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Diffstat (limited to 'erts/emulator/beam/erl_db_hash.c')
-rw-r--r--erts/emulator/beam/erl_db_hash.c60
1 files changed, 45 insertions, 15 deletions
diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c
index 8cabf04fb1..a8d7ab2e6c 100644
--- a/erts/emulator/beam/erl_db_hash.c
+++ b/erts/emulator/beam/erl_db_hash.c
@@ -286,6 +286,16 @@ static ERTS_INLINE void free_term(DbTableHash *tb, HashDbTerm* p)
db_free_term((DbTable*)tb, p, offsetof(HashDbTerm, dbterm));
}
+static ERTS_INLINE void free_term_list(DbTableHash *tb, HashDbTerm* p)
+{
+ while (p) {
+ HashDbTerm* next = p->next;
+ free_term(tb, p);
+ p = next;
+ }
+}
+
+
/*
* Local types
*/
@@ -587,6 +597,7 @@ restart:
int ix = fx->slot;
HashDbTerm **bp;
HashDbTerm *b;
+ HashDbTerm *free_us = NULL;
erts_rwmtx_t* lck = WLOCK_HASH(tb,ix);
if (IS_FIXED(tb)) { /* interrupted by fixer */
@@ -603,10 +614,11 @@ restart:
while (b != NULL) {
if (is_pseudo_deleted(b)) {
- *bp = b->next;
- free_term(tb, b);
+ HashDbTerm* nxt = b->next;
+ b->next = free_us;
+ free_us = b;
work++;
- b = *bp;
+ b = *bp = nxt;
} else {
bp = &b->next;
b = b->next;
@@ -615,6 +627,7 @@ restart:
}
/* else slot has been joined and purged by shrink() */
WUNLOCK_HASH(lck);
+ free_term_list(tb, free_us);
fixdel = fx->next;
erts_db_free(ERTS_ALC_T_DB_FIX_DEL,
(DbTable *) tb,
@@ -988,6 +1001,7 @@ int db_erase_hash(DbTable *tbl, Eterm key, Eterm *ret)
int ix;
HashDbTerm** bp;
HashDbTerm* b;
+ HashDbTerm* free_us = NULL;
erts_rwmtx_t* lck;
int nitems_diff = 0;
@@ -1005,9 +1019,10 @@ int db_erase_hash(DbTable *tbl, Eterm key, Eterm *ret)
/* Pseudo remove (no need to keep several of same key) */
b->pseudo_deleted = 1;
} else {
- *bp = b->next;
- free_term(tb, b);
- b = *bp;
+ HashDbTerm* next = b->next;
+ b->next = free_us;
+ free_us = b;
+ b = *bp = next;
continue;
}
}
@@ -1023,6 +1038,7 @@ int db_erase_hash(DbTable *tbl, Eterm key, Eterm *ret)
erts_atomic_add_nob(&tb->common.nitems, nitems_diff);
try_shrink(tb);
}
+ free_term_list(tb, free_us);
*ret = am_true;
return DB_ERROR_NONE;
}
@@ -1037,6 +1053,7 @@ static int db_erase_object_hash(DbTable *tbl, Eterm object, Eterm *ret)
int ix;
HashDbTerm** bp;
HashDbTerm* b;
+ HashDbTerm* free_us = NULL;
erts_rwmtx_t* lck;
int nitems_diff = 0;
int nkeys = 0;
@@ -1059,9 +1076,10 @@ static int db_erase_object_hash(DbTable *tbl, Eterm object, Eterm *ret)
bp = &b->next;
b = b->next;
} else {
- *bp = b->next;
- free_term(tb, b);
- b = *bp;
+ HashDbTerm* next = b->next;
+ b->next = free_us;
+ free_us = b;
+ b = *bp = next;
}
if (tb->common.status & (DB_DUPLICATE_BAG)) {
continue;
@@ -1081,6 +1099,7 @@ static int db_erase_object_hash(DbTable *tbl, Eterm object, Eterm *ret)
erts_atomic_add_nob(&tb->common.nitems, nitems_diff);
try_shrink(tb);
}
+ free_term_list(tb, free_us);
*ret = am_true;
return DB_ERROR_NONE;
}
@@ -1950,6 +1969,7 @@ typedef struct {
Eterm* prev_continuation_tptr;
erts_aint_t fixated_by_me;
Uint last_pseudo_delete;
+ HashDbTerm* free_us;
} mtraversal_select_delete_context_t;
static int mtraversal_select_delete_on_nothing_can_match(void* context_ptr, Eterm* ret) {
@@ -1979,7 +1999,8 @@ static int mtraversal_select_delete_on_match_res(void* context_ptr, Sint slot_ix
do_erase:
del = *current_ptr;
*current_ptr = (*current_ptr)->next; // replace pointer to term using next
- free_term(sd_context_ptr->tb, del);
