2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2009 Sam Lantinga
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.
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.
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
22 #include "SDL_config.h"
24 /* Useful functions and variables from SDL_timer.c */
25 #include "SDL_timer.h"
27 #define ROUND_RESOLUTION(X) \
28 (((X+TIMER_RESOLUTION-1)/TIMER_RESOLUTION)*TIMER_RESOLUTION)
30 extern int SDL_timer_started;
31 extern int SDL_timer_running;
33 /* Data to handle a single periodic alarm */
34 extern Uint32 SDL_alarm_interval;
35 extern SDL_TimerCallback SDL_alarm_callback;
37 /* Set whether or not the timer should use a thread.
38 This should be called while the timer subsystem is running.
40 extern int SDL_SetTimerThreaded(int value);
42 extern int SDL_TimerInit(void);
43 extern void SDL_TimerQuit(void);
45 /* This function is called from the SDL event thread if it is available */
46 extern void SDL_ThreadedTimerCheck(void);