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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2008 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Joseph Eagar,
* Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenlib/intern/BLI_array.c
* \ingroup bli
* \brief A (mainly) macro array library.
*
* This is an array library, used to manage array (re)allocation.
*
* \note This is primarily accessed via macros,
* functions are used to implement some of the internals.
*
* Example usage:
*
* \code{.c}
* int *arr = NULL;
* BLI_array_declare(arr);
* int i;
*
* for (i = 0; i < 10; i++) {
* BLI_array_grow_one(arr);
* arr[i] = something;
* }
* BLI_array_free(arr);
* \endcode
*
* Arrays are over allocated, so each reallocation the array size is doubled.
* In situations where contiguous array access isn't needed,
* other solutions for allocation are available.
* Consider using on of: BLI_memarena.c, BLI_mempool.c, BLi_stack.c
*/
#include <string.h>
#include "BLI_array.h"
#include "BLI_sys_types.h"
#include "MEM_guardedalloc.h"
/**
* This function is only to be called via macros.
*
* \note The caller must adjust \a arr_count
*/
void _bli_array_grow_func(void **arr_p, const void *arr_static,
const int sizeof_arr_p, const int arr_count, const int num,
const char *alloc_str)
{
void *arr = *arr_p;
void *arr_tmp;
arr_tmp = MEM_mallocN(sizeof_arr_p *
((num < arr_count) ?
(arr_count * 2 + 2) : (arr_count + num)), alloc_str);
if (arr) {
memcpy(arr_tmp, arr, sizeof_arr_p * arr_count);
if (arr != arr_static) {
MEM_freeN(arr);
}
}
*arr_p = arr_tmp;
/* caller must do */
#if 0
arr_count += num;
#endif
}
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