1   /*
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2026, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v2.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  
15  package ch.qos.logback.core.spi;
16  
17  import java.util.concurrent.atomic.AtomicLong;
18  
19  /**
20   * 
21   * A very simple {@link SequenceNumberGenerator} based on an {@link AtomicLong}
22   * variable.
23   * 
24   * @author Ceki Gülcü
25   * @since 1.3.0
26   */
27  public class BasicSequenceNumberGenerator extends ContextAwareBase implements SequenceNumberGenerator {
28  
29      private final AtomicLong atomicLong = new AtomicLong();
30  
31      @Override
32      public long nextSequenceNumber() {
33          return atomicLong.incrementAndGet();
34      }
35  
36  }