/***************************************************************
  SYS-CLOCK_GETRES.C

       This file contains Linux/i386/ILP32 implementation of
       __cpu_sys_clock_getres().

       PART OF : CPU - library .

       USAGE   : Internal only .

       Copyright (C) 2026  by Andrew V.Kosteltsev.
       All Rights Reserved.
 ***************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <time.h>

#include <libmcpu.h>
#include <cpu-sysdeps.h>
#include "cpu-time-linux.h"


__mpu_int64_t
__cpu_sys_clock_getres( __mpu_uint64_t clockid, struct __cpu_timespec *res )
{
  struct timespec ts;
  clockid_t       host_clockid;
  int             error;

  error = __cpu_clockid_to_host( clockid, &host_clockid );
  if( error ) return( -(__mpu_int64_t)error );

  if( clock_getres( host_clockid, res ? &ts : (struct timespec *)0 ) < 0 )
    return( -(__mpu_int64_t)__cpu_errno_from_host( errno ) );

  if( res )
  {
    error = __cpu_timespec_from_host( res, &ts );
    if( error ) return( -(__mpu_int64_t)error );
  }

  return( 0 );

} /* End of __cpu_sys_clock_getres() */