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Get rid of not implemented SESSION_GTIDS_TRACKER

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One less new/delete per connection.

Part of MDEV-14984 - regression in connect performance
This commit is contained in:
Sergey Vojtovich 2019-03-13 12:20:11 +04:00
parent 2be28a91b1
commit 55bdd7f7b4
2 changed files with 0 additions and 17 deletions
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16
sql/session_tracker.cc
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@ -34,20 +34,6 @@ void State_tracker::mark_as_changed(THD *thd, LEX_CSTRING *tracked_item_name)
}
class Not_implemented_tracker : public State_tracker
{
public:
bool enable(THD *thd)
{ return false; }
bool update(THD *, set_var *)
{ return false; }
bool store(THD *, String *)
{ return false; }
void mark_as_changed(THD *, LEX_CSTRING *tracked_item_name)
{}
};
/**
Session_sysvars_tracker
@ -1443,8 +1429,6 @@ void Session_tracker::enable(THD *thd)
new (std::nothrow) Current_schema_tracker;
m_trackers[SESSION_STATE_CHANGE_TRACKER]=
new (std::nothrow) Session_state_change_tracker;
m_trackers[SESSION_GTIDS_TRACKER]=
new (std::nothrow) Not_implemented_tracker;
m_trackers[TRANSACTION_INFO_TRACKER]=
new (std::nothrow) Transaction_state_tracker;

1
sql/session_tracker.h
View File

@ -32,7 +32,6 @@ enum enum_session_tracker
SESSION_SYSVARS_TRACKER, /* Session system variables */
CURRENT_SCHEMA_TRACKER, /* Current schema */
SESSION_STATE_CHANGE_TRACKER,
SESSION_GTIDS_TRACKER, /* Tracks GTIDs */
TRANSACTION_INFO_TRACKER, /* Transaction state */
SESSION_TRACKER_END /* must be the last */
};