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-rw-r--r--erts/emulator/beam/bif.tab1
-rw-r--r--erts/emulator/beam/erl_db.c79
-rw-r--r--erts/emulator/beam/erl_db_hash.c141
-rw-r--r--erts/emulator/beam/erl_db_tree.c58
-rw-r--r--erts/emulator/beam/erl_db_util.c10
-rw-r--r--erts/emulator/beam/erl_db_util.h20
-rw-r--r--erts/emulator/hipe/hipe_sparc_glue.S1
-rw-r--r--lib/stdlib/doc/src/ets.xml16
-rw-r--r--lib/stdlib/src/ets.erl34
-rw-r--r--lib/stdlib/test/ets_SUITE.erl56
10 files changed, 325 insertions, 91 deletions
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index 1d0d214e77..788c866e63 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -613,6 +613,7 @@ bif erlang:fun_info_mfa/1
#
bif erlang:get_keys/0
+bif ets:update_counter/4
#
# Obsolete
diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c
index 4806befd99..fff892ae54 100644
--- a/erts/emulator/beam/erl_db.c
+++ b/erts/emulator/beam/erl_db.c
@@ -805,7 +805,7 @@ BIF_RETTYPE ets_update_element_3(BIF_ALIST_3)
list = BIF_ARG_3;
}
- if (!tb->common.meth->db_lookup_dbterm(tb, BIF_ARG_2, &handle)) {
+ if (!tb->common.meth->db_lookup_dbterm(BIF_P, tb, BIF_ARG_2, THE_NON_VALUE, &handle)) {
cret = DB_ERROR_BADKEY;
goto bail_out;
}
@@ -844,7 +844,7 @@ BIF_RETTYPE ets_update_element_3(BIF_ALIST_3)
}
finalize:
- tb->common.meth->db_finalize_dbterm(&handle);
+ tb->common.meth->db_finalize_dbterm(cret, &handle);
bail_out:
UnUseTmpHeap(2,BIF_P);
@@ -863,14 +863,8 @@ bail_out:
}
}
-/*
-** update_counter(Tab, Key, Incr)
-** update_counter(Tab, Key, {Upop})
-** update_counter(Tab, Key, [{Upop}])
-** Upop = {Pos,Incr} | {Pos,Incr,Threshold,WarpTo}
-** Returns new value(s) (integer or [integer])
-*/
-BIF_RETTYPE ets_update_counter_3(BIF_ALIST_3)
+static BIF_RETTYPE
+do_update_counter(Process *p, Eterm arg1, Eterm arg2, Eterm arg3, Eterm arg4)
{
DbTable* tb;
int cret = DB_ERROR_BADITEM;
@@ -880,7 +874,7 @@ BIF_RETTYPE ets_update_counter_3(BIF_ALIST_3)
Eterm* ret_list_currp = NULL;
Eterm* ret_list_prevp = NULL;
Eterm iter;
- DeclareTmpHeap(cell,5,BIF_P);
+ DeclareTmpHeap(cell, 5, p);
Eterm *tuple = cell+2;
DbUpdateHandle handle;
Uint halloc_size = 0; /* overestimated heap usage */
@@ -888,28 +882,29 @@ BIF_RETTYPE ets_update_counter_3(BIF_ALIST_3)
Eterm* hstart;
Eterm* hend;
- if ((tb = db_get_table(BIF_P, BIF_ARG_1, DB_WRITE, LCK_WRITE_REC)) == NULL) {
- BIF_ERROR(BIF_P, BADARG);
+ if ((tb = db_get_table(p, arg1, DB_WRITE, LCK_WRITE_REC)) == NULL) {
+ BIF_ERROR(p, BADARG);
}
- UseTmpHeap(5,BIF_P);
+ UseTmpHeap(5, p);
if (!(tb->common.status & (DB_SET | DB_ORDERED_SET))) {
goto bail_out;
}
- if (is_integer(BIF_ARG_3)) { /* Incr */
- upop_list = CONS(cell, TUPLE2(tuple, make_small(tb->common.keypos+1),
- BIF_ARG_3), NIL);
+ if (is_integer(arg3)) { /* Incr */
+ upop_list = CONS(cell,
+ TUPLE2(tuple, make_small(tb->common.keypos+1), arg3),
+ NIL);
}
- else if (is_tuple(BIF_ARG_3)) { /* {Upop} */
