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-rw-r--r--erts/emulator/beam/beam_debug.c27
-rw-r--r--erts/emulator/beam/erl_db_hash.c60
-rw-r--r--erts/emulator/test/erts_debug_SUITE.erl47
-rw-r--r--erts/emulator/test/map_SUITE.erl44
4 files changed, 143 insertions, 35 deletions
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index c756de8c8e..8a35ad17c6 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -669,7 +669,6 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
case op_new_map_dII:
case op_update_map_assoc_jsdII:
case op_update_map_exact_jsdII:
- case op_i_get_map_elements_fsI:
{
int n = unpacked[-1];
@@ -693,6 +692,32 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
}
}
break;
+ case op_i_get_map_elements_fsI:
+ {
+ int n = unpacked[-1];
+
+ while (n > 0) {
+ if (n % 3 == 1) {
+ erts_print(to, to_arg, " %X", ap[0]);
+ } else if (!is_header(ap[0])) {
+ erts_print(to, to_arg, " %T", (Eterm) ap[0]);
+ } else {
+ switch ((ap[0] >> 2) & 0x03) {
+ case R_REG_DEF:
+ erts_print(to, to_arg, " x(0)");
+ break;
+ case X_REG_DEF:
+ erts_print(to, to_arg, " x(%d)", ap[0] >> 4);
+ break;
+ case Y_REG_DEF:
+ erts_print(to, to_arg, " y(%d)", ap[0] >> 4);
+ break;
+ }
+ }
+ ap++, size++, n--;
+ }
+ }
+ break;
}
erts_print(to, to_arg, "\n");
diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c
index 81b0c4465c..98a2e2842a 100644
--- a/erts/emulator/beam/erl_db_hash.c
+++ b/erts/emulator/beam/erl_db_hash.c
@@ -148,8 +148,11 @@ static ERTS_INLINE Uint hash_to_ix(DbTableHash* tb, HashValue hval)
}
/* Remember a slot containing a pseudo-deleted item (INVALID_HASH)
-*/
-static ERTS_INLINE void add_fixed_deletion(DbTableHash* tb, int ix)
+ * Return false if we got raced by unfixing thread
+ * and the object should be deleted for real.
+ */
+static ERTS_INLINE int add_fixed_deletion(DbTableHash* tb, int ix,
+ erts_aint_t fixated_by_me)
{
erts_aint_t was_next;
erts_aint_t exp_next;
@@ -160,12 +163,18 @@ static ERTS_INLINE void add_fixed_deletion(DbTableHash* tb, int ix)
fixd->slot = ix;
was_next = erts_smp_atomic_read_acqb(&tb->fixdel);
do { /* Lockless atomic insertion in linked list: */
- exp_next = was_next;
+ if (NFIXED(tb) <= fixated_by_me) {
+ erts_db_free(ERTS_ALC_T_DB_FIX_DEL, (DbTable*)tb,
+ fixd, sizeof(FixedDeletion));
+ return 0; /* raced by unfixer */
+ }
+ exp_next = was_next;
fixd->next = (FixedDeletion*) exp_next;
- was_next = erts_smp_atomic_cmpxchg_relb(&tb->fixdel,
- (erts_aint_t) fixd,
- exp_next);
+ was_next = erts_smp_atomic_cmpxchg_mb(&tb->fixdel,
+ (erts_aint_t) fixd,
+ exp_next);
}while (was_next != exp_next);
+ return 1;
}
@@ -607,8 +616,8 @@ void db_unfix_table_hash(DbTableHash *tb)
|| (erts_smp_lc_rwmtx_is_rlocked(&tb->common.rwlock)
&& !tb->common.is_thread_safe));
restart:
- fixdel = (FixedDeletion*) erts_smp_atomic_xchg_acqb(&tb->fixdel,
- (erts_aint_t) NULL);
+ fixdel = (FixedDeletion*) erts_smp_atomic_xchg_mb(&tb->fixdel,
+ (erts_aint_t) NULL);
while (fixdel != NULL) {
FixedDeletion *fx = fixdel;
int ix = fx->slot;
@@ -1142,9 +1151,9 @@ int db_erase_hash(DbTable *tbl, Eterm key, Eterm *ret)
while(b != 0) {
if (has_live_key(tb,b,key,hval)) {
--nitems_diff;
- if (nitems_diff == -1 && IS_FIXED(tb)) {
+ if (nitems_diff == -1 && IS_FIXED(tb)
+ && add_fixed_deletion(tb, ix, 0)) {
