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MDEV-8010 - Avoid sql_alloc() in Items (Patch #1)

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Added mandatory thd parameter to Item (and all derivative classes) constructor.
Added thd parameter to all routines that may create items.
Also removed "current_thd" from Item::Item. This reduced number of
pthread_getspecific() calls from 290 to 177 per OLTP RO transaction.
This commit is contained in:
Sergey Vojtovich
2015-08-11 11:18:38 +04:00
parent 4374da63f0
commit 31e365efae
71 changed files with 2724 additions and 2474 deletions
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14
sql/sql_base.cc
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@ -7304,7 +7304,7 @@ mark_common_columns(THD *thd, TABLE_LIST *table_ref_1, TABLE_LIST *table_ref_2,
set_new_item_local_context(thd, item_ident_2, nj_col_2->table_ref))
goto err;
if (!(eq_cond= new Item_func_eq(item_ident_1, item_ident_2)))
if (!(eq_cond= new Item_func_eq(thd, item_ident_1, item_ident_2)))
goto err; /* Out of memory. */
if (field_1 && field_1->vcol_info)
@ -7317,8 +7317,8 @@ mark_common_columns(THD *thd, TABLE_LIST *table_ref_1, TABLE_LIST *table_ref_2,
fix_fields() is applied to all ON conditions in setup_conds()
so we don't do it here.
*/
add_join_on((table_ref_1->outer_join & JOIN_TYPE_RIGHT ?
table_ref_1 : table_ref_2),
add_join_on(thd, (table_ref_1->outer_join & JOIN_TYPE_RIGHT ?
table_ref_1 : table_ref_2),
eq_cond);
nj_col_1->is_common= nj_col_2->is_common= TRUE;
@ -7651,7 +7651,7 @@ store_top_level_join_columns(THD *thd, TABLE_LIST *table_ref,
/* Add a TRUE condition to outer joins that have no common columns. */
if (table_ref_2->outer_join &&
!table_ref_1->on_expr && !table_ref_2->on_expr)
table_ref_2->on_expr= new Item_int((longlong) 1,1); /* Always true. */
table_ref_2->on_expr= new Item_int(thd, (longlong) 1, 1); // Always true.
/* Change this table reference to become a leaf for name resolution. */
if (left_neighbor)
@ -7816,7 +7816,7 @@ int setup_wild(THD *thd, TABLE_LIST *tables, List<Item> &fields,
Item_int do not need fix_fields() because it is basic constant.
*/
it.replace(new Item_int("Not_used", (longlong) 1,
it.replace(new Item_int(thd, "Not_used", (longlong) 1,
MY_INT64_NUM_DECIMAL_DIGITS));
}
else if (insert_fields(thd, ((Item_field*) item)->context,
@ -8510,7 +8510,7 @@ void wrap_ident(THD *thd, Item **conds)
DBUG_ASSERT((*conds)->type() == Item::FIELD_ITEM || (*conds)->type() == Item::REF_ITEM);
Query_arena *arena, backup;
arena= thd->activate_stmt_arena_if_needed(&backup);
if ((wrapper= new Item_direct_ref_to_ident((Item_ident *)(*conds))))
if ((wrapper= new Item_direct_ref_to_ident(thd, (Item_ident *) (*conds))))
(*conds)= (Item*) wrapper;
if (arena)
thd->restore_active_arena(arena, &backup);
@ -9176,7 +9176,7 @@ int init_ftfuncs(THD *thd, SELECT_LEX *select_lex, bool no_order)
DBUG_PRINT("info",("Performing FULLTEXT search"));
while ((ifm=li++))
ifm->init_search(no_order);
ifm->init_search(thd, no_order);
}
return 0;
}