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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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12
sql/repl_failsafe.cc
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@ -232,16 +232,16 @@ bool show_slave_hosts(THD* thd)
Protocol *protocol= thd->protocol;
DBUG_ENTER("show_slave_hosts");
field_list.push_back(new Item_return_int("Server_id", 10,
field_list.push_back(new Item_return_int(thd, "Server_id", 10,
MYSQL_TYPE_LONG));
field_list.push_back(new Item_empty_string("Host", 20));
field_list.push_back(new Item_empty_string(thd, "Host", 20));
if (opt_show_slave_auth_info)
{
field_list.push_back(new Item_empty_string("User",20));
field_list.push_back(new Item_empty_string("Password",20));
field_list.push_back(new Item_empty_string(thd, "User", 20));
field_list.push_back(new Item_empty_string(thd, "Password", 20));
}
field_list.push_back(new Item_return_int("Port", 7, MYSQL_TYPE_LONG));
field_list.push_back(new Item_return_int("Master_id", 10,
field_list.push_back(new Item_return_int(thd, "Port", 7, MYSQL_TYPE_LONG));
field_list.push_back(new Item_return_int(thd, "Master_id", 10,
MYSQL_TYPE_LONG));
if (protocol->send_result_set_metadata(&field_list,