diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/timer/riscos/SDL_systimer.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/timer/riscos/SDL_systimer.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/distrib/sdl-1.2.12/src/timer/riscos/SDL_systimer.c b/distrib/sdl-1.2.12/src/timer/riscos/SDL_systimer.c deleted file mode 100644 index b782f39..0000000 --- a/distrib/sdl-1.2.12/src/timer/riscos/SDL_systimer.c +++ /dev/null @@ -1,233 +0,0 @@ -/* - 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_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 Uint32 riscos_main_thread; -extern int riscos_using_threads; -extern Uint32 SDL_ThreadID(); -extern Uint32 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 */ |