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