- upop_list = CONS(cell, BIF_ARG_3, NIL);
+ else if (is_tuple(arg3)) { /* {Upop} */
+ upop_list = CONS(cell, arg3, NIL);
}
else { /* [{Upop}] (probably) */
- upop_list = BIF_ARG_3;
+ upop_list = arg3;
ret_list_prevp = &ret;
}
- if (!tb->common.meth->db_lookup_dbterm(tb, BIF_ARG_2, &handle)) {
+ if (!tb->common.meth->db_lookup_dbterm(p, tb, arg2, arg4, &handle)) {
goto bail_out; /* key not found */
}
@@ -982,13 +977,13 @@ BIF_RETTYPE ets_update_counter_3(BIF_ALIST_3)
if (ret_list_prevp) { /* Prepare to return a list */
ret = NIL;
halloc_size += list_size;
- hstart = HAlloc(BIF_P, halloc_size);
+ hstart = HAlloc(p, halloc_size);
ret_list_currp = hstart;
htop = hstart + list_size;
hend = hstart + halloc_size;
}
else {
- hstart = htop = HAlloc(BIF_P, halloc_size);
+ hstart = htop = HAlloc(p, halloc_size);
}
hend = hstart + halloc_size;
@@ -1035,26 +1030,54 @@ BIF_RETTYPE ets_update_counter_3(BIF_ALIST_3)
(is_list(ret) && (list_val(ret)+list_size)==ret_list_currp));
ASSERT(htop <= hend);
- HRelease(BIF_P,hend,htop);
+ HRelease(p, hend, htop);
finalize:
- tb->common.meth->db_finalize_dbterm(&handle);
+ tb->common.meth->db_finalize_dbterm(cret, &handle);
bail_out:
- UnUseTmpHeap(5,BIF_P);
+ UnUseTmpHeap(5, p);
db_unlock(tb, LCK_WRITE_REC);
switch (cret) {
case DB_ERROR_NONE:
BIF_RET(ret);
case DB_ERROR_SYSRES:
- BIF_ERROR(BIF_P, SYSTEM_LIMIT);
+ BIF_ERROR(p, SYSTEM_LIMIT);
default:
- BIF_ERROR(BIF_P, BADARG);
+ BIF_ERROR(p, BADARG);
break;
}
}
+/*
+** update_counter(Tab, Key, Incr)
+** update_counter(Tab, Key, Upop)
+** update_counter(Tab, Key, [{Upop}])
+** Upop = {Pos,Incr} | {Pos,Incr,Threshold,WarpTo}
+** Returns new value(s) (integer or [integer])
+*/
+BIF_RETTYPE ets_update_counter_3(BIF_ALIST_3)
+{
+ return do_update_counter(BIF_P, BIF_ARG_1, BIF_ARG_2, BIF_ARG_3, THE_NON_VALUE);
+}
+
+/*
+** update_counter(Tab, Key, Incr, Default)
+** update_counter(Tab, Key, Upop, Default)
+** update_counter(Tab, Key, [{Upop}], Default)
+** Upop = {Pos,Incr} | {Pos,Incr,Threshold,WarpTo}
+** Returns new value(s) (integer or [integer])
+*/
+BIF_RETTYPE ets_update_counter_4(BIF_ALIST_4)
+{
+ if (is_not_tuple(BIF_ARG_4)) {
+ BIF_ERROR(BIF_P, BADARG);
+ }
+ return do_update_counter(BIF_P, BIF_ARG_1, BIF_ARG_2, BIF_ARG_3, BIF_ARG_4);
+}
+
+
/*
** The put BIF
*/
diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c
index c2157457a0..8668a87ba1 100644
--- a/erts/emulator/beam/erl_db_hash.c
+++ b/erts/emulator/beam/erl_db_hash.c
@@ -444,8 +444,11 @@ static int db_delete_all_objects_hash(Process* p, DbTable* tbl);
#ifdef HARDDEBUG
static void db_check_table_hash(DbTableHash *tb);
#endif
-static int db_lookup_dbterm_hash(DbTable *tbl, Eterm key, DbUpdateHandle* handle);
-static void db_finalize_dbterm_hash(DbUpdateHandle* handle);
+static int
+db_lookup_dbterm_hash(Process *p, DbTable *tbl, Eterm key, Eterm obj,
+ DbUpdateHandle* handle);
+static void
