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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Commercial Edition of the LDAP SDK, which includes all of the general-purpose functionality contained in the Standard Edition, plus additional functionality specific to UnboundID server products.

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/*
 * Copyright 2011-2016 UnboundID Corp.
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2011-2016 UnboundID Corp.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.util;



import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicLong;



/**
 * This class provides a thread factory implementation that may be used to
 * create threads with a number of basic settings.  The name of each thread will
 * be followed by a counter indicating the order in which the thread was
 * created.
 */
@Mutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class LDAPSDKThreadFactory
       implements ThreadFactory
{
  // The counter that will be used for the thread number.
  private final AtomicLong threadCounter;

  // Indicates whether the threads should be created as daemon threads.
  private final boolean daemon;

  // The base name to use for newly-created threads.
  private final String baseName;

  // The thread group that should be used for the threads.
  private final ThreadGroup threadGroup;



  /**
   * Creates a new instance of this thread factory with the provided settings.
   * Threads created will have the default thread group.
   *
   * @param  baseName  The base name to use for threads created by this factory.
   * @param  daemon    Indicates whether the threads should be created as daemon
   *                   threads.
   */
  public LDAPSDKThreadFactory(final String baseName, final boolean daemon)
  {
    this(baseName, daemon, null);
  }



  /**
   * Creates a new instance of this thread factory with the provided settings.
   *
   * @param  baseName     The base name to use for threads created by this
   *                      factory.  It must not be {@code null}.
   * @param  daemon       Indicates whether the threads should be created as
   *                      daemon threads.
   * @param  threadGroup  The thread group to use for threads created by this
   *                      factory.  It may be {@code null} if the default thread
   *                      group should be used.
   */
  public LDAPSDKThreadFactory(final String baseName, final boolean daemon,
                              final ThreadGroup threadGroup)
  {
    this.baseName     = baseName;
    this.daemon       = daemon;
    this.threadGroup  = threadGroup;

    threadCounter = new AtomicLong(1L);
  }



  /**
   * Creates a new thread using the settings for this thread factory.  The new
   * thread will not be started.
   *
   * @param  r  The {@code Runnable} target that will be used for the actual
   *            thread logic.  It must not be {@code null}.
   *
   * @return  The newly-created (but not yet started) thread.
   */
  public Thread newThread(final Runnable r)
  {
    final String name = baseName + ' ' + threadCounter.getAndIncrement();
    final Thread t = new Thread(threadGroup, r, baseName);
    t.setDaemon(daemon);
    return t;
  }
}