1 /*
 2  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 package org.openjdk.bench.valhalla.corelibs.mapprotos;
24 
25 import org.openjdk.jmh.annotations.Benchmark;
26 import org.openjdk.jmh.annotations.BenchmarkMode;
27 import org.openjdk.jmh.annotations.CompilerControl;
28 import org.openjdk.jmh.annotations.Fork;
29 import org.openjdk.jmh.annotations.Mode;
30 import org.openjdk.jmh.annotations.OutputTimeUnit;
31 import org.openjdk.jmh.annotations.Param;
32 import org.openjdk.jmh.annotations.Scope;
33 import org.openjdk.jmh.annotations.Setup;
34 import org.openjdk.jmh.annotations.State;
35 
36 import java.util.HashMap;
37 import java.util.Map;
38 import java.util.function.Supplier;
39 import java.util.function.IntFunction;
40 import java.util.concurrent.TimeUnit;
41 
42 
43 @BenchmarkMode(Mode.AverageTime)
44 @OutputTimeUnit(TimeUnit.MILLISECONDS)
45 @Fork(1)
46 @State(Scope.Thread)
47 public class PutX extends MapBase {
48     IntFunction<Map<Integer, Integer>> mapSupplier;
49 
50     @Param(value = {"org.openjdk.bench.valhalla.corelibs.mapprotos.YHashMap",
51             "org.openjdk.bench.valhalla.corelibs.mapprotos.XHashMap",
52             "java.util.HashMap"})
53         private String mapType;
54 
55     @Setup
56     public void setup() {
57         super.init(size);
58         try {
59             Class<?> mapClass = Class.forName(mapType);
60             mapSupplier =  (size) -> newInstance(mapClass, size);
61         } catch (Exception ex) {
62             System.out.printf("%s: %s%n", mapType, ex.getMessage());
63             return;
64         }
65     }
66 
67     Map<Integer, Integer> newInstance(Class<?> mapClass, int size) {
68         try {
69             return (Map<Integer, Integer>)mapClass.getConstructor(int.class).newInstance(size);
70         } catch (Exception ex) {
71             throw new RuntimeException("failed", ex);
72         }
73     }
74 
75     @Benchmark
76     public Map<Integer, Integer> put() {
77         Integer[] keys = this.keys;
78         Map<Integer, Integer> map = mapSupplier.apply(0);
79         for (Integer k : keys) {
80             map.put(k, k);
81         }
82         return map;
83     }
84 
85     @Benchmark
86     public Map<Integer, Integer> putSized() {
87         Integer[] keys = this.keys;
88         Map<Integer, Integer> map = mapSupplier.apply(size * 2);
89         for (Integer k : keys) {
90             map.put(k, k);
91         }
92         return map;
93     }
94 
95 }