/* Pseudo remove (no need to keep several of same key) */
- add_fixed_deletion(tb, ix);
b->hvalue = INVALID_HASH;
} else {
*bp = b->next;
@@ -1196,9 +1205,8 @@ static int db_erase_object_hash(DbTable *tbl, Eterm object, Eterm *ret)
++nkeys;
if (db_eq(&tb->common,object, &b->dbterm)) {
--nitems_diff;
- if (nkeys==1 && IS_FIXED(tb)) { /* Pseudo remove */
- add_fixed_deletion(tb,ix);
- b->hvalue = INVALID_HASH;
+ if (nkeys==1 && IS_FIXED(tb) && add_fixed_deletion(tb,ix,0)) {
+ b->hvalue = INVALID_HASH; /* Pseudo remove */
bp = &b->next;
b = b->next;
} else {
@@ -1820,14 +1828,17 @@ static int db_select_delete_hash(Process *p,
int did_erase = 0;
if (db_match_dbterm(&tb->common, p, mpi.mp, 0,
&(*current)->dbterm, NULL, 0) == am_true) {
+ HashDbTerm *del;
if (NFIXED(tb) > fixated_by_me) { /* fixated by others? */
if (slot_ix != last_pseudo_delete) {
- add_fixed_deletion(tb, slot_ix);
- last_pseudo_delete = slot_ix;
+ if (!add_fixed_deletion(tb, slot_ix, fixated_by_me))
+ goto do_erase;
+ last_pseudo_delete = slot_ix;
}
(*current)->hvalue = INVALID_HASH;
} else {
- HashDbTerm *del = *current;
+ do_erase:
+ del = *current;
*current = (*current)->next;
free_term(tb, del);
did_erase = 1;
@@ -1931,14 +1942,17 @@ static int db_select_delete_continue_hash(Process *p,
int did_erase = 0;
if (db_match_dbterm(&tb->common, p, mp, 0,
&(*current)->dbterm, NULL, 0) == am_true) {
+ HashDbTerm *del;
if (NFIXED(tb) > fixated_by_me) { /* fixated by others? */
if (slot_ix != last_pseudo_delete) {
- add_fixed_deletion(tb, slot_ix);
+ if (!add_fixed_deletion(tb, slot_ix, fixated_by_me))
+ goto do_erase;
last_pseudo_delete = slot_ix;
}
(*current)->hvalue = INVALID_HASH;
} else {
- HashDbTerm *del = *current;
+ do_erase:
+ del = *current;
*current = (*current)->next;
free_term(tb, del);
did_erase = 1;
@@ -2089,9 +2103,9 @@ static int db_take_hash(Process *p, DbTable *tbl, Eterm key, Eterm *ret)
*ret = get_term_list(p, tb, key, hval, b, &bend);
while (b != bend) {
--nitems_diff;
- if (nitems_diff == -1 && IS_FIXED(tb)) {
+ if (nitems_diff == -1 && IS_FIXED(tb)
+ && add_fixed_deletion(tb, ix, 0)) {
/* Pseudo remove (no need to keep several of same key) */
- add_fixed_deletion(tb, ix);
bp = &b->next;
b->hvalue = INVALID_HASH;
b = b->next;
@@ -2131,7 +2145,7 @@ int db_mark_all_deleted_hash(DbTable *tbl)
for (i = 0; i < NACTIVE(tb); i++) {
if ((list = BUCKET(tb,i)) != NULL) {
- add_fixed_deletion(tb, i);
+ add_fixed_deletion(tb, i, 0);
do {
list->hvalue = INVALID_HASH;
list = list->next;
@@ -2908,8 +2922,8 @@ db_finalize_dbterm_hash(int cret, DbUpdateHandle* handle)
ASSERT((&b->dbterm == handle->dbterm) == !(tb->common.compress && handle->flags & DB_MUST_RESIZE));
if (handle->flags & DB_NEW_OBJECT && cret != DB_ERROR_NONE) {
- if (IS_FIXED(tb)) {
- add_fixed_deletion(tb, hash_to_ix(tb, b->hvalue));
+ if (IS_FIXED(tb) && add_fixed_deletion(tb, hash_to_ix(tb, b->hvalue),
+ 0)) {
b->hvalue = INVALID_HASH;
} else {
*bp = b->next;
diff --git a/erts/emulator/test/erts_debug_SUITE.erl b/erts/emulator/test/erts_debug_SUITE.erl
index 3dd77eb920..35677f9953 100644
--- a/erts/emulator/test/erts_debug_SUITE.erl
+++ b/erts/emulator/test/erts_debug_SUITE.erl
@@ -139,23 +139,48 @@ flat_size_big_1(Term, Size0, Limit) when Size0 < Limit ->
flat_size_big_1(_, _, _) -> ok.
