ext/kgio/nonblock.h

   1 #include <ruby.h>
   2 #include <unistd.h>
   3 #include <fcntl.h>
   4 static void set_nonblocking(int fd)
   5 {
   6         int flags = fcntl(fd, F_GETFL);
   7
   8         if (flags == -1)
   9                 rb_sys_fail("fcntl(F_GETFL)");
  10         if ((flags & O_NONBLOCK) == O_NONBLOCK)
  11                 return;
  12         flags = fcntl(fd, F_SETFL, flags | O_NONBLOCK);
  13         if (flags == -1)
  14                 rb_sys_fail("fcntl(F_SETFL)");
  15 }