v_subscriber
v_participantGetBuiltinSubscriber(
v_participant p)
{
v_subscriberQos sQos;
v_readerQos rQos;
v_kernel kernel;
c_bool create_builtin_readers = FALSE;
assert(p != NULL);
assert(C_TYPECHECK(p, v_participant));
c_mutexLock(&p->builtinLock);
if (p->builtinSubscriber == NULL) {
kernel = v_objectKernel(p);
sQos = v_subscriberQosNew(kernel, NULL);
sQos->presentation.access_scope = V_PRESENTATION_TOPIC;
c_free(sQos->partition);
sQos->partition = c_stringNew(c_getBase(c_object(kernel)),
V_BUILTIN_PARTITION);
sQos->entityFactory.autoenable_created_entities = TRUE;
p->builtinSubscriber = v_subscriberNew(p, V_BUILTINSUBSCRIBER_NAME,
sQos, TRUE);
v_subscriberQosFree(sQos);
create_builtin_readers = TRUE;
c_mutexUnlock(&p->builtinLock);
assert(p->builtinSubscriber != NULL);
rQos = v_readerQosNew(kernel, NULL);
rQos->durability.kind = V_DURABILITY_TRANSIENT;
rQos->reliability.kind = V_RELIABILITY_RELIABLE;
rQos->history.kind = V_HISTORY_KEEPLAST;
rQos->history.depth = 1;
#define _CREATE_READER_(topicName) {\
q_expr expr; \
v_dataReader dr; \
expr = q_parse("select * from " topicName);\
dr = v_dataReaderNew(p->builtinSubscriber, topicName "Reader", \
expr, NULL, rQos, TRUE);\
c_free(dr); \
q_dispose(expr); \
}
_CREATE_READER_(V_PARTICIPANTINFO_NAME)
_CREATE_READER_(V_TOPICINFO_NAME)
_CREATE_READER_(V_PUBLICATIONINFO_NAME)
_CREATE_READER_(V_SUBSCRIPTIONINFO_NAME)
#undef _CREATE_READER_
v_readerQosFree(rQos);
} else {
c_mutexUnlock(&p->builtinLock);
}
return c_keep(p->builtinSubscriber);
}
v_subscriberQos
v_subscriberGetQos(
v_subscriber s)
{
v_subscriberQos qos;
assert(s != NULL);
c_lockRead(&s->lock);
qos = v_subscriberQosNew(v_objectKernel(s), s->qos);
c_lockUnlock(&s->lock);
return qos;
}
v_subscriber
v_subscriberNew(
v_participant p,
const c_char *name,
v_subscriberQos qos,
c_bool enable)
{
v_kernel kernel;
v_subscriber s;
v_subscriberQos q;
v_entity found;
v_accessMode access;
kernel = v_objectKernel(p);
/* ES, dds1576: If a partition policy was provided then we need to verify
* if the partition policy does not contain any partition expressions for
* which read access is not allowed.
* If read access is not allowed for one of the partitions listed in the
* partition policy of the qos, then the subscriber will not be created at
* all.
*/
if(qos && qos->partition)
{
access = v_kernelPartitionAccessMode(kernel, qos->partition);
} else
{
access = V_ACCESS_MODE_READ_WRITE;/* default */
}
if(access == V_ACCESS_MODE_READ_WRITE || access == V_ACCESS_MODE_READ)
{
q = v_subscriberQosNew(kernel,qos);
if (q != NULL) {
s = v_subscriber(v_objectNew(kernel,K_SUBSCRIBER));
v_observerInit(v_observer(s),name, NULL, enable);
s->qos = q;
c_mutexInit(&s->sharesMutex, SHARED_MUTEX);
if (q->share.enable) {
v_lockShares(kernel);
found = v_addShareUnsafe(kernel,v_entity(s));
if (found != v_entity(s)) {
/* Make sure to set the partition list to NULL, because
* v_publicFree will cause a crash in the v_subscriberDeinit
* otherwise.
*/
s->partitions = NULL;
/*v_publicFree to free reference held by the handle server.*/
v_publicFree(v_public(s));
/*Now free the local reference as well.*/
c_free(s);
pa_increment(&(v_subscriber(found)->shareCount));
v_unlockShares(kernel);
return c_keep(found);
}
s->shares = c_tableNew(v_kernelType(kernel,K_READER),
"qos.share.name");
} else {
s->shares = NULL;
}
s->shareCount = 1;
s->partitions = v_partitionAdminNew(kernel);
s->readers = c_setNew(v_kernelType(kernel,K_READER));
if (q->share.enable) {
s->participant = kernel->builtin->participant;
} else {
s->participant = p;
}
c_lockInit(&s->lock,SHARED_LOCK);
v_participantAdd(v_participant(s->participant),v_entity(s));
if (q->share.enable) {
v_unlockShares(kernel);
}
if (enable) {
v_subscriberEnable(s);
}
} else {
OS_REPORT(OS_ERROR,
"v_subscriberNew", 0,
"Subscriber not created: inconsistent qos");
s = NULL;
}
} else
{
OS_REPORT(OS_ERROR,
"v_subscriberNew", 0,
"Subscriber not created: Access rights for one of the partitions listed in the partition list was not sufficient (i.e. read or readwrite).");
s = NULL;
}
return s;
}
