org.apache.flink.runtime.io.network.partition.BufferAvailabilityListener Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.io.network.partition;
/**
* Listener interface implemented by consumers of {@link ResultSubpartitionView} that want to be
* notified of availability of further buffers.
*/
public interface BufferAvailabilityListener {
/** Called whenever there might be new data available. */
void notifyDataAvailable();
/**
* Called when the first priority event is added to the head of the buffer queue.
*
* @param prioritySequenceNumber the sequence number that identifies the priority buffer.
*/
default void notifyPriorityEvent(int prioritySequenceNumber) {}
}