Removed kill_delayed_threads_for_table()

After 7fb9d64 it is used only by ALTER/DROP SERVER, which most probably
wasn't intentional as Federated never supported delayed inserts anyway.

If delayed inserts will ever become an issue with ALTER/DROP SERVER, we
should kill them by acquiring X-lock instead.

Part of MDEV-17882 - Cleanup refresh version

12 files changed, 26 insertions, 79 deletions

diff --git a/sql/rpl_gtid.cc b/sql/rpl_gtid.cc
index a159434f14b..599129b98f4 100644
--- a/sql/rpl_gtid.cc
+++ b/sql/rpl_gtid.cc
@@ -425,7 +425,7 @@ rpl_slave_state::truncate_state_table(THD *thd)
   if (!(err= open_and_lock_tables(thd, &tlist, FALSE, 0)))
   {
     tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED, "mysql",
-                     rpl_gtid_slave_state_table_name.str, false);
+                     rpl_gtid_slave_state_table_name.str);
     err= tlist.table->file->ha_truncate();
 
     if (err)
diff --git a/sql/sql_admin.cc b/sql/sql_admin.cc
index 3b15c5a505e..3d1f4c3b505 100644
--- a/sql/sql_admin.cc
+++ b/sql/sql_admin.cc
@@ -1158,7 +1158,7 @@ send_result_message:
       else if (open_for_modify || fatal_error)
       {
         tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
-                         table->db.str, table->table_name.str, FALSE);
+                         table->db.str, table->table_name.str);
         /*
           May be something modified. Consequently, we have to
           invalidate the query cache.
diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index 4b0fe1eb5d1..48cc72b312b 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -450,7 +450,7 @@ bool close_cached_tables(THD *thd, TABLE_LIST *tables,
 
     for (TABLE_LIST *table= tables; table; table= table->next_local)
       tdc_remove_table(thd, TDC_RT_REMOVE_ALL, table->db.str,
-                       table->table_name.str, false);
+                       table->table_name.str);
   }
   DBUG_RETURN(false);
 }
@@ -717,7 +717,7 @@ bool close_cached_connection_tables(THD *thd, LEX_CSTRING *connection)
   for (TABLE_LIST *table= argument.tables; table; table= table->next_local)
     res|= tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
                            table->db.str,
-                           table->table_name.str, TRUE);
+                           table->table_name.str);
 
   /* Return true if we found any open connections */
   DBUG_RETURN(res);
@@ -846,12 +846,9 @@ close_all_tables_for_name(THD *thd, TABLE_SHARE *share,
       prev= &table->next;
     }
   }
+  /* Remove the table share from the cache. */
   if (skip_table == NULL)
-  {
-    /* Remove the table share from the cache. */
-    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db, table_name,
-                     FALSE);
-  }
+    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db, table_name);
 }
 
 
@@ -1414,8 +1411,7 @@ bool wait_while_table_is_used(THD *thd, TABLE *table,
     DBUG_RETURN(TRUE);
 
   tdc_remove_table(thd, TDC_RT_REMOVE_NOT_OWN,
-                   table->s->db.str, table->s->table_name.str,
-                   FALSE);
+                   table->s->db.str, table->s->table_name.str);
   /* extra() call must come only after all instances above are closed */
   if (function != HA_EXTRA_NOT_USED)
     (void) table->file->extra(function);
@@ -1456,8 +1452,7 @@ void drop_open_table(THD *thd, TABLE *table, const LEX_CSTRING *db_name,
     table->file->extra(HA_EXTRA_PREPARE_FOR_DROP);
     close_thread_table(thd, &thd->open_tables);
     /* Remove the table share from the table cache. */
-    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db_name->str, table_name->str,
-                     FALSE);
+    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db_name->str, table_name->str);
     /* Remove the table from the storage engine and rm the .frm. */
     quick_rm_table(thd, table_type, db_name, table_name, 0);
  }
@@ -3046,8 +3041,7 @@ static bool auto_repair_table(THD *thd, TABLE_LIST *table_list)
   tdc_release_share(share);
   /* Remove the repaired share from the table cache. */
   tdc_remove_table(thd, TDC_RT_REMOVE_ALL,
-                   table_list->db.str, table_list->table_name.str,
-                   FALSE);
+                   table_list->db.str, table_list->table_name.str);
 end_free:
   my_free(entry);
   return result;
@@ -3219,7 +3213,7 @@ Open_table_context::recover_from_failed_open()
           break;
 
         tdc_remove_table(m_thd, TDC_RT_REMOVE_ALL, m_failed_table->db.str,
-                         m_failed_table->table_name.str, FALSE);
+                         m_failed_table->table_name.str);
 
         m_thd->get_stmt_da()->clear_warning_info(m_thd->query_id);
         m_thd->clear_error();                 // Clear error message
@@ -3255,7 +3249,7 @@ Open_table_context::recover_from_failed_open()
           break;
 
