Objects_Information *_Objects_Get_information( Objects_APIs the_api, uint16_t the_class ) { Objects_Information *info; int the_class_api_maximum; if ( !the_class ) return NULL; /* * This call implicitly validates the_api so we do not call * _Objects_Is_api_valid above here. */ the_class_api_maximum = _Objects_API_maximum_class( the_api ); if ( the_class_api_maximum == 0 ) return NULL; if ( the_class > (uint32_t) the_class_api_maximum ) return NULL; if ( !_Objects_Information_table[ the_api ] ) return NULL; info = _Objects_Information_table[ the_api ][ the_class ]; if ( !info ) return NULL; /* * In a multprocessing configuration, we may access remote objects. * Thus we may have 0 local instances and still have a valid object * pointer. */ #if !defined(RTEMS_MULTIPROCESSING) if ( info->maximum == 0 ) return NULL; #endif return info; }
int rtems_object_api_maximum_class( int api ) { return _Objects_API_maximum_class(api); }