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/**
* @file
*
* @brief RTEMS Task Get Affinity
* @ingroup ClassicTasks Tasks
*/
/*
* COPYRIGHT (c) 2014.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#if defined(__RTEMS_HAVE_SYS_CPUSET_H__)
#include <rtems/rtems/tasks.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/cpusetimpl.h>
#include <rtems/score/schedulerimpl.h>
rtems_status_code rtems_task_get_affinity(
rtems_id id,
size_t cpusetsize,
cpu_set_t *cpuset
)
{
Thread_Control *the_thread;
ISR_lock_Context lock_context;
Per_CPU_Control *cpu_self;
bool ok;
if ( cpuset == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
the_thread = _Thread_Get( id, &lock_context );
if ( the_thread == NULL ) {
#if defined(RTEMS_MULTIPROCESSING)
if ( _Thread_MP_Is_remote( id ) ) {
return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
}
#endif
return RTEMS_INVALID_ID;
}
cpu_self = _Thread_Dispatch_disable_critical( &lock_context );
_Thread_State_acquire_critical( the_thread, &lock_context );
ok = _Scheduler_Get_affinity(
the_thread,
cpusetsize,
cpuset
);
_Thread_State_release( the_thread, &lock_context );
_Thread_Dispatch_enable( cpu_self );
return ok ? RTEMS_SUCCESSFUL : RTEMS_INVALID_NUMBER;
}
#endif
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