_lifespanAdminInsert(v_dataReaderEntry(index->entry)->lifespanAdmin, v_lifespanSample(sample));
} else {
v_lifespanSample(sample)->expiryTime = OS_TIMEE_INFINITE;
}
}
} else {
OS_REPORT(OS_FATAL, OS_FUNCTION, V_RESULT_INTERNAL_ERROR, "Failed to allocate v_dataReaderSample.");
}
return sample;
}
v_dataReaderSample
v_dataReaderSampleNew(
v_dataReaderInstance instance,
v_message message)
{
v_dataReader dataReader;
v_dataReaderSample sample;
v_readerQos readerQos;
v_index index;
assert(instance != NULL);
assert(C_TYPECHECK(message,v_message));
index = v_index(instance->index);
dataReader = v_dataReader(index->reader);
readerQos = v_reader(dataReader)->qos;
if (dataReader->cachedSample != NULL) {
sample = dataReader->cachedSample;
/* Unfinished proto for cache size control
* #define _SL_
*/
#ifdef _SL_
dataReader->cachedSample = sample->prev;
sample->prev = NULL;
dataReader->cachedSampleCount--;
#else
dataReader->cachedSample = NULL;
#endif
} else {
sample = v_dataReaderSample(c_extentCreate(dataReader->sampleExtent));
}
v_readerSample(sample)->instance = (c_voidp)instance;
v_readerSample(sample)->viewSamples = NULL;
if ((message->transactionId != 0) &&
(v_reader(dataReader)->subQos->presentation.coherent_access))
{
v_readerSample(sample)->sampleState = L_TRANSACTION;
} else {
v_readerSample(sample)->sampleState = 0;
}
#ifdef _NAT_
sample->insertTime = v_timeGet();
#else
#define _INCORRECT_BUT_LOW_INSERT_LATENCY_
#ifdef _INCORRECT_BUT_LOW_INSERT_LATENCY_
if (v_timeIsZero(v_reader(dataReader)->qos->latency.duration)) {
sample->insertTime = v_timeGet();
} else {
sample->insertTime = message->allocTime;
}
#else
sample->insertTime = v_timeGet();
#endif
#endif
if (readerQos->lifespan.used) {
v_lifespanSample(sample)->expiryTime =
c_timeAdd(sample->insertTime, readerQos->lifespan.duration);
} else {
v_lifespanSample(sample)->expiryTime =
c_timeAdd(sample->insertTime,
v_messageQos_getLifespanPeriod(message->qos));
}
sample->disposeCount = instance->disposeCount;
sample->noWritersCount = instance->noWritersCount;
sample->publicationHandle = message->writerGID;
sample->readId = 0;
sample->prev = NULL;
assert(message);
v_dataReaderSampleTemplate(sample)->message = c_keep(message);
v_lifespanAdminInsert(v_dataReaderEntry(index->entry)->lifespanAdmin,
v_lifespanSample(sample));
dataReader->notReadCount++;
return sample;
}
/**
* PRE: v_observerLock has been called.
*
* When the text 'intentionally no break' is set after a case label
* the class specified by the label has not implemented the notify
* method.
*/
void
v_observerNotify(
v_observer _this,
v_event event,
c_voidp userData)
{
/* This Notify method is part of the observer-observable pattern.
* It is designed to be invoked when _this object as observer receives
* an event from an observable object.
* It must be possible to pass the event to the subclass of itself by
* calling <subclass>Notify(_this, event, userData).
* This implies that _this cannot be locked within any Notify method
* to avoid deadlocks.
* For consistency _this must be locked by v_observerLock(_this) before
* calling this method.
*/
c_ulong trigger;
assert(_this != NULL);
assert(C_TYPECHECK(_this,v_observer));
/* The observer will be made insensitive to event as soon as the
* observer is deinitialized. However it may be that destruction
* of the observer has started before the deinit of the observer
* is called. In that case the V_EVENT_OBJECT_DESTROYED flag will
* be set to avoid processing of incomming events.
