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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* Copyright (C) 2003 Jon Kinsey <jonkinsey@gmail.com>
* Copyright (C) 2004-2019 the AUTHORS
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* $Id: timer.c,v 1.21 2019/01/05 15:15:36 plm Exp $
*/
#include "config.h"
#include <time.h>
#if !HAVE_CLOCK_GETTIME
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#endif
#include "backgammon.h"
#ifdef WIN32
#include <windows.h>
static double perFreq = 0;
static int
setup_timer()
{
LARGE_INTEGER freq;
if (!QueryPerformanceFrequency(&freq)) { /* Timer not supported */
return 0;
} else {
perFreq = ((double) freq.QuadPart) / 1000;
return 1;
}
}
double
get_time()
{ /* Return elapsed time in milliseconds */
LARGE_INTEGER timer;
if (!perFreq) {
if (!setup_timer())
return clock() / 1000.0;
}
QueryPerformanceCounter(&timer);
return timer.QuadPart / perFreq;
}
#elif HAVE_CLOCK_GETTIME
extern double
get_time(void)
{ /* Return elapsed time in milliseconds */
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return 1000.0 * (double) ts.tv_sec + 0.000001 * (double) ts.tv_nsec;
}
#else
extern double
get_time(void)
{ /* Return elapsed time in milliseconds */
struct timeval tv;
gettimeofday(&tv, NULL);
return 1000.0 * tv.tv_sec + 0.001 * tv.tv_usec;
}
#endif
|
