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1   /*
2    * Copyright (C) 2012 The Guava Authors
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5    * in compliance with the License. You may obtain a copy of the License at
6    *
7    * http://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software distributed under the License
10   * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11   * or implied. See the License for the specific language governing permissions and limitations under
12   * the License.
13   */
14  
15  package com.google.common.cache;
16  
17  import com.google.common.annotations.GwtCompatible;
18  
19  /**
20   * Abstract interface for objects that can concurrently add longs.
21   *
22   * @author Louis Wasserman
23   */
24  @GwtCompatible
25  interface LongAddable {
26    void increment();
27  
28    void add(long x);
29  
30    long sum();
31  }