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/**
* @file
*
* @brief Retrieves the Specified Clock Time
* @ingroup POSIXAPI
*/
/*
* 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 <time.h>
#include <errno.h>
#include <rtems/score/todimpl.h>
#include <rtems/seterr.h>
/*
* 14.2.1 Clocks, P1003.1b-1993, p. 263
*/
int clock_gettime(
clockid_t clock_id,
struct timespec *tp
)
{
if ( !tp )
rtems_set_errno_and_return_minus_one( EINVAL );
if ( clock_id == CLOCK_REALTIME ) {
_TOD_Get_as_timespec(tp);
return 0;
}
#ifdef CLOCK_MONOTONIC
if ( clock_id == CLOCK_MONOTONIC ) {
_TOD_Get_zero_based_uptime_as_timespec( tp );
return 0;
}
#endif
#ifdef _POSIX_CPUTIME
if ( clock_id == CLOCK_PROCESS_CPUTIME_ID ) {
_TOD_Get_zero_based_uptime_as_timespec( tp );
return 0;
}
#endif
#ifdef _POSIX_THREAD_CPUTIME
if ( clock_id == CLOCK_THREAD_CPUTIME_ID )
rtems_set_errno_and_return_minus_one( ENOSYS );
#endif
rtems_set_errno_and_return_minus_one( EINVAL );
return 0;
}
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