101 lines
1.4 KiB
C++
101 lines
1.4 KiB
C++
/*
|
|
* \brief Genode-specific timer backend
|
|
* \author Christian Prochaska
|
|
* \date 2012-03-13
|
|
*
|
|
* based on the dummy SDL timer
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2012-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
extern "C" {
|
|
|
|
#include <unistd.h>
|
|
|
|
#include "SDL_config.h"
|
|
|
|
#include "SDL_timer.h"
|
|
#include "SDL_timer_c.h"
|
|
|
|
|
|
static Uint32 jiffies = 0;
|
|
|
|
|
|
void SDL_StartTicks(void)
|
|
{
|
|
}
|
|
|
|
|
|
Uint32 SDL_GetTicks (void)
|
|
{
|
|
return jiffies;
|
|
}
|
|
|
|
|
|
void SDL_Delay (Uint32 ms)
|
|
{
|
|
usleep(ms*1000);
|
|
}
|
|
|
|
|
|
#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);
|
|
jiffies++;
|
|
}
|
|
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;
|
|
}
|
|
|
|
}
|