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author | Rickard Green <[email protected]> | 2019-07-22 11:37:11 +0200 |
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committer | Rickard Green <[email protected]> | 2019-07-22 11:37:11 +0200 |
commit | 9d1b3bb0db87cf95cb821af01189f6d6be072f79 (patch) | |
tree | 03ca2d109430b8a51bb3aa452d88f34f991d67d9 /erts/emulator/beam/erl_bif_persistent.c | |
parent | aa928af9c9a147d1cdfebfaf26016ef17c389d18 (diff) | |
parent | bcffb7f5599efb62f13128e6feeb03a65cd9c11e (diff) | |
download | otp-9d1b3bb0db87cf95cb821af01189f6d6be072f79.tar.gz otp-9d1b3bb0db87cf95cb821af01189f6d6be072f79.tar.bz2 otp-9d1b3bb0db87cf95cb821af01189f6d6be072f79.zip |
Merge branch 'maint'
* maint:
Fix etp-ets-tables
Fix node refc test for free processes hanging around
Enhanced node refc bookkeeping
Fix node container refc tests of ETS
Fix node refc test of external data
Node container refc test for persistent terms
Include persistent term storage in node/dist refc check
Fix node refc test for system message queue
Diffstat (limited to 'erts/emulator/beam/erl_bif_persistent.c')
-rw-r--r-- | erts/emulator/beam/erl_bif_persistent.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_bif_persistent.c b/erts/emulator/beam/erl_bif_persistent.c index f38e0cc5cb..8662a9e33a 100644 --- a/erts/emulator/beam/erl_bif_persistent.c +++ b/erts/emulator/beam/erl_bif_persistent.c @@ -1234,3 +1234,102 @@ next_to_delete(void) erts_mtx_unlock(&delete_queue_mtx); return table; } + +/* + * test/debug functionality follow... + */ + +static Uint accessed_literal_areas_size; +static Uint accessed_no_literal_areas; +static ErtsLiteralArea **accessed_literal_areas; + +int +erts_debug_have_accessed_literal_area(ErtsLiteralArea *lap) +{ + Uint i; + for (i = 0; i < accessed_no_literal_areas; i++) { + if (accessed_literal_areas[i] == lap) + return !0; + } + return 0; +} + +void +erts_debug_save_accessed_literal_area(ErtsLiteralArea *lap) +{ + if (accessed_no_literal_areas == accessed_literal_areas_size) { + accessed_literal_areas_size += 10; + accessed_literal_areas = erts_realloc(ERTS_ALC_T_TMP, + accessed_literal_areas, + (sizeof(ErtsLiteralArea *) + *accessed_literal_areas_size)); + } + accessed_literal_areas[accessed_no_literal_areas++] = lap; +} + +static void debug_foreach_off_heap(HashTable *tbl, void (*func)(ErlOffHeap *, void *), void *arg) +{ + int i; + + for (i = 0; i < tbl->allocated; i++) { + Eterm term = tbl->term[i]; + if (is_tuple_arity(term, 2)) { + ErtsLiteralArea *lap = term_to_area(term); + ErlOffHeap oh; + if (!erts_debug_have_accessed_literal_area(lap)) { + ERTS_INIT_OFF_HEAP(&oh); + oh.first = lap->off_heap; + (*func)(&oh, arg); + erts_debug_save_accessed_literal_area(lap); + } + } + } +} + +struct debug_la_oh { + void (*func)(ErlOffHeap *, void *); + void *arg; +}; + +static void debug_handle_table(void *vfap, + ErtsThrPrgrVal val, + void *vtbl) +{ + struct debug_la_oh *fap = vfap; + HashTable *tbl = vtbl; + debug_foreach_off_heap(tbl, fap->func, fap->arg); +} + +void +erts_debug_foreach_persistent_term_off_heap(void (*func)(ErlOffHeap *, void *), void *arg) +{ + HashTable *tbl; + struct debug_la_oh fa; + accessed_no_literal_areas = 0; + accessed_literal_areas_size = 10; + accessed_literal_areas = erts_alloc(ERTS_ALC_T_TMP, + (sizeof(ErtsLiteralArea *) + * accessed_literal_areas_size)); + + tbl = (HashTable *) erts_atomic_read_nob(&the_hash_table); + debug_foreach_off_heap(tbl, func, arg); + erts_mtx_lock(&delete_queue_mtx); + for (tbl = delete_queue_head; tbl; tbl = tbl->delete_next) + debug_foreach_off_heap(tbl, func, arg); + erts_mtx_unlock(&delete_queue_mtx); + fa.func = func; + fa.arg = arg; + erts_debug_later_op_foreach(table_updater, + debug_handle_table, + (void *) &fa); + erts_debug_later_op_foreach(table_deleter, + debug_handle_table, + (void *) &fa); + erts_debug_foreach_release_literal_area_off_heap(func, arg); + + erts_free(ERTS_ALC_T_TMP, accessed_literal_areas); + accessed_no_literal_areas = 0; + accessed_literal_areas_size = 0; + accessed_literal_areas = NULL; +} + |