1 files changed, 68 insertions, 0 deletions
diff --git a/storage/myisammrg/myrg_close.c b/storage/myisammrg/myrg_close.c
new file mode 100644
index 00000000..636382f9
--- /dev/null
+++ b/storage/myisammrg/myrg_close.c
@@ -0,0 +1,68 @@
+/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+/* close a isam-database */
+
+#include "myrg_def.h"
+
+int myrg_close(MYRG_INFO *info)
+{
+  int error=0,new_error;
+  MYRG_TABLE *file;
+  DBUG_ENTER("myrg_close");
+
+  /*
+    Assume that info->children_attached means that this is called from
+    direct use of MERGE, not from a MySQL server. In this case the
+    children must be closed and info->rec_per_key_part is part of the
+    'info' multi_alloc.
+    If info->children_attached is false, this is called from a MySQL
+    server. Children are closed independently but info->rec_per_key_part
+    must be freed.
+    Just in case of a server panic (myrg_panic()) info->children_attached
+    might be true. We would close the children though they should be
+    closed independently and info->rec_per_key_part is not freed.
+    This should be acceptable for a panic.
+    In case of a MySQL server and no children, children_attached is
+    always true. In this case no rec_per_key_part has been allocated.
+    So it is correct to use the branch where an empty list of tables is
+    (not) closed.
+  */
+  if (info->children_attached)
+  {
+    for (file= info->open_tables; file != info->end_table; file++)
+    {
+      /* purecov: begin inspected */
+      if ((new_error= mi_close(file->table)))
+        error= new_error;
+      else
+        file->table= NULL;
+      /* purecov: end */
+    }
+  }
+  else
+    my_free(info->rec_per_key_part);
+  delete_queue(&info->by_key);
+  mysql_mutex_lock(&THR_LOCK_open);
+  myrg_open_list=list_delete(myrg_open_list,&info->open_list);
+  mysql_mutex_unlock(&THR_LOCK_open);
+  mysql_mutex_destroy(&info->mutex);
+  my_free(info);
+  if (error)
+  {
+    DBUG_RETURN(my_errno=error);
+  }
+  DBUG_RETURN(0);
+}