static void nn_cipc_shutdown (struct nn_fsm *self, int src, int type,
NN_UNUSED void *srcptr)
{
struct nn_cipc *cipc;
cipc = nn_cont (self, struct nn_cipc, fsm);
if (nn_slow (src == NN_FSM_ACTION && type == NN_FSM_STOP)) {
if (!nn_sipc_isidle (&cipc->sipc)) {
nn_epbase_stat_increment (&cipc->epbase,
NN_STAT_DROPPED_CONNECTIONS, 1);
nn_sipc_stop (&cipc->sipc);
}
cipc->state = NN_CIPC_STATE_STOPPING_SIPC_FINAL;
}
if (nn_slow (cipc->state == NN_CIPC_STATE_STOPPING_SIPC_FINAL)) {
if (!nn_sipc_isidle (&cipc->sipc))
return;
nn_backoff_stop (&cipc->retry);
nn_usock_stop (&cipc->usock);
cipc->state = NN_CIPC_STATE_STOPPING;
}
if (nn_slow (cipc->state == NN_CIPC_STATE_STOPPING)) {
if (!nn_backoff_isidle (&cipc->retry) ||
!nn_usock_isidle (&cipc->usock))
return;
cipc->state = NN_CIPC_STATE_IDLE;
nn_fsm_stopped_noevent (&cipc->fsm);
nn_epbase_stopped (&cipc->epbase);
return;
}
nn_fsm_bad_state(cipc->state, src, type);
}
static void nn_aipc_shutdown (struct nn_fsm *self, int src, int type,
void *srcptr)
{
struct nn_aipc *aipc;
aipc = nn_cont (self, struct nn_aipc, fsm);
if (nn_slow (src == NN_FSM_ACTION && type == NN_FSM_STOP)) {
nn_sipc_stop (&aipc->sipc);
aipc->state = NN_AIPC_STATE_STOPPING_SIPC_FINAL;
}
if (nn_slow (aipc->state == NN_AIPC_STATE_STOPPING_SIPC_FINAL)) {
if (!nn_sipc_isidle (&aipc->sipc))
return;
nn_usock_stop (&aipc->usock);
aipc->state = NN_AIPC_STATE_STOPPING;
}
if (nn_slow (aipc->state == NN_AIPC_STATE_STOPPING)) {
if (!nn_usock_isidle (&aipc->usock))
return;
if (aipc->listener) {
nn_assert (aipc->listener_owner.fsm);
nn_usock_swap_owner (aipc->listener, &aipc->listener_owner);
aipc->listener = NULL;
aipc->listener_owner.src = 1;
aipc->listener_owner.fsm = NULL;
}
aipc->state = NN_AIPC_STATE_IDLE;
nn_fsm_stopped (&aipc->fsm, NN_AIPC_STOPPED);
return;
}
nn_fsm_bad_state(aipc->state, src, type);
}
static void nn_cipc_handler (struct nn_fsm *self, int src, int type,
void *srcptr)
{
struct nn_cipc *cipc;
cipc = nn_cont (self, struct nn_cipc, fsm);
/******************************************************************************/
/* STOP procedure. */
/******************************************************************************/
if (nn_slow (src == NN_FSM_ACTION && type == NN_FSM_STOP)) {
nn_sipc_stop (&cipc->sipc);
cipc->state = NN_CIPC_STATE_STOPPING_SIPC_FINAL;
}
if (nn_slow (cipc->state == NN_CIPC_STATE_STOPPING_SIPC_FINAL)) {
if (!nn_sipc_isidle (&cipc->sipc))
return;
nn_backoff_stop (&cipc->retry);
nn_usock_stop (&cipc->usock);
cipc->state = NN_CIPC_STATE_STOPPING;
}
if (nn_slow (cipc->state == NN_CIPC_STATE_STOPPING)) {
if (!nn_backoff_isidle (&cipc->retry) ||
!nn_usock_isidle (&cipc->usock))
return;
cipc->state = NN_CIPC_STATE_IDLE;
nn_fsm_stopped_noevent (&cipc->fsm);
nn_epbase_stopped (&cipc->epbase);
return;
}
switch (cipc->state) {
/******************************************************************************/
/* IDLE state. */
/* The state machine wasn't yet started. */
/******************************************************************************/
case NN_CIPC_STATE_IDLE:
switch (src) {
case NN_FSM_ACTION:
switch (type) {
case NN_FSM_START:
nn_cipc_start_connecting (cipc);
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* CONNECTING state. */
/* Non-blocking connect is under way. */
/******************************************************************************/
case NN_CIPC_STATE_CONNECTING:
switch (src) {
case NN_CIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_CONNECTED:
nn_sipc_start (&cipc->sipc, &cipc->usock);
cipc->state = NN_CIPC_STATE_ACTIVE;
return;
case NN_USOCK_ERROR:
nn_usock_stop (&cipc->usock);
cipc->state = NN_CIPC_STATE_STOPPING_USOCK;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* ACTIVE state. */
/* Connection is established and handled by the sipc state machine. */
/******************************************************************************/
case NN_CIPC_STATE_ACTIVE:
switch (src) {
case NN_CIPC_SRC_SIPC:
switch (type) {
case NN_SIPC_ERROR:
nn_sipc_stop (&cipc->sipc);
cipc->state = NN_CIPC_STATE_STOPPING_SIPC;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_SIPC state. */
