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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_repl.cc
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@ -3816,7 +3816,7 @@ bool mysql_show_binlog_events(THD* thd)
DBUG_ENTER("mysql_show_binlog_events");
Log_event::init_show_field_list(&field_list);
Log_event::init_show_field_list(thd, &field_list);
if (protocol->send_result_set_metadata(&field_list,
Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF))
DBUG_RETURN(TRUE);
@ -4002,11 +4002,11 @@ bool show_binlog_info(THD* thd)
Protocol *protocol= thd->protocol;
DBUG_ENTER("show_binlog_info");
List<Item> field_list;
field_list.push_back(new Item_empty_string("File", FN_REFLEN));
field_list.push_back(new Item_return_int("Position",20,
field_list.push_back(new Item_empty_string(thd, "File", FN_REFLEN));
field_list.push_back(new Item_return_int(thd, "Position", 20,
MYSQL_TYPE_LONGLONG));
field_list.push_back(new Item_empty_string("Binlog_Do_DB",255));
field_list.push_back(new Item_empty_string("Binlog_Ignore_DB",255));
field_list.push_back(new Item_empty_string(thd, "Binlog_Do_DB", 255));
field_list.push_back(new Item_empty_string(thd, "Binlog_Ignore_DB", 255));
if (protocol->send_result_set_metadata(&field_list,
Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF))
@ -4057,8 +4057,8 @@ bool show_binlogs(THD* thd)
DBUG_RETURN(TRUE);
}
field_list.push_back(new Item_empty_string("Log_name", 255));
field_list.push_back(new Item_return_int("File_size", 20,
field_list.push_back(new Item_empty_string(thd, "Log_name", 255));
field_list.push_back(new Item_return_int(thd, "File_size", 20,
MYSQL_TYPE_LONGLONG));
if (protocol->send_result_set_metadata(&field_list,
Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF))