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/*
* RTEMS Task Manager
*
*
* COPYRIGHT (c) 1989-2007.
* 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.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/config.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/rtems/modes.h>
#include <rtems/score/object.h>
#include <rtems/score/stack.h>
#include <rtems/score/states.h>
#include <rtems/rtems/tasks.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
#include <rtems/score/tod.h>
#include <rtems/score/userext.h>
#include <rtems/score/wkspace.h>
#include <rtems/score/apiext.h>
#include <rtems/score/sysstate.h>
/*PAGE
*
* rtems_task_set_note
*
* This directive sets the specified notepad contents to the given
* note.
*
* Input parameters:
* id - thread id
* notepad - notepad number
* note - note value
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_task_set_note(
Objects_Id id,
uint32_t notepad,
uint32_t note
)
{
register Thread_Control *the_thread;
Objects_Locations location;
RTEMS_API_Control *api;
if ( !rtems_configuration_get_notepads_enabled() )
return RTEMS_NOT_CONFIGURED;
/*
* NOTE: There is no check for < RTEMS_NOTEPAD_FIRST because that would
* be checking an unsigned number for being negative.
*/
if ( notepad > RTEMS_NOTEPAD_LAST )
return RTEMS_INVALID_NUMBER;
/*
* Optimize the most likely case to avoid the Thread_Dispatch.
*/
if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) ||
_Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) {
api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ];
api->Notepads[ notepad ] = note;
return RTEMS_SUCCESSFUL;
}
the_thread = _Thread_Get( id, &location );
switch ( location ) {
case OBJECTS_LOCAL:
api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
api->Notepads[ notepad ] = note;
_Thread_Enable_dispatch();
return RTEMS_SUCCESSFUL;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
return _RTEMS_tasks_MP_Send_request_packet(
RTEMS_TASKS_MP_SET_NOTE_REQUEST,
id,
0, /* Not used */
notepad,
note
);
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
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