+
+/**
+ * Simple pre-select hook, used by all receivers.
+ *
+ * \param s Scheduler info.
+ * \param t Determines the receiver node.
+ *
+ * This requests a minimal delay from the scheduler if the status of the buffer
+ * tree node indicates an error/eof condition. No file descriptors are added to
+ * the fd sets of \a s.
+ *
+ * \return The status of the btr node of the receiver node, i.e. the return
+ * value of the underlying call to \ref btr_node_status().
+ */
+int generic_recv_pre_select(struct sched *s, struct task *t)
+{
+ struct receiver_node *rn = container_of(t, struct receiver_node, task);
+ int ret = btr_node_status(rn->btrn, 0, BTR_NT_ROOT);
+
+ t->error = 0;
+ if (ret < 0)
+ sched_min_delay(s);
+ return ret;
+}