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-rw-r--r--erts/emulator/beam/erl_db.c7
-rw-r--r--erts/emulator/beam/erl_db.h1
-rw-r--r--erts/emulator/beam/erl_db_hash.c62
-rw-r--r--lib/stdlib/test/ets_SUITE.erl36
4 files changed, 76 insertions, 30 deletions
diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c
index a76d769283..f7ee408991 100644
--- a/erts/emulator/beam/erl_db.c
+++ b/erts/emulator/beam/erl_db.c
@@ -283,6 +283,13 @@ make_tid(Process *c_p, DbTable *tb)
return erts_mk_magic_ref(&hp, &c_p->off_heap, tb->common.btid);
}
+Eterm
+erts_db_make_tid(Process *c_p, DbTableCommon *tb)
+{
+ return make_tid(c_p, (DbTable*)tb);
+}
+
+
/*
** The meta hash table of all NAMED ets tables
diff --git a/erts/emulator/beam/erl_db.h b/erts/emulator/beam/erl_db.h
index 318e90cb28..eb6da2c9fb 100644
--- a/erts/emulator/beam/erl_db.h
+++ b/erts/emulator/beam/erl_db.h
@@ -128,6 +128,7 @@ extern erts_atomic_t erts_ets_misc_mem_size;
Eterm erts_ets_colliding_names(Process*, Eterm name, Uint cnt);
Uint erts_db_get_max_tabs(void);
+Eterm erts_db_make_tid(Process *c_p, DbTableCommon *tb);
#ifdef ERTS_ENABLE_LOCK_COUNT
void erts_lcnt_enable_db_lock_count(DbTable *tb, int enable);
diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c
index 5d49b2ea14..cb5c496e90 100644
--- a/erts/emulator/beam/erl_db_hash.c
+++ b/erts/emulator/beam/erl_db_hash.c
@@ -340,8 +340,8 @@ typedef int (*extra_match_validator_t)(int keypos, Eterm match, Eterm guard, Ete
static struct ext_segtab* alloc_ext_segtab(DbTableHash* tb, unsigned seg_ix);
static void alloc_seg(DbTableHash *tb);
static int free_seg(DbTableHash *tb, int free_records);
-static HashDbTerm* next(DbTableHash *tb, Uint *iptr, erts_rwmtx_t** lck_ptr,
- HashDbTerm *list);
+static HashDbTerm* next_live(DbTableHash *tb, Uint *iptr, erts_rwmtx_t** lck_ptr,
+ HashDbTerm *list);
static HashDbTerm* search_list(DbTableHash* tb, Eterm key,
HashValue hval, HashDbTerm *list);
static void shrink(DbTableHash* tb, int nitems);
@@ -646,9 +646,9 @@ int db_create_hash(Process *p, DbTable *tbl)
rwmtx_opt.type = ERTS_RWMTX_TYPE_FREQUENT_READ;
if (erts_ets_rwmtx_spin_count >= 0)
rwmtx_opt.main_spincount = erts_ets_rwmtx_spin_count;
- tb->locks = (DbTableHashFineLocks*) erts_db_alloc_fnf(ERTS_ALC_T_DB_SEG, /* Other type maybe? */
- (DbTable *) tb,
- sizeof(DbTableHashFineLocks));
+ tb->locks = (DbTableHashFineLocks*) erts_db_alloc(ERTS_ALC_T_DB_SEG, /* Other type maybe? */
+ (DbTable *) tb,
+ sizeof(DbTableHashFineLocks));
for (i=0; i<DB_HASH_LOCK_CNT; ++i) {
erts_rwmtx_init_opt(&tb->locks->lck_vec[i].lck, &rwmtx_opt,
"db_hash_slot", tb->common.the_name, ERTS_LOCK_FLAGS_CATEGORY_DB);
@@ -672,19 +672,9 @@ static int db_first_hash(Process *p, DbTable *tbl, Eterm *ret)
erts_rwmtx_t* lck = RLOCK_HASH(tb,ix);
HashDbTerm* list;
- for (;;) {
- list = BUCKET(tb,ix);