+db_finalize_dbterm_hash(int cret, DbUpdateHandle* handle);
static ERTS_INLINE void try_shrink(DbTableHash* tb)
{
@@ -2796,59 +2799,129 @@ static HashDbTerm* next(DbTableHash *tb, Uint *iptr, erts_smp_rwmtx_t** lck_ptr,
return NULL;
}
-static int db_lookup_dbterm_hash(DbTable *tbl, Eterm key, DbUpdateHandle* handle)
+static int
+db_lookup_dbterm_hash(Process *p, DbTable *tbl, Eterm key, Eterm obj,
+ DbUpdateHandle* handle)
{
DbTableHash *tb = &tbl->hash;
- HashDbTerm* b;
- HashDbTerm** prevp;
- int ix;
HashValue hval;
+ HashDbTerm **bp, *b;
erts_smp_rwmtx_t* lck;
+ int flags = 0;
+
+ ASSERT(tb->common.status & DB_SET);
hval = MAKE_HASH(key);
- lck = WLOCK_HASH(tb,hval);
- ix = hash_to_ix(tb, hval);
- prevp = &BUCKET(tb, ix);
- b = *prevp;
+ lck = WLOCK_HASH(tb, hval);
+ bp = &BUCKET(tb, hash_to_ix(tb, hval));
+ b = *bp;
- while (b != 0) {
- if (has_live_key(tb,b,key,hval)) {
- handle->tb = tbl;
- handle->bp = (void**) prevp;
- handle->dbterm = &b->dbterm;
- handle->mustResize = 0;
- handle->new_size = b->dbterm.size;
- #if HALFWORD_HEAP
- handle->abs_vec = NULL;
- #endif
- handle->lck = lck;
- /* KEEP hval WLOCKED, db_finalize_dbterm_hash will WUNLOCK */
- return 1;
- }
- prevp = &b->next;
- b = *prevp;
+ for (;;) {
+ if (b == NULL) {
+ break;
+ }
+ if (has_key(tb, b, key, hval)) {
+ if (b->hvalue != INVALID_HASH) {
+ goto Ldone;
+ }
+ break;
+ }
+ bp = &b->next;
+ b = *bp;
}
- WUNLOCK_HASH(lck);
- return 0;
+
+ if (obj == THE_NON_VALUE) {
+ WUNLOCK_HASH(lck);
+ return 0;
+ }
+
+ {
+ Eterm *objp = tuple_val(obj);
+ int arity = arityval(*objp);
+ Eterm *htop, *hend;
+
+ ASSERT(arity >= tb->common.keypos);
+ htop = HAlloc(p, arity + 1);
+ hend = htop + arity + 1;
+ sys_memcpy(htop, objp, sizeof(Eterm) * (arity + 1));
+ htop[tb->common.keypos] = key;
+ obj = make_tuple(htop);
+
+ if (b == NULL) {
+ HashDbTerm *q = new_dbterm(tb, obj);
+
+ q->hvalue = hval;
+ q->next = NULL;
+ *bp = b = q;
+
+ {
+ int nitems = erts_smp_atomic_inc_read_nob(&tb->common.nitems);
+ int nactive = NACTIVE(tb);
+
+ if (nitems > nactive * (CHAIN_LEN + 1) && !IS_FIXED(tb)) {
+ grow(tb, nactive);
+ }
+ }
+ } else {
+ HashDbTerm *q, *next = b->next;
+
+ ASSERT(b->hvalue == INVALID_HASH);
+ q = replace_dbterm(tb, b, obj);
+ q->next = next;
+ q->hvalue = hval;
+ *bp = b = q;
+ erts_smp_atomic_inc_nob(&tb->common.nitems);
+ }
+
+ HRelease(p, hend, htop);
+ flags |= DB_NEW_OBJECT;
+ }
+
+Ldone:
+ handle->tb = tbl;
+ handle->bp = (void **)bp;
+ handle->dbterm = &b->dbterm;
+ handle->flags = flags;
+ handle->new_size = b->dbterm.size;
+#if HALFWORD_HEAP
+ handle->abs_vec = NULL;
+#endif
+ handle->lck = lck;
+ return 1;
}
/* Must be called after call to db_lookup_dbterm
*/
-static void db_finalize_dbterm_hash(DbUpdateHandle* handle)
+static void
+db_finalize_dbterm_hash(int cret, DbUpdateHandle* handle)
{
DbTable* tbl = handle->tb;
- HashDbTerm* oldp = (HashDbTerm*) *(handle->bp);
