diff options
author | Bastien Montagne <montagne29@wanadoo.fr> | 2015-10-20 15:39:08 +0300 |
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committer | Bastien Montagne <montagne29@wanadoo.fr> | 2015-10-20 15:44:15 +0300 |
commit | dcb56d79a87966d93fe0509e64ab51eb90c1d486 (patch) | |
tree | 7bb37fb0e067bf8ee433c0180a7b6759199c45c6 /source/blender/blenlib/intern/memory_utils.c | |
parent | f08dad0e03ffafab925a4b7f2226bab580e79f7b (diff) |
BLI: add new 'memory_utils' module with func checking a whole memory chunk is filled of zero,
and an helper to ensure all memory of a given structure passed a given member is filled of zero.
Diffstat (limited to 'source/blender/blenlib/intern/memory_utils.c')
-rw-r--r-- | source/blender/blenlib/intern/memory_utils.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/memory_utils.c b/source/blender/blenlib/intern/memory_utils.c new file mode 100644 index 00000000000..2ebb8be5bb4 --- /dev/null +++ b/source/blender/blenlib/intern/memory_utils.c @@ -0,0 +1,50 @@ +/* + * ***** 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. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/blenlib/intern/memory_utils.c + * \ingroup bli + * \brief Generic memory manipulation API. + * + * This is to extend on existing functions + * such as ``memcpy`` & ``memcmp``. + */ +#include <string.h> + +#include "BLI_sys_types.h" +#include "BLI_utildefines.h" + +#include "BLI_memory_utils.h" + +#include "BLI_strict_flags.h" + +/** + * Check if memory is zero'd, as with memset(s, 0, nbytes) + */ +bool BLI_memory_is_zero(const void *s, const size_t nbytes) +{ + const char *s_byte = s; + const char *s_end = (const char *)s + nbytes; + + while ((s_byte != s_end) && (*s_byte == 0)) { + s_byte++; + } + + return (s_byte == s_end); +} |