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Diffstat (limited to 'erts/emulator/beam/erl_db.c')
-rw-r--r--erts/emulator/beam/erl_db.c53
1 files changed, 35 insertions, 18 deletions
diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c
index 3a29f8cf56..5bae1730e4 100644
--- a/erts/emulator/beam/erl_db.c
+++ b/erts/emulator/beam/erl_db.c
@@ -322,10 +322,10 @@ erts_db_make_tid(Process *c_p, DbTableCommon *tb)
/*
** The meta hash table of all NAMED ets tables
*/
-# define META_NAME_TAB_LOCK_CNT 16
+# define META_NAME_TAB_LOCK_CNT 256
union {
erts_rwmtx_t lck;
- byte _cache_line_alignment[64];
+ byte align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(erts_rwmtx_t))];
}meta_name_tab_rwlocks[META_NAME_TAB_LOCK_CNT];
static struct meta_name_tab_entry {
union {
@@ -450,7 +450,7 @@ save_sched_table(Process *c_p, DbTable *tb)
DbTable *first;
ASSERT(esdp);
- esdp->ets_tables.count++;
+ erts_atomic_inc_nob(&esdp->ets_tables.count);
erts_refc_inc(&tb->common.refc, 1);
first = esdp->ets_tables.clist;
@@ -474,8 +474,8 @@ remove_sched_table(ErtsSchedulerData *esdp, DbTable *tb)
ASSERT(erts_get_ref_numbers_thr_id(ERTS_MAGIC_BIN_REFN(tb->common.btid))
== (Uint32) esdp->no);
- ASSERT(esdp->ets_tables.count > 0);
- esdp->ets_tables.count--;
+ ASSERT(erts_atomic_read_nob(&esdp->ets_tables.count) > 0);
+ erts_atomic_dec_nob(&esdp->ets_tables.count);
eaydp = ERTS_SCHED_AUX_YIELD_DATA(esdp, ets_all);
if (eaydp->ongoing) {
@@ -1776,9 +1776,11 @@ BIF_RETTYPE ets_new_2(BIF_ALIST_2)
ret = make_tid(BIF_P, tb);
save_sched_table(BIF_P, tb);
+ save_owned_table(BIF_P, tb);
if (is_named && !insert_named_tab(BIF_ARG_1, tb, 0)) {
tid_clear(BIF_P, tb);
+ delete_owned_table(BIF_P, tb);
db_lock(tb,LCK_WRITE);
free_heir_data(tb);
@@ -1789,7 +1791,6 @@ BIF_RETTYPE ets_new_2(BIF_ALIST_2)
}
BIF_P->flags |= F_USING_DB; /* So we can remove tb if p dies */
- save_owned_table(BIF_P, tb);
#ifdef HARDDEBUG
erts_fprintf(stderr,
@@ -2445,7 +2446,7 @@ ets_all_reply(ErtsSchedulerData *esdp, ErtsEtsAllReq **reqpp,
ASSERT(!*tablepp);
/* Max heap size needed... */
- sz = esdp->ets_tables.count;
+ sz = erts_atomic_read_nob(&esdp->ets_tables.count);
sz *= ERTS_MAGIC_REF_THING_SIZE + 2;
sz += 3 + ERTS_REF_THING_SIZE;
hfragp = new_message_buffer(sz);
@@ -2529,7 +2530,8 @@ erts_handle_yielded_ets_all_request(ErtsSchedulerData *esdp,
if (!eaydp->queue)
return 0; /* All work completed! */
- if (yc < ERTS_ETS_ALL_TB_YCNT_START && yc > esdp->ets_tables.count)
+ if (yc < ERTS_ETS_ALL_TB_YCNT_START &&
+ yc > erts_atomic_read_nob(&esdp->ets_tables.count))
return 1; /* Yield! */
eaydp->ongoing = ongoing = eaydp->queue;
@@ -2608,7 +2610,6 @@ BIF_RETTYPE ets_internal_request_all_0(BIF_ALIST_0)
BIF_RET(ref);
}
-
/*
** db_slot(Db, Slot) -> [Items].
*/
@@ -3490,7 +3491,11 @@ void init_db(ErtsDbSpinCount db_spin_count)
db_max_tabs, ((Uint)1)<<SMALL_BITS);
}
- meta_name_tab_mask = (((Uint) 1)<<(bits-1)) - 1; /* At least half the size of main tab */
+ /*
+ * We don't have ony hard limit for number of tables anymore, .