+ del->next = sd_context_ptr->free_us;
+ sd_context_ptr->free_us = del;
}
erts_atomic_dec_nob(&sd_context_ptr->tb->common.nitems);
@@ -1990,6 +2011,8 @@ static int mtraversal_select_delete_on_loop_ended(void* context_ptr, Sint slot_i
Sint iterations_left, Binary** mpp, Eterm* ret)
{
mtraversal_select_delete_context_t* sd_context_ptr = (mtraversal_select_delete_context_t*) context_ptr;
+ free_term_list(sd_context_ptr->tb, sd_context_ptr->free_us);
+ sd_context_ptr->free_us = NULL;
ASSERT(iterations_left <= MAX_SELECT_DELETE_ITERATIONS);
BUMP_REDS(sd_context_ptr->p, MAX_SELECT_DELETE_ITERATIONS - iterations_left);
if (got) {
@@ -2003,6 +2026,8 @@ static int mtraversal_select_delete_on_trap(void* context_ptr, Sint slot_ix, Sin
Binary** mpp, Eterm* ret)
{
mtraversal_select_delete_context_t* sd_context_ptr = (mtraversal_select_delete_context_t*) context_ptr;
+ free_term_list(sd_context_ptr->tb, sd_context_ptr->free_us);
+ sd_context_ptr->free_us = NULL;
return on_mtraversal_simple_trap(
&ets_select_delete_continue_exp,
sd_context_ptr->p,
@@ -2013,7 +2038,7 @@ static int mtraversal_select_delete_on_trap(void* context_ptr, Sint slot_ix, Sin
}
static int db_select_delete_hash(Process *p, DbTable *tbl, Eterm tid, Eterm pattern, Eterm *ret) {
- mtraversal_select_delete_context_t sd_context = {0};
+ mtraversal_select_delete_context_t sd_context;
Sint chunk_size = 0;
sd_context.p = p;
@@ -2023,6 +2048,7 @@ static int db_select_delete_hash(Process *p, DbTable *tbl, Eterm tid, Eterm patt
sd_context.prev_continuation_tptr = NULL;
sd_context.fixated_by_me = sd_context.tb->common.is_thread_safe ? 0 : 1; /* TODO: something nicer */
sd_context.last_pseudo_delete = (Uint) -1;
+ sd_context.free_us = NULL;
return match_traverse(
sd_context.p, sd_context.tb,
@@ -2040,7 +2066,7 @@ static int db_select_delete_hash(Process *p, DbTable *tbl, Eterm tid, Eterm patt
* This is called when select_delete traps
*/
static int db_select_delete_continue_hash(Process* p, DbTable* tbl, Eterm continuation, Eterm* ret) {
- mtraversal_select_delete_context_t sd_context = {0};
+ mtraversal_select_delete_context_t sd_context;
Eterm* tptr;
Eterm tid;
Binary* mp;
@@ -2060,6 +2086,7 @@ static int db_select_delete_continue_hash(Process* p, DbTable* tbl, Eterm contin
sd_context.prev_continuation_tptr = tptr;
sd_context.fixated_by_me = ONLY_WRITER(p, sd_context.tb) ? 0 : 1; /* TODO: something nicer */
sd_context.last_pseudo_delete = (Uint) -1;
+ sd_context.free_us = NULL;
return match_traverse_continue(
sd_context.p, sd_context.tb, chunk_size,
@@ -2220,6 +2247,7 @@ static int db_take_hash(Process *p, DbTable *tbl, Eterm key, Eterm *ret)
{
DbTableHash *tb = &tbl->hash;
HashDbTerm **bp, *b;
+ HashDbTerm *free_us = NULL;
HashValue hval = MAKE_HASH(key);
erts_rwmtx_t *lck = WLOCK_HASH(tb, hval);
int ix = hash_to_ix(tb, hval);
@@ -2240,9 +2268,10 @@ static int db_take_hash(Process *p, DbTable *tbl, Eterm key, Eterm *ret)
b->pseudo_deleted = 1;
b = b->next;
} else {
- *bp = b->next;
- free_term(tb, b);
- b = *bp;
+ HashDbTerm* next = b->next;
+ b->next = free_us;
+ free_us = b;
+ b = *bp = next;
}
}
break;
@@ -2253,6 +2282,7 @@ static int db_take_hash(Process *p, DbTable *tbl, Eterm key, Eterm *ret)
erts_atomic_add_nob(&tb->common.nitems, nitems_diff);
try_shrink(tb);
}
+ free_term_list(tb, free_us);
return DB_ERROR_NONE;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 18:21:39 +0000