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/**
* @file
*
* @brief RTEMS Timer Reset
* @ingroup ClassicTimer Timers
*/
/*
* 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.org/license/LICENSE.
*/
#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/thread.h>
#include <rtems/rtems/timerimpl.h>
#include <rtems/score/watchdogimpl.h>
/*
* rtems_timer_reset
*
* This directive allows a thread to reset a timer.
*
* Input parameters:
* id - timer id
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_timer_reset(
rtems_id id
)
{
Timer_Control *the_timer;
Objects_Locations location;
rtems_status_code status = RTEMS_SUCCESSFUL;
the_timer = _Timer_Get( id, &location );
switch ( location ) {
case OBJECTS_LOCAL:
if ( the_timer->the_class == TIMER_INTERVAL ) {
_Watchdog_Remove( &the_timer->Ticker );
_Watchdog_Insert( &_Watchdog_Ticks_chain, &the_timer->Ticker );
} else if ( the_timer->the_class == TIMER_INTERVAL_ON_TASK ) {
Timer_server_Control *timer_server = _Timer_server;
/*
* There is no way for a timer to have this class unless
* it was scheduled as a server fire. That requires that
* the Timer Server be initiated. So this error cannot
* occur unless something is internally wrong.
*/
#if defined(RTEMS_DEBUG)
if ( !timer_server ) {
_Objects_Put( &the_timer->Object );
return RTEMS_INCORRECT_STATE;
}
#endif
_Watchdog_Remove( &the_timer->Ticker );
(*timer_server->schedule_operation)( timer_server, the_timer );
} else {
/*
* Must be dormant or time of day timer (e.g. TIMER_DORMANT,
* TIMER_TIME_OF_DAY, or TIMER_TIME_OF_DAY_ON_TASK). We
* can only reset active interval timers.
*/
status = RTEMS_NOT_DEFINED;
}
_Objects_Put( &the_timer->Object );
return status;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE: /* should never return this */
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
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