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    1   /**
    2    *  Licensed to the Apache Software Foundation (ASF) under one or more
    3    *  contributor license agreements.  See the NOTICE file distributed with
    4    *  this work for additional information regarding copyright ownership.
    5    *  The ASF licenses this file to You under the Apache License, Version 2.0
    6    *  (the "License"); you may not use this file except in compliance with
    7    *  the License.  You may obtain a copy of the License at
    8    *
    9    *     http://www.apache.org/licenses/LICENSE-2.0
   10    *
   11    *  Unless required by applicable law or agreed to in writing, software
   12    *  distributed under the License is distributed on an "AS IS" BASIS,
   13    *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   14    *  See the License for the specific language governing permissions and
   15    *  limitations under the License.
   16    */
   17   package org.apache.geronimo.system.threads;
   18   
   19   import java.util.concurrent.TimeUnit;
   20   
   21   /**
   22    * Management interface for thread pools
   23    *
   24    * @version $Rev: 543715 $ $Date: 2007-06-02 01:10:16 -0700 (Sat, 02 Jun 2007) $
   25    */
   26   public interface ThreadPool {
   27   
   28       int getPoolSize();
   29   
   30       /**
   31        * Gets the maximum number of threads allowed for this thread pool
   32        */
   33       int getMaximumPoolSize();
   34   
   35       int getActiveCount();
   36   
   37       boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException;
   38   
   39       /**
   40        * Executes work on behalf of a named client.  This helps the thread pool
   41        * track who's using its threads.
   42        * @param consumerName  A name identifying the caller, to be used in
   43        *                      the management statistics for this pool, etc.
   44        * @param runnable      The work to be done by a thread in the pool
   45        */
   46       void execute(String consumerName, Runnable runnable) throws InterruptedException;
   47   }

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