Rename:

- current_arena to stmt_arena: the thread may have more than one
'current' arenas: one for runtime data, and one for the parsed 
tree of a statement. Only one of them is active at any moment.
- set_item_arena -> set_query_arena, because Item_arena was renamed to 
Query_arena a while ago
- set_n_backup_item_arena -> set_n_backup_active_arena;
the active arena is the arena thd->mem_root and thd->free_list
are currently pointing at.
- restore_backup_item_arena -> restore_active_arena (with the same
rationale)
- change_arena_if_needed -> activate_stmt_arena_if_needed; this
method sets thd->stmt_arena active if it's not done yet.


sql/item.cc:
  Rename.
sql/item_cmpfunc.cc:
  Rename.
sql/item_func.cc:
  Rename.
sql/item_subselect.cc:
  Rename.
sql/item_subselect.h:
  Remove an unused forward declaration.
sql/item_sum.h:
  Remove an unused forward declaration.
sql/mysql_priv.h:
  Remove an unused forward declaration.
sql/sp.cc:
  Rename.
sql/sp_head.cc:
  Rename.
sql/sql_base.cc:
  Rename.
sql/sql_class.cc:
  Rename.
sql/sql_class.h:
  Rename.
sql/sql_lex.cc:
  Rename.
sql/sql_parse.cc:
  Rename.
sql/sql_prepare.cc:
  Rename.
sql/sql_select.cc:
  Rename.
sql/sql_show.cc:
  Rename.
sql/sql_union.cc:
  Rename.
sql/sql_view.cc:
  Rename.
sql/table.cc:
  Rename.

1 files changed, 4 insertions, 4 deletions

diff --git a/sql/sql_view.cc b/sql/sql_view.cc
index 8269c16916a..4955361182a 100644
--- a/sql/sql_view.cc
+++ b/sql/sql_view.cc
@@ -700,11 +700,11 @@ mysql_make_view(File_parser *parser, TABLE_LIST *table)
     For now we assume that tables will not be changed during PS life (it
     will be TRUE as far as we make new table cache).
   */
-  Query_arena *arena= thd->current_arena, backup;
+  Query_arena *arena= thd->stmt_arena, backup;
   if (arena->is_conventional())
     arena= 0;
   else
-    thd->set_n_backup_item_arena(arena, &backup);
+    thd->set_n_backup_active_arena(arena, &backup);
 
   /* init timestamp */
   if (!table->timestamp.str)
@@ -997,13 +997,13 @@ ok:
 
 ok2:
   if (arena)
-    thd->restore_backup_item_arena(arena, &backup);
+    thd->restore_active_arena(arena, &backup);
   thd->lex= old_lex;
   DBUG_RETURN(0);
 
 err:
   if (arena)
-    thd->restore_backup_item_arena(arena, &backup);
+    thd->restore_active_arena(arena, &backup);
   delete table->view;
   table->view= 0;	// now it is not VIEW placeholder
   thd->lex= old_lex;