osfmk/kern/zalloc.c

496 static int zcurrent  = 0;			/* index of the next slot in the log to use */
1894 		if (!corruption_debug_flag && zrecords[zcurrent].z_element && zrecorded < log_records) {
1899 			 * starting at zcurrent and wrap-around if we reach the end of the buffer.  If the buffer
1900 			 * is already full, we just fall through and overwrite the element indexed by zcurrent.
1903 			for (i = zcurrent; i < log_records; i++) {
1905 				        zcurrent = i;
1910 			for (i = 0; i < zcurrent; i++) {
1912 				        zcurrent = i;
1923 		  if (zrecords[zcurrent].z_element == NULL)
1926 		  zrecords[zcurrent].z_element = (void *)addr;
1927 		  zrecords[zcurrent].z_time = ztime++;
1928 		  zrecords[zcurrent].z_opcode = ZOP_ALLOC;
1931 		        zrecords[zcurrent].z_pc[i] = (void*) zbt[i];
1934 			zrecords[zcurrent].z_pc[i] = 0;
1936 		  zcurrent++;
1938 		  if (zcurrent >= log_records)
1939 		          zcurrent = 0;
2151 			if (zrecords[zcurrent].z_element == NULL)
2154 			zrecords[zcurrent].z_element = (void *)addr;
2155 			zrecords[zcurrent].z_time = ztime++;
2156 			zrecords[zcurrent].z_opcode = ZOP_FREE;
2159 				zrecords[zcurrent].z_pc[i] = zbt[i];
2162 				zrecords[zcurrent].z_pc[i] = 0;
2164 			zcurrent++;
2166 			if (zcurrent >= log_records)
2167 				zcurrent = 0;
2181 					zcurrent = i;