/**
 * @file ensure_array_size.h
 *
 * @copyright Copyright  (C)  2013 Moritz Hanke <hanke@dkrz.de>
 *                                 Thomas Jahns <jahns@dkrz.de>
 *
 * @version 1.0
 * @author Moritz Hanke <hanke@dkrz.de>
 *         Thomas Jahns <jahns@dkrz.de>
 */
/*
 * Keywords:
 * Maintainer: Moritz Hanke <hanke@dkrz.de>
 *             Thomas Jahns <jahns@dkrz.de>
 * URL: https://doc.redmine.dkrz.de/YAC/html/index.html
 *
 * This file is part of YAC.
 *
 * YAC 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 3 of the License, or
 * (at your option) any later version.
 *
 * YAC 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 YAC.  If not, see <http://www.gnu.org/licenses/gpl.txt>.
 */

#ifndef ENSURE_ARRAY_SIZE_H
#define ENSURE_ARRAY_SIZE_H

#include <stdlib.h>

void
yac_realloc_array(void **array, size_t elem_size, size_t *curr_array_size,
                  size_t requested_size);

#define ENSURE_ARRAY_SIZE(arrayp, curr_array_size, req_size)            \
  do {                                                                  \
    if ((req_size) > (curr_array_size))                                 \
    {                                                                   \
      size_t casize = (curr_array_size);                                \
                                                                        \
      yac_realloc_array((void **)&(arrayp), sizeof(*(arrayp)), &casize, \
                        (req_size));                                    \
      (curr_array_size) = casize;                                       \
    }                                                                   \
  }                                                                     \
  while(0)

#endif
