SDL_systimer.rar

  • PUDN用户
    了解作者
  • Unix_Linux
    开发工具
  • 1KB
    文件大小
  • rar
    文件格式
  • 0
    收藏次数
  • 1 积分
    下载积分
  • 1
    下载次数
  • 2015-10-09 16:19
    上传日期
SDL - Simple DirectMedia Layer.
SDL_systimer.rar
  • SDL_systimer.c
    2KB
内容介绍
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2012 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_DC #include <kos.h> #include "SDL_thread.h" #include "SDL_timer.h" #include "../SDL_timer_c.h" static unsigned start; /* jif = ms * HZ /1000 ms = jif * 1000/HZ */ void SDL_StartTicks(void) { /* Set first ticks value */ start = jiffies; } Uint32 SDL_GetTicks(void) { return((jiffies-start)*1000/HZ); } void SDL_Delay(Uint32 ms) { thd_sleep(ms); } /* 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(10); } 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: DC uses threaded timer"); return(-1); } void SDL_SYS_StopTimer(void) { return; } #endif /* SDL_TIMER_DC */
评论
    相关推荐