1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/* 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(iters) \
({ \
HP_TIMING_DIFF_INIT(); \
(iters) = 1000; \
})
# 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 1000 times the resolution of the clock. So for a 1ns
resolution clock, we measure 1000 iterations of the function call at a
time. Measurements close to the minimum clock resolution won't make
much sense, but it's better than having nothing at all. */
# define TIMING_INIT(iters) \
({ \
struct timespec start; \
clock_getres (CLOCK_PROCESS_CPUTIME_ID, &start); \
(iters) = 1000 * 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
|
