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MDEV-7943 - pthread_getspecific() takes 0.76% in OLTP RO

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Added THD argument to select_result and all derivative classes.
This reduces number of pthread_getspecific calls from 796 to 776 per OLTP RO
transaction.
This commit is contained in:
Sergey Vojtovich
2015-04-22 13:29:56 +04:00
parent 8345bc6921
commit b22959903b
18 changed files with 149 additions and 127 deletions
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6
sql/sql_cursor.cc
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@@ -71,8 +71,8 @@ class Select_materialize: public select_union
select_result *result; /**< the result object of the caller (PS or SP) */
public:
Materialized_cursor *materialized_cursor;
Select_materialize(select_result *result_arg)
:result(result_arg), materialized_cursor(0) {}
Select_materialize(THD *thd_arg, select_result *result_arg):
select_union(thd_arg), result(result_arg), materialized_cursor(0) {}
virtual bool send_result_set_metadata(List<Item> &list, uint flags);
};
@@ -104,7 +104,7 @@ int mysql_open_cursor(THD *thd, select_result *result,
LEX *lex= thd->lex;
int rc;
if (! (result_materialize= new (thd->mem_root) Select_materialize(result)))
if (!(result_materialize= new (thd->mem_root) Select_materialize(thd, result)))
return 1;
save_result= lex->result;