support/xtime.h

   1 /* Support functionality for using time.
   2    Copyright (C) 2019-2020 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 #ifndef SUPPORT_TIME_H
  20 #define SUPPORT_TIME_H
  21
  22 #include <time.h>
  23
  24 __BEGIN_DECLS
  25
  26 /* The following functions call the corresponding libc functions and
  27    terminate the process on error.  */
  28
  29 void xclock_gettime (clockid_t clock, struct timespec *ts);
  30
  31 /* This helper can often simplify tests by avoiding an explicit
  32    variable declaration or allowing that declaration to be const. */
  33
  34 static inline struct timespec xclock_now (clockid_t clock)
  35 {
  36   struct timespec ts;
  37   xclock_gettime (clock, &ts);
  38   return ts;
  39 }
  40
  41 __END_DECLS
  42
  43 #endif /* SUPPORT_TIME_H */