sysdeps/generic/hp-timing.h

   1 /* High precision, low overhead timing functions.  Generic version.
   2    Copyright (C) 1998-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _HP_TIMING_H
  21 #define _HP_TIMING_H    1
  22
  23 /* There are no generic definitions for the times.  We could write something
  24    using the `gettimeofday' system call where available but the overhead of
  25    the system call might be too high.  */
  26
  27 /* Provide dummy definitions.  */
  28 #define HP_TIMING_AVAIL         (0)
  29 #define HP_SMALL_TIMING_AVAIL   (0)
  30 #define HP_TIMING_INLINE        (0)
  31 typedef int hp_timing_t;
  32 #define HP_TIMING_NOW(var)
  33 #define HP_TIMING_DIFF(Diff, Start, End)
  34 #define HP_TIMING_ACCUM_NT(Sum, Diff)
  35 #define HP_TIMING_PRINT(Buf, Len, Val)
  36
  37 /* Since this implementation is not available we tell the user about it.  */
  38 #define HP_TIMING_NONAVAIL      1
  39
  40 #endif  /* hp-timing.h */