mf_sort.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:1k
- /* Copyright (C) 2000 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; 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 */
- /* Sort of string pointers in string-order with radix or qsort */
- #include "mysys_priv.h"
- #include <m_string.h>
- void my_string_ptr_sort(void *base, uint items, size_s size)
- {
- #if INT_MAX > 65536L
- uchar **ptr=0;
- if (size <= 20 && items >= 1000 && items < 100000 &&
- (ptr= (uchar**) my_malloc(items*sizeof(char*),MYF(0))))
- {
- radixsort_for_str_ptr((uchar**) base,items,size,ptr);
- my_free((gptr) ptr,MYF(0));
- }
- else
- #endif
- {
- if (size && items)
- {
- uint size_arg=size;
- qsort2(base,items,sizeof(byte*),get_ptr_compare(size),(void*) &size_arg);
- }
- }
- }