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/* Copyright (c) 2000, 2001, 2005-2007 MySQL AB
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 Street, Fifth Floor, Boston, MA 02110-1301, 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((uchar*) info->rec_per_key_part, MYF(MY_ALLOW_ZERO_PTR));
delete_queue(&info->by_key);
pthread_mutex_lock(&THR_LOCK_open);
myrg_open_list=list_delete(myrg_open_list,&info->open_list);
pthread_mutex_unlock(&THR_LOCK_open);
VOID(pthread_mutex_destroy(&info->mutex));
my_free((uchar*) info,MYF(0));
if (error)
{
DBUG_RETURN(my_errno=error);
}
DBUG_RETURN(0);
}
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