DDS_ReturnCode_t DDS_Topic_set_qos (DDS_Topic tp, DDS_TopicQos *qos)
{
Endpoint_t *ep;
Reader_t *rp;
Writer_t *wp;
DDS_ReturnCode_t ret;
ctrc_begind (DCPS_ID, DCPS_T_S_QOS, &tp, sizeof (tp));
ctrc_contd (&qos, sizeof (qos));
ctrc_endd ();
if (!topic_ptr (tp, 1, &ret))
return (ret);
if (qos == DDS_TOPIC_QOS_DEFAULT)
qos = &tp->domain->def_topic_qos;
else if (!qos_valid_topic_qos (qos)) {
ret = DDS_RETCODE_BAD_PARAMETER;
goto done;
}
ret = qos_topic_update (&tp->qos, qos);
if (ret != DDS_RETCODE_OK)
goto done;
/* Update all local Readers associated with topic. */
for (ep = tp->readers; ep; ep = ep->next)
if ((ep->entity.flags & EF_LOCAL) != 0) {
rp = (Reader_t *) ep;
#ifdef RW_LOCKS
lock_take (rp->r_lock);
#endif
disc_reader_update (tp->domain, rp, 1, 0);
#ifdef RW_LOCKS
lock_release (rp->r_lock);
#endif
}
/* Update all local Writers associated with topic. */
for (ep = tp->writers; ep; ep = ep->next)
if ((ep->entity.flags & EF_LOCAL) != 0) {
wp = (Writer_t *) ep;
#ifdef RW_LOCKS
lock_take (wp->w_lock);
#endif
disc_writer_update (tp->domain, wp, 1, 0);
#ifdef RW_LOCKS
lock_release (wp->w_lock);
#endif
}
done:
lock_release (tp->lock);
return (ret);
}
DDS_ReturnCode_t DDS_DomainParticipant_set_default_topic_qos (DDS_DomainParticipant dp,
DDS_TopicQos *qos)
{
DDS_ReturnCode_t ret = DDS_RETCODE_OK;
ctrc_begind (DCPS_ID, DCPS_DP_S_T_QOS, &dp, sizeof (dp));
ctrc_contd (&qos, sizeof (qos));
ctrc_endd ();
/* Get Domain Participant. */
if (!domain_ptr (dp, 1, &ret)) {
log_printf (DCPS_ID, 0, "set_default_topic_qos: domain doesn't exist!\r\n");
return (DDS_RETCODE_ALREADY_DELETED);
}
if (qos == DDS_TOPIC_QOS_DEFAULT)
dp->def_topic_qos = qos_def_topic_qos;
else if (qos_valid_topic_qos (qos))
dp->def_topic_qos = *qos;
else
ret = DDS_RETCODE_INCONSISTENT_POLICY;
lock_release (dp->lock);
return (ret);
}
DDS_Topic DDS_DomainParticipant_create_topic (DDS_DomainParticipant dp,
const char *topic_name,
const char *type_name,
const DDS_TopicQos *qos,
const DDS_TopicListener *listener,
DDS_StatusMask mask)
{
Topic_t *tp;
int new_topic;
ctrc_begind (DCPS_ID, DCPS_DP_C_TOP, &dp, sizeof (dp));
ctrc_contd (topic_name, strlen (topic_name) + 1);
ctrc_contd (type_name, strlen (type_name) + 1);
ctrc_contd (&qos, sizeof (qos));
ctrc_contd (&listener, sizeof (listener));
ctrc_contd (&mask, sizeof (mask));
ctrc_endd ();
prof_start (dcps_create_topic);
/* Get Domain Participant. */
if (!domain_ptr (dp, 1, NULL)) {
log_printf (DCPS_ID, 0, "create_topic(%s): domain doesn't exist!\r\n", topic_name);
return (NULL);
}
if (qos == DDS_TOPIC_QOS_DEFAULT)
qos = &dp->def_topic_qos;
else if (!qos_valid_topic_qos (qos)) {
log_printf (DCPS_ID, 0, "create_topic(%s): invalid topic QoS!\r\n", topic_name);
lock_release (dp->lock);
return (NULL);
}
#ifdef DDS_SECURITY
/* Check if security policy allows this topic. */
if (check_create_topic (dp->participant.p_permissions, topic_name, qos)) {
log_printf (DCPS_ID, 0, "create_topic(%s): topic create not allowed!\r\n", topic_name);
lock_release (dp->lock);
return (NULL);
}
#endif
/* New topic: create topic context. */
tp = topic_create (&dp->participant, NULL, topic_name, type_name, &new_topic);
if (!tp) {
log_printf (DCPS_ID, 0, "create_topic (%s): out of memory for topic!\r\n", topic_name);
lock_release (dp->lock);
return (NULL);
}
/* Set Qos fields appropriately. */
if (new_topic)
tp->qos = qos_topic_new (qos);
else if (tp->nlrefs == 1) /* First real QoS setting. */
qos_topic_update (&tp->qos, qos);
/* Check if the supplied listener can be set on the topic. Ok, if no
listener was previously set or the supplied listener is the same as
the previously set listener. */
if (listener) {
if (!new_topic &&
memcmp (&tp->listener, listener, sizeof (tp->listener)))
log_printf (DCPS_ID, 0, "create_topic(%s): existing listener updated!\r\n", topic_name);
tp->listener = *listener;
}
/* Check if the mask is the same. */
if (!new_topic && mask && mask != tp->mask)
log_printf (DCPS_ID, 0, "create_topic(%s): existing mask updated!\r\n", topic_name);
tp->mask = mask;
lock_release (dp->lock);
if (dp->autoenable)
DDS_Topic_enable ((DDS_Topic) tp);
prof_stop (dcps_create_topic, 1);
return (tp);
}
