content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.spark.launcher;
  
  import java.util.concurrent.ThreadFactory;
  import java.util.concurrent.atomic.AtomicLong;
  
  class NamedThreadFactory implements ThreadFactory {
  
    private final String nameFormat;
    private final AtomicLong threadIds;
  
    NamedThreadFactory(String nameFormat) {
      this.nameFormat = nameFormat;
      this.threadIds = new AtomicLong();
    }
  
    @Override
    public Thread newThread(Runnable r) {
      Thread t = new Thread(r, String.format(nameFormat, threadIds.incrementAndGet()));
      t.setDaemon(true);
      return t;
    }
  
  }
  