static int local_waitlisten(FAR struct local_conn_s *server)
{
int ret;
/* Loop until a connection is requested or we receive a signal */
while (dq_empty(&server->u.server.lc_waiters))
{
/* No.. wait for a connection or a signal */
ret = sem_wait(&server->lc_waitsem);
if (ret < 0)
{
int errval = get_errno();
DEBUGASSERT(errval == EINTR);
return -errval;
}
}
/* There is a client waiting for the connection */
return OK;
}
void *
dq_peek_back(dqueue q)
{
assert(!dq_empty(q));
return q -> sentinel -> prev -> element;
}
void *
dq_deq_back(dqueue q)
{
assert(!dq_empty(q));
return unlink_and_free(q -> sentinel -> prev);
}
void *
dq_peek_front(dqueue q)
{
assert(!dq_empty(q));
return q -> sentinel -> next -> element;
}
void *
dq_deq_front(dqueue q)
{
assert(!dq_empty(q));
return unlink_and_free(q -> sentinel -> next);
}
int local_listen(FAR struct local_conn_s *server, int backlog)
{
net_lock_t state;
int ret;
/* Some sanity checks */
DEBUGASSERT(server);
if (server->lc_proto != SOCK_STREAM ||
server->lc_state == LOCAL_STATE_UNBOUND ||
server->lc_type != LOCAL_TYPE_PATHNAME)
{
return -EOPNOTSUPP;
}
DEBUGASSERT(server->lc_state == LOCAL_STATE_BOUND ||
server->lc_state == LOCAL_STATE_LISTENING);
/* Set the backlog value */
DEBUGASSERT((unsigned)backlog < 256);
server->u.server.lc_backlog = backlog;
/* Is this the first time since being bound to an address and that
* listen() was called? If so, the state should be LOCAL_STATE_BOUND.
*/
if (server->lc_state == LOCAL_STATE_BOUND)
{
/* The connection should not reside in any other list */
DEBUGASSERT(server->lc_node.flink == NULL &&
server->lc_node.flink == NULL);
/* Add the connection structure to the list of listeners */
state = net_lock();
dq_addlast(&server->lc_node, &g_local_listeners);
net_unlock(state);
/* And change the server state to listing */
server->lc_state = LOCAL_STATE_LISTENING;
}
/* Loop until a connection is requested or we receive a signal */
while (dq_empty(&server->u.server.lc_waiters))
{
/* No.. wait for a connection or a signal */
ret = sem_wait(&server->lc_waitsem);
if (ret < 0)
{
int errval = errno;
DEBUGASSERT(errval == EINTR);
return -errval;
}
}
/* There is a client waiting for the connection */
return OK;
}