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/*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <assert.h>
#include <time.h>
#include <errno.h>
#include <rtems/system.h>
#include <rtems/score/isr.h>
#include <rtems/score/thread.h>
#include <rtems/score/tod.h>
#include <rtems/seterr.h>
#include <rtems/posix/time.h>
/*PAGE
*
* 14.2.1 Clocks, P1003.1b-1993, p. 263
*/
int clock_gettime(
clockid_t clock_id,
struct timespec *tp
)
{
ISR_Level level;
time_t seconds;
long ticks;
if ( !tp )
rtems_set_errno_and_return_minus_one( EINVAL );
switch ( clock_id ) {
case CLOCK_REALTIME:
_ISR_Disable( level );
seconds = _TOD_Seconds_since_epoch;
ticks = _TOD_Current.ticks;
_ISR_Enable( level );
tp->tv_sec = seconds + POSIX_TIME_SECONDS_1970_THROUGH_1988;
tp->tv_nsec = ticks * _TOD_Microseconds_per_tick *
TOD_NANOSECONDS_PER_MICROSECOND;
break;
#ifdef _POSIX_CPUTIME
case CLOCK_PROCESS_CPUTIME:
/* don't base this on _Watchdog_Ticks_since_boot--duration is too short*/
return POSIX_NOT_IMPLEMENTED();
break;
#endif
#ifdef _POSIX_THREAD_CPUTIME
case CLOCK_THREAD_CPUTIME:
return POSIX_NOT_IMPLEMENTED();
break;
#endif
default:
rtems_set_errno_and_return_minus_one( EINVAL );
}
return 0;
}
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