kc3-lang/gnulib/lib/timespec_getres.c

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• lib/timespec_getres.c

• /* Get resolution of a time base.
     Copyright 2021-2023 Free Software Foundation, Inc.
  
     This file is free software: you can redistribute it and/or modify
     it under the terms of the GNU Lesser General Public License as
     published by the Free Software Foundation, either version 3 of the
     License, or (at your option) any later version.
  
     This file is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  #include <time.h>
  
  #include "timespec.h"
  
  /* Set TS to resolution of time base BASE.
     Return BASE if successful, 0 otherwise.  */
  int
  timespec_getres (struct timespec *ts, int base)
  {
    if (base == TIME_UTC)
      {
  #if defined CLOCK_REALTIME && HAVE_CLOCK_GETRES
        clock_getres (CLOCK_REALTIME, ts);
  #else
        long int res = gettime_res ();
        ts->tv_sec = res / TIMESPEC_HZ;
        ts->tv_nsec = res % TIMESPEC_HZ;
  #endif
        return base;
      }
    return 0;
  }
  

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