rb_fd_select      343 include/ruby/intern.h #define rb_fd_select(n, rfds, wfds, efds, timeout)	rb_w32_select((n), (rfds) ? ((rb_fdset_t*)(rfds))->fdset : NULL, (wfds) ? ((rb_fdset_t*)(wfds))->fdset : NULL, (efds) ? ((rb_fdset_t*)(efds))->fdset: NULL, (timeout))
rb_fd_select      364 include/ruby/intern.h #define rb_fd_select(n, rfds, wfds, efds, timeout)	select((n), (rfds), (wfds), (efds), (timeout))
rb_fd_select     3537 thread.c       rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds, rb_fdset_t *exceptfds, struct timeval *timeout)