static void nn_btcp_shutdown (struct nn_fsm *self, int src, int type,
void *srcptr)
{
struct nn_btcp *btcp;
struct nn_list_item *it;
struct nn_atcp *atcp;
btcp = nn_cont (self, struct nn_btcp, fsm);
nn_assert (btcp);
if (nn_slow (src == NN_FSM_ACTION && type == NN_FSM_STOP)) {
nn_backoff_stop (&btcp->retry);
if (btcp->atcp) {
nn_atcp_stop (btcp->atcp);
btcp->state = NN_BTCP_STATE_STOPPING_ATCP;
}
else {
btcp->state = NN_BTCP_STATE_STOPPING_USOCK;
}
}
if (nn_slow (btcp->state == NN_BTCP_STATE_STOPPING_ATCP)) {
if (!nn_atcp_isidle (btcp->atcp))
return;
nn_atcp_term (btcp->atcp);
nn_free (btcp->atcp);
btcp->atcp = NULL;
nn_usock_stop (&btcp->usock);
btcp->state = NN_BTCP_STATE_STOPPING_USOCK;
}
if (nn_slow (btcp->state == NN_BTCP_STATE_STOPPING_USOCK)) {
if (!nn_usock_isidle (&btcp->usock))
return;
for (it = nn_list_begin (&btcp->atcps);
it != nn_list_end (&btcp->atcps);
it = nn_list_next (&btcp->atcps, it)) {
atcp = nn_cont (it, struct nn_atcp, item);
nn_atcp_stop (atcp);
}
btcp->state = NN_BTCP_STATE_STOPPING_ATCPS;
goto atcps_stopping;
}
if (nn_slow (btcp->state == NN_BTCP_STATE_STOPPING_ATCPS)) {
nn_assert (src == NN_BTCP_SRC_ATCP && type == NN_ATCP_STOPPED);
atcp = (struct nn_atcp *) srcptr;
nn_list_erase (&btcp->atcps, &atcp->item);
nn_atcp_term (atcp);
nn_free (atcp);
/* If there are no more atcp state machines, we can stop the whole
btcp object. */
atcps_stopping:
if (nn_list_empty (&btcp->atcps)) {
btcp->state = NN_BTCP_STATE_IDLE;
nn_fsm_stopped_noevent (&btcp->fsm);
nn_epbase_stopped (&btcp->epbase);
return;
}
return;
}
nn_fsm_bad_action(btcp->state, src, type);
}
static void nn_btcp_handler (struct nn_fsm *self, int src, int type,
void *srcptr)
{
struct nn_btcp *btcp;
struct nn_list_item *it;
struct nn_atcp *atcp;
btcp = nn_cont (self, struct nn_btcp, fsm);
/******************************************************************************/
/* STOP procedure. */
/******************************************************************************/
if (nn_slow (src == NN_FSM_ACTION && type == NN_FSM_STOP)) {
nn_atcp_stop (btcp->atcp);
btcp->state = NN_BTCP_STATE_STOPPING_ATCP;
}
if (nn_slow (btcp->state == NN_BTCP_STATE_STOPPING_ATCP)) {
if (!nn_atcp_isidle (btcp->atcp))
return;
nn_atcp_term (btcp->atcp);
nn_free (btcp->atcp);
btcp->atcp = NULL;
nn_usock_stop (&btcp->usock);
btcp->state = NN_BTCP_STATE_STOPPING_USOCK;
}
if (nn_slow (btcp->state == NN_BTCP_STATE_STOPPING_USOCK)) {
if (!nn_usock_isidle (&btcp->usock))
return;
for (it = nn_list_begin (&btcp->atcps);
it != nn_list_end (&btcp->atcps);
it = nn_list_next (&btcp->atcps, it)) {
atcp = nn_cont (it, struct nn_atcp, item);
nn_atcp_stop (atcp);
}
btcp->state = NN_BTCP_STATE_STOPPING_ATCPS;
goto atcps_stopping;
}
if (nn_slow (btcp->state == NN_BTCP_STATE_STOPPING_ATCPS)) {
nn_assert (src == NN_BTCP_SRC_ATCP && type == NN_ATCP_STOPPED);
atcp = (struct nn_atcp *) srcptr;
nn_list_erase (&btcp->atcps, &atcp->item);
nn_atcp_term (atcp);
nn_free (atcp);
/* If there are no more atcp state machines, we can stop the whole
btcp object. */
atcps_stopping:
if (nn_list_empty (&btcp->atcps)) {
btcp->state = NN_BTCP_STATE_IDLE;
nn_fsm_stopped_noevent (&btcp->fsm);
nn_epbase_stopped (&btcp->epbase);
return;
}
return;
}
switch (btcp->state) {
/******************************************************************************/
/* IDLE state. */
/******************************************************************************/
case NN_BTCP_STATE_IDLE:
switch (src) {
case NN_FSM_ACTION:
switch (type) {
case NN_FSM_START:
nn_btcp_start_listening (btcp);
nn_btcp_start_accepting (btcp);
btcp->state = NN_BTCP_STATE_ACTIVE;
return;
default:
nn_fsm_bad_action (btcp->state, src, type);
}
default:
nn_fsm_bad_source (btcp->state, src, type);
}
/******************************************************************************/
/* ACTIVE state. */
/* The execution is yielded to the atcp state machine in this state. */
/******************************************************************************/
case NN_BTCP_STATE_ACTIVE:
if (srcptr == btcp->atcp) {
switch (type) {
case NN_ATCP_ACCEPTED:
/* Move the newly created connection to the list of existing
connections. */
nn_list_insert (&btcp->atcps, &btcp->atcp->item,
nn_list_end (&btcp->atcps));
btcp->atcp = NULL;
/* Start waiting for a new incoming connection. */
nn_btcp_start_accepting (btcp);
return;
default:
nn_fsm_bad_action (btcp->state, src, type);
}
}
/* For all remaining events we'll assume they are coming from one
of remaining child atcp objects. */
nn_assert (src == NN_BTCP_SRC_ATCP);
atcp = (struct nn_atcp*) srcptr;
switch (type) {
case NN_ATCP_ERROR:
nn_atcp_stop (atcp);
return;
case NN_ATCP_STOPPED:
nn_list_erase (&btcp->atcps, &atcp->item);
nn_atcp_term (atcp);
nn_free (atcp);
return;
default:
nn_fsm_bad_action (btcp->state, src, type);
}
/******************************************************************************/
/* Invalid state. */
/******************************************************************************/
default:
nn_fsm_bad_state (btcp->state, src, type);
}
}
