1 /* 2 * Copyright (C) 2012 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.cache; 18 19 import com.google.common.annotations.GwtCompatible; 20 21 /** 22 * Abstract interface for objects that can concurrently add longs. 23 * 24 * @author Louis Wasserman 25 */ 26 @GwtCompatible 27 interface LongAddable { increment()28 void increment(); 29 add(long x)30 void add(long x); 31 sum()32 long sum(); 33 } 34