diff options
| -rw-r--r-- | include/osmocom/core/fsm.h | 1 | ||||
| -rw-r--r-- | src/fsm.c | 148 | ||||
| -rw-r--r-- | tests/Makefile.am | 1 | ||||
| -rw-r--r-- | tests/fsm/fsm_dealloc_test.c | 7 | ||||
| -rw-r--r-- | tests/fsm/fsm_dealloc_test.err | 3501 | ||||
| -rw-r--r-- | tests/testsuite.at | 6 |
6 files changed, 3433 insertions, 231 deletions
diff --git a/include/osmocom/core/fsm.h b/include/osmocom/core/fsm.h index 07bcd126..c9e1e0cf 100644 --- a/include/osmocom/core/fsm.h +++ b/include/osmocom/core/fsm.h @@ -121,6 +121,7 @@ struct osmo_fsm_inst { void osmo_fsm_log_addr(bool log_addr); void osmo_fsm_log_timeouts(bool log_timeouts); +void osmo_fsm_term_safely(bool term_safely); /*! Log using FSM instance's context, on explicit logging subsystem and level. * \param fi An osmo_fsm_inst. @@ -91,6 +91,18 @@ LLIST_HEAD(osmo_g_fsms); static bool fsm_log_addr = true; static bool fsm_log_timeouts = false; +/*! See osmo_fsm_term_safely(). */ +static bool fsm_term_safely_enabled = false; + +/*! Internal state for FSM instance termination cascades. */ +static __thread struct { + /*! The first FSM instance that invoked osmo_fsm_inst_term() in the current cascade. */ + struct osmo_fsm_inst *root_fi; + /*! 2 if a secondary FSM terminates, 3 if a secondary FSM causes a tertiary FSM to terminate, and so on. */ + unsigned int depth; + /*! Talloc context to collect all deferred deallocations (FSM instances, and talloc objects if any). */ + void *collect_ctx; +} fsm_term_safely; /*! specify if FSM instance addresses should be logged or not * @@ -125,6 +137,68 @@ void osmo_fsm_log_timeouts(bool log_timeouts) fsm_log_timeouts = log_timeouts; } +/*! Enable safer way to deallocate cascades of terminating FSM instances. + * + * For legacy compatibility, this is disabled by default. In newer programs / releases, it is recommended to enable this + * feature during main() startup, since it greatly simplifies deallocating child, parent and other FSM instances without + * running into double-free or use-after-free scenarios. When enabled, this feature changes the order of logging, which + * may break legacy unit test expectations, and changes the order of deallocation to after the parent term event is + * dispatched. + * + * When enabled, an FSM instance termination detects whether another FSM instance is already terminating, and instead of + * deallocating immediately, collects all terminating FSM instances in a talloc context, to be bulk deallocated once all + * event handling and termination cascades are done. + * + * For example, if an FSM's cleanup() sends an event to some "other" FSM, which in turn causes the FSM's parent to + * deallocate, then the parent would talloc_free() the child's memory, causing a use-after-free. There are infinite + * constellations like this, which all are trivially solved with this feature enabled. + * + * For illustration, see fsm_dealloc_test.c. + * + * \param[in] term_safely Pass true to switch to safer FSM instance termination behavior. + */ +void osmo_fsm_term_safely(bool term_safely) +{ + fsm_term_safely_enabled = term_safely; +} + +/*! talloc_free() the given object immediately, or once ongoing FSM terminations are done. + * + * If an FSM deallocation cascade is ongoing, talloc_steal() the given talloc_object into the talloc context that is + * freed once the cascade is done. If no FSM deallocation cascade is ongoing, or if osmo_fsm_term_safely() is disabled, + * immediately talloc_free the object. + * + * This can be useful if some higher order talloc object, which is the talloc parent for FSM instances or their priv + * objects, is not itself tied to an FSM instance. This function allows safely freeing it without affecting ongoing FSM + * termination cascades. + * + * Once passed to this function, the talloc_object should be considered as already freed. Only FSM instance pre_term() + * and cleanup() functions as well as event handling caused by these may safely assume that it is still valid memory. + * + * The talloc_object should not have multiple parents. + * + * (This function may some day move to public API, which might be redundant if we introduce a select-loop volatile + * context mechanism to defer deallocation instead.) + * + * \param[in] talloc_object Object pointer to free. + */ +static void osmo_fsm_defer_free(void *talloc_object) +{ + if (!fsm_term_safely.depth) { + talloc_free(talloc_object); + return; + } + + if (!fsm_term_safely.collect_ctx) { + /* This is actually the first other object / FSM instance besides the root terminating inst. Create the + * ctx to collect this and possibly more objects to free. Avoid talloc parent