time.c

   1 #ifdef __EMX__
   2         #include <stdlib.h>
   3 #endif
   4 #ifndef WIN32
   5         #include <sys/time.h>
   6         #include <sys/types.h>
   7         #include <unistd.h>
   8 #else
   9         #include <time.h>
  10 #endif
  11 #include <string.h>
  12
  13 #ifdef HAVE_SYS_SELECT_H
  14         #include <sys/select.h>
  15 #endif
  16 #include "cfg.h"
  17
  18 /* gets current time in microseconds */
  19 unsigned long_long get_time(void)
  20 {
  21 #ifndef WIN32
  22         struct timeval tv;
  23         struct timezone tz;
  24
  25         memset(&tz,0,sizeof(tz));
  26         gettimeofday(&tv,&tz);
  27         return ((unsigned long_long)tv.tv_sec)*1000000+(unsigned long_long)tv.tv_usec;
  28 #else
  29         return ((unsigned long_long)GetTickCount())*1000UL;
  30 #endif
  31 }
  32
  33
  34 /* waits until time t passes */
  35 void sleep_until(unsigned long_long t)
  36 {
  37         unsigned long_long u=get_time();
  38
  39
  40         if (u>=t) return;
  41         t-=u;
  42 #ifdef WIN32
  43         Sleep((DWORD)(t/1000));
  44 #elif defined(__EMX__)
  45         _sleep2(t/1000);
  46 #else
  47         {
  48                 struct timeval tv;
  49
  50                 tv.tv_sec=0;
  51                 tv.tv_usec=t;
  52                 select(0,NULL,NULL,NULL,&tv);
  53         }
  54 #endif
  55 }
  56
  57
  58 /* waits time t microseconds */
  59 void my_sleep(unsigned long_long t)
  60 {
  61 #ifdef WIN32
  62         Sleep((DWORD)(t/1000));
  63 #elif defined(__EMX__)
  64         _sleep2(t/1000);
  65 #else
  66         {
  67                 struct timeval tv;
  68
  69                 tv.tv_sec=0;
  70                 tv.tv_usec=t;
  71                 select(0,NULL,NULL,NULL,&tv);
  72         }
  73 #endif
  74 }
  75