- if (list != NULL) {
- if (list->hvalue == INVALID_HASH) {
- list = next(tb,&ix,&lck,list);
- }
- break;
- }
- if ((ix=next_slot(tb,ix,&lck)) == 0) {
- list = NULL;
- break;
- }
- }
+ list = BUCKET(tb,ix);
+ list = next_live(tb, &ix, &lck, list);
+
if (list != NULL) {
*ret = db_copy_key(p, tbl, &list->dbterm);
RUNLOCK_HASH(lck);
@@ -721,13 +711,13 @@ static int db_next_hash(Process *p, DbTable *tbl, Eterm key, Eterm *ret)
}
/* Key found */
- b = next(tb, &ix, &lck, b);
+ b = next_live(tb, &ix, &lck, b->next);
if (tb->common.status & (DB_BAG | DB_DUPLICATE_BAG)) {
while (b != 0) {
if (!has_live_key(tb, b, key, hval)) {
break;
}
- b = next(tb, &ix, &lck, b);
+ b = next_live(tb, &ix, &lck, b->next);
}
}
if (b == NULL) {
@@ -1463,20 +1453,24 @@ static ERTS_INLINE int on_mtraversal_simple_trap(Export* trap_function,
BUMP_ALL_REDS(p);
if (IS_USMALL(0, got)) {
- hp = HAlloc(p, base_halloc_sz + 5);
+ hp = HAllocX(p, base_halloc_sz + 5, ERTS_MAGIC_REF_THING_SIZE);
egot = make_small(got);
}
else {
- hp = HAlloc(p, base_halloc_sz + BIG_UINT_HEAP_SIZE + 5);
+ hp = HAllocX(p, base_halloc_sz + BIG_UINT_HEAP_SIZE + 5,
+ ERTS_MAGIC_REF_THING_SIZE);
egot = uint_to_big(got, hp);
hp += BIG_UINT_HEAP_SIZE;
}
if (is_first_trap) {
+ if (is_atom(tid))
+ tid = erts_db_make_tid(p, &tb->common);
mpb = erts_db_make_match_prog_ref(p, *mpp, &hp);
*mpp = NULL; /* otherwise the caller will destroy it */
}
else {
+ ASSERT(!is_atom(tid));
mpb = prev_continuation_tptr[3];
}
@@ -1590,11 +1584,17 @@ static int mtraversal_select_chunk_on_loop_ended(void* context_ptr, Sint slot_ix
been in 'user space' */
}
if (rest != NIL || slot_ix >= 0) { /* Need more calls */
- sc_context_ptr->hp = HAlloc(sc_context_ptr->p, 3 + 7 + ERTS_MAGIC_REF_THING_SIZE);
+ Eterm tid = sc_context_ptr->tid;
+ sc_context_ptr->hp = HAllocX(sc_context_ptr->p,
+ 3 + 7 + ERTS_MAGIC_REF_THING_SIZE,
+ ERTS_MAGIC_REF_THING_SIZE);
mpb = erts_db_make_match_prog_ref(sc_context_ptr->p, *mpp, &sc_context_ptr->hp);
+ if (is_atom(tid))
+ tid = erts_db_make_tid(sc_context_ptr->p,
+ &sc_context_ptr->tb->common);
continuation = TUPLE6(
sc_context_ptr->hp,
- sc_context_ptr->tid,
+ tid,
make_small(slot_ix),
make_small(sc_context_ptr->chunk_size),
mpb, rest,
@@ -1631,12 +1631,16 @@ static int mtraversal_select_chunk_on_trap(void* context_ptr, Sint slot_ix, Sint
BUMP_ALL_REDS(sc_context_ptr->p);
if (sc_context_ptr->prev_continuation_tptr == NULL) {
+ Eterm tid = sc_context_ptr->tid;
/* First time we're trapping */
- hp = HAlloc(sc_context_ptr->p, 7 + ERTS_MAGIC_REF_THING_SIZE);
+ hp = HAllocX(sc_context_ptr->p, 7 + ERTS_MAGIC_REF_THING_SIZE,
+ ERTS_MAGIC_REF_THING_SIZE);
+ if (is_atom(tid))
+ tid = erts_db_make_tid(sc_context_ptr->p, &sc_context_ptr->tb->common);
mpb = erts_db_make_match_prog_ref(sc_context_ptr->p, *mpp, &hp);
continuation = TUPLE6(