loops: don't make this ctx + * the child of the root inst or anything like that. */ + fsm_term_safely.collect_ctx = talloc_named_const(NULL, 0, "fsm_term_safely.collect_ctx"); + OSMO_ASSERT(fsm_term_safely.collect_ctx); + } + talloc_steal(fsm_term_safely.collect_ctx, talloc_object); +} + struct osmo_fsm *osmo_fsm_find_by_name(const char *name) { struct osmo_fsm *fsm; @@ -399,10 +473,40 @@ void osmo_fsm_inst_change_parent(struct osmo_fsm_inst *fi, */ void osmo_fsm_inst_free(struct osmo_fsm_inst *fi) { - LOGPFSM(fi, "Deallocated\n"); osmo_timer_del(&fi->timer); llist_del(&fi->list); - talloc_free(fi); + + if (fsm_term_safely.depth) { + /* Another FSM instance has caused this one to free and is still busy with its termination. Don't free + * yet, until the other FSM instance is done. */ + osmo_fsm_defer_free(fi); + /* The root_fi can't go missing really, but to be safe... */ + if (fsm_term_safely.root_fi) + LOGPFSM(fi, "Deferring: will deallocate with %s\n", fsm_term_safely.root_fi->name); + else + LOGPFSM(fi, "Deferring deallocation\n"); + + /* Don't free anything yet. Exit. */ + return; + } + + /* fsm_term_safely.depth == 0. + * - If fsm_term_safely is enabled, this is the original FSM instance that started terminating first. Free this + * and along with it all other collected terminated FSM instances. + * - If fsm_term_safely is disabled, this is just any FSM instance deallocating. */ + + if (fsm_term_safely.collect_ctx) { + /* The fi may be a child of any other FSM instances or objects collected in the collect_ctx. Don't + * deallocate separately to avoid use-after-free errors, put it in there and deallocate all at once. */ + LOGPFSM(fi, "Deallocated, including all deferred deallocations\n"); + osmo_fsm_defer_free(fi); + talloc_free(fsm_term_safely.collect_ctx); + fsm_term_safely.collect_ctx = NULL; + } else { + LOGPFSM(fi, "Deallocated\n"); + talloc_free(fi); + } + fsm_term_safely.root_fi = NULL; } /*! get human-readable name of FSM event @@ -716,8 +820,26 @@ void _osmo_fsm_inst_term(struct osmo_fsm_inst *fi, } fi->proc.terminating = true; - LOGPFSMSRC(fi, file, line, "Terminating (cause = %s)\n", - osmo_fsm_term_cause_name(cause)); + /* Start termination cascade handling only if the feature is enabled. Also check the current depth: though + * unlikely, theoretically the fsm_term_safely_enabled flag could be toggled in the middle of a cascaded + * termination, so make sure to continue if it already started. */ + if (fsm_term_safely_enabled || fsm_term_safely.depth) { + fsm_term_safely.depth++; + /* root_fi is just for logging, so no need to be extra careful about it. */ + if (!fsm_term_safely.root_fi) + fsm_term_safely.root_fi = fi; + } + + if (fsm_term_safely.depth > 1) { + /* fsm_term_safely is enabled and this is a secondary FSM instance terminated, caused by the root_fi. */ + LOGPFSMSRC(fi, file, line, "Terminating in cascade, depth %d (cause = %s, caused by: %s)\n", + fsm_term_safely.depth, osmo_fsm_term_cause_name(cause), + fsm_term_safely.root_fi ? fsm_term_safely.root_fi->name : "unknown"); + /* The root_fi can't go missing really, but to be safe, log "unknown" in that case. */ + } else { + /* fsm_term_safely is disabled, or this is the root_fi. */ + LOGPFSMSRC(fi, file, line, "Terminating (cause = %s)\n", osmo_fsm_term_cause_name(cause)); + } /* graceful exit (optional) */ if (fi->fsm->pre_term) @@ -738,15 +860,29 @@ void _osmo_fsm_inst_term(struct osmo_fsm_inst *fi, if (fi->fsm->cleanup) fi->fsm->cleanup(fi, cause); - LOGPFSMSRC(fi, file, line, "Freeing instance\n"); /* Fetch parent again in case it has changed. */ parent = fi->proc.parent; - osmo_fsm_inst_free(fi); + + /* Legacy behavior if fsm_term_safely is disabled: free before dispatching parent event. (If fsm_term_safely is + * enabled, depth will *always* be > 0 here.) Pivot on depth instead of the enabled flag in case the enabled + * flag is toggled in the middle of an FSM term. */ + if (!fsm_term_safely.depth) { + LOGPFSMSRC(fi, file, line, "Freeing instance\n"); + osmo_fsm_inst_free(fi); + } /* indicate our termination to the parent */ if (parent && cause != OSMO_FSM_TERM_PARENT) _osmo_fsm_inst_dispatch(parent, parent_term_event, data, file, line); + + /* Newer, safe deallocation: free only after the parent_term_event was dispatched, to catch all termination + * cascades, and free all FSM instances at once. (If fsm_term_safely is enabled, depth will *always* be > 0 + * here.) osmo_fsm_inst_free() will do the defer magic depending on the fsm_term_safely.depth. */ + if (fsm_term_safely.depth) { + fsm_term_safely.depth--; + osmo_fsm_inst_free(fi); + } } /*! Terminate all child FSM instances