/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSImplClassicScheduler
*
* @brief This source file contains the implementation of
* rtems_scheduler_ident_by_processor_set().
*/
/*
* Copyright (c) 2017 embedded brains GmbH & Co. KG
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/scheduler.h>
#include <rtems/score/assert.h>
#include <rtems/score/schedulerimpl.h>
rtems_status_code rtems_scheduler_ident_by_processor_set(
size_t cpusetsize,
const cpu_set_t *cpuset,
rtems_id *id
)
{
Processor_mask set;
Processor_mask_Copy_status status;
uint32_t cpu_index;
const Scheduler_Control *scheduler;
if ( id == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
if ( cpuset == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
status = _Processor_mask_From_cpu_set_t( &set, cpusetsize, cpuset );
if ( status == PROCESSOR_MASK_COPY_INVALID_SIZE ) {
return RTEMS_INVALID_SIZE;
}
_Processor_mask_And( &set, &set, _SMP_Get_online_processors() );
cpu_index = _Processor_mask_Find_last_set( &set );
if ( cpu_index == 0 ) {
return RTEMS_INVALID_NAME;
}
scheduler = _Scheduler_Get_by_CPU( _Per_CPU_Get_by_index( cpu_index - 1) );
#if defined(RTEMS_SMP)
if ( scheduler == NULL ) {
return RTEMS_INCORRECT_STATE;
}
#else
_Assert( scheduler != NULL );
#endif
*id = _Scheduler_Build_id( _Scheduler_Get_index( scheduler ) );
return RTEMS_SUCCESSFUL;
}