+ DbTableHash *tb = &tbl->hash;
+ HashDbTerm **bp = (HashDbTerm **) handle->bp;
+ HashDbTerm *b = *bp;
erts_smp_rwmtx_t* lck = (erts_smp_rwmtx_t*) handle->lck;
- ERTS_SMP_LC_ASSERT(IS_HASH_WLOCKED(&tbl->hash,lck)); /* locked by db_lookup_dbterm_hash */
+ ERTS_SMP_LC_ASSERT(IS_HASH_WLOCKED(tb, lck)); /* locked by db_lookup_dbterm_hash */
+
+ ASSERT((&b->dbterm == handle->dbterm) == !(tb->common.compress && handle->flags & DB_MUST_RESIZE));
- ASSERT((&oldp->dbterm == handle->dbterm) == !(tbl->common.compress && handle->mustResize));
+ if (handle->flags & DB_NEW_OBJECT && cret != DB_ERROR_NONE) {
+ if (IS_FIXED(tb)) {
+ add_fixed_deletion(tb, hash_to_ix(tb, b->hvalue));
+ b->hvalue = INVALID_HASH;
+ } else {
+ *bp = b->next;
+ free_term(tb, b);
+ }
- if (handle->mustResize) {
+ WUNLOCK_HASH(lck);
+ erts_smp_atomic_dec_nob(&tb->common.nitems);
+ try_shrink(tb);
+ } else if (handle->flags & DB_MUST_RESIZE) {
db_finalize_resize(handle, offsetof(HashDbTerm,dbterm));
WUNLOCK_HASH(lck);
- free_term(&tbl->hash, oldp);
+ free_term(tb, b);
}
else {
WUNLOCK_HASH(lck);
diff --git a/erts/emulator/beam/erl_db_tree.c b/erts/emulator/beam/erl_db_tree.c
index 720c0659c3..577da35b75 100644
--- a/erts/emulator/beam/erl_db_tree.c
+++ b/erts/emulator/beam/erl_db_tree.c
@@ -399,8 +399,11 @@ static int db_delete_all_objects_tree(Process* p, DbTable* tbl);
#ifdef HARDDEBUG
static void db_check_table_tree(DbTable *tbl);
#endif
-static int db_lookup_dbterm_tree(DbTable *, Eterm key, DbUpdateHandle*);
-static void db_finalize_dbterm_tree(DbUpdateHandle*);
+static int
+db_lookup_dbterm_tree(Process *, DbTable *, Eterm key, Eterm obj,
+ DbUpdateHandle*);
+static void
+db_finalize_dbterm_tree(int cret, DbUpdateHandle *);
/*
** Static variables
@@ -2546,16 +2549,43 @@ static TreeDbTerm **find_node2(DbTableTree *tb, Eterm key)
return this;
}
-static int db_lookup_dbterm_tree(DbTable *tbl, Eterm key, DbUpdateHandle* handle)
+static int
+db_lookup_dbterm_tree(Process *p, DbTable *tbl, Eterm key, Eterm obj,
+ DbUpdateHandle* handle)
{
DbTableTree *tb = &tbl->tree;
TreeDbTerm **pp = find_node2(tb, key);
-
- if (pp == NULL) return 0;
+ int flags = 0;
+
+ if (pp == NULL) {
+ if (obj == THE_NON_VALUE) {
+ return 0;
+ } else {
+ Eterm *objp = tuple_val(obj);
+ int arity = arityval(*objp);
+ Eterm *htop, *hend;
+
+ ASSERT(arity >= tb->common.keypos);
+ htop = HAlloc(p, arity + 1);
+ hend = htop + arity + 1;
+ sys_memcpy(htop, objp, sizeof(Eterm) * (arity + 1));
+ htop[tb->common.keypos] = key;
+ obj = make_tuple(htop);
+
+ if (db_put_tree(tbl, obj, 1) != DB_ERROR_NONE) {
+ return 0;
+ }
+
+ pp = find_node2(tb, key);
+ ASSERT(pp != NULL);
+ HRelease(p, hend, htop);
+ flags |= DB_NEW_OBJECT;
+ }
+ }
handle->tb = tbl;
handle->dbterm = &(*pp)->dbterm;
- handle->mustResize = 0;
+ handle->flags = flags;
handle->bp = (void**) pp;
handle->new_size = (*pp)->dbterm.size;
#if HALFWORD_HEAP