of an FSM instance. diff --git a/tests/Makefile.am b/tests/Makefile.am index 09a1c189..a8a06c53 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -303,6 +303,7 @@ EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE) \ sim/sim_test.ok tlv/tlv_test.ok abis/abis_test.ok \ gsup/gsup_test.ok gsup/gsup_test.err \ oap/oap_test.ok fsm/fsm_test.ok fsm/fsm_test.err \ + fsm/fsm_dealloc_test.err \ write_queue/wqueue_test.ok socket/socket_test.ok \ socket/socket_test.err coding/coding_test.ok \ osmo-auc-gen/osmo-auc-gen_test.sh \ diff --git a/tests/fsm/fsm_dealloc_test.c b/tests/fsm/fsm_dealloc_test.c index 5a493ad2..f8d2b1ee 100644 --- a/tests/fsm/fsm_dealloc_test.c +++ b/tests/fsm/fsm_dealloc_test.c @@ -346,26 +346,24 @@ static struct scene *scene_alloc() LOGP(DLGLOBAL, LOGL_DEBUG, "%s()\n", __func__); - /* s->o[root] = obj_alloc(s, NULL, "root"); - */ s->o[branch0] = obj_alloc(s, s->o[root], "_branch0"); s->o[twig0a] = obj_alloc(s, s->o[branch0], "__twig0a"); - /* s->o[twig0b] = obj_alloc(s, s->o[branch0], "__twig0b"); s->o[branch1] = obj_alloc(s, s->o[root], "_branch1"); s->o[twig1a] = obj_alloc(s, s->o[branch1], "__twig1a"); s->o[twig1b] = obj_alloc(s, s->o[branch1], "__twig1b"); - */ s->o[other] = obj_alloc(s, NULL, "other"); obj_set_other(s->o[branch0], s->o[other]); obj_set_other(s->o[twig0a], s->o[other]); + obj_set_other(s->o[branch1], s->o[other]); + obj_set_other(s->o[twig1a], s->o[root]); return s; } @@ -455,6 +453,7 @@ int main(void) log_set_category_filter(osmo_stderr_target, DLGLOBAL, 1, LOGL_DEBUG); + osmo_fsm_term_safely(true); osmo_fsm_register(&test_fsm); ctx_blocks = talloc_total_blocks(ctx); diff --git a/tests/fsm/fsm_dealloc_test.err b/tests/fsm/fsm_dealloc_test.err index 7f413409..aa7db51e 100644 --- a/tests/fsm/fsm_dealloc_test.err +++ b/tests/fsm/fsm_dealloc_test.err @@ -1,87 +1,888 @@ DLGLOBAL DEBUG scene_alloc() +DLGLOBAL DEBUG test(root){alive}: Allocated +DLGLOBAL DEBUG test(root){alive}: Allocated +DLGLOBAL DEBUG test(root){alive}: is child of test(root) DLGLOBAL DEBUG test(_branch0){alive}: Allocated +DLGLOBAL DEBUG test(_branch0){alive}: is child of test(_branch0) DLGLOBAL DEBUG test(_branch0){alive}: Allocated DLGLOBAL DEBUG test(_branch0){alive}: is child of test(_branch0) +DLGLOBAL DEBUG test(root){alive}: Allocated +DLGLOBAL DEBUG test(root){alive}: is child of test(root) +DLGLOBAL DEBUG test(_branch1){alive}: Allocated +DLGLOBAL DEBUG test(_branch1){alive}: is child of test(_branch1) +DLGLOBAL DEBUG test(_branch1){alive}: Allocated +DLGLOBAL DEBUG test(_branch1){alive}: is child of test(_branch1) DLGLOBAL DEBUG test(other){alive}: Allocated DLGLOBAL DEBUG test(_branch0){alive}: _branch0.other[0] = other DLGLOBAL DEBUG test(other){alive}: other.other[0] = _branch0 DLGLOBAL DEBUG test(__twig0a){alive}: __twig0a.other[0] = other DLGLOBAL DEBUG test(other){alive}: other.other[1] = __twig0a -DLGLOBAL DEBUG --- Test disabled: object 0 was not created. Cleaning up. -DLGLOBAL DEBUG test(_branch0){alive}: Terminating (cause = OSMO_FSM_TERM_ERROR) -DLGLOBAL DEBUG test(_branch0){alive}: pre_term() -DLGLOBAL DEBUG test(__twig0a){alive}: Terminating (cause = OSMO_FSM_TERM_PARENT) +DLGLOBAL DEBUG test(_branch1){alive}: _branch1.other[0] = other +DLGLOBAL DEBUG test(other){alive}: other.other[1] = _branch1 +DLGLOBAL DEBUG test(__twig1a){alive}: __twig1a.other[0] = root +DLGLOBAL DEBUG test(root){alive}: root.other[0] = __twig1a +DLGLOBAL DEBUG ------ before term cascade, got: +DLGLOBAL DEBUG root +DLGLOBAL DEBUG _branch0 +DLGLOBAL DEBUG __twig0a +DLGLOBAL DEBUG __twig0b +DLGLOBAL DEBUG _branch1 +DLGLOBAL DEBUG __twig1a +DLGLOBAL DEBUG __twig1b +DLGLOBAL DEBUG other +DLGLOBAL DEBUG --- +DLGLOBAL DEBUG --- term at root +DLGLOBAL DEBUG test(root){alive}: Terminating (cause = OSMO_FSM_TERM_REGULAR) +DLGLOBAL DEBUG test(root){alive}: pre_term() +DLGLOBAL DEBUG test(_branch1){alive}: Terminating in cascade, depth 2 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(_branch1){alive}: pre_term() +DLGLOBAL DEBUG test(__twig1b){alive}: Terminating in cascade, depth 3 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(__twig1b){alive}: pre_term() +DLGLOBAL DEBUG test(__twig1b){alive}: Removing from parent test(_branch1) +DLGLOBAL DEBUG 1 (__twig1b.cleanup()) +DLGLOBAL DEBUG test(__twig1b){alive}: cleanup() +DLGLOBAL DEBUG test(__twig1b){alive}: scene forgets __twig1b +DLGLOBAL DEBUG test(_branch1){alive}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 2 (__twig1b.