freem/src/shmmgr.h - diff

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version 1.5, 2025/05/08 16:29:18	version 1.6, 2025/05/09 19:44:50
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* along with FreeM. If not, see <https://www.gnu.org/licenses/>.	* along with FreeM. If not, see <https://www.gnu.org/licenses/>.
*	*
* $Log$	* $Log$
	* Revision 1.6 2025/05/09 19:44:50 snw
	* Begin shm rework
	*
* Revision 1.5 2025/05/08 16:29:18 snw	* Revision 1.5 2025/05/08 16:29:18 snw
* Add SOM/SOA/SBM/SBA macros from RSM and modify for FreeM	* Add SOM/SOA/SBM/SBA macros from RSM and modify for FreeM
*	*
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/* The following macros were borrowed from Reference Standard M	/* The following macros were borrowed from Reference Standard M
* SOM/SOA: reading and writing data stored in shared memory	* SOM/SOA: reading and writing data stored in shared memory
* SBM/SBA: for modifying pointers in shared memory	* SBM/SBA: for modifying pointers in shared memory
	*
	* Versions ending with 'A' will maintain NULL pointers.
*/	*/
#define SOM(ptr) ((__typeof__(ptr)) ((char ) (ptr) + ((char ) shm_config->dta - (char *) shm_config->hdr->shmad)))	#define SOM(ptr) ((__typeof__(ptr)) ((char ) (ptr) + ((char ) shm_config->dta - (char *) shm_config->hdr->shmad)))
#define SOA(ptr) ((ptr == NULL) ? NULL : SOM(ptr))	#define SOA(ptr) ((ptr == NULL) ? NULL : SOM(ptr))