@@ -2564,15 +2594,21 @@ static int db_lookup_dbterm_tree(DbTable *tbl, Eterm key, DbUpdateHandle* handle
return 1;
}
-static void db_finalize_dbterm_tree(DbUpdateHandle* handle)
+static void
+db_finalize_dbterm_tree(int cret, DbUpdateHandle *handle)
{
- if (handle->mustResize) {
- TreeDbTerm* oldp = (TreeDbTerm*) *handle->bp;
+ DbTable *tbl = handle->tb;
+ DbTableTree *tb = &tbl->tree;
+ TreeDbTerm *bp = (TreeDbTerm *) *handle->bp;
+ if (handle->flags & DB_NEW_OBJECT && cret != DB_ERROR_NONE) {
+ Eterm ret;
+ db_erase_tree(tbl, GETKEY(tb, bp->dbterm.tpl), &ret);
+ } else if (handle->flags & DB_MUST_RESIZE) {
db_finalize_resize(handle, offsetof(TreeDbTerm,dbterm));
- reset_static_stack(&handle->tb->tree);
+ reset_static_stack(tb);
- free_term(&handle->tb->tree, oldp);
+ free_term(tb, bp);
}
#ifdef DEBUG
handle->dbterm = 0;
diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c
index 7eb80e3bb1..221f091396 100644
--- a/erts/emulator/beam/erl_db_util.c
+++ b/erts/emulator/beam/erl_db_util.c
@@ -2699,10 +2699,10 @@ Wterm db_do_read_element(DbUpdateHandle* handle, Sint position)
}
ASSERT(((DbTableCommon*)handle->tb)->compress);
- ASSERT(!handle->mustResize);
+ ASSERT(!(handle->flags & DB_MUST_RESIZE));
handle->dbterm = db_alloc_tmp_uncompressed(&handle->tb->common,
handle->dbterm);
- handle->mustResize = 1;
+ handle->flags |= DB_MUST_RESIZE;
return handle->dbterm->tpl[position];
}
@@ -2735,11 +2735,11 @@ void db_do_update_element(DbUpdateHandle* handle,
#endif
return;
}
- if (!handle->mustResize) {
+ if (!(handle->flags & DB_MUST_RESIZE)) {
if (handle->tb->common.compress) {
handle->dbterm = db_alloc_tmp_uncompressed(&handle->tb->common,
handle->dbterm);
- handle->mustResize = 1;
+ handle->flags |= DB_MUST_RESIZE;
oldval = handle->dbterm->tpl[position];
#if HALFWORD_HEAP
old_base = NULL;
@@ -2799,7 +2799,7 @@ both_size_set:
/* write new value in old dbterm, finalize will make a flat copy */
handle->dbterm->tpl[position] = newval;
- handle->mustResize = 1;
+ handle->flags |= DB_MUST_RESIZE;
#if HALFWORD_HEAP
if (old_base && newval_sz > 0) {
diff --git a/erts/emulator/beam/erl_db_util.h b/erts/emulator/beam/erl_db_util.h
index 5ace93c8ed..ca206c7f58 100644
--- a/erts/emulator/beam/erl_db_util.h
+++ b/erts/emulator/beam/erl_db_util.h
@@ -76,6 +76,9 @@ typedef struct db_term {
union db_table;
typedef union db_table DbTable;
+#define DB_MUST_RESIZE 1
+#define DB_NEW_OBJECT 2
+
/* Info about a database entry while it's being updated
* (by update_counter or update_element)
*/
@@ -84,7 +87,7 @@ typedef struct {
DbTerm* dbterm;
void** bp; /* {Hash|Tree}DbTerm** */
Uint new_size;
- int mustResize;
+ int flags;
void* lck;
#if HALFWORD_HEAP
unsigned char* abs_vec; /* [i] true if dbterm->tpl[i] is absolute Eterm */
@@ -183,15 +186,14 @@ typedef struct db_table_method
void *arg);
void (*db_check_table)(DbTable* tb);
- /* Lookup a dbterm for updating. Return false if not found.
