WINGs/usleep.c

   1
   2
   3 #include "../src/config.h"
   4
   5
   6 #ifdef HAVE_SYS_TIME_H
   7 # include <sys/time.h>
   8 #endif
   9
  10 #ifdef _AIX
  11 #include <sys/select.h>
  12 #endif
  13
  14 #ifdef HAVE_SYS_TYPES_H
  15 # include <sys/types.h>
  16 #endif
  17
  18 #if defined(HAVE_SELECT)
  19
  20
  21
  22 void
  23 wusleep(unsigned int microsecs)
  24 {
  25     struct timeval tv;
  26     fd_set rd, wr, ex;
  27     FD_ZERO(&rd);
  28     FD_ZERO(&wr);
  29     FD_ZERO(&ex);
  30     tv.tv_sec = microsecs / 1000000u;
  31     tv.tv_usec = microsecs % 1000000u;
  32     select(1, &rd, &wr, &ex, &tv);
  33 }
  34
  35 #else /* not HAVE_SELECT */
  36
  37 # ifdef HAVE_POLL
  38
  39 void
  40 wusleep(unsigned int microsecs)
  41 {
  42     poll((struct poll *) 0, (size_t) 0, microsecs/1000);
  43 }
  44
  45 # else /* ! HAVE_POLL */
  46
  47 oops!
  48
  49 # endif /* !HAVE_POLL */
  50 #endif /* !HAVE_SELECT */