path: root/include
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authorPhilipp Maier <pmaier@sysmocom.de>2018-02-14 18:20:07 +0100
committerHarald Welte <laforge@gnumonks.org>2018-02-19 08:30:21 +0000
commitd1f5793b5e89426927d57cff7f6951e0c2e29d92 (patch)
tree56cc46cfdf3ee7026ab4b4d9968c2c31d0441145 /include
parent4a8a9f4210b01c3b8b75eb3b984c9127e90d8c54 (diff)
fsm: allow graceful exit on FSM termination
The function _osmo_fsm_inst_term() terminates all child FSMs befor it calls fi->fsm_cleanup(). This prevents the cleanup callback to perform last actions on the child FSMs (e.g. osmo_fsm_inst_unlink_parent()). - Since moving the cleanup callack to the beginning of the function would alter the termination behavior and possibly cause malfunction in already existing implementation that use OSMO fsm, a new optional callback that is called immediately at the beginning of the terminatopn process is added. Change-Id: I0fdda9fe994753f975a658c0f3fb3615949cc8bb Closes: OS#2915
Diffstat (limited to 'include')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/osmocom/core/fsm.h b/include/osmocom/core/fsm.h
index bbfe3123..2c2a9961 100644
--- a/include/osmocom/core/fsm.h
+++ b/include/osmocom/core/fsm.h
@@ -78,6 +78,8 @@ struct osmo_fsm {
int log_subsys;
/*! human-readable names of events */
const struct value_string *event_names;
+ /*! graceful exit function, called at the beginning of termination */
+ void (*pre_term)(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause);
/*! a single instanceof an osmocom finite state machine */