- */
- int (*db_lookup_dbterm)(DbTable*, Eterm key,
- DbUpdateHandle* handle); /* [out] */
+ /* Lookup a dbterm for updating. Return false if not found. */
+ int (*db_lookup_dbterm)(Process *, DbTable *, Eterm key, Eterm obj,
+ DbUpdateHandle* handle);
- /* Must be called for each db_lookup_dbterm that returned true,
- ** even if dbterm was not updated.
- */
- void (*db_finalize_dbterm)(DbUpdateHandle* handle);
+ /* Must be called for each db_lookup_dbterm that returned true, even if
+ ** dbterm was not updated. If the handle was of a new object and cret is
+ ** not DB_ERROR_NONE, the object is removed from the table. */
+ void (*db_finalize_dbterm)(int cret, DbUpdateHandle* handle);
} DbTableMethod;
diff --git a/erts/emulator/hipe/hipe_sparc_glue.S b/erts/emulator/hipe/hipe_sparc_glue.S
index 90adad42ab..094a87fd58 100644
--- a/erts/emulator/hipe/hipe_sparc_glue.S
+++ b/erts/emulator/hipe/hipe_sparc_glue.S
@@ -316,6 +316,7 @@ nbif_fail:
.global nbif_1_gc_after_bif
.global nbif_2_gc_after_bif
.global nbif_3_gc_after_bif
+ .global nbif_4_gc_after_bif
nbif_0_gc_after_bif:
ba .gc_after_bif
mov 0, %o1 /* delay slot */
diff --git a/lib/stdlib/doc/src/ets.xml b/lib/stdlib/doc/src/ets.xml
index 902a921fbf..6b9524ef63 100644
--- a/lib/stdlib/doc/src/ets.xml
+++ b/lib/stdlib/doc/src/ets.xml
@@ -1618,14 +1618,18 @@ true</pre>
</func>
<func>
<name name="update_counter" arity="3" clause_i="1"/>
+ <name name="update_counter" arity="4" clause_i="1"/>
<name name="update_counter" arity="3" clause_i="2"/>
+ <name name="update_counter" arity="4" clause_i="2"/>
<name name="update_counter" arity="3" clause_i="3"/>
+ <name name="update_counter" arity="4" clause_i="3"/>
<type variable="Tab"/>
<type variable="Key"/>
<type variable="UpdateOp" name_i="1"/>
<type variable="Pos" name_i="1"/>
<type variable="Threshold" name_i="1"/>
<type variable="SetValue" name_i="1"/>
+ <type variable="Default"/>
<fsummary>Update a counter object in an ETS table.</fsummary>
<desc>
<p>This function provides an efficient way to update one or more
@@ -1667,12 +1671,22 @@ true</pre>
<seealso marker="#lookup/2">lookup/2</seealso> and
<seealso marker="#new/2">new/2</seealso>
for details on the difference).</p>
+ <p>If a default object <c><anno>Default</anno></c> is given, it is used
+ as the object to be updated if the key is missing from the table. The
+ value in place of the key is ignored and replaced by the proper key
+ value. The return value is as if the default object had not been used,
+ that is a single updated element or a list of them.</p>
<p>The function will fail with reason <c>badarg</c> if:</p>
<list type="bulleted">
<item>the table is not of type <c>set</c> or
<c>ordered_set</c>,</item>
- <item>no object with the right key exists,</item>
+ <item>no object with the right key exists and no default object were
+ supplied,</item>
<item>the object has the wrong arity,</item>
+ <item>the default object arity is smaller than
+ <c><![CDATA[<keypos>]]></c></item>
+ <item>any field from the default object being updated is not an
+ integer</item>
<item>the element to update is not an integer,</item>
<item>the element to update is also the key, or,</item>
<item>any of <c><anno>Pos</anno></c>, <c><anno>Incr</anno></c>, <c><anno>Threshold</anno></c> or
diff --git a/lib/stdlib/src/ets.erl b/lib/stdlib/src/ets.erl
index 26b0393b35..f58b274821 100644
--- a/lib/stdlib/src/ets.erl
+++ b/lib/stdlib/src/ets.erl
@@ -72,7 +72,7 @@
select_count/2, select_delete/2, select_reverse/1,
select_reverse/2, select_reverse/3, setopts/2, slot/2,
take/2,
- update_counter/3, update_element/3]).
