blob: 541ef0b783faef1ef47b5433f41526dd05cce7a5 (
plain)
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
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* This file is part of libplacebo.
*
* libplacebo 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.
*
* libplacebo 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 libplacebo. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <time.h>
#include <stdint.h>
#include "os.h"
#ifdef PL_HAVE_WIN32
# include <windows.h>
# define PL_CLOCK_QPC
#elif defined(PL_HAVE_APPLE)
# include <Availability.h>
# if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200) || \
(defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 100000) || \
(defined(__TV_OS_VERSION_MIN_REQUIRED) && __TV_OS_VERSION_MIN_REQUIRED < 100000) || \
(defined(__WATCH_OS_VERSION_MIN_REQUIRED) && __WATCH_OS_VERSION_MIN_REQUIRED < 30000) || \
!defined(CLOCK_MONOTONIC_RAW)
# include <mach/mach_time.h>
# define PL_CLOCK_MACH
# else
# define PL_CLOCK_MONOTONIC_RAW
# endif
#elif defined(CLOCK_MONOTONIC_RAW)
# define PL_CLOCK_MONOTONIC_RAW
#elif defined(TIME_UTC)
# define PL_CLOCK_TIMESPEC_GET
#else
# warning "pl_clock not implemented for this platform!"
#endif
typedef uint64_t pl_clock_t;
static inline pl_clock_t pl_clock_now(void)
{
#if defined(PL_CLOCK_QPC)
LARGE_INTEGER counter;
QueryPerformanceCounter(&counter);
return counter.QuadPart;
#elif defined(PL_CLOCK_MACH)
return mach_absolute_time();
#else
struct timespec tp = { .tv_sec = 0, .tv_nsec = 0 };
#if defined(PL_CLOCK_MONOTONIC_RAW)
clock_gettime(CLOCK_MONOTONIC_RAW, &tp);
#elif defined(PL_CLOCK_TIMESPEC_GET)
timespec_get(&tp, TIME_UTC);
#endif
return tp.tv_sec * UINT64_C(1000000000) + tp.tv_nsec;
#endif
}
static inline double pl_clock_diff(pl_clock_t a, pl_clock_t b)
{
double frequency = 1e9;
#if defined(PL_CLOCK_QPC)
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
frequency = freq.QuadPart;
#elif defined(PL_CLOCK_MACH)
mach_timebase_info_data_t time_base;
if (mach_timebase_info(&time_base) != KERN_SUCCESS)
return 0;
frequency = (time_base.denom * 1e9) / time_base.numer;
#endif
if (b > a)
return (b - a) / -frequency;
else
return (a - b) / frequency;
}
|
