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* add osmo_fsm_inst_update_id_f()Neels Hofmeyr2018-04-092-0/+51
| | | | | | | | | | | | | | | | In the osmo-msc, I would like to set the subscr conn FSM identifier by a string format, to include the type of Complete Layer 3 that is taking place. I could each time talloc a string and free it again. This API is more convenient. From osmo_fsm_inst_update_id(), call osmo_fsm_inst_update_id_f() with "%s" (or pass NULL). Put the name updating into separate static update_name() function to clarify. Adjust the error message for erratic ID: don't say "allocate", it might be from an update. Adjust test expectation. Change-Id: I76743a7642f2449fd33350691ac8ebbf4400371d
* cosmetic: osmo_fsm_inst_update_id(): don't log "allocate"Neels Hofmeyr2018-04-091-2/+2
| | | | | | | | | On erratic id in osmo_fsm_inst_update_id(), don't say "Attempting to allocate FSM instance". Escape the invalid id using osmo_quote_str(). Change-Id: I770fc460de21faa42b403f694e853e8da01c4bef
* fsm: id: properly set name in case of NULL idNeels Hofmeyr2018-04-092-14/+1
| | | | | | | | | | Since alloc relies on osmo_fsm_inst_update_id() to set the name, never skip that. In osmo_fsm_inst_alloc(), we allow passing a NULL id, and in osmo_fsm_inst_update_id(), we set the name without id if id is NULL. Change-Id: I6d6b09a811b82770818f19b189a57d9fc4a8133b
* fsm_test: more thoroughly test FSM inst ids and namesNeels Hofmeyr2018-04-092-7/+138
| | | | | | | | | | | | | | | | | | Place id and name testing in its separate section, test_id_api(). Add a test that actually allocates an FSM instance with a NULL id, which is allowed, but uncovers a bug of an unset FSM instance name. osmo_fsm_inst_name() falls back to the fsm struct's name on NULL, but osmo_fsm_inst_find_by_name() fails to match if the instance's name is NULL (and until recently even crashed). Show this in fsm_test.c with loud comments. Add test to clear the id by passing NULL. Add test for setting an empty id. Add test for setting an invalid identifier (osmo_identifier_valid() == false). Change-Id: I646ed918576ce196c395dc5f42a1507c52ace2c5
* fsm_test: terminate the main loop instead of exit on timeoutNeels Hofmeyr2018-04-092-2/+7
| | | | | | | | | | | | | | | In fsm_test.c, we have FSM instance cleanup after the select main loop, but we exit(0) in the timer cb; hence the final code is never called. Rather clean up the instance and hence also test that, by using a global flag to exit the main loop upon timeout. Adjust expected stderr output. BTW, in a subsequent commit, I want to move the fsm instance id testing to below the main loop, to more clearly group the tested bits. Change-Id: Ia47811ffcc1bd68d2630c86be7ab98fc1f338773
* fsm: Update the name as well if the id is updated and accept NULLDaniel Willmann2018-03-191-0/+4
| | | | | | | | | If the name stays the same the log messages will still log with the old id. Since we can now change the id we need to update the name as well. NULL as id was allowed before so we should allow that as well. Change-Id: I6b01eb10b8a05fee3e4a5cdefdcf3ce9f79545b4
* print BIG FAT ERROR message if osmo_fsm lacks event namesStefan Sperling2018-02-262-4/+11
| | | | | | | | | | | | Event names are displayed in VTY commands so all FSM should have them. Print an error message if an FSM is registered without event names. We could also return an error code, however at present no caller checks the return value of osmo_fsm_register() so this would be pointless. Add event names to the test FSM and update expected output accordingly. Change-Id: I08b100d62b5c50bf025ef87d31ea39072539cf37 Related: OS#3008
* fsm_test.c: fix unreachable checkVadim Yanitskiy2017-05-151-1/+3
| | | | Change-Id: Ic3d5da00f7ece6dbcd4c999187a5748c9331e60f
* control_if: Add control interface commands for FSMsHarald Welte2017-04-272-11/+45
| | | | | | | | | This allows programmatic access to introspection of FSM instances, which is quite handy from e.g. external test cases: Send a message to the code, then use the CTRL interface to check if that message has triggered the right kind of state transition. Change-Id: I0f80340ee9c61c88962fdd6764a6098a844d0d1e
* osmo_fsm: Lookup functions to find FSM Instance by name or IDHarald Welte2017-04-162-9/+15
| | | | | | | Introduce two lookup helper functions to resolve a fsm_instance based on the FSM and name or ID. Also, add related test cases. Change-Id: I707f3ed2795c28a924e64adc612d378c21baa815
* fsm_test.c: fix compiler warning: timer cb return typeNeels Hofmeyr2016-12-241-1/+1
| | | | Change-Id: Ifd7e85cd69b5e7e473000abc1ef7a56748aafc0e
* fsm: add LOGPFSML to pass explicit logging levelNeels Hofmeyr2016-12-141-1/+1
| | | | | | | | | | | | | | Provide one central LOGPFSML to print FSM information, take the FSM logging subsystem from the FSM instance but use an explicitly provided log level instead of the FSM's default level. Use to replace some, essentially, duplications of the LOGPFSM macro. In effect, the fsm_test's expected error changes, since the previous code dup for logging events used round braces to indicate the fi's state, while the central macro uses curly braces. Change-Id: If295fdabb3f31a0fd9490d1e0df57794c75ae547
* Add logging and testing for FSM deallocationMax2016-11-081-4/+5
| | | | | | | | osmo_fsm_inst_alloc() logs allocation but osmo_fsm_inst_free() is silent. Fix this by adding log message for deallocation to make FSM lifecycle tracking easier. Also make sure it's covered by test suite. Change-Id: I7e5b55a1fff8e36cf61c7fb61d3e79c1f00e29d2
* Add osmo_fsm_unregister() to headerMax2016-11-021-0/+1
| | | | | | | Previously function was defined but not exposed so there were a way to register FSM but no way to unregister it. Change-Id: I2e749d896009784b77d6d5952fcc38e1c131db2b
* Add Finite State Machine abstraction codeHarald Welte2016-06-163-0/+166
This code is supposed to formalize some of the state machine handling in Osmocom code. Change-Id: I0b0965a912598c1f6b84042a99fea9d522642466 Reviewed-on: https://gerrit.osmocom.org/163 Tested-by: Jenkins Builder Reviewed-by: Harald Welte <laforge@gnumonks.org>
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