From 31e365efae28ba3208e80511c4d18fe11a79541a Mon Sep 17 00:00:00 2001 From: Sergey Vojtovich Date: Tue, 11 Aug 2015 11:18:38 +0400 Subject: 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. --- sql/item_row.cc | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'sql/item_row.cc') diff --git a/sql/item_row.cc b/sql/item_row.cc index 8b32f56973a..b1575b81087 100644 --- a/sql/item_row.cc +++ b/sql/item_row.cc @@ -146,13 +146,13 @@ void Item_row::print(String *str, enum_query_type query_type) } -Item *Item_row::transform(Item_transformer transformer, uchar *arg) +Item *Item_row::transform(THD *thd, Item_transformer transformer, uchar *arg) { - DBUG_ASSERT(!current_thd->stmt_arena->is_stmt_prepare()); + DBUG_ASSERT(!thd->stmt_arena->is_stmt_prepare()); - if (transform_args(transformer, arg)) + if (transform_args(thd, transformer, arg)) return 0; - return (this->*transformer)(arg); + return (this->*transformer)(thd, arg); } void Item_row::bring_value() -- cgit v1.2.1