void dcps_delete_builtin_readers (DDS_DomainParticipant dp)
{
const BuiltinReaderDesc_t *bip;
Topic_t *tp;
unsigned i;
/* Delete builtin topic readers. */
for (i = 0, bip = bi_readers;
i < sizeof (bi_readers) / sizeof (BuiltinReaderDesc_t);
i++, bip++)
if ((tp = topic_lookup (&dp->participant, bip->topic_name)) != NULL)
delete_builtin_reader (dp, bip->type, tp);
}
DDS_TopicDescription DDS_DomainParticipant_lookup_topicdescription (DDS_DomainParticipant dp,
const char *topic_name)
{
Topic_t *tp;
DDS_TopicDescription td;
ctrc_begind (DCPS_ID, DCPS_DP_L_TD, &dp, sizeof (dp));
ctrc_contd (topic_name, strlen (topic_name));
ctrc_endd ();
/* Get Domain Participant. */
if (!domain_ptr (dp, 1, NULL)) {
log_printf (DCPS_ID, 0, "find_topic(): domain participant not found!\r\n");
return (NULL);
}
if (!topic_name) {
log_printf (DCPS_ID, 0, "find_topic(): topic_name is NULL!\r\n");
return (NULL);
}
tp = topic_lookup (&dp->participant, topic_name);
td = (tp != NULL) && (tp->entity.flags & EF_LOCAL) != 0 ? (DDS_TopicDescription) tp : NULL;
lock_release (dp->lock);
return (td);
}
DDS_Topic DDS_DomainParticipant_find_topic (DDS_DomainParticipant dp,
const char *topic_name,
DDS_Duration_t *timeout)
{
Topic_t *tp;
#ifdef THREADS_USED
int ret;
struct timespec ts;
TopicWait_t *wp, *xp, *prev_wp;
#else
Ticks_t d, now, end_time; /* *10ms */
#endif
ctrc_begind (DCPS_ID, DCPS_DP_F_TOP, &dp, sizeof (dp));
ctrc_contd (topic_name, strlen (topic_name) + 1);
ctrc_contd (timeout, sizeof (DDS_Duration_t));
ctrc_endd ();
/* Get Domain Participant. */
if (!domain_ptr (dp, 1, NULL)) {
log_printf (DCPS_ID, 0, "find_topic(): domain participant not found!\r\n");
return (NULL);
}
tp = topic_lookup (&dp->participant, topic_name);
if (tp) {
if (!lock_take (tp->lock)) {
tp->entity.flags |= EF_LOCAL;
tp->nlrefs++;
lock_release (tp->lock);
}
lock_release (dp->lock);
return ((DDS_Topic) tp);
}
#ifdef THREADS_USED
for (wp = dp->topic_wait; wp; wp = wp->next)
if (!strcmp (topic_name, wp->name))
break;
if (wp)
wp->nthreads++;
else {
wp = mds_pool_alloc (&dcps_mem_blocks [MB_TOPIC_WAIT]);
if (!wp) {
lock_release (dp->lock);
return (NULL);
}
wp->next = dp->topic_wait;
cond_init (wp->condition);
wp->name = topic_name;
wp->topic = NULL;
wp->nthreads = 1;
dp->topic_wait = wp;
}
duration2timespec (timeout, &ts);
do {
if (ts.tv_sec || ts.tv_nsec)
ret = cond_wait_to (wp->condition, dp->lock, ts);
else
ret = cond_wait (wp->condition, dp->lock);
}
while (!wp->topic && !ret);
tp = wp->topic;
if (!--wp->nthreads) {
for (xp = dp->topic_wait, prev_wp = NULL;
xp != NULL && xp != wp;
prev_wp = xp, xp = xp->next)
;
if (prev_wp)
prev_wp->next = wp->next;
else
dp->topic_wait = wp->next;
cond_destroy (wp->condition);
mds_pool_free (&dcps_mem_blocks [MB_TOPIC_WAIT], wp);
}
lock_release (dp->lock);
#else
if (dds_listener_state) {
lock_release (dp->lock);
return (NULL);
}
/* Wait until timeout elapsed for discovery to add the topic. */
now = sys_getticks ();
if (timeout->sec == DDS_DURATION_INFINITE_SEC ||
timeout->nanosec == DDS_DURATION_INFINITE_NSEC)
