fsm: Introduce default time-out handling
If a FSM doesn't specify any timer_cb, simply terminate the FSM by
default on time-out. This is a reasonable default for most cases, and
avoids copy+pasting a one-line timer_cb function in every FSM.
Also, even if there is a timer_cb, let it have a return value to decide
if the core should terminate after return from timer_cb or not.
Change-Id: I0461a9593bfb729c82b7d1d1cf9f30b1079d0212
diff --git a/include/osmocom/core/fsm.h b/include/osmocom/core/fsm.h
index 401ee04..ce0db15 100644
--- a/include/osmocom/core/fsm.h
+++ b/include/osmocom/core/fsm.h
@@ -26,6 +26,8 @@
OSMO_FSM_TERM_REGULAR,
/*! \brief erroneous termination of process */
OSMO_FSM_TERM_ERROR,
+ /*! \brief termination due to time-out */
+ OSMO_FSM_TERM_TIMEOUT,
};
/*! \brief description of a rule in the FSM */
@@ -63,7 +65,7 @@
/*! \breif clean-up function, called during termination */
void (*cleanup)(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause);
/*! \brief timer call-back for states with time-out */
- void (*timer_cb)(struct osmo_fsm_inst *fi);
+ int (*timer_cb)(struct osmo_fsm_inst *fi);
/*! \brief logging sub-system for this FSM */
int log_subsys;
/*! \brief human-readable names of events */