hp_clear.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:2k
- /* 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 */
- /*
- remove all records from database
- Identical as hp_create() and hp_open() but used HP_SHARE* instead of name and
- database remains open.
- */
- #include "heapdef.h"
- void heap_clear(HP_INFO *info)
- {
- _hp_clear(info->s);
- }
- void _hp_clear(HP_SHARE *info)
- {
- uint key;
- DBUG_ENTER("_hp_clear");
- if (info->block.levels)
- VOID(_hp_free_level(&info->block,info->block.levels,info->block.root,
- (byte*) 0));
- info->block.levels=0;
- for (key=0 ; key < info->keys ; key++)
- {
- HP_BLOCK *block= &info->keydef[key].block;
- if (block->levels)
- VOID(_hp_free_level(block,block->levels,block->root,(byte*) 0));
- block->levels=0;
- block->last_allocated=0;
- }
- info->records=info->deleted=info->data_length=info->index_length=0;;
- info->blength=1;
- info->changed=0;
- info->del_link=0;
- DBUG_VOID_RETURN;
- }