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG test(_branch1){alive}: alive(EV_CHILD_GONE) +DLGLOBAL DEBUG 3 (__twig1b.cleanup(),_branch1.alive(),_branch1.child_gone()) +DLGLOBAL DEBUG test(_branch1){alive}: EV_CHILD_GONE: Dropped reference _branch1.child[1] = __twig1b +DLGLOBAL DEBUG test(_branch1){alive}: still exists: child[0] +DLGLOBAL DEBUG 2 (__twig1b.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG 1 (__twig1b.cleanup()) +DLGLOBAL DEBUG test(__twig1b){alive}: cleanup() done +DLGLOBAL DEBUG 0 (-) +DLGLOBAL DEBUG test(__twig1b){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(__twig1a){alive}: Terminating in cascade, depth 3 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(__twig1a){alive}: pre_term() +DLGLOBAL DEBUG test(__twig1a){alive}: Removing from parent test(_branch1) +DLGLOBAL DEBUG 1 (__twig1a.cleanup()) +DLGLOBAL DEBUG test(__twig1a){alive}: cleanup() +DLGLOBAL DEBUG test(__twig1a){alive}: scene forgets __twig1a +DLGLOBAL DEBUG test(__twig1a){alive}: removing reference __twig1a.other[0] -> root +DLGLOBAL DEBUG test(root){alive}: Received Event EV_OTHER_GONE +DLGLOBAL DEBUG 2 (__twig1a.cleanup(),root.alive()) +DLGLOBAL DEBUG test(root){alive}: alive(EV_OTHER_GONE) +DLGLOBAL DEBUG 3 (__twig1a.cleanup(),root.alive(),root.other_gone()) +DLGLOBAL DEBUG test(root){alive}: EV_OTHER_GONE: Dropped reference root.other[0] = __twig1a +DLGLOBAL DEBUG 2 (__twig1a.cleanup(),root.alive()) +DLGLOBAL DEBUG test(root){alive}: state_chg to destroying +DLGLOBAL DEBUG 3 (__twig1a.cleanup(),root.alive(),root.destroying_onenter()) +DLGLOBAL DEBUG test(root){destroying}: destroying_onenter() from alive +DLGLOBAL DEBUG test(root){destroying}: Ignoring trigger to terminate: already terminating +DLGLOBAL DEBUG 2 (__twig1a.cleanup(),root.alive()) +DLGLOBAL DEBUG 1 (__twig1a.cleanup()) +DLGLOBAL DEBUG test(_branch1){alive}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 2 (__twig1a.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG test(_branch1){alive}: alive(EV_CHILD_GONE) +DLGLOBAL DEBUG 3 (__twig1a.cleanup(),_branch1.alive(),_branch1.child_gone()) +DLGLOBAL DEBUG test(_branch1){alive}: EV_CHILD_GONE: Dropped reference _branch1.child[0] = __twig1a +DLGLOBAL DEBUG test(_branch1){alive}: No more children +DLGLOBAL DEBUG 2 (__twig1a.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG test(_branch1){alive}: state_chg to destroying +DLGLOBAL DEBUG 3 (__twig1a.cleanup(),_branch1.alive(),_branch1.destroying_onenter()) +DLGLOBAL DEBUG test(_branch1){destroying}: destroying_onenter() from alive +DLGLOBAL DEBUG test(_branch1){destroying}: Ignoring trigger to terminate: already terminating +DLGLOBAL DEBUG 2 (__twig1a.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG 1 (__twig1a.cleanup()) +DLGLOBAL DEBUG test(__twig1a){alive}: cleanup() done +DLGLOBAL DEBUG 0 (-) +DLGLOBAL DEBUG test(__twig1a){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(_branch1){destroying}: Removing from parent test(root) +DLGLOBAL DEBUG 1 (_branch1.cleanup()) +DLGLOBAL DEBUG test(_branch1){destroying}: cleanup() +DLGLOBAL DEBUG test(_branch1){destroying}: scene forgets _branch1 +DLGLOBAL DEBUG test(_branch1){destroying}: removing reference _branch1.other[0] -> other +DLGLOBAL DEBUG test(other){alive}: Received Event EV_OTHER_GONE +DLGLOBAL DEBUG 2 (_branch1.cleanup(),other.alive()) +DLGLOBAL DEBUG test(other){alive}: alive(EV_OTHER_GONE) +DLGLOBAL DEBUG 3 (_branch1.cleanup(),other.alive(),other.other_gone()) +DLGLOBAL DEBUG test(other){alive}: EV_OTHER_GONE: Dropped reference other.other[1] = _branch1 +DLGLOBAL DEBUG 2 (_branch1.cleanup(),other.alive()) +DLGLOBAL DEBUG test(other){alive}: state_chg to destroying +DLGLOBAL DEBUG 3 (_branch1.cleanup(),other.alive(),other.destroying_onenter()) +DLGLOBAL DEBUG test(other){destroying}: destroying_onenter() from alive +DLGLOBAL DEBUG test(other){destroying}: Terminating in cascade, depth 3 (cause = OSMO_FSM_TERM_REGULAR, caused by: test(root)) +DLGLOBAL DEBUG test(other){destroying}: pre_term() +DLGLOBAL DEBUG 4 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup()) +DLGLOBAL DEBUG test(other){destroying}: cleanup() +DLGLOBAL DEBUG test(other){destroying}: scene forgets other +DLGLOBAL DEBUG test(other){destroying}: removing reference other.other[0] -> _branch0 +DLGLOBAL DEBUG test(_branch0){alive}: Received Event EV_OTHER_GONE +DLGLOBAL DEBUG 5 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive()) +DLGLOBAL DEBUG test(_branch0){alive}: alive(EV_OTHER_GONE) +DLGLOBAL DEBUG 6 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.other_gone()) +DLGLOBAL DEBUG test(_branch0){alive}: EV_OTHER_GONE: Dropped reference _branch0.other[0] = other +DLGLOBAL DEBUG 5 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive()) +DLGLOBAL DEBUG test(_branch0){alive}: state_chg to destroying +DLGLOBAL