1 /*
2 * Copyright (c) 2025, 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.array.fill;
24
25 import org.openjdk.jmh.annotations.Benchmark;
26 import org.openjdk.jmh.annotations.CompilerControl;
27 import org.openjdk.jmh.annotations.Scope;
28 import org.openjdk.jmh.annotations.Setup;
29 import org.openjdk.jmh.annotations.State;
30
31 import java.util.Arrays;
32
33 public class Identity extends FillBase {
34
35 public interface InterfaceInt {
36 public int value();
37 }
38
39 public static class IdentityInt implements InterfaceInt {
40 public final int value;
41 public IdentityInt(int value) {
42 this.value = value;
43 }
44 public int value() {
45 return value;
46 }
47 }
48
49
50 public static class RefState extends SizeState {
51 public IdentityInt[] arr;
52
53 @Setup
54 public void setup() {
55 arr = new IdentityInt[size];
56 for (int i = 0; i < size; i++) {
57 arr[i] = new IdentityInt(i);
58 }
59 }
60 }
61
62 public static class StaticHolder {
63 public static IdentityInt VALUE = new IdentityInt(42);
64 }
65
66 @State(Scope.Thread)
67 public static class InstanceHolder {
68 public IdentityInt VALUE = new IdentityInt(42);
69 }
70
71 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
72 public IdentityInt get_ref(int i) {
73 return new IdentityInt(i);
74 }
75
76 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
77 public void fill_new_ref(IdentityInt[] dst) {
78 for (int i = 0; i < dst.length; i++) {
79 dst[i] = new IdentityInt(42);
80 }
81 }
82
83 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
84 public void arrayfill_new_ref(IdentityInt[] dst) {
85 Arrays.fill(dst, new IdentityInt(42));
86 }
87
88 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
89 public void fill_local_ref(IdentityInt[] dst) {
90 IdentityInt local = get_ref(42);
91 for (int i = 0; i < dst.length; i++) {
92 dst[i] = local;
93 }
94 }
95
96 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
97 public void arrayfill_local_ref(IdentityInt[] dst) {
98 Arrays.fill(dst, get_ref(42));
99 }
100
101 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
102 public void fill_static_ref(IdentityInt[] dst) {
103 for (int i = 0; i < dst.length; i++) {
104 dst[i] = StaticHolder.VALUE;
105 }
106 }
107
108 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
109 public void arrayfill_static_ref(IdentityInt[] dst) {
110 Arrays.fill(dst, StaticHolder.VALUE);
111 }
112
113 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
114 public void fill_instance_ref(IdentityInt[] dst, InstanceHolder ih) {
115 for (int i = 0; i < dst.length; i++) {
116 dst[i] = ih.VALUE;
117 }
118 }
119
120 @CompilerControl(CompilerControl.Mode.DONT_INLINE)
121 public void arrayfill_instance_ref(IdentityInt[] dst, InstanceHolder ih) {
122 Arrays.fill(dst, ih.VALUE);
123 }
124
125 @Benchmark
126 public void fill_new(RefState st1) {
127 fill_new_ref(st1.arr);
128 }
129
130 @Benchmark
131 public void arrayfill_new(RefState st1) {
132 arrayfill_new_ref(st1.arr);
133 }
134
135 @Benchmark
136 public void fill_local(RefState st1) {
137 fill_local_ref(st1.arr);
138 }
139
140 @Benchmark
141 public void arrayfill_local(RefState st1) {
142 arrayfill_local_ref(st1.arr);
143 }
144
145 @Benchmark
146 public void fill_static(RefState st1) {
147 fill_static_ref(st1.arr);
148 }
149
150 @Benchmark
151 public void arrayfill_static(RefState st1) {
152 arrayfill_static_ref(st1.arr);
153 }
154
155 @Benchmark
156 public void fill_instance(RefState st1, InstanceHolder ih) {
157 fill_instance_ref(st1.arr, ih);
158 }
159
160 @Benchmark
161 public void arrayfill_instance(RefState st1, InstanceHolder ih) {
162 arrayfill_instance_ref(st1.arr, ih);
163 }
164
165 }