1 /*
2 * Copyright © 2015 Kazunobu Kuriyama <kazunobu.kuriyama@nifty.com>
3 * Ran Benita <ran234@gmail.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25 #include "config.h"
26
27 #include <assert.h>
28 #include <stdio.h>
29
30 #include "bench.h"
31 #include "../src/utils.h"
32
33 #ifndef _MSC_VER
34 #include <sys/time.h>
35 #else
36 #include <windows.h>
37 #include <stdint.h>
38
39 struct timeval {
40 long tv_sec, tv_usec;
41 };
42
43 static int
gettimeofday(struct timeval * tv,void * unused)44 gettimeofday(struct timeval *tv, void *unused)
45 {
46 static const uint64_t EPOCH = ((uint64_t) 116444736000000000ULL);
47
48 SYSTEMTIME system_time;
49 FILETIME file_time;
50 uint64_t t;
51
52 GetSystemTime(&system_time);
53 SystemTimeToFileTime(&system_time, &file_time);
54 t = (uint64_t) file_time.dwLowDateTime;
55 t += ((uint64_t) file_time.dwHighDateTime) << 32;
56
57 tv->tv_sec = (long) ((t - EPOCH) / 10000000L);
58 tv->tv_usec = (long) (system_time.wMilliseconds * 1000);
59 return 0;
60 }
61 #endif
62
63 void
bench_start(struct bench * bench)64 bench_start(struct bench *bench)
65 {
66 struct timeval val;
67 (void) gettimeofday(&val, NULL);
68 bench->start = (struct bench_time) {
69 .seconds = val.tv_sec,
70 .microseconds = val.tv_usec,
71 };
72 }
73
74 void
bench_stop(struct bench * bench)75 bench_stop(struct bench *bench)
76 {
77 struct timeval val;
78 (void) gettimeofday(&val, NULL);
79 bench->stop = (struct bench_time) {
80 .seconds = val.tv_sec,
81 .microseconds = val.tv_usec,
82 };
83 }
84
85 void
bench_elapsed(const struct bench * bench,struct bench_time * result)86 bench_elapsed(const struct bench *bench, struct bench_time *result)
87 {
88 result->seconds = bench->stop.seconds - bench->start.seconds;
89 result->microseconds = bench->stop.microseconds - bench->start.microseconds;
90 if (result->microseconds < 0) {
91 result->microseconds += 1000000;
92 result->seconds--;
93 }
94 }
95
96 char *
bench_elapsed_str(const struct bench * bench)97 bench_elapsed_str(const struct bench *bench)
98 {
99 struct bench_time elapsed;
100 char *buf;
101 int ret;
102
103 bench_elapsed(bench, &elapsed);
104 ret = asprintf(&buf, "%ld.%06ld", elapsed.seconds, elapsed.microseconds);
105 assert(ret >= 0);
106
107 return buf;
108 }
109