DEBUG 6 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter()) +DLGLOBAL DEBUG test(_branch0){destroying}: destroying_onenter() from alive +DLGLOBAL DEBUG test(_branch0){destroying}: Terminating in cascade, depth 4 (cause = OSMO_FSM_TERM_REGULAR, caused by: test(root)) +DLGLOBAL DEBUG test(_branch0){destroying}: pre_term() +DLGLOBAL DEBUG test(__twig0b){alive}: Terminating in cascade, depth 5 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(__twig0b){alive}: pre_term() +DLGLOBAL DEBUG test(__twig0b){alive}: Removing from parent test(_branch0) +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(__twig0b){alive}: cleanup() +DLGLOBAL DEBUG test(__twig0b){alive}: scene forgets __twig0b +DLGLOBAL DEBUG test(_branch0){destroying}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(_branch0){destroying}: destroying(EV_CHILD_GONE) +DLGLOBAL DEBUG 9 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(_branch0){destroying}: EV_CHILD_GONE: Dropped reference _branch0.child[1] = __twig0b +DLGLOBAL DEBUG test(_branch0){destroying}: still exists: child[0] +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(__twig0b){alive}: cleanup() done +DLGLOBAL DEBUG 6 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter()) +DLGLOBAL DEBUG test(__twig0b){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(__twig0a){alive}: Terminating in cascade, depth 5 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) DLGLOBAL DEBUG test(__twig0a){alive}: pre_term() DLGLOBAL DEBUG test(__twig0a){alive}: Removing from parent test(_branch0) -DLGLOBAL DEBUG 1 (__twig0a.cleanup()) +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ DLGLOBAL DEBUG test(__twig0a){alive}: cleanup() DLGLOBAL DEBUG test(__twig0a){alive}: scene forgets __twig0a DLGLOBAL DEBUG test(__twig0a){alive}: removing reference __twig0a.other[0] -> other +DLGLOBAL DEBUG test(other){destroying}: Received Event EV_OTHER_GONE +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(other){destroying}: destroying(EV_OTHER_GONE) +DLGLOBAL DEBUG 9 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(_branch0){destroying}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(_branch0){destroying}: destroying(EV_CHILD_GONE) +DLGLOBAL DEBUG 9 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(_branch0){destroying}: EV_CHILD_GONE: Dropped reference _branch0.child[0] = __twig0a +DLGLOBAL DEBUG test(_branch0){destroying}: No more children +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(__twig0a){alive}: cleanup() done +DLGLOBAL DEBUG 6 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter()) +DLGLOBAL DEBUG test(__twig0a){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(_branch0){destroying}: Removing from parent test(root) +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(_branch0){destroying}: cleanup() +DLGLOBAL DEBUG test(_branch0){destroying}: scene forgets _branch0 +DLGLOBAL DEBUG test(root){destroying}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(root){destroying}: destroying(EV_CHILD_GONE) +DLGLOBAL DEBUG 9 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(root){destroying}: EV_CHILD_GONE: Dropped reference root.child[0] = _branch0 +DLGLOBAL DEBUG test(root){destroying}: still exists: child[1] +DLGLOBAL DEBUG 8 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),_ +DLGLOBAL DEBUG test(_branch0){destroying}: cleanup() done +DLGLOBAL DEBUG 6 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter()) +DLGLOBAL DEBUG test(root){destroying}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 7 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter(),r +DLGLOBAL DEBUG test(root){destroying}: destroying(EV_CHILD_GONE) +DLGLOBAL DEBUG test(root){destroying}: EV_CHILD_GONE with NULL data, must be a parent_term event. Ignore. +DLGLOBAL DEBUG 6 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter()) +DLGLOBAL DEBUG test(_branch0){destroying}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG 5 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive()) +DLGLOBAL DEBUG 4 (_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup()) +DLGLOBAL DEBUG test(other){destroying}: cleanup() done +DLGLOBAL DEBUG 3 (_branch1.cleanup(),other.alive(),other.destroying_onenter()) +DLGLOBAL DEBUG test(other){destroying}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG 2 (_branch1.cleanup(),other.alive()) +DLGLOBAL DEBUG 1 (_branch1.cleanup()) +DLGLOBAL DEBUG test(root){destroying}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 2 (_branch1.cleanup(),root.destroying()) +DLGLOBAL DEBUG test(root){destroying}: destroying(EV_CHILD_GONE) +DLGLOBAL DEBUG 3 (_branch1.cleanup(),root.destroying(),root.child_gone()) +DLGLOBAL DEBUG test(root){destroying}: EV_CHILD_GONE: Dropped reference root.child[1] = _branch1 +DLGLOBAL DEBUG test(root){destroying}: No more children +DLGLOBAL DEBUG 2 (_branch1.cleanup(),root.destroying()) +DLGLOBAL DEBUG 1 (_branch1.cleanup()) +DLGLOBAL DEBUG test(_branch1){destroying}: cleanup() done +DLGLOBAL DEBUG 0 (-) +DLGLOBAL DEBUG test(_branch1){destroying}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG 1 (root.cleanup()) +DLGLOBAL DEBUG test(root){destroying}: cleanup() +DLGLOBAL DEBUG test(root){destroying}: scene forgets root +DLGLOBAL DEBUG test(root){destroying}: cleanup() done +DLGLOBAL DEBUG 0 (-) +DLGLOBAL DEBUG test(root){destroying}: Deallocated, including all deferred deallocations +DLGLOBAL DEBUG --- after term cascade: +DLGLOBAL DEBUG --- all deallocated. +DLGLOBAL DEBUG scene_alloc() +DLGLOBAL DEBUG test(root){alive}: Allocated +DLGLOBAL DEBUG test(root){alive}: Allocated +DLGLOBAL DEBUG test(root){alive}: is child of test(root) +DLGLOBAL DEBUG test(_branch0){alive}: Allocated +DLGLOBAL DEBUG test(_branch0){alive}: is child of test(_branch0) +DLGLOBAL DEBUG test(_branch0){alive}: Allocated +DLGLOBAL DEBUG test(_branch0){alive}: is child of test(_branch0) +DLGLOBAL DEBUG test(root){alive}: Allocated +DLGLOBAL DEBUG test(root){alive}: is child of test(root) +DLGLOBAL DEBUG test(_branch1){alive}: Allocated +DLGLOBAL DEBUG test(_branch1){alive}: is child of test(_branch1) +DLGLOBAL DEBUG test(_branch1){alive}: Allocated +DLGLOBAL DEBUG test(_branch1){alive}: is child of test(_branch1) +DLGLOBAL DEBUG test(other){alive}: Allocated +DLGLOBAL DEBUG test(_branch0){alive}: _branch0.other[0] = other +DLGLOBAL DEBUG test(other){alive}: other.other[0] = _branch0 +DLGLOBAL DEBUG test(__twig0a){alive}: __twig0a.other[0] = other +DLGLOBAL DEBUG test(other){alive}: other.other[1] = __twig0a +DLGLOBAL DEBUG test(_branch1){alive}: _branch1.other[0] = other +DLGLOBAL DEBUG test(other){alive}: other.other[1] = _branch1 +DLGLOBAL DEBUG test(__twig1a){alive}: __twig1a.other[0] = root +DLGLOBAL DEBUG test(root){alive}: root.other[0] = __twig1a +DLGLOBAL DEBUG ------ before destroy-event cascade, got: +DLGLOBAL DEBUG root +DLGLOBAL DEBUG _branch0 +DLGLOBAL DEBUG __twig0a +DLGLOBAL DEBUG __twig0b +DLGLOBAL DEBUG _branch1 +DLGLOBAL DEBUG __twig1a +DLGLOBAL DEBUG __twig1b +DLGLOBAL DEBUG other +DLGLOBAL DEBUG --- +DLGLOBAL DEBUG --- destroy-event at root +DLGLOBAL DEBUG test(root){alive}: Received Event EV_DESTROY +DLGLOBAL DEBUG 1 (root.alive()) +DLGLOBAL DEBUG test(root){alive}: alive(EV_DESTROY) +DLGLOBAL DEBUG test(root){alive}: state_chg to destroying +DLGLOBAL DEBUG 2 (root.alive(),root.destroying_onenter()) +DLGLOBAL DEBUG test(root){destroying}: destroying_onenter() from alive +DLGLOBAL DEBUG test(root){destroying}: Terminating (cause = OSMO_FSM_TERM_REGULAR) +DLGLOBAL DEBUG test(root){destroying}: pre_term() +DLGLOBAL DEBUG test(_branch1){alive}: Terminating in cascade, depth 2 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(_branch1){alive}: pre_term() +DLGLOBAL DEBUG test(__twig1b){alive}: Terminating in cascade, depth 3 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(__twig1b){alive}: pre_term() +DLGLOBAL DEBUG test(__twig1b){alive}: Removing from parent test(_branch1) +DLGLOBAL DEBUG 3 (root.alive(),root.destroying_onenter(),__twig1b.cleanup()) +DLGLOBAL DEBUG test(__twig1b){alive}: cleanup() +DLGLOBAL DEBUG test(__twig1b){alive}: scene forgets __twig1b +DLGLOBAL DEBUG test(_branch1){alive}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),__twig1b.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG test(_branch1){alive}: alive(EV_CHILD_GONE) +DLGLOBAL DEBUG 5 (root.alive(),root.destroying_onenter(),__twig1b.cleanup(),_branch1.alive(),_branch1.child_gone()) +DLGLOBAL DEBUG test(_branch1){alive}: EV_CHILD_GONE: Dropped reference _branch1.child[1] = __twig1b +DLGLOBAL DEBUG test(_branch1){alive}: still exists: child[0] +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),__twig1b.