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| author | Sergey Vojtovich <svoj@mariadb.org> | 2015-08-11 11:18:38 +0400 |
|---|---|---|
| committer | Sergey Vojtovich <svoj@mariadb.org> | 2015-08-21 10:40:39 +0400 |
| commit | 31e365efae28ba3208e80511c4d18fe11a79541a (patch) | |
| tree | f249682cc42490fc86382f5244a051001dc13c9e /sql/item_row.h | |
| parent | 4374da63f03abc472f68f42e4e93261a18bfe417 (diff) | |
| download | mariadb-git-31e365efae28ba3208e80511c4d18fe11a79541a.tar.gz | |
MDEV-8010 - Avoid sql_alloc() in Items (Patch #1)
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.
Diffstat (limited to 'sql/item_row.h')
| -rw-r--r-- | sql/item_row.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sql/item_row.h b/sql/item_row.h index c5cbf0aff8b..0de547be327 100644 --- a/sql/item_row.h +++ b/sql/item_row.h @@ -35,10 +35,11 @@ class Item_row: public Item, table_map not_null_tables_cache; bool with_null; public: - Item_row(List<Item> &list) - :Item_args(list), not_null_tables_cache(0), with_null(0) + Item_row(THD *thd, List<Item> &list): + Item(thd), Item_args(list), not_null_tables_cache(0), with_null(0) { } - Item_row(Item_row *item): + Item_row(THD *thd, Item_row *item): + Item(thd), Item_args(item), Used_tables_and_const_cache(item), not_null_tables_cache(0), @@ -95,7 +96,7 @@ public: return true; return (this->*processor)(arg); } - Item *transform(Item_transformer transformer, uchar *arg); + Item *transform(THD *thd, Item_transformer transformer, uchar *arg); bool eval_not_null_tables(uchar *opt_arg); uint cols() { return arg_count; } |