[thirdparty/glibc.git] / benchtests / bench-timing.h

/* Define timing macros.
   Copyright (C) 2013 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
   <http://www.gnu.org/licenses/>.  */

#include <hp-timing.h>
#include <stdint.h>

#if HP_TIMING_AVAIL && !defined USE_CLOCK_GETTIME
# define GL(x) _##x
# define GLRO(x) _##x
hp_timing_t _dl_hp_timing_overhead;
typedef hp_timing_t timing_t;

# define TIMING_INIT(res) \
({									      \
  HP_TIMING_DIFF_INIT();						      \
  (res) = 1;							      \
})

# 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_STATS(func, d_total_s, d_iters, d_total_i, max, min) \
  printf ("%s: ITERS:%g: TOTAL:%gMcy, MAX:%gcy, MIN:%gcy, %g calls/Mcy\n",    \
	  (func), (d_total_i), (d_total_s) * 1e-6, (max) / (d_iters),	      \
	  (min) / (d_iters), 1e6 * (d_total_i) / (d_total_s));

#else
typedef uint64_t timing_t;

/* Measure the resolution of the clock so we can scale the number of
   benchmark iterations by this value.  */
# define TIMING_INIT(res) \
({									      \
  struct timespec start;						      \
  clock_getres (CLOCK_PROCESS_CPUTIME_ID, &start);			      \
  (res) = start.tv_nsec;					      \
})

# define TIMING_NOW(var) \
({									      \
  struct timespec tv;							      \
  clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &tv);			      \
  (var) = (uint64_t) (tv.tv_nsec + (uint64_t) 1000000000 * tv.tv_sec);	      \
})

# define TIMING_DIFF(diff, start, end) (diff) = (end) - (start)
# define TIMING_ACCUM(sum, diff) (sum) += (diff)

# define TIMING_PRINT_STATS(func, d_total_s, d_iters, d_total_i, max, min) \
  printf ("%s: ITERS:%g: TOTAL:%gs, MAX:%gns, MIN:%gns, %g iter/s\n",	      \
	  (func), (d_total_i), (d_total_s) * 1e-9, (max) / (d_iters),		      \
	  (min) / (d_iters), 1e9 * (d_total_i) / (d_total_s))

#endif

#define TIMING_PRINT_MEAN(d_total_s, d_iters) \
  printf ("\t%g", (d_total_s) / (d_iters))
Commit	Line	Data
43fe811b SP	1	/* Define timing macros.
	2	Copyright (C) 2013 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	<http://www.gnu.org/licenses/>. */
	18
	19	#include <hp-timing.h>
	20	#include <stdint.h>
	21
	22	#if HP_TIMING_AVAIL && !defined USE_CLOCK_GETTIME
	23	# define GL(x) _##x
	24	# define GLRO(x) _##x
	25	hp_timing_t _dl_hp_timing_overhead;
	26	typedef hp_timing_t timing_t;
	27
b987c776	28	# define TIMING_INIT(res) \
43fe811b SP	29	({ \
43fe811b SP	30	HP_TIMING_DIFF_INIT(); \
b987c776	31	(res) = 1; \
43fe811b SP	32	})
	33
	34	# define TIMING_NOW(var) HP_TIMING_NOW (var)
	35	# define TIMING_DIFF(diff, start, end) HP_TIMING_DIFF ((diff), (start), (end))
	36	# define TIMING_ACCUM(sum, diff) HP_TIMING_ACCUM_NT ((sum), (diff))
	37
	38	# define TIMING_PRINT_STATS(func, d_total_s, d_iters, d_total_i, max, min) \
	39	printf ("%s: ITERS:%g: TOTAL:%gMcy, MAX:%gcy, MIN:%gcy, %g calls/Mcy\n", \
	40	(func), (d_total_i), (d_total_s) * 1e-6, (max) / (d_iters), \
	41	(min) / (d_iters), 1e6 * (d_total_i) / (d_total_s));
	42
	43	#else
	44	typedef uint64_t timing_t;
	45
b987c776 WN	46	/* Measure the resolution of the clock so we can scale the number of
	47	benchmark iterations by this value. */
	48	# define TIMING_INIT(res) \
43fe811b SP	49	({ \
	50	struct timespec start; \
	51	clock_getres (CLOCK_PROCESS_CPUTIME_ID, &start); \
b987c776	52	(res) = start.tv_nsec; \
43fe811b SP	53	})
	54
	55	# define TIMING_NOW(var) \
	56	({ \
	57	struct timespec tv; \
	58	clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &tv); \
	59	(var) = (uint64_t) (tv.tv_nsec + (uint64_t) 1000000000 * tv.tv_sec); \
	60	})
	61
	62	# define TIMING_DIFF(diff, start, end) (diff) = (end) - (start)
	63	# define TIMING_ACCUM(sum, diff) (sum) += (diff)
	64
	65	# define TIMING_PRINT_STATS(func, d_total_s, d_iters, d_total_i, max, min) \
	66	printf ("%s: ITERS:%g: TOTAL:%gs, MAX:%gns, MIN:%gns, %g iter/s\n", \
	67	(func), (d_total_i), (d_total_s) * 1e-9, (max) / (d_iters), \
	68	(min) / (d_iters), 1e9 * (d_total_i) / (d_total_s))
	69
	70	#endif
44558701 WN	71
	72	#define TIMING_PRINT_MEAN(d_total_s, d_iters) \
	73	printf ("\t%g", (d_total_s) / (d_iters))