diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/timer/unix/SDL_systimer.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/timer/unix/SDL_systimer.c | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/distrib/sdl-1.2.12/src/timer/unix/SDL_systimer.c b/distrib/sdl-1.2.12/src/timer/unix/SDL_systimer.c deleted file mode 100644 index 58b53ed..0000000 --- a/distrib/sdl-1.2.12/src/timer/unix/SDL_systimer.c +++ /dev/null @@ -1,240 +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_UNIX - -#include <stdio.h> -#include <sys/time.h> -#include <signal.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> - -#include "SDL_timer.h" -#include "../SDL_timer_c.h" - -/* The clock_gettime provides monotonous time, so we should use it if - it's available. The clock_gettime function is behind ifdef - for __USE_POSIX199309 - Tommi Kyntola (tommi.kyntola@ray.fi) 27/09/2005 -*/ -#if HAVE_NANOSLEEP || HAVE_CLOCK_GETTIME -#include <time.h> -#endif - -#if SDL_THREAD_PTH -#include <pth.h> -#endif - -#if SDL_THREADS_DISABLED -#define USE_ITIMER -#endif - -/* The first ticks value of the application */ -#ifdef HAVE_CLOCK_GETTIME -static struct timespec start; -#else -static struct timeval start; -#endif /* HAVE_CLOCK_GETTIME */ - - -void SDL_StartTicks(void) -{ - /* Set first ticks value */ -#if HAVE_CLOCK_GETTIME - clock_gettime(CLOCK_MONOTONIC,&start); -#else - gettimeofday(&start, NULL); -#endif -} - -Uint32 SDL_GetTicks (void) -{ -#if HAVE_CLOCK_GETTIME - Uint32 ticks; - struct timespec now; - clock_gettime(CLOCK_MONOTONIC,&now); - ticks=(now.tv_sec-start.tv_sec)*1000+(now.tv_nsec-start.tv_nsec)/1000000; - return(ticks); -#else - Uint32 ticks; - struct timeval now; - gettimeofday(&now, NULL); - ticks=(now.tv_sec-start.tv_sec)*1000+(now.tv_usec-start.tv_usec)/1000; - return(ticks); -#endif -} - -void SDL_Delay (Uint32 ms) -{ -#if SDL_THREAD_PTH - pth_time_t tv; - tv.tv_sec = ms/1000; - tv.tv_usec = (ms%1000)*1000; - pth_nap(tv); -#else - int was_error; - -#if HAVE_NANOSLEEP - struct timespec elapsed, tv; -#else - struct timeval tv; - Uint32 then, now, elapsed; -#endif - - /* Set the timeout interval */ -#if HAVE_NANOSLEEP - elapsed.tv_sec = ms/1000; - elapsed.tv_nsec = (ms%1000)*1000000; -#else - then = SDL_GetTicks(); -#endif - do { - errno = 0; - -#if HAVE_NANOSLEEP - tv.tv_sec = elapsed.tv_sec; - tv.tv_nsec = elapsed.tv_nsec; - was_error = nanosleep(&tv, &elapsed); -#else - /* Calculate the time interval left (in case of interrupt) */ - now = SDL_GetTicks(); - elapsed = (now-then); - then = now; - if ( elapsed >= ms ) { - break; - } - ms -= elapsed; - tv.tv_sec = ms/1000; - tv.tv_usec = (ms%1000)*1000; - - was_error = select(0, NULL, NULL, NULL, &tv); -#endif /* HAVE_NANOSLEEP */ - } while ( was_error && (errno == EINTR) ); -#endif /* SDL_THREAD_PTH */ -} - -#ifdef USE_ITIMER - -static void HandleAlarm(int sig) -{ - Uint32 ms; - - if ( SDL_alarm_callback ) { - ms = (*SDL_alarm_callback)(SDL_alarm_interval); - if ( ms != SDL_alarm_interval ) { - SDL_SetTimer(ms, SDL_alarm_callback); - } - } -} - -int SDL_SYS_TimerInit(void) -{ - struct sigaction action; - - /* Set the alarm handler (Linux specific) */ - SDL_memset(&action, 0, sizeof(action)); - action.sa_handler = HandleAlarm; - action.sa_flags = SA_RESTART; - sigemptyset(&action.sa_mask); - sigaction(SIGALRM, &action, NULL); - return(0); -} - -void SDL_SYS_TimerQuit(void) -{ - SDL_SetTimer(0, NULL); -} - -int SDL_SYS_StartTimer(void) -{ - struct itimerval timer; - - timer.it_value.tv_sec = (SDL_alarm_interval/1000); - timer.it_value.tv_usec = (SDL_alarm_interval%1000)*1000; - timer.it_interval.tv_sec = (SDL_alarm_interval/1000); - timer.it_interval.tv_usec = (SDL_alarm_interval%1000)*1000; - setitimer(ITIMER_REAL, &timer, NULL); - return(0); -} - -void SDL_SYS_StopTimer(void) -{ - struct itimerval timer; - - SDL_memset(&timer, 0, (sizeof timer)); - setitimer(ITIMER_REAL, &timer, NULL); -} - -#else /* USE_ITIMER */ - -#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: Linux uses threaded timer"); - return(-1); -} - -void SDL_SYS_StopTimer(void) -{ - return; -} - -#endif /* USE_ITIMER */ - -#endif /* SDL_TIMER_UNIX */ |