97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2008 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Joseph Eagar,
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* Campbell Barton
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/blenlib/intern/BLI_array.c
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* \ingroup bli
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* \brief A (mainly) macro array library.
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*
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* This is an array library, used to manage array (re)allocation.
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*
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* \note This is primarily accessed via macros,
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* functions are used to implement some of the internals.
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*
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* Example usage:
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*
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* \code{.c}
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* int *arr = NULL;
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* BLI_array_declare(arr);
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* int i;
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*
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* for (i = 0; i < 10; i++) {
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* BLI_array_grow_one(arr);
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* arr[i] = something;
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* }
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* BLI_array_free(arr);
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* \endcode
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*
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* Arrays are over allocated, so each reallocation the array size is doubled.
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* In situations where contiguous array access isn't needed,
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* other solutions for allocation are available.
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* Consider using on of: BLI_memarena.c, BLI_mempool.c, BLi_stack.c
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*/
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#include <string.h>
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#include "BLI_array.h"
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#include "BLI_sys_types.h"
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#include "MEM_guardedalloc.h"
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/**
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* This function is only to be called via macros.
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*
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* \note The caller must adjust \a arr_count
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*/
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void _bli_array_grow_func(void **arr_p, const void *arr_static,
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const int sizeof_arr_p, const int arr_count, const int num,
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const char *alloc_str)
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{
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void *arr = *arr_p;
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void *arr_tmp;
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arr_tmp = MEM_mallocN(sizeof_arr_p *
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((num < arr_count) ?
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(arr_count * 2 + 2) : (arr_count + num)), alloc_str);
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if (arr) {
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memcpy(arr_tmp, arr, sizeof_arr_p * arr_count);
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if (arr != arr_static) {
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MEM_freeN(arr);
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}
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}
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*arr_p = arr_tmp;
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/* caller must do */
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#if 0
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arr_count += num;
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#endif
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}
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