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    
020    
021    package org.apache.directory.server.protocol.shared;
022    
023    import java.util.concurrent.Executor;
024    import java.util.concurrent.ExecutorService;
025    import java.util.concurrent.Executors;
026    import java.util.concurrent.TimeUnit;
027    
028    /**
029     * @version $Rev: 604361 $ $Date: 2007-12-15 02:58:40 +0200 (Sat, 15 Dec 2007) $
030     * @org.apache.xbean.XBean
031     */
032    public class StandardThreadPool implements Executor
033    {
034    
035        private final ExecutorService delegate;
036    
037    
038        public StandardThreadPool( int maxThreads )
039        {
040            delegate = Executors.newFixedThreadPool( maxThreads );
041        }
042    
043        public void execute( Runnable command )
044        {
045            delegate.execute( command );
046        }
047    
048        /**
049         * TODO wont this hang if some tasks are sufficiently badly behaved?
050         * @org.apache.xbean.DestroyMethod
051         */
052        public void stop()
053        {
054            delegate.shutdown();
055            for ( ; ; )
056            {
057                try
058                {
059                    if ( delegate.awaitTermination( Integer.MAX_VALUE, TimeUnit.SECONDS ) )
060                    {
061                        break;
062                    }
063                }
064                catch ( InterruptedException e )
065                {
066                    //ignore
067                }
068            }
069    
070        }
071    }