newlib/libc/posix/sleep.c

   1 /* libc/posix/sleep.c - sleep function */
   2
   3 /* Written 2000 by Werner Almesberger */
   4
   5 #ifdef HAVE_NANOSLEEP
   6
   7 #include <errno.h>
   8 #include <time.h>
   9 #include <unistd.h>
  10 #include <limits.h>
  11
  12 unsigned sleep(unsigned seconds)
  13 {
  14     struct timespec ts;
  15
  16     ts.tv_sec = seconds;
  17     ts.tv_nsec = 0;
  18     if (!nanosleep(&ts,&ts)) return 0;
  19     if (errno == EINTR) return ts.tv_sec & UINT_MAX;
  20     return -1;
  21 }
  22
  23 #endif