MDEV-9488 - Table cache cleanups

tdc_assign_new_table_id() does not relate to table cache, move it out of
table_cache.cc.

1 files changed, 0 insertions, 54 deletions

diff --git a/sql/table_cache.cc b/sql/table_cache.cc
index 2dd368a1945..19e8250f99d 100644
--- a/sql/table_cache.cc
+++ b/sql/table_cache.cc
@@ -67,7 +67,6 @@ I_P_List <TDC_element,
           I_P_List_fast_push_back<TDC_element> > unused_shares;
 
 static int64 tdc_version;  /* Increments on each reload */
-static int64 last_table_id;
 static bool tdc_inited;
 
 static int32 tc_count; /**< Number of TABLE objects in table cache. */
@@ -1091,56 +1090,3 @@ int tdc_iterate(THD *thd, my_hash_walk_action action, void *argument,
   }
   return res;
 }
-
-
-/*
-  Function to assign a new table map id to a table share.
-
-  PARAMETERS
-
-    share - Pointer to table share structure
-
-  DESCRIPTION
-
-    We are intentionally not checking that share->mutex is locked
-    since this function should only be called when opening a table
-    share and before it is entered into the table definition cache
-    (meaning that it cannot be fetched by another thread, even
-    accidentally).
-
-  PRE-CONDITION(S)
-
-    share is non-NULL
-    last_table_id_lock initialized (tdc_inited)
-
-  POST-CONDITION(S)
-
-    share->table_map_id is given a value that with a high certainty is
-    not used by any other table (the only case where a table id can be
-    reused is on wrap-around, which means more than 4 billion table
-    share opens have been executed while one table was open all the
-    time).
-
-    share->table_map_id is not ~0UL.
-*/
-
-void tdc_assign_new_table_id(TABLE_SHARE *share)
-{
-  ulong tid;
-  DBUG_ENTER("assign_new_table_id");
-  DBUG_ASSERT(share);
-  DBUG_ASSERT(tdc_inited);
-
-  /*
-    There is one reserved number that cannot be used.  Remember to
-    change this when 6-byte global table id's are introduced.
-  */
-  do
-  {
-    tid= my_atomic_add64_explicit(&last_table_id, 1, MY_MEMORY_ORDER_RELAXED);
-  } while (unlikely(tid == ~0UL));
-
-  share->table_map_id= tid;
-  DBUG_PRINT("info", ("table_id= %lu", share->table_map_id));
-  DBUG_VOID_RETURN;
-}