df(Config) when is_list(Config) ->
- ?line P0 = pps(),
- ?line PrivDir = ?config(priv_dir, Config),
- ?line ok = file:set_cwd(PrivDir),
- ?line erts_debug:df(?MODULE),
- ?line Beam = filename:join(PrivDir, ?MODULE_STRING++".dis"),
- ?line {ok,Bin} = file:read_file(Beam),
- ?line ok = io:put_chars(binary_to_list(Bin)),
- ?line ok = file:delete(Beam),
- ?line true = (P0 == pps()),
+ P0 = pps(),
+ PrivDir = ?config(priv_dir, Config),
+ ok = file:set_cwd(PrivDir),
+
+ AllLoaded = [M || {M,_} <- code:all_loaded()],
+ {Pid,Ref} = spawn_monitor(fun() -> df_smoke(AllLoaded) end),
+ receive
+ {'DOWN',Ref,process,Pid,Status} ->
+ normal = Status
+ after 20*1000 ->
+ %% Not finished (i.e. a slow computer). Stop now.
+ Pid ! stop,
+ receive
+ {'DOWN',Ref,process,Pid,Status} ->
+ normal = Status,
+ io:format("...")
+ end
+ end,
+ io:nl(),
+ _ = [_ = file:delete(atom_to_list(M) ++ ".dis") ||
+ M <- AllLoaded],
+
+ true = (P0 == pps()),
ok.
+df_smoke([M|Ms]) ->
+ io:format("~p", [M]),
+ erts_debug:df(M),
+ receive
+ stop ->
+ ok
+ after 0 ->
+ df_smoke(Ms)
+ end;
+df_smoke([]) -> ok.
+
pps() ->
{erlang:ports()}.
instructions(Config) when is_list(Config) ->
- ?line Is = erts_debug:instructions(),
- ?line _ = [list_to_atom(I) || I <- Is],
+ Is = erts_debug:instructions(),
+ _ = [list_to_atom(I) || I <- Is],
ok.
id(I) ->
diff --git a/erts/emulator/test/map_SUITE.erl b/erts/emulator/test/map_SUITE.erl
index 1a89101916..886ae7d516 100644
--- a/erts/emulator/test/map_SUITE.erl
+++ b/erts/emulator/test/map_SUITE.erl
@@ -2391,6 +2391,9 @@ check_keys_exist([K|Ks],M) ->
check_keys_exist(Ks,M).
t_bif_merge_and_check(Config) when is_list(Config) ->
+
+ io:format("rand:export_seed() -> ~p\n",[rand:export_seed()]),
+
%% simple disjunct ones
%% make sure all keys are unique
Kss = [[a,b,c,d],
@@ -2438,8 +2441,49 @@ t_bif_merge_and_check(Config) when is_list(Config) ->
M41 = maps:merge(M4,M1),
ok = check_key_values(KVs1 ++ [{d,5}] ++ KVs, M41),
+ [begin Ma = random_map(SzA, a),
+ Mb = random_map(SzB, b),
+ ok = merge_maps(Ma, Mb)
+ end || SzA <- [3,10,20,100,200,1000], SzB <- [3,10,20,100,200,1000]],
+
ok.
+% Generate random map with an average of Sz number of pairs: K -> {V,K}
+random_map(Sz, V) ->
+ random_map_insert(#{}, 0, V, Sz*2).
+
+random_map_insert(M0, K0, _, Sz) when K0 > Sz ->
+ M0;
+random_map_insert(M0, K0, V, Sz) ->
+ Key = K0 + rand:uniform(3),
+ random_map_insert(M0#{Key => {V,Key}}, Key, V, Sz).
+
+
+merge_maps(A, B) ->
+ AB = maps:merge(A, B),
+ %%io:format("A=~p\nB=~p\n",[A,B]),
+ maps_foreach(fun(K,VB) -> VB = maps:get(K, AB)
+ end, B),
+ maps_foreach(fun(K,VA) ->
+ case {maps:get(K, AB),maps:find(K, B)} of
+ {VA, error} -> ok;
+ {VB, {ok, VB}} -> ok
+ end
+ end, A),
+
+ maps_foreach(fun(K,V) ->
+ case {maps:find(K, A),maps:find(K, B)} of
+ {{ok, V}, error} -> ok;
+ {error, {ok, V}} -> ok;
+ {{ok,_}, {ok, V}} -> ok
+ end
+ end, AB),
+ ok.
+
+maps_foreach(Fun, Map) ->
+ maps:fold(fun(K,V,_) -> Fun(K,V) end, void, Map).
+
+
check_key_values([],_) -> ok;
check_key_values([{K,V}|KVs],M) ->
V = maps:get(K,M),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 20:37:06 +0000