         tdc_remove_table(m_thd, TDC_RT_REMOVE_ALL, m_failed_table->db.str,
-                         m_failed_table->table_name.str, FALSE);
+                         m_failed_table->table_name.str);
 
         result= auto_repair_table(m_thd, m_failed_table);
         /*
diff --git a/sql/sql_db.cc b/sql/sql_db.cc
index 62fbd4b8880..f070ff1222f 100644
--- a/sql/sql_db.cc
+++ b/sql/sql_db.cc
@@ -31,7 +31,7 @@
 #include "sql_acl.h"                     // SELECT_ACL, DB_ACLS,
                                          // acl_get, check_grant_db
 #include "log_event.h"                   // Query_log_event
-#include "sql_base.h"                    // lock_table_names, tdc_remove_table
+#include "sql_base.h"                    // lock_table_names
 #include "sql_handler.h"                 // mysql_ha_rm_tables
 #include "sql_class.h"
 #include <mysys_err.h>
diff --git a/sql/sql_partition_admin.cc b/sql/sql_partition_admin.cc
index 54484846609..edd2116833c 100644
--- a/sql/sql_partition_admin.cc
+++ b/sql/sql_partition_admin.cc
@@ -826,7 +826,7 @@ bool Sql_cmd_alter_table_truncate_partition::execute(THD *thd)
     DBUG_RETURN(TRUE);
 
   tdc_remove_table(thd, TDC_RT_REMOVE_NOT_OWN, first_table->db.str,
-                   first_table->table_name.str, FALSE);
+                   first_table->table_name.str);
 
   partition= (ha_partition*) first_table->table->file;
   /* Invoke the handler method responsible for truncating the partition. */
diff --git a/sql/sql_reload.cc b/sql/sql_reload.cc
index 5562de8d8d5..8eedffdf41a 100644
--- a/sql/sql_reload.cc
+++ b/sql/sql_reload.cc
@@ -545,7 +545,7 @@ bool flush_tables_with_read_lock(THD *thd, TABLE_LIST *all_tables)
       /* Request removal of table from cache. */
       tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
                        table_list->db.str,
-                       table_list->table_name.str, FALSE);
+                       table_list->table_name.str);
       /* Reset ticket to satisfy asserts in open_tables(). */
       table_list->mdl_request.ticket= NULL;
     }
diff --git a/sql/sql_rename.cc b/sql/sql_rename.cc
index ada373546be..1c6cf52963a 100644
--- a/sql/sql_rename.cc
+++ b/sql/sql_rename.cc
@@ -287,7 +287,7 @@ do_rename(THD *thd, TABLE_LIST *ren_table, const LEX_CSTRING *new_db,
   {
     DBUG_ASSERT(!thd->locked_tables_mode);
     tdc_remove_table(thd, TDC_RT_REMOVE_ALL,
-                     ren_table->db.str, ren_table->table_name.str, false);
+                     ren_table->db.str, ren_table->table_name.str);
 
     if (hton != view_pseudo_hton)
     {
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index b484d9502d5..440cc0dfba7 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -2470,8 +2470,8 @@ int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists,
         table->table= 0;
       }
       else
-        tdc_remove_table(thd, TDC_RT_REMOVE_ALL, table->db.str, table->table_name.str,
-                         false);
+        tdc_remove_table(thd, TDC_RT_REMOVE_ALL, table->db.str,
+                         table->table_name.str);
 
       /* Check that we have an exclusive lock on the table to be dropped. */
       DBUG_ASSERT(thd->mdl_context.is_lock_owner(MDL_key::TABLE, table->db.str,
@@ -7626,8 +7626,7 @@ static bool mysql_inplace_alter_table(THD *thd,
       goto cleanup;
 
     tdc_remove_table(thd, TDC_RT_REMOVE_NOT_OWN_KEEP_SHARE,
-                     table->s->db.str, table->s->table_name.str,
-                     false);
+                     table->s->db.str, table->s->table_name.str);
   }
 
   /*
@@ -7821,7 +7820,7 @@ static bool mysql_inplace_alter_table(THD *thd,
   {
     // Remove TABLE and TABLE_SHARE for old name from TDC.
     tdc_remove_table(thd, TDC_RT_REMOVE_ALL,
-                     alter_ctx->db.str, alter_ctx->table_name.str, false);
+                     alter_ctx->db.str, alter_ctx->table_name.str);
 
     if (mysql_rename_table(db_type, &alter_ctx->db, &alter_ctx->table_name,
                            &alter_ctx->new_db, &alter_ctx->new_alias, 0))
diff --git a/sql/sql_truncate.cc b/sql/sql_truncate.cc
index bfcdda6e0e9..8e078ff02af 100644
--- a/sql/sql_truncate.cc
+++ b/sql/sql_truncate.cc
@@ -361,7 +361,7 @@ bool Sql_cmd_truncate_table::lock_table(THD *thd, TABLE_LIST *table_ref,
   {
     /* Table is already locked exclusively. Remove cached instances. */
     tdc_remove_table(thd, TDC_RT_REMOVE_ALL, table_ref->db.str,
-                     table_ref->table_name.str, FALSE);
+                     table_ref->table_name.str);
   }
 
