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43fe811b | 1 | /* Define timing macros. |
bfff8b1b | 2 | Copyright (C) 2013-2017 Free Software Foundation, Inc. |
43fe811b SP |
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 | |
43fe811b SP |
25 | typedef hp_timing_t timing_t; |
26 | ||
cb5e4aad SP |
27 | # define TIMING_TYPE "hp_timing" |
28 | ||
428dd03f | 29 | # define TIMING_INIT(res) ({ (res) = 1; }) |
43fe811b SP |
30 | |
31 | # define TIMING_NOW(var) HP_TIMING_NOW (var) | |
32 | # define TIMING_DIFF(diff, start, end) HP_TIMING_DIFF ((diff), (start), (end)) | |
33 | # define TIMING_ACCUM(sum, diff) HP_TIMING_ACCUM_NT ((sum), (diff)) | |
34 | ||
43fe811b | 35 | #else |
e8470ea2 SE |
36 | |
37 | #include <time.h> | |
43fe811b SP |
38 | typedef uint64_t timing_t; |
39 | ||
cb5e4aad SP |
40 | # define TIMING_TYPE "clock_gettime" |
41 | ||
b987c776 WN |
42 | /* Measure the resolution of the clock so we can scale the number of |
43 | benchmark iterations by this value. */ | |
44 | # define TIMING_INIT(res) \ | |
43fe811b SP |
45 | ({ \ |
46 | struct timespec start; \ | |
47 | clock_getres (CLOCK_PROCESS_CPUTIME_ID, &start); \ | |
b987c776 | 48 | (res) = start.tv_nsec; \ |
43fe811b SP |
49 | }) |
50 | ||
51 | # define TIMING_NOW(var) \ | |
52 | ({ \ | |
53 | struct timespec tv; \ | |
54 | clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &tv); \ | |
55 | (var) = (uint64_t) (tv.tv_nsec + (uint64_t) 1000000000 * tv.tv_sec); \ | |
56 | }) | |
57 | ||
58 | # define TIMING_DIFF(diff, start, end) (diff) = (end) - (start) | |
59 | # define TIMING_ACCUM(sum, diff) (sum) += (diff) | |
60 | ||
43fe811b | 61 | #endif |
44558701 WN |
62 | |
63 | #define TIMING_PRINT_MEAN(d_total_s, d_iters) \ | |
64 | printf ("\t%g", (d_total_s) / (d_iters)) |