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Nobody is maintaining RISC OS code, so I'm removing it for now.

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This commit is contained in:
Sam Lantinga 2011-01-27 00:06:36 -08:00
parent 9b3ce56bfd
commit d06966d7f2
28 changed files with 4 additions and 5259 deletions
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248
src/timer/riscos/SDL_systimer.c
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@ -1,248 +0,0 @@
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2010 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_RISCOS
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "SDL_timer.h"
#include "../SDL_timer_c.h"
#if SDL_THREADS_DISABLED
/* Timer SDL_arraysize(Timer ),start/reset time */
static Uint32 timerStart;
/* Timer running function */
void RISCOS_CheckTimer();
#else
#include <pthread.h>
extern SDL_threadID riscos_main_thread;
extern int riscos_using_threads;
extern SDL_threadID SDL_ThreadID();
extern SDL_threadID SDL_EventThreadID(void);
#endif
extern void RISCOS_BackgroundTasks(void);
/* The first ticks value of the application */
clock_t start;
void
SDL_StartTicks(void)
{
/* Set first ticks value */
start = clock();
}
Uint32
SDL_GetTicks(void)
{
clock_t ticks;
ticks = clock() - start;
#if CLOCKS_PER_SEC == 1000
return (ticks);
#elif CLOCKS_PER_SEC == 100
return (ticks * 10);
#else
return ticks * (1000 / CLOCKS_PER_SEC);
#endif
}
void
SDL_Delay(Uint32 ms)
{
Uint32 now, then, elapsed;
#if !SDL_THREADS_DISABLED
int is_event_thread;
if (riscos_using_threads) {
is_event_thread = 0;
if (SDL_EventThreadID()) {
if (SDL_EventThreadID() == SDL_ThreadID())
is_event_thread = 1;
} else if (SDL_ThreadID() == riscos_main_thread)
is_event_thread = 1;
} else
is_event_thread = 1;
#endif
/*TODO: Next version of Unixlib may allow us to use usleep here */
/* for non event threads */
/* Set the timeout interval - Linux only needs to do this once */
then = SDL_GetTicks();
do {
/* Do background tasks required while sleeping as we are not multithreaded */
#if SDL_THREADS_DISABLED
RISCOS_BackgroundTasks();
#else
/* For threaded build only run background tasks in event thread */
if (is_event_thread)
RISCOS_BackgroundTasks();
#endif
/* Calculate the time interval left (in case of interrupt) */
now = SDL_GetTicks();
elapsed = (now - then);
then = now;
if (elapsed >= ms) {
break;
}
ms -= elapsed;
#if !SDL_THREADS_DISABLED
/* Need to yield to let other threads have a go */
if (riscos_using_threads)
pthread_yield();
#endif
} while (1);
}
#if SDL_THREADS_DISABLED
/* Non-threaded version of timer */
int
SDL_SYS_TimerInit(void)
{
return (0);
}
void
SDL_SYS_TimerQuit(void)
{
SDL_SetTimer(0, NULL);
}
int
SDL_SYS_StartTimer(void)
{
timerStart = SDL_GetTicks();
return (0);
}
void
SDL_SYS_StopTimer(void)
{
/* Don't need to do anything as we use SDL_timer_running
to detect if we need to check the timer */
}
void
RISCOS_CheckTimer()
{
if (SDL_timer_running
&& SDL_GetTicks() - timerStart >= SDL_alarm_interval) {
Uint32 ms;
ms = SDL_alarm_callback(SDL_alarm_interval);
if (ms != SDL_alarm_interval) {
if (ms) {
SDL_alarm_interval = ROUND_RESOLUTION(ms);
} else {
SDL_alarm_interval = 0;
SDL_timer_running = 0;
}
}
if (SDL_alarm_interval)
timerStart = SDL_GetTicks();
}
}
#else
/* Threaded version of timer - based on code for linux */
#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: RISC OS uses threaded timer");
return (-1);
}
void
SDL_SYS_StopTimer(void)
{
return;
}
#endif /* SDL_THREADS_DISABLED */
#endif /* SDL_TIMER_RISCOS */
/* vi: set ts=4 sw=4 expandtab: */