time/clock_getres.c

   1 /* Get the resolution of a clock.  Stub version.
   2    Copyright (C) 1999-2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <time.h>
  21 #include <shlib-compat.h>
  22
  23 /* Get resolution of clock.  */
  24 int
  25 __clock_getres (clockid_t clock_id, struct timespec *res)
  26 {
  27   __set_errno (ENOSYS);
  28   return -1;
  29 }
  30
  31 versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
  32 /* clock_getres moved to libc in version 2.17;
  33    old binaries may expect the symbol version it had in librt.  */
  34 #if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
  35 strong_alias (__clock_getres, __clock_getres_2);
  36 compat_symbol (libc, __clock_getres_2, clock_getres, GLIBC_2_2);
  37 #endif
  38
  39 stub_warning (clock_getres)