/* sipc object was asked to stop but it haven't stopped yet. */
/******************************************************************************/
case NN_CIPC_STATE_STOPPING_SIPC:
switch (src) {
case NN_CIPC_SRC_SIPC:
switch (type) {
case NN_SIPC_STOPPED:
nn_usock_stop (&cipc->usock);
cipc->state = NN_CIPC_STATE_STOPPING_USOCK;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_USOCK state. */
/* usock object was asked to stop but it haven't stopped yet. */
/******************************************************************************/
case NN_CIPC_STATE_STOPPING_USOCK:
switch (src) {
case NN_CIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_STOPPED:
nn_backoff_start (&cipc->retry);
cipc->state = NN_CIPC_STATE_WAITING;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* WAITING state. */
/* Waiting before re-connection is attempted. This way we won't overload */
/* the system by continuous re-connection attemps. */
/******************************************************************************/
case NN_CIPC_STATE_WAITING:
switch (src) {
case NN_CIPC_SRC_RECONNECT_TIMER:
switch (type) {
case NN_BACKOFF_TIMEOUT:
nn_backoff_stop (&cipc->retry);
cipc->state = NN_CIPC_STATE_STOPPING_BACKOFF;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_BACKOFF state. */
/* backoff object was asked to stop, but it haven't stopped yet. */
/******************************************************************************/
case NN_CIPC_STATE_STOPPING_BACKOFF:
switch (src) {
case NN_CIPC_SRC_RECONNECT_TIMER:
switch (type) {
case NN_BACKOFF_STOPPED:
nn_cipc_start_connecting (cipc);
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* Invalid state. */
/******************************************************************************/
default:
nn_fsm_bad_state (cipc->state, src, type);
}
}
static void nn_cipc_handler (struct nn_fsm *self, int src, int type,
NN_UNUSED void *srcptr)
{
struct nn_cipc *cipc;
cipc = nn_cont (self, struct nn_cipc, fsm);
switch (cipc->state) {
/******************************************************************************/
/* IDLE state. */
/* The state machine wasn't yet started. */
/******************************************************************************/
case NN_CIPC_STATE_IDLE:
switch (src) {
case NN_FSM_ACTION:
switch (type) {
case NN_FSM_START:
nn_cipc_start_connecting (cipc);
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* CONNECTING state. */
/* Non-blocking connect is under way. */
/******************************************************************************/
case NN_CIPC_STATE_CONNECTING:
switch (src) {
case NN_CIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_CONNECTED:
nn_sipc_start (&cipc->sipc, &cipc->usock);
cipc->state = NN_CIPC_STATE_ACTIVE;
nn_epbase_stat_increment (&cipc->epbase,
NN_STAT_INPROGRESS_CONNECTIONS, -1);
nn_epbase_stat_increment (&cipc->epbase,
NN_STAT_ESTABLISHED_CONNECTIONS, 1);
nn_epbase_clear_error (&cipc->epbase);
return;
case NN_USOCK_ERROR:
nn_epbase_set_error (&cipc->epbase,nn_usock_geterrno (&cipc->usock),__FILE__,__LINE__);
nn_usock_stop (&cipc->usock);
cipc->state = NN_CIPC_STATE_STOPPING_USOCK;
nn_epbase_stat_increment (&cipc->epbase,
NN_STAT_INPROGRESS_CONNECTIONS, -1);
nn_epbase_stat_increment (&cipc->epbase,
NN_STAT_CONNECT_ERRORS, 1);
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* ACTIVE state. */
/* Connection is established and handled by the sipc state machine. */
/******************************************************************************/
case NN_CIPC_STATE_ACTIVE:
switch (src) {
case NN_CIPC_SRC_SIPC:
switch (type) {
case NN_SIPC_ERROR:
nn_sipc_stop (&cipc->sipc);
cipc->state = NN_CIPC_STATE_STOPPING_SIPC;
nn_epbase_stat_increment (&cipc->epbase,
NN_STAT_BROKEN_CONNECTIONS, 1);
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_SIPC state. */
/* sipc object was asked to stop but it haven't stopped yet. */
/******************************************************************************/
case NN_CIPC_STATE_STOPPING_SIPC:
switch (src) {
case NN_CIPC_SRC_SIPC:
switch (type) {
case NN_USOCK_SHUTDOWN:
return;
case NN_SIPC_STOPPED:
nn_usock_stop (&cipc->usock);
