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bk@work.mysql.com 2000-07-31 21:29:14 +02:00
commit f4c589ff6c
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mysys/mf_sort.c Normal file
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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; 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 &&
(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);
}
}
}