/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 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

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@devolution.com

*/

#ifdef SAVE_RCSID

static char rcsid =

"@(#) $Id$";

#endif

#include <be/kernel/OS.h>

#include "SDL_thread.h"

#include "SDL_timer.h"

#include "SDL_error.h"

#include "SDL_timer_c.h"

static bigtime_t start;

void SDL_StartTicks(void)

{

/* Set first ticks value */

start = system_time();

}

Uint32 SDL_GetTicks(void)

{

return((system_time()-start)/1000);

}

void SDL_Delay(Uint32 ms)

{

snooze(ms*1000);

}

/* 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: BeOS uses threaded timer");

return(-1);

}

void SDL_SYS_StopTimer(void)

{

return;

}