cipc->state = NN_CIPC_STATE_STOPPING_USOCK;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_USOCK state. */
/* usock object was asked to stop but it haven't stopped yet. */
/******************************************************************************/
case NN_CIPC_STATE_STOPPING_USOCK:
switch (src) {
case NN_CIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_SHUTDOWN:
return;
case NN_USOCK_STOPPED:
nn_backoff_start (&cipc->retry);
cipc->state = NN_CIPC_STATE_WAITING;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* WAITING state. */
/* Waiting before re-connection is attempted. This way we won't overload */
/* the system by continuous re-connection attemps. */
/******************************************************************************/
case NN_CIPC_STATE_WAITING:
switch (src) {
case NN_CIPC_SRC_RECONNECT_TIMER:
switch (type) {
case NN_BACKOFF_TIMEOUT:
nn_backoff_stop (&cipc->retry);
cipc->state = NN_CIPC_STATE_STOPPING_BACKOFF;
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_BACKOFF state. */
/* backoff object was asked to stop, but it haven't stopped yet. */
/******************************************************************************/
case NN_CIPC_STATE_STOPPING_BACKOFF:
switch (src) {
case NN_CIPC_SRC_RECONNECT_TIMER:
switch (type) {
case NN_BACKOFF_STOPPED:
nn_cipc_start_connecting (cipc);
return;
default:
nn_fsm_bad_action (cipc->state, src, type);
}
default:
nn_fsm_bad_source (cipc->state, src, type);
}
/******************************************************************************/
/* Invalid state. */
/******************************************************************************/
default:
nn_fsm_bad_state (cipc->state, src, type);
}
}
static void nn_aipc_handler (struct nn_fsm *self, int src, int type,
void *srcptr)
{
struct nn_aipc *aipc;
aipc = nn_cont (self, struct nn_aipc, fsm);
/******************************************************************************/
/* STOP procedure. */
/******************************************************************************/
if (nn_slow (src == NN_FSM_ACTION && type == NN_FSM_STOP)) {
nn_sipc_stop (&aipc->sipc);
aipc->state = NN_AIPC_STATE_STOPPING_SIPC_FINAL;
}
if (nn_slow (aipc->state == NN_AIPC_STATE_STOPPING_SIPC_FINAL)) {
if (!nn_sipc_isidle (&aipc->sipc))
return;
nn_usock_stop (&aipc->usock);
aipc->state = NN_AIPC_STATE_STOPPING;
}
if (nn_slow (aipc->state == NN_AIPC_STATE_STOPPING)) {
if (!nn_usock_isidle (&aipc->usock))
return;
if (aipc->listener) {
nn_assert (aipc->listener_owner.fsm);
nn_usock_swap_owner (aipc->listener, &aipc->listener_owner);
aipc->listener = NULL;
aipc->listener_owner.src = 1;
aipc->listener_owner.fsm = NULL;
}
aipc->state = NN_AIPC_STATE_IDLE;
nn_fsm_stopped (&aipc->fsm, NN_AIPC_STOPPED);
return;
}
switch (aipc->state) {
/******************************************************************************/
/* IDLE state. */
/* The state machine wasn't yet started. */
/******************************************************************************/
case NN_AIPC_STATE_IDLE:
switch (src) {
case NN_FSM_ACTION:
switch (type) {
case NN_FSM_START:
nn_usock_accept (&aipc->usock, aipc->listener);
aipc->state = NN_AIPC_STATE_ACCEPTING;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* ACCEPTING state. */
/* Waiting for incoming connection. */
/******************************************************************************/
case NN_AIPC_STATE_ACCEPTING:
switch (src) {
case NN_AIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_ACCEPTED:
/* Return ownership of the listening socket to the parent. */
nn_usock_swap_owner (aipc->listener, &aipc->listener_owner);
aipc->listener = NULL;
aipc->listener_owner.src = -1;
aipc->listener_owner.fsm = NULL;
nn_fsm_raise (&aipc->fsm, &aipc->accepted, NN_AIPC_ACCEPTED);
/* Start the sipc state machine. */
nn_usock_activate (&aipc->usock);
nn_sipc_start (&aipc->sipc, &aipc->usock);
aipc->state = NN_AIPC_STATE_ACTIVE;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* ACTIVE state. */
/******************************************************************************/
case NN_AIPC_STATE_ACTIVE:
switch (src) {
case NN_AIPC_SRC_SIPC:
switch (type) {