end_time = now + 0x7ffffffe;
else
end_time = now + duration2ticks ((Duration_t *) timeout);
for (;;) {
d = end_time - now;
if (d >= 0x7fffffffUL)
break;
DDS_schedule (d * TMR_UNIT_MS);
tp = topic_lookup (&dp->participant, topic_name);
if (tp) {
tp->entity.flags |= EF_LOCAL;
tp->nlrefs++;
break;
}
now = sys_getticks ();
}
#endif
return (tp);
}
void sedp_topic_event (Reader_t *rp, NotificationType_t t)
{
Domain_t *dp = rp->r_subscriber->domain;
Participant_t *pp;
ChangeData_t change;
DiscoveredTopicData *info = NULL, tinfo;
Topic_t *tp;
InfoType_t type;
int error, new_node, valid_data = 0;
const char *names [2];
if (t != NT_DATA_AVAILABLE)
return;
rp->r_status &= ~DDS_DATA_AVAILABLE_STATUS;
for (;;) {
if (info) {
pid_topic_data_cleanup (&info);
xfree (info);
info = NULL;
}
/*dtrc_print0 ("SEDP-Topic: get samples ");*/
error = disc_get_data (rp, &change);
if (error) {
/*dtrc_print0 ("- none\r\n");*/
break;
}
/*dtrc_print1 ("- valid(%u)\r\n", change.kind);*/
if (change.kind != ALIVE) {
/* error = hc_get_key (rp->r_cache, change.h, &tinfo, 0);
if (error)
continue; */
type = EI_DELETE;
hc_inst_free (rp->r_cache, change.h);
}
else {
type = EI_NEW;
info = change.data;
}
pp = entity_participant (change.writer);
if (!pp || /* Not found. */
pp == &dp->participant || /* Own sent info. */
entity_ignored (pp->p_flags)) { /* Ignored. */
hc_inst_free (rp->r_cache, change.h);
continue; /* Filter out unneeded info. */
}
/* Topic from remote participant. */
if (type == EI_DELETE) {
/* TBD: Certified not to work correctly. */
tp = topic_lookup (pp, str_ptr (info.name));
if (!tp) {
hc_inst_free (rp->r_cache, change.h);
continue; /* If doesn't exist - no action. */
}
names [0] = str_ptr (tp->name);
names [1] = str_ptr (tp->type->type_name);
}
else {
tp = topic_create (pp, NULL, names [0], names [1], &new_node);
if (!tp) {
hc_inst_free (rp->r_cache, change.h);
continue; /* Can't create info -- just ignore. */
}
if (!new_node) {
if (entity_ignored (tp->entity.flags)) {
hc_inst_free (rp->r_cache, change.h);
continue;
}
type = EI_UPDATE;
}
names [0] = str_ptr (info->name);
names [1] = str_ptr (info->type_name);
}
if (sedp_log)
log_printf (SEDP_ID, 0, "SEDP: %s topic (%s/%s) from peer!\r\n",
info_type_str [type], names [0], names [1]);
sedp_topic_info (pp, tp, info, type);
}
if (info) {
pid_topic_data_cleanup (info);
xfree (info);
}
}
void sedp_publication_event (Reader_t *rp,
NotificationType_t t,
int cdd,
int secure)
{
Domain_t *dp = rp->r_subscriber->domain;
Participant_t *pp;
ChangeData_t change;
DiscoveredWriterData *info = NULL, tinfo;
Topic_t *tp;
DiscoveredWriter_t *dwp;
Reader_t *mrp;
UniQos_t qos;
InfoType_t type;
GUID_t *guidp;
int error;
if (t != NT_DATA_AVAILABLE)
return;
rp->r_status &= ~DDS_DATA_AVAILABLE_STATUS;
for (;;) {
if (info) {
pid_writer_data_cleanup (info);
xfree (info);
info = NULL;
}
/*dtrc_print0 ("SEDP-Pub: get samples ");*/
error = disc_get_data (rp, &change);
if (error) {
/*dtrc_print0 ("- none\r\n");*/
break;
}
/*dtrc_print1 ("- valid(%u)\r\n", change.kind);*/
