rtems_status_code rtems_timer_reset(
rtems_id id
)
{
Timer_Control *the_timer;
ISR_lock_Context lock_context;
the_timer = _Timer_Get( id, &lock_context );
if ( the_timer != NULL ) {
Per_CPU_Control *cpu;
rtems_status_code status;
cpu = _Timer_Acquire_critical( the_timer, &lock_context );
if ( _Timer_Is_interval_class( the_timer->the_class ) ) {
_Timer_Cancel( cpu, the_timer );
_Watchdog_Insert(
&cpu->Watchdog.Header[ PER_CPU_WATCHDOG_MONOTONIC ],
&the_timer->Ticker,
cpu->Watchdog.ticks + the_timer->initial
);
status = RTEMS_SUCCESSFUL;
} else {
status = RTEMS_NOT_DEFINED;
}
_Timer_Release( cpu, &lock_context );
return status;
}
return RTEMS_INVALID_ID;
}
rtems_status_code rtems_timer_fire_after(
rtems_id id,
rtems_interval ticks,
rtems_timer_service_routine_entry routine,
void *user_data
)
{
Timer_Control *the_timer;
Objects_Locations location;
ISR_Level level;
if ( ticks == 0 )
return RTEMS_INVALID_NUMBER;
if ( !routine )
return RTEMS_INVALID_ADDRESS;
the_timer = _Timer_Get( id, &location );
switch ( location ) {
case OBJECTS_LOCAL:
_Timer_Cancel( the_timer );
_ISR_Disable( level );
/*
* Check to see if the watchdog has just been inserted by a
* higher priority interrupt. If so, abandon this insert.
*/
if ( the_timer->Ticker.state != WATCHDOG_INACTIVE ) {
_ISR_Enable( level );
_Objects_Put( &the_timer->Object );
return RTEMS_SUCCESSFUL;
}
/*
* OK. Now we now the timer was not rescheduled by an interrupt
* so we can atomically initialize it as in use.
*/
the_timer->the_class = TIMER_INTERVAL;
_Watchdog_Initialize( &the_timer->Ticker, routine, id, user_data );
_ISR_Enable( level );
_Watchdog_Insert_ticks( &the_timer->Ticker, ticks );
_Objects_Put( &the_timer->Object );
return RTEMS_SUCCESSFUL;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE: /* should never return this */
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
rtems_status_code _Timer_Fire(
rtems_id id,
rtems_interval interval,
rtems_timer_service_routine_entry routine,
void *user_data,
Timer_Classes the_class,
Watchdog_Service_routine_entry adaptor
)
{
Timer_Control *the_timer;
ISR_lock_Context lock_context;
the_timer = _Timer_Get( id, &lock_context );
if ( the_timer != NULL ) {
Per_CPU_Control *cpu;
cpu = _Timer_Acquire_critical( the_timer, &lock_context );
_Timer_Cancel( cpu, the_timer );
_Watchdog_Initialize( &the_timer->Ticker, adaptor );
the_timer->the_class = the_class;
the_timer->routine = routine;
the_timer->user_data = user_data;
the_timer->initial = interval;
the_timer->start_time = _Timer_Get_CPU_ticks( cpu );
if ( _Timer_Is_interval_class( the_class ) ) {
_Watchdog_Insert(
&cpu->Watchdog.Header[ PER_CPU_WATCHDOG_MONOTONIC ],
&the_timer->Ticker,
cpu->Watchdog.ticks + interval
);
} else {
_Watchdog_Insert(
&cpu->Watchdog.Header[ PER_CPU_WATCHDOG_REALTIME ],
&the_timer->Ticker,
_Watchdog_Realtime_from_seconds( interval )
);
}
_Timer_Release( cpu, &lock_context );
return RTEMS_SUCCESSFUL;
}
return RTEMS_INVALID_ID;
}
