mi_changed.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:1k
- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; either version 2 of the License, or
- (at your option) any later version.
-
- 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- /* Check if somebody has changed table since last check. */
- #include "myisamdef.h"
- /* Return 0 if table isn't changed */
- int mi_is_changed(MI_INFO *info)
- {
- int result;
- DBUG_ENTER("mi_is_changed");
- if (_mi_readinfo(info,F_RDLCK,1))
- DBUG_RETURN(-1);
- VOID(_mi_writeinfo(info,0));
- result=(int) info->data_changed;
- info->data_changed=0;
- DBUG_PRINT("exit",("result: %d",result));
- DBUG_RETURN(result);
- }