SDL  2.0
SDL_systimer.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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 
29 static bigtime_t start;
30 static SDL_bool ticks_started = SDL_FALSE;
31 
32 void
33 SDL_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 
44 void
45 SDL_TicksQuit(void)
46 {
47  ticks_started = SDL_FALSE;
48 }
49 
50 Uint32
51 SDL_GetTicks(void)
52 {
53  if (!ticks_started) {
54  SDL_TicksInit();
55  }
56 
57  return ((system_time() - start) / 1000);
58 }
59 
60 Uint64
61 SDL_GetPerformanceCounter(void)
62 {
63  return system_time();
64 }
65 
66 Uint64
67 SDL_GetPerformanceFrequency(void)
68 {
69  return 1000000;
70 }
71 
72 void
73 SDL_Delay(Uint32 ms)
74 {
75  snooze(ms * 1000);
76 }
77 
78 #endif /* SDL_TIMER_HAIKU */
79 
80 /* vi: set ts=4 sw=4 expandtab: */