if (change.kind != ALIVE) {
error = hc_get_key (rp->r_cache, change.h, &tinfo, 0);
if (error)
continue;
guidp = &tinfo.proxy.guid;
type = EI_DELETE;
hc_inst_free (rp->r_cache, change.h);
}
else {
info = change.data;
if (!info->topic_name || !info->type_name) {
hc_inst_free (rp->r_cache, change.h);
continue;
}
type = EI_NEW;
guidp = &info->proxy.guid;
}
pp = entity_participant (change.writer);
if (!pp || /* Not found. */
pp == &dp->participant || /* Own sent info. */
entity_ignored (pp->p_flags)) { /* Ignored. */
if (pp != &dp->participant && !cdd)
warn_printf ("sedp_publication_rx: invalid change.writer field!\r\n");
hc_inst_free (rp->r_cache, change.h);
dtrc_print0 ("SEDP-Pub: unneeded!\r\n");
continue; /* Filter out unneeded info. */
}
/* Publication from remote participant. */
if (type == EI_DELETE) {
dwp = (DiscoveredWriter_t *) endpoint_lookup (pp,
&guidp->entity_id);
if (!dwp) {
dtrc_print0 ("SEDP-Pub: DELETE && doesn't exist!\r\n");
continue; /* If doesn't exist - no action. */
}
if (!dwp->dw_topic) {
endpoint_delete (pp, &dwp->dw_ep);
continue; /* Ignored topic -- only endpoint. */
}
if (sedp_log)
log_printf (SEDP_ID, 0, "SEDP: Deleted %spublication (%s/%s) from peer!\r\n",
(secure) ? "secure " : "",
str_ptr (dwp->dw_topic->name),
str_ptr (dwp->dw_topic->type->type_name));
disc_publication_remove (pp, dwp);
hc_inst_free (rp->r_cache, change.h);
continue;
}
/* Do we know this topic? */
tp = topic_lookup (&dp->participant, str_ptr (info->topic_name));
if (tp && entity_ignored (tp->entity.flags)) {
hc_inst_free (rp->r_cache, change.h);
dtrc_print1 ("SEDP: ignored topic (%s)!\r\n", str_ptr (info->topic_name));
continue; /* Ignored topic. */
}
/* Do we know this endpoint already? */
dwp = (DiscoveredWriter_t *) endpoint_lookup (pp, &guidp->entity_id);
if (dwp) {
if (entity_ignored (dwp->dw_flags) || cdd) {
hc_inst_free (rp->r_cache, change.h);
continue; /* Ignored endpoint. */
}
dtrc_print1 ("Already exists (%s)!\r\n", str_ptr (info->topic_name));
type = EI_UPDATE;
disc_publication_update (pp, dwp, info);
if (sedp_log)
log_printf (SEDP_ID, 0, "SEDP: Updated %spublication (%s/%s) from peer!\r\n",
(secure) ? "secure " : "",
str_ptr (info->topic_name),
str_ptr (info->type_name));
hc_inst_free (rp->r_cache, change.h);
}
else {
/* Get QoS parameters. */
qos_disc_writer_set (&qos, &info->qos);
mrp = NULL;
/* Create new endpoint. */
dwp = (DiscoveredWriter_t *) endpoint_create (pp,
pp, &guidp->entity_id, NULL);
if (!dwp) {
dtrc_print1 ("SEDP: Create endpoint (%s) not possible - exit!\r\n", str_ptr (info->topic_name));
hc_inst_free (rp->r_cache, change.h);
qos_disc_writer_restore (&info->qos, &qos);
continue; /* Can't create -- just ignore. */
}
disc_publication_add (pp, dwp, &qos, tp, mrp, info);
hc_inst_free (rp->r_cache, change.h);
if (sedp_log)
log_printf (SEDP_ID, 0, "SEDP: New %spublication (%s/%s) from %s!\r\n",
(secure) ? "secure " : "",
str_ptr (info->topic_name),
str_ptr (info->type_name),
(cdd) ? "CDD" : "peer");
}
}
if (info) {
pid_writer_data_cleanup (info);
xfree (info);
}
}
