static int foo(void)
{
struct osmo_fsm_inst *fi;
LOGP(DMAIN, LOGL_INFO, "Checking FSM allocation\n");
fi = osmo_fsm_inst_alloc(&fsm, g_ctx, NULL, LOGL_DEBUG, NULL);
OSMO_ASSERT(fi);
OSMO_ASSERT(fi->fsm == &fsm);
OSMO_ASSERT(!strncmp(osmo_fsm_inst_name(fi), fsm.name, strlen(fsm.name)));
OSMO_ASSERT(fi->state == ST_NULL);
OSMO_ASSERT(fi->log_level == LOGL_DEBUG);
/* Try invalid state transition */
osmo_fsm_inst_dispatch(fi, EV_B, (void *) 42);
OSMO_ASSERT(fi->state == ST_NULL);
/* Legitimate state transition */
osmo_fsm_inst_dispatch(fi, EV_A, (void *) 23);
OSMO_ASSERT(fi->state == ST_ONE);
/* Legitimate transition with timer */
fsm.timer_cb = test_fsm_tmr_cb;
osmo_fsm_inst_dispatch(fi, EV_B, (void *) 42);
OSMO_ASSERT(fi->state == ST_TWO);
return 0;
}
/*! \brief allocate a new instance of a specified FSM as child of
* other FSM instance
*
* This is like \ref osmo_fsm_inst_alloc but using the parent FSM as
* talloc context, and inheriting the log level of the parent.
*
* \param[in] fsm Descriptor of the to-be-allocated FSM
* \param[in] parent Parent FSM instance
* \param[in] parent_term_event Event to be sent to parent when terminating
* \returns newly-allocated, initialized and registered FSM instance
*/
struct osmo_fsm_inst *osmo_fsm_inst_alloc_child(struct osmo_fsm *fsm,
struct osmo_fsm_inst *parent,
uint32_t parent_term_event)
{
struct osmo_fsm_inst *fi;
fi = osmo_fsm_inst_alloc(fsm, parent, NULL, parent->log_level,
parent->id);
if (!fi) {
/* indicate immediate termination to caller */
osmo_fsm_inst_dispatch(parent, parent_term_event, NULL);
return NULL;
}
LOGPFSM(fi, "is child of %s\n", osmo_fsm_inst_name(parent));
fi->proc.parent = parent;
fi->proc.parent_term_event = parent_term_event;
llist_add(&fi->proc.child, &parent->proc.children);
return fi;
}
