1 // Copyright 2009 Google Inc. All Rights Reserved.

     2 

     3 package org.chromium.sdk.internal.tools.v8.request;

     4 

     5 import java.util.concurrent.atomic.AtomicInteger;

     6 

     7 /**

     8  * A singleton that keeps track of the "seq" values for them to be unique across

     9  * the plugin lifecycle.

    10  */

    11 public class SeqGenerator {

    12 

    13   private static SeqGenerator INSTANCE = new SeqGenerator();

    14 

    15   private final AtomicInteger count = new AtomicInteger(1);

    16 

    17   public static SeqGenerator getInstance() {

    18     return INSTANCE;

    19   }

    20 

    21   public int next() {

    22     return count.getAndIncrement();

    23   }

    24 

    25   private SeqGenerator() {

    26     // not instantiable outside

    27   }

    28 }