+ update_counter/3, update_counter/4, update_element/3]).
-spec all() -> [Tab] when
Tab :: tab().
@@ -439,6 +439,38 @@ take(_, _) ->
update_counter(_, _, _) ->
erlang:nif_error(undef).
+-spec update_counter(Tab, Key, UpdateOp, Default) -> Result when
+ Tab :: tab(),
+ Key :: term(),
+ UpdateOp :: {Pos, Incr}
+ | {Pos, Incr, Threshold, SetValue},
+ Pos :: integer(),
+ Incr :: integer(),
+ Threshold :: integer(),
+ SetValue :: integer(),
+ Result :: integer(),
+ Default :: tuple();
+ (Tab, Key, [UpdateOp], Default) -> [Result] when
+ Tab :: tab(),
+ Key :: term(),
+ UpdateOp :: {Pos, Incr}
+ | {Pos, Incr, Threshold, SetValue},
+ Pos :: integer(),
+ Incr :: integer(),
+ Threshold :: integer(),
+ SetValue :: integer(),
+ Result :: integer(),
+ Default :: tuple();
+ (Tab, Key, Incr, Default) -> Result when
+ Tab :: tab(),
+ Key :: term(),
+ Incr :: integer(),
+ Result :: integer(),
+ Default :: tuple().
+
+update_counter(_, _, _, _) ->
+ erlang:nif_error(undef).
+
-spec update_element(Tab, Key, ElementSpec :: {Pos, Value}) -> boolean() when
Tab :: tab(),
Key :: term(),
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index 2674f6886f..cc0212ae5e 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -47,6 +47,7 @@
-export([ordered/1, ordered_match/1, interface_equality/1,
fixtable_next/1, fixtable_insert/1, rename/1, rename_unnamed/1, evil_rename/1,
update_element/1, update_counter/1, evil_update_counter/1, partly_bound/1, match_heavy/1]).
+-export([update_counter_with_default/1]).
-export([member/1]).
-export([memory/1]).
-export([select_fail/1]).
@@ -99,7 +100,7 @@
misc1_do/1, safe_fixtable_do/1, info_do/1, dups_do/1, heavy_lookup_do/1,
heavy_lookup_element_do/1, member_do/1, otp_5340_do/1, otp_7665_do/1, meta_wb_do/1,
do_heavy_concurrent/1, tab2file2_do/2, exit_large_table_owner_do/2,
- types_do/1, sleeper/0, memory_do/1,
+ types_do/1, sleeper/0, memory_do/1, update_counter_with_default_do/1,
ms_tracee_dummy/1, ms_tracee_dummy/2, ms_tracee_dummy/3, ms_tracee_dummy/4
]).
@@ -136,7 +137,8 @@ all() ->
{group, heavy}, ordered, ordered_match,
interface_equality, fixtable_next, fixtable_insert,
rename, rename_unnamed, evil_rename, update_element,
- update_counter, evil_update_counter, partly_bound,
+ update_counter, evil_update_counter,
+ update_counter_with_default, partly_bound,
match_heavy, {group, fold}, member, t_delete_object,
t_init_table, t_whitebox, t_delete_all_objects,
t_insert_list, t_test_ms, t_select_delete, t_ets_dets,
@@ -1761,6 +1763,14 @@ update_counter_do(Opts) ->
OrdSet = ets_new(ordered_set,[ordered_set | Opts]),
update_counter_for(Set),
update_counter_for(OrdSet),
+ ets:delete_all_objects(Set),
+ ets:delete_all_objects(OrdSet),
+ ets:safe_fixtable(Set, true),
+ ets:safe_fixtable(OrdSet, true),
+ update_counter_for(Set),
+ update_counter_for(OrdSet),
+ ets:safe_fixtable(Set, false),
+ ets:safe_fixtable(OrdSet, false),
ets:delete(Set),
ets:delete(OrdSet),
update_counter_neg(Opts).
