[sdl_omap.git] / src / timer / dummy / SDL_systimer.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED)

#include "SDL_timer.h"
#include "../SDL_timer_c.h"

void SDL_StartTicks(void)
{
}

Uint32 SDL_GetTicks (void)
{
	SDL_Unsupported();
	return 0;
}

void SDL_Delay (Uint32 ms)
{
	SDL_Unsupported();
}

#include "SDL_thread.h"

/* Data to handle a single periodic alarm */
static int timer_alive = 0;
static SDL_Thread *timer = NULL;

static int RunTimer(void *unused)
{
	while ( timer_alive ) {
		if ( SDL_timer_running ) {
			SDL_ThreadedTimerCheck();
		}
		SDL_Delay(1);
	}
	return(0);
}

/* This is only called if the event thread is not running */
int SDL_SYS_TimerInit(void)
{
	timer_alive = 1;
	timer = SDL_CreateThread(RunTimer, NULL);
	if ( timer == NULL )
		return(-1);
	return(SDL_SetTimerThreaded(1));
}

void SDL_SYS_TimerQuit(void)
{
	timer_alive = 0;
	if ( timer ) {
		SDL_WaitThread(timer, NULL);
		timer = NULL;
	}
}

int SDL_SYS_StartTimer(void)
{
	SDL_SetError("Internal logic error: threaded timer in use");
	return(-1);
}

void SDL_SYS_StopTimer(void)
{
	return;
}

#endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */
Commit	Line	Data
e14743d1	1	/*
	2	SDL - Simple DirectMedia Layer
	3	Copyright (C) 1997-2009 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
	29	void SDL_StartTicks(void)
	30	{
	31	}
	32
	33	Uint32 SDL_GetTicks (void)
	34	{
	35	SDL_Unsupported();
	36	return 0;
	37	}
	38
	39	void SDL_Delay (Uint32 ms)
	40	{
	41	SDL_Unsupported();
	42	}
	43
	44	#include "SDL_thread.h"
	45
	46	/* Data to handle a single periodic alarm */
	47	static int timer_alive = 0;
	48	static SDL_Thread *timer = NULL;
	49
	50	static 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 */
	62	int 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
71	void SDL_SYS_TimerQuit(void)
72	{
73	timer_alive = 0;
74	if ( timer ) {
75	SDL_WaitThread(timer, NULL);
76	timer = NULL;
77	}
78	}
79
80	int SDL_SYS_StartTimer(void)
81	{
82	SDL_SetError("Internal logic error: threaded timer in use");
83	return(-1);
84	}
85
86	void SDL_SYS_StopTimer(void)
87	{
88	return;
89	}
90
91	#endif /* SDL_TIMER_DUMMY \|\| SDL_TIMERS_DISABLED */