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 {
weakInterner(int reps)27   @Benchmark int weakInterner(int reps) {
28     Interner<String> interner = Interners.newWeakInterner();
29     for (int i = 0; i < reps; i++) {
30       interner.intern(Double.toHexString(Math.random()));
31     }
32     return reps;
33   }
34 
strongInterner(int reps)35   @Benchmark int strongInterner(int reps) {
36     Interner<String> interner = Interners.newStrongInterner();
37     for (int i = 0; i < reps; i++) {
38       interner.intern(Double.toHexString(Math.random()));
39     }
40     return reps;
41   }
42 
43   @SuppressWarnings("ReturnValueIgnored")
stringIntern(int reps)44   @Benchmark int stringIntern(int reps) {
45     for (int i = 0; i < reps; i++) {
46       Double.toHexString(Math.random()).intern();
47     }
48     return reps;
49   }
50 }
51