forked from acouzens/open5gs
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/*
|
|
* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
|
|
*
|
|
* This file is part of Open5GS.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "ogs-core.h"
|
|
|
|
typedef struct fsm_event_s {
|
|
int id;
|
|
} fsm_event_t;
|
|
|
|
static fsm_event_t entry_event = {
|
|
OGS_FSM_ENTRY_SIG,
|
|
};
|
|
static fsm_event_t exit_event = {
|
|
OGS_FSM_EXIT_SIG,
|
|
};
|
|
|
|
const char *OGS_FSM_NAME_INIT_SIG = "INIT";
|
|
const char *OGS_FSM_NAME_ENTRY_SIG = "ENTRY";
|
|
const char *OGS_FSM_NAME_EXIT_SIG = "EXIT";
|
|
|
|
void ogs_fsm_init(void *sm, void *event)
|
|
{
|
|
ogs_fsm_t *s = sm;
|
|
fsm_event_t *e = event;
|
|
|
|
if (s->init != NULL) {
|
|
(*s->init)(s, e);
|
|
if (s->init != s->state) {
|
|
if (e) {
|
|
e->id = OGS_FSM_ENTRY_SIG;
|
|
(*s->state)(s, e);
|
|
} else {
|
|
(*s->state)(s, &entry_event);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ogs_fsm_dispatch(void *sm, void *event)
|
|
{
|
|
ogs_fsm_t *s = sm;
|
|
fsm_event_t *e = event;
|
|
ogs_fsm_handler_t tmp = s->state;
|
|
|
|
if (e)
|
|
(*tmp)(s, e);
|
|
|
|
if (s->state != tmp) {
|
|
if (e) {
|
|
e->id = OGS_FSM_EXIT_SIG;
|
|
(*tmp)(s, e);
|
|
} else {
|
|
(*tmp)(s, &exit_event);
|
|
}
|
|
if (e) {
|
|
e->id = OGS_FSM_ENTRY_SIG;
|
|
(*s->state)(s, e);
|
|
} else {
|
|
(*s->state)(s, &entry_event);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ogs_fsm_fini(void *sm, void *event)
|
|
{
|
|
ogs_fsm_t *s = sm;
|
|
fsm_event_t *e = event;
|
|
|
|
if (s->fini != s->state) {
|
|
if (e) {
|
|
e->id = OGS_FSM_EXIT_SIG;
|
|
(*s->state)(s, e);
|
|
} else {
|
|
(*s->state)(s, &exit_event);
|
|
}
|
|
}
|
|
|
|
if (s->fini != NULL) {
|
|
(*s->fini)(s, e);
|
|
}
|
|
|
|
s->state = s->init;
|
|
}
|