diff options
Diffstat (limited to 'erts/emulator/beam/erl_db_hash.h')
-rw-r--r-- | erts/emulator/beam/erl_db_hash.h | 63 |
1 files changed, 30 insertions, 33 deletions
diff --git a/erts/emulator/beam/erl_db_hash.h b/erts/emulator/beam/erl_db_hash.h index 908cec11d4..7d27609825 100644 --- a/erts/emulator/beam/erl_db_hash.h +++ b/erts/emulator/beam/erl_db_hash.h @@ -1,18 +1,19 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1998-2013. All Rights Reserved. + * Copyright Ericsson AB 1998-2017. All Rights Reserved. * - * The contents of this file are subject to the Erlang Public License, - * Version 1.1, (the "License"); you may not use this file except in - * compliance with the License. You should have received a copy of the - * Erlang Public License along with this software. If not, it can be - * retrieved online at http://www.erlang.org/. - * - * Software distributed under the License is distributed on an "AS IS" - * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - * the License for the specific language governing rights and limitations - * under the License. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * * %CopyrightEnd% */ @@ -41,31 +42,29 @@ typedef struct hash_db_term { typedef struct db_table_hash_fine_locks { union { - erts_smp_rwmtx_t lck; - byte _cache_line_alignment[64]; + erts_rwmtx_t lck; + byte _cache_line_alignment[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(erts_rwmtx_t))]; }lck_vec[DB_HASH_LOCK_CNT]; } DbTableHashFineLocks; typedef struct db_table_hash { DbTableCommon common; - erts_smp_atomic_t segtab; /* The segment table (struct segment**) */ - erts_smp_atomic_t szm; /* current size mask. */ - + /* SMP: szm and nactive are write-protected by is_resizing or table write lock */ + erts_atomic_t szm; /* current size mask. */ + erts_atomic_t nactive; /* Number of "active" slots */ + + erts_atomic_t segtab; /* The segment table (struct segment**) */ + struct segment* first_segtab[1]; + /* SMP: nslots and nsegs are protected by is_resizing or table write lock */ int nslots; /* Total number of slots */ int nsegs; /* Size of segment table */ /* List of slots where elements have been deleted while table was fixed */ - erts_smp_atomic_t fixdel; /* (FixedDeletion*) */ - erts_smp_atomic_t nactive; /* Number of "active" slots */ - erts_smp_atomic_t is_resizing; /* grow/shrink in progress */ -#ifdef ERTS_SMP + erts_atomic_t fixdel; /* (FixedDeletion*) */ + erts_atomic_t is_resizing; /* grow/shrink in progress */ DbTableHashFineLocks* locks; -#endif -#ifdef VALGRIND - struct ext_segment* top_ptr_to_segment_with_active_segtab; -#endif } DbTableHash; @@ -74,7 +73,7 @@ typedef struct db_table_hash { ** table types. The process is always an [in out] parameter. */ void db_initialize_hash(void); -void db_unfix_table_hash(DbTableHash *tb /* [in out] */); +SWord db_unfix_table_hash(DbTableHash *tb); Uint db_kept_items_hash(DbTableHash *tb); /* Interface for meta pid table */ @@ -87,14 +86,6 @@ int db_get_hash(Process *p, DbTable *tbl, Eterm key, Eterm *ret); int db_erase_hash(DbTable *tbl, Eterm key, Eterm *ret); -int db_get_element_array(DbTable *tbl, - Eterm key, - int ndex, - Eterm *ret, - int *num_ret); - -int db_erase_bag_exact2(DbTable *tbl, Eterm key, Eterm value); - /* not yet in method table */ int db_mark_all_deleted_hash(DbTable *tbl); @@ -104,8 +95,14 @@ typedef struct { float std_dev_expected; int max_chain_len; int min_chain_len; + int kept_items; }DbHashStats; void db_calc_stats_hash(DbTableHash* tb, DbHashStats*); +Eterm erts_ets_hash_sizeof_ext_segtab(void); + +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_enable_db_hash_lock_count(DbTableHash *tb, int enable); +#endif #endif /* _DB_HASH_H */ |