1 /*
 2  * Copyright (c) 2025, 2026, 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.field.read;
24 
25 import jdk.internal.vm.annotation.LooselyConsistentValue;
26 import jdk.internal.vm.annotation.NullRestricted;
27 import org.openjdk.jmh.annotations.Benchmark;
28 import org.openjdk.jmh.annotations.CompilerControl;
29 import org.openjdk.jmh.annotations.Fork;
30 import org.openjdk.jmh.annotations.Setup;
31 import org.openjdk.jmh.infra.Blackhole;
32 
33 @Fork(value = 3, jvmArgsAppend = {"--enable-preview"})
34 public class Value128NullFreeNonAtomic extends ReadBase {
35 
36     public static class ValWrapper {
37         @NullRestricted
38         public ValueInt4 f;
39 
40         public ValWrapper(ValueInt4 f) {
41             this.f = f;
42             super();
43         }
44     }
45 
46     public interface InterfaceInt {
47         public int value();
48     }
49 
50     @LooselyConsistentValue
51     public static value class ValueInt4 implements InterfaceInt {
52 
53         public final int prevalue0;
54         public final int prevalue1;
55         public final int prevalue2;
56 
57         public final int value;
58 
59         public ValueInt4(int value) {
60             this.prevalue0 = value;
61             this.prevalue1 = value;
62             this.prevalue2 = value;
63             this.value = value;
64         }
65 
66         public int value() {
67             return value;
68         }
69 
70     }
71 
72 
73     public static class ValState extends SizeState {
74         public ValWrapper[] arr;
75 
76         @Setup
77         public void setup() {
78             arr = new ValWrapper[size];
79             for (int i = 0; i < size; i++) {
80                 arr[i] = new ValWrapper(new ValueInt4(i));
81             }
82         }
83     }
84 
85     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
86     public void read_val(ValWrapper[] src, Blackhole bh) {
87         for (int i = 0; i < src.length; i++) {
88             bh.consume(src[i].f);
89         }
90     }
91 
92 
93     @Benchmark
94     public void read(ValState st1, Blackhole bh) {
95         read_val(st1.arr, bh);
96     }
97 
98 }