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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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8
plugin/handler_socket/handlersocket/database.cpp
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@ -106,10 +106,10 @@ struct tablevec_entry {
struct expr_user_lock : private noncopyable {
expr_user_lock(THD *thd, int timeout)
: lck_key("handlersocket_wr", 16, &my_charset_latin1),
lck_timeout(timeout),
lck_func_get_lock(&lck_key, &lck_timeout),
lck_func_release_lock(&lck_key)
: lck_key(thd, "handlersocket_wr", 16, &my_charset_latin1),
lck_timeout(thd, timeout),
lck_func_get_lock(thd, &lck_key, &lck_timeout),
lck_func_release_lock(thd, &lck_key)
{
lck_key.fix_fields(thd, 0);
lck_timeout.fix_fields(thd, 0);