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  *
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20  * or visit www.oracle.com if you need additional information or have any
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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 jdk.internal.vm.annotation.Strict;
28 import org.openjdk.jmh.annotations.Benchmark;
29 import org.openjdk.jmh.annotations.CompilerControl;
30 import org.openjdk.jmh.annotations.Fork;
31 import org.openjdk.jmh.annotations.Setup;
32 import org.openjdk.jmh.infra.Blackhole;
33 
34 @Fork(value = 3, jvmArgsAppend = {"--enable-preview"})
35 public class Value128NullFreeNonAtomic extends ReadBase {
36 
37     public static class ValWrapper {
38         @Strict
39         @NullRestricted
40         public ValueInt4 f;
41 
42         public ValWrapper(ValueInt4 f) {
43             this.f = f;
44         }
45     }
46 
47     public interface InterfaceInt {
48         public int value();
49     }
50 
51     @LooselyConsistentValue
52     public static value class ValueInt4 implements InterfaceInt {
53 
54         public final int prevalue0;
55         public final int prevalue1;
56         public final int prevalue2;
57 
58         public final int value;
59 
60         public ValueInt4(int value) {
61             this.prevalue0 = value;
62             this.prevalue1 = value;
63             this.prevalue2 = value;
64             this.value = value;
65         }
66 
67         public int value() {
68             return value;
69         }
70 
71     }
72 
73 
74     public static class ValState extends SizeState {
75         public ValWrapper[] arr;
76 
77         @Setup
78         public void setup() {
79             arr = new ValWrapper[size];
80             for (int i = 0; i < size; i++) {
81                 arr[i] = new ValWrapper(new ValueInt4(i));
82             }
83         }
84     }
85 
86     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
87     public void read_val(ValWrapper[] src, Blackhole bh) {
88         for (int i = 0; i < src.length; i++) {
89             bh.consume(src[i].f);
90         }
91     }
92 
93 
94     @Benchmark
95     public void read(ValState st1, Blackhole bh) {
96         read_val(st1.arr, bh);
97     }
98 
99 }