/*
 *  Clock Manager
 *
 *  COPYRIGHT (c) 1989-2008.
 *  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/clock.h>
#include <rtems/score/isr.h>
#include <rtems/score/thread.h>
#include <rtems/score/tod.h>
#include <rtems/score/watchdog.h>

/*PAGE
 *
 *  rtems_clock_get
 *
 *  This directive returns the current date and time.  If the time has
 *  not been set by a tm_set then an error is returned.
 *
 *  Input parameters:
 *    option      - which value to return
 *    time_buffer - pointer to output buffer (a time and date structure
 *                  or an interval)
 *
 *  Output parameters:
 *    time_buffer      - output filled in
 *    RTEMS_SUCCESSFUL - if successful
 *    error code       - if unsuccessful
 */

rtems_status_code rtems_clock_get(
  rtems_clock_get_options  option,
  void                    *time_buffer
)
{
  if ( !time_buffer )
    return RTEMS_INVALID_ADDRESS;

  switch ( option ) {
    case RTEMS_CLOCK_GET_TOD:
      return rtems_clock_get_tod( (rtems_time_of_day *)time_buffer ); 

    case RTEMS_CLOCK_GET_SECONDS_SINCE_EPOCH:
      return rtems_clock_get_seconds_since_epoch((rtems_interval *)time_buffer);

    case RTEMS_CLOCK_GET_TICKS_SINCE_BOOT: {
      rtems_interval *interval = (rtems_interval *)time_buffer;
  
      *interval = rtems_clock_get_ticks_since_boot();
      return RTEMS_SUCCESSFUL;
    }
    case RTEMS_CLOCK_GET_TICKS_PER_SECOND: {
      rtems_interval *interval = (rtems_interval *)time_buffer;
  
      *interval = rtems_clock_get_ticks_per_second();
      return RTEMS_SUCCESSFUL;
    }
    case RTEMS_CLOCK_GET_TIME_VALUE:
      return rtems_clock_get_tod_timeval( (struct timeval *)time_buffer );

    default:
      break;
  }

  return RTEMS_INVALID_NUMBER;

}