+static void stdout_post_select_btr(struct sched *s, struct task *t)
+{
+ struct stdout_task *sot = container_of(t, struct stdout_task, task);
+ ssize_t ret;
+ size_t sz = btr_get_input_queue_size(sot->btrn);
+ char *buf;
+
+ t->error = 0;
+ if (!sot->check_fd) {
+ if (sz == 0 && btr_no_parent(sot->btrn)) {
+ t->error = -E_STDOUT_EOF;
+ goto err;
+ }
+ return;
+ }
+ if (!FD_ISSET(STDOUT_FILENO, &s->wfds))
+ return;
+ sz = btr_next_buffer(sot->btrn, &buf);
+ if (sz == 0)
+ return;
+ ret = write_nonblock(STDOUT_FILENO, buf, sz, 0);
+ if (ret < 0) {
+ t->error = -ERRNO_TO_PARA_ERROR(errno);
+ goto err;
+ }
+ btr_consume(sot->btrn, ret);
+ return;
+err:
+ btr_remove_node(sot->btrn);
+}