1 /*
 2  * Copyright (c) 2020, 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.traversal;
24 
25 import org.openjdk.bench.valhalla.util.SizeBase;
26 import org.openjdk.bench.valhalla.types.Int32;
27 import org.openjdk.bench.valhalla.types.R32int;
28 import org.openjdk.bench.valhalla.util.Utils;
29 import org.openjdk.jmh.annotations.Benchmark;
30 import org.openjdk.jmh.annotations.CompilerControl;
31 import org.openjdk.jmh.annotations.Setup;
32 
33 public class Identity32 extends SizeBase {
34 
35     public static abstract class IntState extends SizeState {
36         public Int32[] arr;
37         void fill() {
38             int[] a = Utils.makeRandomRing(arr.length);
39             for (int i = 0; i < a.length; i++) {
40                 arr[i] = new R32int(a[i]);
41             }
42         }
43     }
44 
45     public static abstract class RefState extends SizeState {
46         public R32int[] arr;
47         void fill() {
48             int[] a = Utils.makeRandomRing(arr.length);
49             for (int i = 0; i < a.length; i++) {
50                 arr[i] = new R32int(a[i]);
51             }
52         }
53     }
54 
55     public static class Int_as_Int extends IntState {
56         @Setup
57         public void setup() {
58             arr = new Int32[size];
59             fill();
60         }
61     }
62 
63     public static class Ref_as_Ref extends RefState {
64         @Setup
65         public void setup() {
66             arr = new R32int[size];
67             fill();
68         }
69     }
70 
71     @Benchmark
72     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
73     public int Int_as_Int_walk(Int_as_Int s) {
74         int steps = 0;
75         Int32[] values = s.arr;
76         for (int i = values[0].intValue(); i != 0; i = values[i].intValue()) steps++;
77         return steps;
78     }
79 
80     @Benchmark
81     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
82     public int Ref_as_Ref_walk(Ref_as_Ref s) {
83         int steps = 0;
84         R32int[] values = s.arr;
85         for (int i = values[0].intValue(); i != 0; i = values[i].intValue()) steps++;
86         return steps;
87     }
88 
89 }