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/*
* Copyright (c) 2014, 2017 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/schedulerimpl.h>
bool _Scheduler_Set_affinity(
Thread_Control *the_thread,
size_t cpusetsize,
const cpu_set_t *cpuset
)
{
Processor_mask affinity;
Processor_mask_Copy_status status;
const Scheduler_Control *scheduler;
Scheduler_Node *node;
ISR_lock_Context lock_context;
bool ok;
status = _Processor_mask_From_cpu_set_t( &affinity, cpusetsize, cpuset );
if ( !_Processor_mask_Is_at_most_partial_loss( status ) ) {
return false;
}
/*
* Reduce affinity set to the online processors to be in line with
* _Thread_Initialize() which sets the default affinity to the set of online
* processors.
*/
_Processor_mask_And( &affinity, _SMP_Get_online_processors(), &affinity );
scheduler = _Thread_Scheduler_get_home( the_thread );
_Scheduler_Acquire_critical( scheduler, &lock_context );
node = _Thread_Scheduler_get_home_node( the_thread );
#if defined(RTEMS_SMP)
ok = ( *scheduler->Operations.set_affinity )(
scheduler,
the_thread,
node,
&affinity
);
if ( ok ) {
_Processor_mask_Assign( &the_thread->Scheduler.Affinity, &affinity );
}
#else
ok = _Scheduler_default_Set_affinity_body(
scheduler,
the_thread,
node,
&affinity
);
#endif
_Scheduler_Release_critical( scheduler, &lock_context );
return ok;
}
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