001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *  http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019
020package org.apache.directory.server.protocol.shared;
021
022
023import java.util.concurrent.Executor;
024import java.util.concurrent.ExecutorService;
025import java.util.concurrent.Executors;
026import java.util.concurrent.TimeUnit;
027
028
029/**
030 * TODO: Javadoc missing
031 * 
032 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
033 */
034public class StandardThreadPool implements Executor
035{
036
037    private final ExecutorService delegate;
038
039
040    public StandardThreadPool( int maxThreads )
041    {
042        delegate = Executors.newFixedThreadPool( maxThreads );
043    }
044
045
046    public void execute( Runnable command )
047    {
048        delegate.execute( command );
049    }
050
051
052    /**
053     * TODO wont this hang if some tasks are sufficiently badly behaved?
054     */
055    public void stop()
056    {
057        delegate.shutdown();
058        
059        for ( ;; )
060        {
061            try
062            {
063                if ( delegate.awaitTermination( Integer.MAX_VALUE, TimeUnit.SECONDS ) )
064                {
065                    break;
066                }
067            }
068            catch ( InterruptedException e )
069            {
070                //ignore
071            }
072        }
073    }
074}