revents           376 ext/socket/init.c     int sockerr, revents;
revents           392 ext/socket/init.c     revents = rb_wait_for_single_fd(fd, RB_WAITFD_IN|RB_WAITFD_OUT, NULL);
revents           394 ext/socket/init.c     if (revents < 0)
revents            34 include/ruby/io.h #    define rtnevents revents
revents          3864 thread.c           if (fds.revents & POLLNVAL) {
revents          3874 thread.c           if (fds.revents & POLLIN_SET)
revents          3876 thread.c           if (fds.revents & POLLOUT_SET)
revents          3878 thread.c           if (fds.revents & POLLEX_SET)