@@ -1780,10 +1790,14 @@ update_counter_for(T) ->
?line {NewObj, Ret} = uc_mimic(Obj,Arg3),
ArgHash = erlang:phash2({T,a,Arg3}),
%%io:format("update_counter(~p, ~p, ~p) expecting ~p\n",[T,a,Arg3,Ret]),
+ [DefaultObj] = ets:lookup(T, a),
?line Ret = ets:update_counter(T,a,Arg3),
+ Ret = ets:update_counter(T, b, Arg3, DefaultObj), % Use other key
?line ArgHash = erlang:phash2({T,a,Arg3}),
%%io:format("NewObj=~p~n ",[NewObj]),
?line [NewObj] = ets:lookup(T,a),
+ true = ets:lookup(T, b) =:= [setelement(1, NewObj, b)],
+ ets:delete(T, b),
Myself(NewObj,Times-1,Arg3,Myself)
end,
@@ -2008,6 +2022,44 @@ evil_counter_1(Iter, T) ->
ets:update_counter(T, dracula, 1),
evil_counter_1(Iter-1, T).
+update_counter_with_default(Config) when is_list(Config) ->
+ repeat_for_opts(update_counter_with_default_do).
+
+update_counter_with_default_do(Opts) ->
+ T1 = ets_new(a, [set | Opts]),
+ %% Insert default object.
+ 3 = ets:update_counter(T1, foo, 2, {beaufort,1}),
+ %% Increment.
+ 5 = ets:update_counter(T1, foo, 2, {cabecou,1}),
+ %% Increment with list.
+ [9] = ets:update_counter(T1, foo, [{2,4}], {camembert,1}),
+ %% Same with non-immediate key.
+ 3 = ets:update_counter(T1, {foo,bar}, 2, {{chaource,chevrotin},1}),
+ 5 = ets:update_counter(T1, {foo,bar}, 2, {{cantal,comté},1}),
+ [9] = ets:update_counter(T1, {foo,bar}, [{2,4}], {{emmental,de,savoie},1}),
+ %% Same with ordered set.
+ T2 = ets_new(b, [ordered_set | Opts]),
+ 3 = ets:update_counter(T2, foo, 2, {maroilles,1}),
+ 5 = ets:update_counter(T2, foo, 2, {mimolette,1}),
+ [9] = ets:update_counter(T2, foo, [{2,4}], {morbier,1}),
+ 3 = ets:update_counter(T2, {foo,bar}, 2, {{laguiole},1}),
+ 5 = ets:update_counter(T2, {foo,bar}, 2, {{saint,nectaire},1}),
+ [9] = ets:update_counter(T2, {foo,bar}, [{2,4}], {{rocamadour},1}),
+ %% Arithmetically-equal keys.
+ 3 = ets:update_counter(T2, 1.0, 2, {1,1}),
+ 5 = ets:update_counter(T2, 1, 2, {1,1}),
+ 7 = ets:update_counter(T2, 1, 2, {1.0,1}),
+ %% Same with reversed type difference.
+ 3 = ets:update_counter(T2, 2, 2, {2.0,1}),
+ 5 = ets:update_counter(T2, 2.0, 2, {2.0,1}),
+ 7 = ets:update_counter(T2, 2.0, 2, {2,1}),
+ %% bar is not an integer.
+ {'EXIT',{badarg,_}} = (catch ets:update_counter(T1, qux, 3, {saint,félicien})),
+ %% No third element in default value.
+ {'EXIT',{badarg,_}} = (catch ets:update_counter(T1, qux, [{3,1}], {roquefort,1})),
+
+ ok.
+
fixtable_next(doc) ->
["Check that a first-next sequence always works on a fixed table"];
fixtable_next(suite) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 08:13:10 +0000