+ * but we use 'db_max_tabs' to determine size of name hash table.
+ */
+ meta_name_tab_mask = (((Uint) 1)<<bits) - 1;
size = sizeof(struct meta_name_tab_entry)*(meta_name_tab_mask+1);
meta_name_tab = erts_db_alloc_nt(ERTS_ALC_T_DB_TABLES, size);
ERTS_ETS_MISC_MEM_ADD(size);
@@ -3505,27 +3510,27 @@ void init_db(ErtsDbSpinCount db_spin_count)
/* Non visual BIF to trap to. */
erts_init_trap_export(&ets_select_delete_continue_exp,
- am_ets, am_atom_put("delete_trap",11), 1,
+ am_ets, ERTS_MAKE_AM("select_delete_trap"), 1,
&ets_select_delete_trap_1);
/* Non visual BIF to trap to. */
erts_init_trap_export(&ets_select_count_continue_exp,
- am_ets, am_atom_put("count_trap",11), 1,
+ am_ets, ERTS_MAKE_AM("count_trap"), 1,
&ets_select_count_1);
/* Non visual BIF to trap to. */
erts_init_trap_export(&ets_select_replace_continue_exp,
- am_ets, am_atom_put("replace_trap",11), 1,
+ am_ets, ERTS_MAKE_AM("replace_trap"), 1,
&ets_select_replace_1);
/* Non visual BIF to trap to. */
erts_init_trap_export(&ets_select_continue_exp,
- am_ets, am_atom_put("select_trap",11), 1,
+ am_ets, ERTS_MAKE_AM("select_trap"), 1,
&ets_select_trap_1);
/* Non visual BIF to trap to. */
erts_init_trap_export(&ets_delete_continue_exp,
- am_ets, am_atom_put("delete_trap",11), 1,
+ am_ets, ERTS_MAKE_AM("delete_trap"), 1,
&ets_delete_trap);
}
@@ -3538,7 +3543,7 @@ erts_ets_sched_spec_data_init(ErtsSchedulerData *esdp)
eaydp->tab = NULL;
eaydp->queue = NULL;
esdp->ets_tables.clist = NULL;
- esdp->ets_tables.count = 0;
+ erts_atomic_init_nob(&esdp->ets_tables.count, 0);
}
@@ -4154,7 +4159,7 @@ static Eterm table_info(Process* p, DbTable* tb, Eterm What)
else if (What == am_data) {
print_table(ERTS_PRINT_STDOUT, NULL, 1, tb);
ret = am_true;
- } else if (What == am_atom_put("fixed",5)) {
+ } else if (ERTS_IS_ATOM_STR("fixed",What)) {
if (IS_FIXED(tb))
ret = am_true;
else
@@ -4206,7 +4211,7 @@ static Eterm table_info(Process* p, DbTable* tb, Eterm What)
ret = am_false;
}
erts_mtx_unlock(&tb->common.fixlock);
- } else if (What == am_atom_put("stats",5)) {
+ } else if (ERTS_IS_ATOM_STR("stats",What)) {
if (IS_HASH_TABLE(tb->common.status)) {
FloatDef f;
DbHashStats stats;
@@ -4346,6 +4351,18 @@ erts_db_get_max_tabs()
return db_max_tabs;
}
+Uint erts_ets_table_count(void)
+{
+ Uint tb_count = 0;
+ Uint six;
+
+ for (six = 0; six < erts_no_schedulers; six++) {
+ ErtsSchedulerData *esdp = &erts_aligned_scheduler_data[six].esd;
+ tb_count += erts_atomic_read_nob(&esdp->ets_tables.count);
+ }
+ return tb_count;
+}
+
/*
* For testing of meta tables only.
*
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 00:06:07 +0000