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/*
* Rate Monotonic Manager
*
*
* COPYRIGHT (c) 1989-1999.
* 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/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/score/isr.h>
#include <rtems/score/object.h>
#include <rtems/rtems/ratemon.h>
#include <rtems/score/thread.h>
/*PAGE
*
* rtems_rate_monotonic_cancel
*
* This directive allows a thread to cancel a rate monotonic timer.
*
* Input parameters:
* id - rate monotonic id
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful and caller is not the owning thread
* error code - if unsuccessful
*/
rtems_status_code rtems_rate_monotonic_cancel(
Objects_Id id
)
{
Rate_monotonic_Control *the_period;
Objects_Locations location;
the_period = _Rate_monotonic_Get( id, &location );
switch ( location ) {
case OBJECTS_REMOTE:
return RTEMS_INTERNAL_ERROR; /* should never return this */
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
if ( !_Thread_Is_executing( the_period->owner ) ) {
_Thread_Enable_dispatch();
return RTEMS_NOT_OWNER_OF_RESOURCE;
}
(void) _Watchdog_Remove( &the_period->Timer );
the_period->state = RATE_MONOTONIC_INACTIVE;
_Thread_Enable_dispatch();
return RTEMS_SUCCESSFUL;
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
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