score/src/objectinitializeinformation.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreObject
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Objects_Initialize_information().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2011.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #ifdef HAVE_CONFIG_H
0039 #include "config.h"
0040 #endif
0041
0042 #include <rtems/score/objectimpl.h>
0043 #include <rtems/score/address.h>
0044 #include <rtems/score/chainimpl.h>
0045 #include <rtems/score/sysstate.h>
0046
0047 void _Objects_Initialize_information(
0048   Objects_Information *information
0049 )
0050 {
0051   Objects_Id       maximum_id;
0052   Objects_Id       api_class_and_node;
0053   Objects_Maximum  maximum;
0054   Objects_Maximum  index;
0055   Chain_Node      *head;
0056   Chain_Node      *tail;
0057   Chain_Node      *current;
0058   Objects_Control *next;
0059
0060   maximum_id = information->maximum_id;
0061
0062 #if defined(RTEMS_MULTIPROCESSING)
0063   maximum_id &= ~OBJECTS_NODE_MASK;
0064   maximum_id |= _Objects_Local_node << OBJECTS_NODE_START_BIT;
0065   information->maximum_id = maximum_id;
0066 #endif
0067
0068   maximum = _Objects_Get_index( maximum_id );
0069   api_class_and_node = maximum_id & ~OBJECTS_INDEX_MASK;
0070
0071   /*
0072    *  Register this Object Class in the Object Information Table.
0073    */
0074   _Assert( _Objects_Get_API( maximum_id ) <= OBJECTS_APIS_LAST );
0075   _Objects_Information_table[ _Objects_Get_API( maximum_id ) ]
0076     [ _Objects_Get_class( maximum_id ) ] = information;
0077
0078   head = _Chain_Head( &information->Inactive );
0079   tail = _Chain_Tail( &information->Inactive );
0080   current = head;
0081   next = information->initial_objects;
0082
0083   head->previous = NULL;
0084
0085   for ( index = OBJECTS_INDEX_MINIMUM; index <= maximum ; ++index ) {
0086     current->next = &next->Node;
0087     next->Node.previous = current;
0088     current = &next->Node;
0089     next->id = api_class_and_node | ( index << OBJECTS_INDEX_START_BIT );
0090     next = _Addresses_Add_offset( next, information->object_size );
0091   }
0092
0093   current->next = tail;
0094   tail->previous = current;
0095 }