rb_fd_zero 313 include/ruby/intern.h void rb_fd_zero(rb_fdset_t *); rb_fd_zero 10141 io.c rb_fd_zero(&stp->fds); rb_fd_zero 10164 io.c rb_fd_zero(&stp->fds); rb_fd_zero 3564 thread.c #define FD_ZERO(f) rb_fd_zero(f) rb_fd_zero 3617 thread.c #define FD_ZERO(f) rb_fd_zero(f)