hp_create.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 */
- /*
- Create is done by simply remove the database from memory if it exists.
- Open creates the database when neaded
- */
- #include "heapdef.h"
- int heap_create(const char *name)
- {
- DBUG_ENTER("heap_create");
- (void) heap_delete_all(name);
- DBUG_RETURN(0);
- }
- int heap_delete_all(const char *name)
- {
- reg1 HP_SHARE *info;
- int found;
- DBUG_ENTER("heap_delete_all");
- pthread_mutex_lock(&THR_LOCK_heap);
- if ((info=_hp_find_named_heap(name)))
- {
- if (info->open_count == 0)
- _hp_free(info);
- found=0;
- }
- else
- {
- found=my_errno=ENOENT;
- }
- pthread_mutex_unlock(&THR_LOCK_heap);
- DBUG_RETURN(found);
- }
- void _hp_free(HP_SHARE *share)
- {
- heap_share_list=list_delete(heap_share_list,&share->open_list);
- _hp_clear(share); /* Remove blocks from memory */
- #ifdef THREAD
- thr_lock_delete(&share->lock);
- VOID(pthread_mutex_destroy(&share->intern_lock));
- #endif
- my_free((gptr) share->name,MYF(0));
- my_free((gptr) share,MYF(0));
- return;
- }