1 /*
2  * Copyright (C) 2011 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.collect;
18 
19 import com.google.caliper.Benchmark;
20 
21 /**
22  * Benchmarking interners.
23  *
24  * @author Dimitris Andreou
25  */
26 public class InternersBenchmark {
27   @Benchmark
weakInterner(int reps)28   int weakInterner(int reps) {
29     Interner<String> interner = Interners.newWeakInterner();
30     for (int i = 0; i < reps; i++) {
31       interner.intern(Double.toHexString(Math.random()));
32     }
33     return reps;
34   }
35 
36   @Benchmark
strongInterner(int reps)37   int strongInterner(int reps) {
38     Interner<String> interner = Interners.newStrongInterner();
39     for (int i = 0; i < reps; i++) {
40       interner.intern(Double.toHexString(Math.random()));
41     }
42     return reps;
43   }
44 
45   @Benchmark
stringIntern(int reps)46   int stringIntern(int reps) {
47     for (int i = 0; i < reps; i++) {
48       String unused = Double.toHexString(Math.random()).intern();
49     }
50     return reps;
51   }
52 }
53