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.read;
24 
25 import jdk.internal.value.ValueClass;
26 import org.openjdk.jmh.annotations.Benchmark;
27 import org.openjdk.jmh.annotations.CompilerControl;
28 import org.openjdk.jmh.annotations.Fork;
29 import org.openjdk.jmh.annotations.Setup;
30 import org.openjdk.jmh.infra.Blackhole;
31 
32 @Fork(value = 3, jvmArgsAppend = {"--enable-preview", "--add-exports", "java.base/jdk.internal.value=ALL-UNNAMED"})
33 public class ValueOopNullFree extends ReadBase {
34 
35     public static class IdentityInt {
36         public final int value;
37         public IdentityInt(int value) {
38             this.value = value;
39         }
40         public int value() {
41             return value;
42         }
43     }
44 
45     public interface InterfaceOop {
46         public IdentityInt value();
47     }
48 
49     public static value class ValueRef implements InterfaceOop {
50 
51         public final IdentityInt value;
52 
53         public ValueRef(IdentityInt value) {
54             this.value = value;
55         }
56 
57         public IdentityInt value() {
58             return value;
59         }
60 
61     }
62 
63     public static class ValState extends SizeState {
64         public ValueRef[] arr;
65 
66         @Setup
67         public void setup() {
68             arr = (ValueRef[]) ValueClass.newNullRestrictedAtomicArray(ValueRef.class, size, new ValueRef(new IdentityInt(0)));
69             for (int i = 0; i < size; i++) {
70                 arr[i] = new ValueRef(new IdentityInt(i));
71             }
72         }
73     }
74 
75     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
76     public void read_val(ValueRef[] src, Blackhole bh) {
77         for (int i = 0; i < src.length; i++) {
78             bh.consume(src[i]);
79         }
80     }
81 
82     @Benchmark
83     public void read(ValState st1, Blackhole bh) {
84         read_val(st1.arr, bh);
85     }
86 
87 }