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.readpartial;
24 
25 import jdk.internal.value.ValueClass;
26 import jdk.internal.vm.annotation.LooselyConsistentValue;
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", "--add-exports", "java.base/jdk.internal.value=ALL-UNNAMED"})
34 public class ValueOopNullFreeNonAtomic extends ReadBase {
35 
36     public static class IdentityInt {
37         public final int value;
38         public IdentityInt(int value) {
39             this.value = value;
40         }
41         public int value() {
42             return value;
43         }
44     }
45 
46     public interface InterfaceOop {
47         public IdentityInt value();
48     }
49 
50     @LooselyConsistentValue
51     public static value class ValueRef4 implements InterfaceOop {
52         public final IdentityInt prevalue0;
53         public final IdentityInt prevalue1;
54         public final IdentityInt prevalue2;
55         public final IdentityInt value;
56 
57         public ValueRef4(IdentityInt value) {
58             this.prevalue0 = value;
59             this.prevalue1 = value;
60             this.prevalue2 = value;
61             this.value = value;
62         }
63 
64         public IdentityInt value() {
65             return value;
66         }
67 
68     }
69 
70     public static class ValState extends SizeState {
71         public ValueRef4[] arr;
72 
73         @Setup
74         public void setup() {
75             arr = (ValueRef4[]) ValueClass.newNullRestrictedAtomicArray(ValueRef4.class, size, new ValueRef4(new IdentityInt(0)));
76             for (int i = 0; i < size; i++) {
77                 arr[i] = new ValueRef4(new IdentityInt(i));
78             }
79         }
80     }
81 
82     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
83     public void read_val(ValueRef4[] src, Blackhole bh) {
84         for (int i = 0; i < src.length; i++) {
85             bh.consume(src[i].value);
86         }
87     }
88 
89     @Benchmark
90     public void read(ValState st1, Blackhole bh) {
91         read_val(st1.arr, bh);
92     }
93 
94 }