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_ep_stat_increment (cipc->ep, 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_ep_stopped (cipc->ep); return; } nn_fsm_bad_state(cipc->state, src, type); }
static void nn_cws_shutdown (struct nn_fsm *self, int src, int type, NN_UNUSED void *srcptr) { struct nn_cws *cws; cws = nn_cont (self, struct nn_cws, fsm); if (nn_slow (src == NN_FSM_ACTION && type == NN_FSM_STOP)) { if (!nn_sws_isidle (&cws->sws)) { nn_ep_stat_increment (cws->ep, NN_STAT_DROPPED_CONNECTIONS, 1); nn_sws_stop (&cws->sws); } cws->state = NN_CWS_STATE_STOPPING_SWS_FINAL; } if (nn_slow (cws->state == NN_CWS_STATE_STOPPING_SWS_FINAL)) { if (!nn_sws_isidle (&cws->sws)) return; nn_backoff_stop (&cws->retry); nn_usock_stop (&cws->usock); nn_dns_stop (&cws->dns); cws->state = NN_CWS_STATE_STOPPING; } if (nn_slow (cws->state == NN_CWS_STATE_STOPPING)) { if (!nn_backoff_isidle (&cws->retry) || !nn_usock_isidle (&cws->usock) || !nn_dns_isidle (&cws->dns)) return; cws->state = NN_CWS_STATE_IDLE; nn_fsm_stopped_noevent (&cws->fsm); nn_ep_stopped (cws->ep); return; } nn_fsm_bad_state (cws->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_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); 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) || !nn_backoff_isidle (&btcp->retry)) 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); }