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG 3 (root.alive(),root.destroying_onenter(),__twig1b.cleanup()) +DLGLOBAL DEBUG test(__twig1b){alive}: cleanup() done +DLGLOBAL DEBUG 2 (root.alive(),root.destroying_onenter()) +DLGLOBAL DEBUG test(__twig1b){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(__twig1a){alive}: Terminating in cascade, depth 3 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(__twig1a){alive}: pre_term() +DLGLOBAL DEBUG test(__twig1a){alive}: Removing from parent test(_branch1) +DLGLOBAL DEBUG 3 (root.alive(),root.destroying_onenter(),__twig1a.cleanup()) +DLGLOBAL DEBUG test(__twig1a){alive}: cleanup() +DLGLOBAL DEBUG test(__twig1a){alive}: scene forgets __twig1a +DLGLOBAL DEBUG test(__twig1a){alive}: removing reference __twig1a.other[0] -> root +DLGLOBAL DEBUG test(root){destroying}: Received Event EV_OTHER_GONE +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),root.destroying()) +DLGLOBAL DEBUG test(root){destroying}: destroying(EV_OTHER_GONE) +DLGLOBAL DEBUG 5 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),root.destroying(),root.other_gone()) +DLGLOBAL DEBUG test(root){destroying}: EV_OTHER_GONE: Dropped reference root.other[0] = __twig1a +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),root.destroying()) +DLGLOBAL DEBUG 3 (root.alive(),root.destroying_onenter(),__twig1a.cleanup()) +DLGLOBAL DEBUG test(_branch1){alive}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG test(_branch1){alive}: alive(EV_CHILD_GONE) +DLGLOBAL DEBUG 5 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),_branch1.alive(),_branch1.child_gone()) +DLGLOBAL DEBUG test(_branch1){alive}: EV_CHILD_GONE: Dropped reference _branch1.child[0] = __twig1a +DLGLOBAL DEBUG test(_branch1){alive}: No more children +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG test(_branch1){alive}: state_chg to destroying +DLGLOBAL DEBUG 5 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),_branch1.alive(),_branch1.destroying_onenter()) +DLGLOBAL DEBUG test(_branch1){destroying}: destroying_onenter() from alive +DLGLOBAL DEBUG test(_branch1){destroying}: Ignoring trigger to terminate: already terminating +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),__twig1a.cleanup(),_branch1.alive()) +DLGLOBAL DEBUG 3 (root.alive(),root.destroying_onenter(),__twig1a.cleanup()) +DLGLOBAL DEBUG test(__twig1a){alive}: cleanup() done +DLGLOBAL DEBUG 2 (root.alive(),root.destroying_onenter()) +DLGLOBAL DEBUG test(__twig1a){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(_branch1){destroying}: Removing from parent test(root) +DLGLOBAL DEBUG 3 (root.alive(),root.destroying_onenter(),_branch1.cleanup()) +DLGLOBAL DEBUG test(_branch1){destroying}: cleanup() +DLGLOBAL DEBUG test(_branch1){destroying}: scene forgets _branch1 +DLGLOBAL DEBUG test(_branch1){destroying}: removing reference _branch1.other[0] -> other DLGLOBAL DEBUG test(other){alive}: Received Event EV_OTHER_GONE -DLGLOBAL DEBUG 2 (__twig0a.cleanup(),other.alive()) +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive()) DLGLOBAL DEBUG test(other){alive}: alive(EV_OTHER_GONE) -DLGLOBAL DEBUG 3 (__twig0a.cleanup(),other.alive(),other.other_gone()) -DLGLOBAL DEBUG test(other){alive}: EV_OTHER_GONE: Dropped reference other.other[1] = __twig0a -DLGLOBAL DEBUG 2 (__twig0a.cleanup(),other.alive()) +DLGLOBAL DEBUG 5 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.other_gone()) +DLGLOBAL DEBUG test(other){alive}: EV_OTHER_GONE: Dropped reference other.other[1] = _branch1 +DLGLOBAL DEBUG 4 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive()) DLGLOBAL DEBUG test(other){alive}: state_chg to destroying -DLGLOBAL DEBUG 3 (__twig0a.cleanup(),other.alive(),other.destroying_onenter()) +DLGLOBAL DEBUG 5 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter()) DLGLOBAL DEBUG test(other){destroying}: destroying_onenter() from alive -DLGLOBAL DEBUG test(other){destroying}: Terminating (cause = OSMO_FSM_TERM_REGULAR) +DLGLOBAL DEBUG test(other){destroying}: Terminating in cascade, depth 3 (cause = OSMO_FSM_TERM_REGULAR, caused by: test(root)) DLGLOBAL DEBUG test(other){destroying}: pre_term() -DLGLOBAL DEBUG 4 (__twig0a.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup()) +DLGLOBAL DEBUG 6 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup()) DLGLOBAL DEBUG test(other){destroying}: cleanup() DLGLOBAL DEBUG test(other){destroying}: scene forgets other DLGLOBAL DEBUG test(other){destroying}: removing reference other.other[0] -> _branch0 DLGLOBAL DEBUG test(_branch0){alive}: Received Event EV_OTHER_GONE -DLGLOBAL DEBUG 5 (__twig0a.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive()) +DLGLOBAL DEBUG 7 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. DLGLOBAL DEBUG test(_branch0){alive}: alive(EV_OTHER_GONE) -DLGLOBAL DEBUG 6 (__twig0a.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.other_gone()) +DLGLOBAL DEBUG 8 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. DLGLOBAL DEBUG test(_branch0){alive}: EV_OTHER_GONE: Dropped reference _branch0.other[0] = other -DLGLOBAL DEBUG 5 (__twig0a.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive()) +DLGLOBAL DEBUG 7 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. DLGLOBAL DEBUG test(_branch0){alive}: state_chg to destroying -DLGLOBAL DEBUG 6 (__twig0a.