glibc/benchtests/bench-timing.h
H.J. Lu e52434a2e4 benchtests: Restore the clock_gettime option
commit 7621e38bf3
Author: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Date:   Tue Jan 29 17:43:45 2019 +0000

    Add generic hp-timing support

removed the clock_gettime option.  Restore the clock_gettime option for
some x86 CPUs on which value from RDTSC may not be incremented at a fixed
rate.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-06-05 09:48:07 -07:00

40 lines
1.3 KiB
C

/* Define timing macros.
Copyright (C) 2013-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library 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 2.1 of the License, or (at your option) any later version.
The GNU C Library 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 the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#undef attribute_hidden
#define attribute_hidden
#ifdef USE_CLOCK_GETTIME
# include <sysdeps/generic/hp-timing.h>
#else
# include <hp-timing.h>
#endif
#include <stdint.h>
#define GL(x) _##x
#define GLRO(x) _##x
typedef hp_timing_t timing_t;
#define TIMING_TYPE "hp_timing"
#define TIMING_NOW(var) HP_TIMING_NOW (var)
#define TIMING_DIFF(diff, start, end) HP_TIMING_DIFF ((diff), (start), (end))
#define TIMING_ACCUM(sum, diff) HP_TIMING_ACCUM_NT ((sum), (diff))
#define TIMING_PRINT_MEAN(d_total_s, d_iters) \
printf ("\t%g", (d_total_s) / (d_iters))