1/*
2    SDL - Simple DirectMedia Layer
3    Copyright (C) 1997-2012 Sam Lantinga
4
5    This library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9
10    This library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14
15    You should have received a copy of the GNU Lesser General Public
16    License along with this library; if not, write to the Free Software
17    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18
19    Sam Lantinga
20    slouken@libsdl.org
21*/
22#include "SDL_config.h"
23
24#ifdef SDL_TIMER_BEOS
25
26#include <be/kernel/OS.h>
27
28#include "SDL_thread.h"
29#include "SDL_timer.h"
30#include "../SDL_timer_c.h"
31
32static bigtime_t start;
33
34void SDL_StartTicks(void)
35{
36	/* Set first ticks value */
37	start = system_time();
38}
39
40Uint32 SDL_GetTicks(void)
41{
42	return((system_time()-start)/1000);
43}
44
45void SDL_Delay(Uint32 ms)
46{
47	snooze(ms*1000);
48}
49
50/* Data to handle a single periodic alarm */
51static int timer_alive = 0;
52static SDL_Thread *timer = NULL;
53
54static int RunTimer(void *unused)
55{
56	while ( timer_alive ) {
57		if ( SDL_timer_running ) {
58			SDL_ThreadedTimerCheck();
59		}
60		SDL_Delay(10);
61	}
62	return(0);
63}
64
65/* This is only called if the event thread is not running */
66int SDL_SYS_TimerInit(void)
67{
68	timer_alive = 1;
69	timer = SDL_CreateThread(RunTimer, NULL);
70	if ( timer == NULL )
71		return(-1);
72	return(SDL_SetTimerThreaded(1));
73}
74
75void SDL_SYS_TimerQuit(void)
76{
77	timer_alive = 0;
78	if ( timer ) {
79		SDL_WaitThread(timer, NULL);
80		timer = NULL;
81	}
82}
83
84int SDL_SYS_StartTimer(void)
85{
86	SDL_SetError("Internal logic error: BeOS uses threaded timer");
87	return(-1);
88}
89
90void SDL_SYS_StopTimer(void)
91{
92	return;
93}
94
95#endif /* SDL_TIMER_BEOS */
96