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      1 /*
      2  * Copyright (C) 2008 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.google.common.util.concurrent;
     18 
     19 import com.google.common.base.Preconditions;
     20 
     21 import java.util.concurrent.ThreadFactory;
     22 
     23 /**
     24  * Wraps another {@link ThreadFactory}, making all new threads daemon threads.
     25  *
     26  * @author Charles Fry
     27  * @author Harendra Verma
     28  * @since 2009.09.15 <b>tentative</b>
     29  */
     30 public class DaemonThreadFactory implements ThreadFactory {
     31 
     32   private final ThreadFactory factory;
     33 
     34   public DaemonThreadFactory(ThreadFactory factory) {
     35     Preconditions.checkNotNull(factory);
     36     this.factory = factory;
     37   }
     38 
     39   public Thread newThread(Runnable r) {
     40     Thread t = factory.newThread(r);
     41     t.setDaemon(true);
     42     return t;
     43   }
     44 }
     45