*/
if ((_this->eventFlags & V_EVENT_OBJECT_DESTROYED) == 0) {
/* The observer is valid so the event can be processed.
*/
if (event != NULL ) {
trigger = event->kind & _this->eventMask;
} else {
/* NULL-event always notifies observers */
trigger = V_EVENT_TRIGGER;
}
/* The following code invokes the observers subclass specific
* notification method.
* This is a bit strange that the observer has knowledge about
* the subclass notification methods, a better model is that
* subclasses register the notification method to the observer
* instead. The reason for this model is that registering a
* function pointer is only valid in the process scope and this
* method will typically be called from another process.
*/
if (trigger != 0) {
switch (v_objectKind(_this)) {
case K_DATAREADER:
v_dataReaderNotify(v_dataReader(_this), event, userData);
break;
case K_WAITSET:
v_waitsetNotify(v_waitset(_this), event, userData);
break;
case K_PARTICIPANT:
v_participantNotify(v_participant(_this), event, userData);
break;
case K_TOPIC:
v_topicNotify(v_topic(_this), event, userData);
break;
case K_QUERY:
/* v_queryNotify(v_query(_this), event, userData); */
break;
case K_SPLICED: /* intentionally no break */
case K_SERVICE:
case K_NETWORKING:
case K_DURABILITY:
case K_CMSOAP:
v_serviceNotify(v_service(_this), event, userData);
break;
case K_SERVICEMANAGER:
v_serviceManagerNotify(v_serviceManager(_this), event, userData);
break;
case K_WRITER: /* no action for the following observers */
case K_PUBLISHER:
case K_SUBSCRIBER:
case K_GROUPQUEUE:
break;
default:
OS_REPORT_1(OS_INFO,"Kernel Observer",0,
"Notify an unknown observer type: %d",
v_objectKind(_this));
break;
}
/*
* Only trigger condition variable if at least
* one thread is waiting AND the event is seen for the first time.
*/
if ((_this->waitCount > 0) &&
((trigger == V_EVENT_TRIGGER) || (~_this->eventFlags & trigger)))
{
_this->eventFlags |= trigger; /* store event */
c_condBroadcast(&_this->cv);
} else {
_this->eventFlags |= trigger; /* store event */
}
}
} /* else observer object destroyed, skip notification */
}
void
cmx_readerDataTypeAction(
v_entity entity,
c_voidp args)
{
sd_serializer ser;
sd_serializedData data;
c_type type;
v_dataReader r;
v_query query;
v_topic topic;
struct cmx_readerArg *arg;
arg = (struct cmx_readerArg *)args;
type = NULL;
switch(v_object(entity)->kind){
case K_DATAREADER:
r = v_dataReader(entity);
v_observerLock(v_observer(r));
topic = v_dataReaderGetTopic(r);
type = v_topicDataType(topic);
c_free(topic);
v_observerUnlock(v_observer(r));
break;
case K_DATAREADERQUERY:
query = v_query(entity);
r = v_dataReader(v_querySource(query));
v_observerLock(v_observer(r));
topic = v_dataReaderGetTopic(r);
type = v_topicDataType(topic);
c_free(topic);
v_observerUnlock(v_observer(r));
c_free(r);
break;
case K_NETWORKREADER:
OS_REPORT(OS_ERROR, CM_XML_CONTEXT, 0,
"Resolving data type of networkReader unsupported.\n");
assert(FALSE);
break;
case K_GROUPQUEUE:
OS_REPORT(OS_ERROR, CM_XML_CONTEXT, 0,
"Resolving data type of groupQueue unsupported.\n");
assert(FALSE);
break;
default:
OS_REPORT(OS_ERROR, CM_XML_CONTEXT, 0,
"Trying to resolve dataType of unknown reader type.\n");
assert(FALSE);
break;
}
if(type != NULL){
ser = sd_serializerXMLMetadataNew(c_getBase(type));
data = sd_serializerSerialize(ser, type);
arg->result = sd_serializerToString(ser, data);
sd_serializedDataFree(data);
sd_serializerFree(ser);
}
}
