Remove unused code.

1 files changed, 0 insertions, 70 deletions

diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index 1a17c8e39d5..403ba853222 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -9100,76 +9100,6 @@ my_bool mysql_rm_tmp_tables(void)
 	unireg support functions
 *****************************************************************************/
 
-/**
-   A callback to the server internals that is used to address
-   special cases of the locking protocol.
-   Invoked when acquiring an exclusive lock, for each thread that
-   has a conflicting shared metadata lock.
-
-   This function:
-     - aborts waiting of the thread on a data lock, to make it notice
-       the pending exclusive lock and back off.
-     - if the thread is an INSERT DELAYED thread, sends it a KILL
-       signal to terminate it.
-
-   @note This function does not wait for the thread to give away its
-         locks. Waiting is done outside for all threads at once.
-
-   @param thd    Current thread context
-   @param in_use The thread to wake up
-   @param needs_thr_lock_abort Indicates that to wake up thread
-                               this call needs to abort its waiting
-                               on table-level lock.
-
-   @retval  TRUE  if the thread was woken up
-   @retval  FALSE otherwise.
-
-   @note It is one of two places where border between MDL and the
-         rest of the server is broken.
-*/
-
-bool mysql_notify_thread_having_shared_lock(THD *thd, THD *in_use,
-                                            bool needs_thr_lock_abort)
-{
-  bool signalled= FALSE;
-  if ((in_use->system_thread & SYSTEM_THREAD_DELAYED_INSERT) &&
-      !in_use->killed)
-  {
-    in_use->killed= KILL_SYSTEM_THREAD;
-    mysql_mutex_lock(&in_use->mysys_var->mutex);
-    if (in_use->mysys_var->current_cond)
-    {
-      mysql_mutex_lock(in_use->mysys_var->current_mutex);
-      mysql_cond_broadcast(in_use->mysys_var->current_cond);
-      mysql_mutex_unlock(in_use->mysys_var->current_mutex);
-    }
-    mysql_mutex_unlock(&in_use->mysys_var->mutex);
-    signalled= TRUE;
-  }
-
-  if (needs_thr_lock_abort)
-  {
-    mysql_mutex_lock(&in_use->LOCK_thd_data);
-    for (TABLE *thd_table= in_use->open_tables;
-         thd_table ;
-         thd_table= thd_table->next)
-    {
-      /*
-        Check for TABLE::needs_reopen() is needed since in some places we call
-        handler::close() for table instance (and set TABLE::db_stat to 0)
-        and do not remove such instances from the THD::open_tables
-        for some time, during which other thread can see those instances
-        (e.g. see partitioning code).
-      */
-      if (!thd_table->needs_reopen())
-        signalled|= mysql_lock_abort_for_thread(thd, thd_table);
-    }
-    mysql_mutex_unlock(&in_use->LOCK_thd_data);
-  }
-  return signalled;
-}
-
-
 int setup_ftfuncs(SELECT_LEX *select_lex)
 {
   List_iterator<Item_func_match> li(*(select_lex->ftfunc_list)),