mariadb/mysys/mf_sort.c

/* 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; version 2 of the License.

   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);
    }
  }
}