/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 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"

#ifdef SDL_TIMER_DC

#include <kos.h>

#include "SDL_thread.h"

#include "SDL_timer.h"

#include "../SDL_timer_c.h"

static unsigned start;

/* 

	jif =  ms * HZ /1000

	ms  = jif * 1000/HZ

*/

void SDL_StartTicks(void)

{

	/* Set first ticks value */

	start = jiffies;

}

Uint32 SDL_GetTicks(void)

{

	return((jiffies-start)*1000/HZ);

}

void SDL_Delay(Uint32 ms)

{

	thd_sleep(ms);

}

/* 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(10);

	}

	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: DC uses threaded timer");

	return(-1);

}

void SDL_SYS_StopTimer(void)

{

	return;

}

#endif /* SDL_TIMER_DC */