static int
native_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds, rb_fdset_t *exceptfds, struct timeval *timeout, rb_thread_t *th)
{
fd_set *r = NULL, *w = NULL, *e = NULL;
if (readfds) {
rb_fd_resize(n - 1, readfds);
r = rb_fd_ptr(readfds);
}
if (writefds) {
rb_fd_resize(n - 1, writefds);
w = rb_fd_ptr(writefds);
}
if (exceptfds) {
rb_fd_resize(n - 1, exceptfds);
e = rb_fd_ptr(exceptfds);
}
return rb_w32_select_with_thread(n, r, w, e, timeout, th);
}
int
rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds, rb_fdset_t *exceptfds, struct timeval *timeout)
{
fd_set *r = NULL, *w = NULL, *e = NULL;
if (readfds) {
rb_fd_resize(n - 1, readfds);
r = rb_fd_ptr(readfds);
}
if (writefds) {
rb_fd_resize(n - 1, writefds);
w = rb_fd_ptr(writefds);
}
if (exceptfds) {
rb_fd_resize(n - 1, exceptfds);
e = rb_fd_ptr(exceptfds);
}
return select(n, r, w, e, timeout);
}
static void
rb_thread_wait_fd_rw(int fd, int read)
{
int result = 0;
while (result <= 0) {
rb_fdset_t *set = ALLOC(rb_fdset_t);
rb_fd_init(set);
FD_SET(fd, set);
if (read) {
result = do_select(fd + 1, rb_fd_ptr(set), 0, 0, 0);
}
else {
result = do_select(fd + 1, 0, rb_fd_ptr(set), 0, 0);
}
rb_fd_term(set);
if (result < 0) {
rb_sys_fail(0);
}
}
}