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive(),_branch0.destroying_onenter()) +DLGLOBAL DEBUG 8 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. DLGLOBAL DEBUG test(_branch0){destroying}: destroying_onenter() from alive -DLGLOBAL DEBUG test(_branch0){destroying}: Ignoring trigger to terminate: already terminating -DLGLOBAL DEBUG 5 (__twig0a.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0.alive()) -DLGLOBAL DEBUG 4 (__twig0a.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup()) -DLGLOBAL DEBUG test(other){destroying}: cleanup() done -DLGLOBAL DEBUG 3 (__twig0a.cleanup(),other.alive(),other.destroying_onenter()) -DLGLOBAL DEBUG test(other){destroying}: Freeing instance -DLGLOBAL DEBUG test(other){destroying}: Deallocated -DLGLOBAL DEBUG 2 (__twig0a.cleanup(),other.alive()) -DLGLOBAL DEBUG 1 (__twig0a.cleanup()) +DLGLOBAL DEBUG test(_branch0){destroying}: Terminating in cascade, depth 4 (cause = OSMO_FSM_TERM_REGULAR, caused by: test(root)) +DLGLOBAL DEBUG test(_branch0){destroying}: pre_term() +DLGLOBAL DEBUG test(__twig0b){alive}: Terminating in cascade, depth 5 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(__twig0b){alive}: pre_term() +DLGLOBAL DEBUG test(__twig0b){alive}: Removing from parent test(_branch0) +DLGLOBAL DEBUG 9 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(__twig0b){alive}: cleanup() +DLGLOBAL DEBUG test(__twig0b){alive}: scene forgets __twig0b DLGLOBAL DEBUG test(_branch0){destroying}: Received Event EV_CHILD_GONE -DLGLOBAL DEBUG 2 (__twig0a.cleanup(),_branch0.destroying()) +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 DLGLOBAL DEBUG test(_branch0){destroying}: destroying(EV_CHILD_GONE) -DLGLOBAL DEBUG 3 (__twig0a.cleanup(),_branch0.destroying(),_branch0.child_gone()) +DLGLOBAL DEBUG 11 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG test(_branch0){destroying}: EV_CHILD_GONE: Dropped reference _branch0.child[1] = __twig0b +DLGLOBAL DEBUG test(_branch0){destroying}: still exists: child[0] +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG 9 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(__twig0b){alive}: cleanup() done +DLGLOBAL DEBUG 8 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(__twig0b){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(__twig0a){alive}: Terminating in cascade, depth 5 (cause = OSMO_FSM_TERM_PARENT, caused by: test(root)) +DLGLOBAL DEBUG test(__twig0a){alive}: pre_term() +DLGLOBAL DEBUG test(__twig0a){alive}: Removing from parent test(_branch0) +DLGLOBAL DEBUG 9 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(__twig0a){alive}: cleanup() +DLGLOBAL DEBUG test(__twig0a){alive}: scene forgets __twig0a +DLGLOBAL DEBUG test(__twig0a){alive}: removing reference __twig0a.other[0] -> other +DLGLOBAL DEBUG test(other){destroying}: Received Event EV_OTHER_GONE +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG test(other){destroying}: destroying(EV_OTHER_GONE) +DLGLOBAL DEBUG 11 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG 9 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(_branch0){destroying}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG test(_branch0){destroying}: destroying(EV_CHILD_GONE) +DLGLOBAL DEBUG 11 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 DLGLOBAL DEBUG test(_branch0){destroying}: EV_CHILD_GONE: Dropped reference _branch0.child[0] = __twig0a DLGLOBAL DEBUG test(_branch0){destroying}: No more children -DLGLOBAL DEBUG 2 (__twig0a.cleanup(),_branch0.destroying()) +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG 9 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(__twig0a){alive}: cleanup() done +DLGLOBAL DEBUG 8 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(__twig0a){alive}: Deferring: will deallocate with test(root) +DLGLOBAL DEBUG test(_branch0){destroying}: Removing from parent test(root) +DLGLOBAL DEBUG 9 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0. +DLGLOBAL DEBUG test(_branch0){destroying}: cleanup() +DLGLOBAL DEBUG test(_branch0){destroying}: scene forgets _branch0 +DLGLOBAL DEBUG test(root){destroying}: Received Event EV_CHILD_GONE +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG test(root){destroying}: destroying(EV_CHILD_GONE) +DLGLOBAL DEBUG 11 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG test(root){destroying}: EV_CHILD_GONE: Dropped reference root.child[0] = _branch0 +DLGLOBAL DEBUG test(root){destroying}: still exists: child[1] +DLGLOBAL DEBUG 10 (root.alive(),root.destroying_onenter(),_branch1.cleanup(),other.alive(),other.destroying_onenter(),other.cleanup(),_branch0 +DLGLOBAL DEBUG 9 (ro |