   DBUG_RETURN(FALSE);
diff --git a/sql/sql_view.cc b/sql/sql_view.cc
index 2011abf79ba..ecf4ba2f22d 100644
--- a/sql/sql_view.cc
+++ b/sql/sql_view.cc
@@ -646,7 +646,8 @@ bool mysql_create_view(THD *thd, TABLE_LIST *views,
   */
 
   if (!res)
-    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, view->db.str, view->table_name.str, false);
+    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, view->db.str,
+                     view->table_name.str);
 
   if (!res && mysql_bin_log.is_open())
   {
@@ -1866,8 +1867,8 @@ bool mysql_drop_view(THD *thd, TABLE_LIST *views, enum_drop_mode drop_mode)
       For a view, there is a TABLE_SHARE object.
       Remove it from the table definition cache, in case the view was cached.
     */
-    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, view->db.str, view->table_name.str,
-                     FALSE);
+    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, view->db.str,
+                     view->table_name.str);
     query_cache_invalidate3(thd, view, 0);
     sp_cache_invalidate();
   }
diff --git a/sql/table_cache.cc b/sql/table_cache.cc
index 15afe9bfed1..4b88be421fe 100644
--- a/sql/table_cache.cc
+++ b/sql/table_cache.cc
@@ -1004,47 +1004,6 @@ void tdc_release_share(TABLE_SHARE *share)
 
 
 /**
-   Auxiliary function which allows to kill delayed threads for
-   particular table identified by its share.
-
-   @param share Table share.
-
-   @pre Caller should have TABLE_SHARE::tdc.LOCK_table_share mutex.
-*/
-
-static void kill_delayed_threads_for_table(TDC_element *element)
-{
-  All_share_tables_list::Iterator it(element->all_tables);
-  TABLE *tab;
-
-  mysql_mutex_assert_owner(&element->LOCK_table_share);
-
-  if (!delayed_insert_threads)
-    return;
-
-  while ((tab= it++))
-  {
-    THD *in_use= tab->in_use;
-
-    DBUG_ASSERT(in_use && tab->s->tdc->flushed);
-    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);
-    }
-  }
-}
-
-
-/**
    Remove all or some (depending on parameter) instances of TABLE and
    TABLE_SHARE from the table definition cache.
 
@@ -1077,15 +1036,13 @@ static void kill_delayed_threads_for_table(TDC_element *element)
                                                 metadata lock on the table.
    @param  db           Name of database
    @param  table_name   Name of table
-   @param  kill_delayed_threads     If TRUE, kill INSERT DELAYED threads
 
    @note It assumes that table instances are already not used by any
    (other) thread (this should be achieved by using meta-data locks).
 */
 
 bool tdc_remove_table(THD *thd, enum_tdc_remove_table_type remove_type,
-                      const char *db, const char *table_name,
-                      bool kill_delayed_threads)
+                      const char *db, const char *table_name)
 {
   Share_free_tables::List purge_tables;
   TABLE *table;
@@ -1129,9 +1086,6 @@ bool tdc_remove_table(THD *thd, enum_tdc_remove_table_type remove_type,
   tc_remove_all_unused_tables(element, &purge_tables,
                               remove_type != TDC_RT_REMOVE_NOT_OWN_KEEP_SHARE);
 
-  if (kill_delayed_threads)
-    kill_delayed_threads_for_table(element);
-
   if (remove_type == TDC_RT_REMOVE_NOT_OWN ||
       remove_type == TDC_RT_REMOVE_NOT_OWN_KEEP_SHARE)
   {
diff --git a/sql/table_cache.h b/sql/table_cache.h
index 05a1803cc50..175f25a5e28 100644
--- a/sql/table_cache.h
+++ b/sql/table_cache.h
@@ -82,8 +82,7 @@ extern TABLE_SHARE *tdc_acquire_share(THD *thd, TABLE_LIST *tl, uint flags,
                                       TABLE **out_table= 0);
 extern void tdc_release_share(TABLE_SHARE *share);
 extern bool tdc_remove_table(THD *thd, enum_tdc_remove_table_type remove_type,
-                             const char *db, const char *table_name,
-                             bool kill_delayed_threads);
+                             const char *db, const char *table_name);
 
 extern int tdc_wait_for_old_version(THD *thd, const char *db,
                                     const char *table_name,