Differential D8433 Diff 27307 source/blender/makesdna/DNA_session_uuid_types.h

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				/*
				* 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.
				*/

				/** \file
				* \ingroup DNA
				*/

				#ifndef __DNA_SESSION_UUID_TYPES_H__
				#define __DNA_SESSION_UUID_TYPES_H__

				#include "BLI_sys_types.h"

				#ifdef __cplusplus
				extern "C" {
				#endif

				/* Is a structure because of the following considerations:
				*
				* - It is not possible to use custom types in DNA members: makesdna does not recognize them.
				* - It allows to add more bits, more than standard fixed-size types can store. For example, if
				* we ever need to go 128 bits, it is as simple as adding extra 64bit field.
				*/
				typedef struct SessionUUID {
				/* Never access directly, as it might cause a headache when more bits are needed: if the field
				* is used directly it will not be easy to find all places where partial access is used. */
				uint64_t uuid_;
				} SessionUUID;

				#ifdef __cplusplus
				}
				#endif

				#endif /* __DNA_SESSION_UUID_TYPES_H__ */