/*
* 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.jena.atlas.lib;
import java.util.concurrent.BlockingDeque;
import java.util.concurrent.LinkedBlockingDeque;
import com.hp.hpl.jena.sparql.ARQException;
/** Finite capacity pool - capacity is fixed at create time */
public class PoolFiniteBlocking<T> implements Pool<T>
{
BlockingDeque<T> pool ;
public PoolFiniteBlocking(int size) { pool = new LinkedBlockingDeque<T>(size) ; }
@Override
public final void put(T item)
{
pool.addLast(item) ;
}
@Override
public T get()
{
try
{
return pool.takeFirst() ;
} catch (InterruptedException ex)
{
throw new ARQException("Failed to get an item from the pool (InterruptedException): "+ex.getMessage()) ;
}
}
@Override
public boolean isEmpty() { return pool.isEmpty() ; }
}