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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *  http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package org.apache.directory.server.protocol.shared;
21  
22  
23  import java.util.concurrent.Executor;
24  import java.util.concurrent.ExecutorService;
25  import java.util.concurrent.Executors;
26  import java.util.concurrent.TimeUnit;
27  
28  
29  /**
30   * TODO: Javadoc missing
31   * 
32   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
33   */
34  public class StandardThreadPool implements Executor
35  {
36  
37      private final ExecutorService delegate;
38  
39  
40      public StandardThreadPool( int maxThreads )
41      {
42          delegate = Executors.newFixedThreadPool( maxThreads );
43      }
44  
45  
46      public void execute( Runnable command )
47      {
48          delegate.execute( command );
49      }
50  
51  
52      /**
53       * TODO wont this hang if some tasks are sufficiently badly behaved?
54       */
55      public void stop()
56      {
57          delegate.shutdown();
58          
59          for ( ;; )
60          {
61              try
62              {
63                  if ( delegate.awaitTermination( Integer.MAX_VALUE, TimeUnit.SECONDS ) )
64                  {
65                      break;
66                  }
67              }
68              catch ( InterruptedException e )
69              {
70                  //ignore
71              }
72          }
73      }
74  }