104 lines
1.5 KiB
C++
104 lines
1.5 KiB
C++
/*
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* \brief Genode-specific timer backend
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* \author Christian Prochaska
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* \date 2012-03-13
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*
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* based on the dummy SDL timer
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*/
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/*
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* Copyright (C) 2012-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#include <timer_session/connection.h>
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extern "C" {
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#include <unistd.h>
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#include "SDL_config.h"
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#include "SDL_timer.h"
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#include "SDL_timer_c.h"
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static unsigned long start_ms = 0;
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static Timer::Connection _timer;
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void SDL_StartTicks(void)
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{
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start_ms = _timer.elapsed_ms();
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}
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Uint32 SDL_GetTicks (void)
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{
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return _timer.elapsed_ms() - start_ms;
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}
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void SDL_Delay (Uint32 ms)
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{
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_timer.msleep(ms);
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}
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#include "SDL_thread.h"
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/* Data to handle a single periodic alarm */
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static int timer_alive = 0;
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static SDL_Thread *timer = NULL;
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static int RunTimer(void *unused)
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{
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while ( timer_alive ) {
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if ( SDL_timer_running ) {
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SDL_ThreadedTimerCheck();
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}
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SDL_Delay(1);
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}
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return(0);
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}
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/* This is only called if the event thread is not running */
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int SDL_SYS_TimerInit(void)
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{
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timer_alive = 1;
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timer = SDL_CreateThread(RunTimer, NULL);
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if ( timer == NULL )
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return(-1);
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return(SDL_SetTimerThreaded(1));
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}
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void SDL_SYS_TimerQuit(void)
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{
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timer_alive = 0;
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if ( timer ) {
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SDL_WaitThread(timer, NULL);
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timer = NULL;
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}
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}
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int SDL_SYS_StartTimer(void)
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{
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SDL_SetError("Internal logic error: threaded timer in use");
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return(-1);
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}
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void SDL_SYS_StopTimer(void)
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{
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return;
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}
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}
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