score/src/schedulercbscreateserver.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreSchedulerCBS
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Scheduler_CBS_Create_server().
0010  */
0011
0012 /*
0013  *  Copyright (C) 2011 Petr Benes.
0014  *  Copyright (C) 2011 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/schedulercbs.h>
0043 #include <rtems/score/scheduleredfimpl.h>
0044
0045 int _Scheduler_CBS_Create_server (
0046   Scheduler_CBS_Parameters     *params,
0047   Scheduler_CBS_Budget_overrun  budget_overrun_callback,
0048   rtems_id                     *server_id
0049 )
0050 {
0051   unsigned int i;
0052   Scheduler_CBS_Server *the_server;
0053
0054   if ( params->budget <= 0 ||
0055        params->deadline <= 0 ||
0056        params->budget >= SCHEDULER_EDF_PRIO_MSB ||
0057        params->deadline >= SCHEDULER_EDF_PRIO_MSB )
0058     return SCHEDULER_CBS_ERROR_INVALID_PARAMETER;
0059
0060   for ( i = 0; i<_Scheduler_CBS_Maximum_servers; i++ ) {
0061     if ( !_Scheduler_CBS_Server_list[i].initialized )
0062       break;
0063   }
0064
0065   if ( i == _Scheduler_CBS_Maximum_servers )
0066     return SCHEDULER_CBS_ERROR_FULL;
0067
0068   *server_id = i;
0069   the_server = &_Scheduler_CBS_Server_list[*server_id];
0070   the_server->parameters = *params;
0071   the_server->task_id = -1;
0072   the_server->cbs_budget_overrun = budget_overrun_callback;
0073   the_server->initialized = true;
0074   return SCHEDULER_CBS_OK;
0075 }