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/*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <itron.h>
#include <rtems/score/thread.h>
#include <rtems/score/userext.h>
#include <rtems/score/wkspace.h>
#include <rtems/score/apiext.h>
#include <rtems/score/sysstate.h>
#include <rtems/itron/task.h>
/*
* chg_pri - Change Task Priority
*/
ER chg_pri(
ID tskid,
PRI tskpri
)
{
register Thread_Control *the_thread;
Objects_Locations location;
Priority_Control new_priority;
the_thread = _ITRON_Task_Get( tskid, &location );
if (!the_thread)
_ITRON_return_errorno( _ITRON_Task_Clarify_get_id_error( tskid ) );
if (_States_Is_dormant( the_thread->current_state ))
return -1;
if (( tskpri <= 0 ) || ( tskpri >= 256 ))
_ITRON_return_errorno( E_PAR );
switch ( location ) {
case OBJECTS_REMOTE:
case OBJECTS_ERROR:
_ITRON_return_errorno( _ITRON_Task_Clarify_get_id_error( tskid ));
case OBJECTS_LOCAL:
new_priority = _ITRON_Task_Priority_to_Core( tskpri );
the_thread->real_priority = new_priority;
/*
* XXX This is from the rtems side and I'm not sure what this is for.
* XXX Is this check right or should change priority be called
* regardless?
*/
if ( the_thread->resource_count == 0 ||
the_thread->current_priority > new_priority )
_Thread_Change_priority( the_thread, new_priority, FALSE );
_Thread_Enable_dispatch();
return E_OK;
}
return E_OBJ; /* XXX - Should never get here */
}
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