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#if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED)
25
26#include "SDL_timer.h"
27#include "../SDL_timer_c.h"
28
29void SDL_StartTicks(void)
30{
31}
32
33Uint32 SDL_GetTicks (void)
34{
35	SDL_Unsupported();
36	return 0;
37}
38
39void SDL_Delay (Uint32 ms)
40{
41	SDL_Unsupported();
42}
43
44#include "SDL_thread.h"
45
46/* Data to handle a single periodic alarm */
47static int timer_alive = 0;
48static SDL_Thread *timer = NULL;
49
50static int RunTimer(void *unused)
51{
52	while ( timer_alive ) {
53		if ( SDL_timer_running ) {
54			SDL_ThreadedTimerCheck();
55		}
56		SDL_Delay(1);
57	}
58	return(0);
59}
60
61/* This is only called if the event thread is not running */
62int SDL_SYS_TimerInit(void)
63{
64	timer_alive = 1;
65	timer = SDL_CreateThread(RunTimer, NULL);
66	if ( timer == NULL )
67		return(-1);
68	return(SDL_SetTimerThreaded(1));
69}
70
71void SDL_SYS_TimerQuit(void)
72{
73	timer_alive = 0;
74	if ( timer ) {
75		SDL_WaitThread(timer, NULL);
76		timer = NULL;
77	}
78}
79
80int SDL_SYS_StartTimer(void)
81{
82	SDL_SetError("Internal logic error: threaded timer in use");
83	return(-1);
84}
85
86void SDL_SYS_StopTimer(void)
87{
88	return;
89}
90
91#endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */
92