1  /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <string.h>
      19  #include <time.h>
      20  #include <sys/time.h>
      21  
      22  /* Get the current time of day, putting it into *TV.
      23     If *TZ is not NULL, clear it.
      24     Returns 0 on success, -1 on errors.  */
      25  int
      26  ___gettimeofday (struct timeval *restrict tv, void *restrict tz)
      27  {
      28    if (__glibc_unlikely (tz != 0))
      29      memset (tz, 0, sizeof (struct timezone));
      30  
      31    struct timespec ts;
      32    if (__clock_gettime (CLOCK_REALTIME, &ts))
      33      return -1;
      34  
      35    TIMESPEC_TO_TIMEVAL (tv, &ts);
      36    return 0;
      37  }
      38  /* Define to override default symbol version.  */
      39  #ifndef SET_VERSION
      40  strong_alias (___gettimeofday, __gettimeofday)
      41  weak_alias (___gettimeofday, gettimeofday)
      42  #endif