Atlas - SDL_systimer.c
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "../../SDL_internal.h"
22
23#ifdef SDL_TIMER_HAIKU
24
25#include <kernel/OS.h>
26
27#include "SDL_timer.h"
28
29static bigtime_t start;
30static SDL_bool ticks_started = SDL_FALSE;
31
32void
33SDL_TicksInit(void)
34{
35    if (ticks_started) {
36        return;
37    }
38    ticks_started = SDL_TRUE;
39
40    /* Set first ticks value */
41    start = system_time();
42}
43
44void
45SDL_TicksQuit(void)
46{
47    ticks_started = SDL_FALSE;
48}
49
50Uint32
51SDL_GetTicks(void)
52{
53    if (!ticks_started) {
54        SDL_TicksInit();
55    }
56
57    return ((system_time() - start) / 1000);
58}
59
60Uint64
61SDL_GetPerformanceCounter(void)
62{
63    return system_time();
64}
65
66Uint64
67SDL_GetPerformanceFrequency(void)
68{
69    return 1000000;
70}
71
72void
73SDL_Delay(Uint32 ms)
74{
75    snooze(ms * 1000);
76}
77
78#endif /* SDL_TIMER_HAIKU */
79
80/* vi: set ts=4 sw=4 expandtab: */
81
[FILE END]
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