/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed 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 eu.stratosphere.pact.runtime.iterative.concurrent;
/**
* Singleton class for the threadsafe handover of {@link BlockingBackChannel}s from iteration heads to iteration tails
*/
public class BlockingBackChannelBroker extends Broker<BlockingBackChannel> {
/**
* Singleton instance
*/
private static final BlockingBackChannelBroker INSTANCE = new BlockingBackChannelBroker();
private BlockingBackChannelBroker() {}
/**
* retrieve singleton instance
*/
public static Broker<BlockingBackChannel> instance() {
return INSTANCE;
}
}