hp,
- sc_context_ptr->tid,
+ tid,
make_small(slot_ix),
make_small(sc_context_ptr->chunk_size),
mpb,
@@ -2905,14 +2909,14 @@ static HashDbTerm* search_list(DbTableHash* tb, Eterm key,
/* It return the next live object in a table, NULL if no more */
/* In-bucket: RLOCKED */
/* Out-bucket: RLOCKED unless NULL */
-static HashDbTerm* next(DbTableHash *tb, Uint *iptr, erts_rwmtx_t** lck_ptr,
- HashDbTerm *list)
+static HashDbTerm* next_live(DbTableHash *tb, Uint *iptr, erts_rwmtx_t** lck_ptr,
+ HashDbTerm *list)
{
int i;
ERTS_LC_ASSERT(IS_HASH_RLOCKED(tb,*iptr));
- for (list = list->next; list != NULL; list = list->next) {
+ for ( ; list != NULL; list = list->next) {
if (list->hvalue != INVALID_HASH)
return list;
}
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index ec4a16b510..02211fa8df 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -55,6 +55,7 @@
-export([t_repair_continuation/1]).
-export([t_match_spec_run/1]).
-export([t_bucket_disappears/1]).
+-export([t_named_select/1]).
-export([otp_5340/1]).
-export([otp_6338/1]).
-export([otp_6842_select_1000/1]).
@@ -124,6 +125,7 @@ all() ->
t_init_table, t_whitebox, t_delete_all_objects,
t_insert_list, t_test_ms, t_select_delete, t_select_replace,
t_ets_dets, memory, t_select_reverse, t_bucket_disappears,
+ t_named_select,
select_fail, t_insert_new, t_repair_continuation,
otp_5340, otp_6338, otp_6842_select_1000, otp_7665,
otp_8732, meta_wb, grow_shrink, grow_pseudo_deleted,
@@ -205,6 +207,38 @@ t_bucket_disappears_do(Opts) ->
true = ets:delete(abcd),
verify_etsmem(EtsMem).
+%% OTP-21: Test that select/1 fails if named table was deleted and recreated
+%% and succeeds if table was renamed.
+t_named_select(_Config) ->
+ repeat_for_opts(fun t_named_select_do/1).
+
+t_named_select_do(Opts) ->
+ EtsMem = etsmem(),
+ T = t_name_tid_select,
+ ets_new(T, [named_table | Opts]),
+ ets:insert(T, {1,11}),
+ ets:insert(T, {2,22}),
+ ets:insert(T, {3,33}),
+ MS = [{{'$1', 22}, [], ['$1']}],
+ {[2], Cont1} = ets:select(T, MS, 1),
+ ets:delete(T),
+ {'EXIT',{badarg,_}} = (catch ets:select(Cont1)),
+ ets_new(T, [named_table | Opts]),
+ {'EXIT',{badarg,_}} = (catch ets:select(Cont1)),
+
+ true = ets:insert_new(T, {1,22}),
+ true = ets:insert_new(T, {2,22}),
+ true = ets:insert_new(T, {4,22}),
+ {[A,B], Cont2} = ets:select(T, MS, 2),
+ ets:rename(T, abcd),
+ {[C], '$end_of_table'} = ets:select(Cont2),
+ 7 = A + B + C,
+
+ true = ets:delete(abcd),
+ verify_etsmem(EtsMem).
+
+
+
%% Check ets:match_spec_run/2.
t_match_spec_run(Config) when is_list(Config) ->
@@ -700,7 +734,7 @@ whitebox_2(Opts) ->
ets:delete(T2),
ok.
-select_bound_chunk(Config) ->
+select_bound_chunk(_Config) ->
repeat_for_opts(fun select_bound_chunk_do/1, [all_types]).
select_bound_chunk_do(Opts) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 18:19:17 +0000