case NN_SIPC_ERROR:
nn_sipc_stop (&aipc->sipc);
aipc->state = NN_AIPC_STATE_STOPPING_SIPC;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_SIPC state. */
/******************************************************************************/
case NN_AIPC_STATE_STOPPING_SIPC:
switch (src) {
case NN_AIPC_SRC_SIPC:
switch (type) {
case NN_SIPC_STOPPED:
nn_usock_stop (&aipc->usock);
aipc->state = NN_AIPC_STATE_STOPPING_USOCK;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_USOCK state. */
/******************************************************************************/
case NN_AIPC_STATE_STOPPING_USOCK:
switch (src) {
case NN_AIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_STOPPED:
nn_fsm_raise (&aipc->fsm, &aipc->done, NN_AIPC_ERROR);
aipc->state = NN_AIPC_STATE_DONE;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* Invalid state. */
/******************************************************************************/
default:
nn_fsm_bad_state (aipc->state, src, type);
}
}
static void nn_aipc_handler (struct nn_fsm *self, int src, int type,
void *srcptr)
{
struct nn_aipc *aipc;
int val;
size_t sz;
aipc = nn_cont (self, struct nn_aipc, fsm);
switch (aipc->state) {
/******************************************************************************/
/* IDLE state. */
/* The state machine wasn't yet started. */
/******************************************************************************/
case NN_AIPC_STATE_IDLE:
switch (src) {
case NN_FSM_ACTION:
switch (type) {
case NN_FSM_START:
nn_usock_accept (&aipc->usock, aipc->listener);
aipc->state = NN_AIPC_STATE_ACCEPTING;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* ACCEPTING state. */
/* Waiting for incoming connection. */
/******************************************************************************/
case NN_AIPC_STATE_ACCEPTING:
switch (src) {
case NN_AIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_ACCEPTED:
/* Set the relevant socket options. */
sz = sizeof (val);
nn_epbase_getopt (aipc->epbase, NN_SOL_SOCKET, NN_SNDBUF,
&val, &sz);
nn_assert (sz == sizeof (val));
nn_usock_setsockopt (&aipc->usock, SOL_SOCKET, SO_SNDBUF,
&val, sizeof (val));
sz = sizeof (val);
nn_epbase_getopt (aipc->epbase, NN_SOL_SOCKET, NN_RCVBUF,
&val, &sz);
nn_assert (sz == sizeof (val));
nn_usock_setsockopt (&aipc->usock, SOL_SOCKET, SO_RCVBUF,
&val, sizeof (val));
/* Return ownership of the listening socket to the parent. */
nn_usock_swap_owner (aipc->listener, &aipc->listener_owner);
aipc->listener = NULL;
aipc->listener_owner.src = -1;
aipc->listener_owner.fsm = NULL;
nn_fsm_raise (&aipc->fsm, &aipc->accepted, NN_AIPC_ACCEPTED);
/* Start the sipc state machine. */
nn_usock_activate (&aipc->usock);
nn_sipc_start (&aipc->sipc, &aipc->usock);
aipc->state = NN_AIPC_STATE_ACTIVE;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* ACTIVE state. */
/******************************************************************************/
case NN_AIPC_STATE_ACTIVE:
switch (src) {
case NN_AIPC_SRC_SIPC:
switch (type) {
case NN_SIPC_ERROR:
nn_sipc_stop (&aipc->sipc);
aipc->state = NN_AIPC_STATE_STOPPING_SIPC;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_SIPC state. */
/******************************************************************************/
case NN_AIPC_STATE_STOPPING_SIPC:
switch (src) {
case NN_AIPC_SRC_SIPC:
switch (type) {
case NN_SIPC_STOPPED:
nn_usock_stop (&aipc->usock);
aipc->state = NN_AIPC_STATE_STOPPING_USOCK;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* STOPPING_USOCK state. */
/******************************************************************************/
case NN_AIPC_STATE_STOPPING_USOCK:
switch (src) {
case NN_AIPC_SRC_USOCK:
switch (type) {
case NN_USOCK_STOPPED:
nn_fsm_raise (&aipc->fsm, &aipc->done, NN_AIPC_ERROR);
aipc->state = NN_AIPC_STATE_DONE;
return;
default:
nn_fsm_bad_action (aipc->state, src, type);
}
default:
nn_fsm_bad_source (aipc->state, src, type);
}
/******************************************************************************/
/* Invalid state. */
/******************************************************************************/
default:
nn_fsm_bad_state (aipc->state, src, type);
}
}
