DistEntry *erts_find_or_insert_dist_entry(Eterm sysname)
{
DistEntry *res;
DistEntry de;
erts_aint_t refc;
res = erts_find_dist_entry(sysname);
if (res)
return res;
de.sysname = sysname;
erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
res = hash_put(&erts_dist_table, (void *) &de);
refc = erts_refc_inctest(&res->refc, 0);
if (refc < 2) /* New or pending delete */
erts_refc_inc(&res->refc, 1);
erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
return res;
}
DistEntry *
erts_channel_no_to_dist_entry(Uint cno)
{
/*
* For this node (and previous incarnations of this node),
* ERST_INTERNAL_CHANNEL_NO (will always be 0 I guess) is used as
* channel no. For other nodes, the atom index of the atom corresponding
* to the node name is used as channel no.
*/
if(cno == ERST_INTERNAL_CHANNEL_NO) {
erts_refc_inc(&erts_this_dist_entry->refc, 2);
return erts_this_dist_entry;
}
if((cno > MAX_ATOM_INDEX)
|| (cno >= atom_table_size())
|| (atom_tab(cno) == NULL))
return NULL;
/* cno is a valid atom index; find corresponding dist entry (if there
is one) */
return erts_find_dist_entry(make_atom(cno));
}
