1 /*
2 * Copyright (c) 2019, 2022, 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
24 /*
25 * @test
26 * @enablePreview
27 * @modules java.base/jdk.internal.misc
28 * @run testng TestValueLayouts
29 */
30
31 import org.testng.annotations.*;
32
33 import java.lang.foreign.*;
34 import java.nio.ByteOrder;
35 import jdk.internal.misc.Unsafe;
36
37 import static java.lang.foreign.ValueLayout.*;
38 import static org.testng.Assert.*;
39
40 public class TestValueLayouts {
41
42 @Test
43 public void testByte() {
44 testAligned(JAVA_BYTE, byte.class, Byte.BYTES);
45 }
46
47 @Test
48 public void testBoolean() {
49 testAligned(JAVA_BOOLEAN, boolean.class, Byte.BYTES);
50 }
51
52 @Test
53 public void testShort() {
54 testAligned(JAVA_SHORT, short.class, Short.BYTES);
55 }
56
57 @Test
58 public void testShortUnaligned() {
59 testUnaligned(JAVA_SHORT_UNALIGNED, short.class, Short.BYTES);
60 }
61
62 @Test
63 public void testInt() {
64 testAligned(JAVA_INT, int.class, Integer.BYTES);
65 }
66
67 @Test
68 public void testIntUnaligned() {
69 testUnaligned(JAVA_INT_UNALIGNED, int.class, Integer.BYTES);
70 }
71
72 @Test
73 public void testLong() {
74 testAligned(JAVA_LONG, long.class, Long.BYTES, ADDRESS.byteSize());
75 }
76
77 @Test
78 public void testLongUnaligned() {
79 testUnaligned(JAVA_LONG_UNALIGNED, long.class, Long.BYTES);
80 }
81
82 @Test
83 public void testFloat() {
84 testAligned(JAVA_FLOAT, float.class, Float.BYTES);
85 }
86
87 @Test
88 public void testFloatUnaligned() {
89 testUnaligned(JAVA_FLOAT_UNALIGNED, float.class, Float.BYTES);
90 }
91
92 @Test
93 public void testDouble() {
94 testAligned(JAVA_DOUBLE, double.class, Double.BYTES, ADDRESS.byteSize());
95 }
96
97 @Test
98 public void testDoubleUnaligned() {
99 testUnaligned(JAVA_DOUBLE_UNALIGNED, double.class, Double.BYTES);
100 }
101
102 @Test
103 public void testChar() {
104 testAligned(JAVA_CHAR, char.class, Character.BYTES);
105 }
106
107 @Test
108 public void testCharUnaligned() {
109 testUnaligned(JAVA_CHAR_UNALIGNED, char.class, Character.BYTES);
110 }
111
112 @Test
113 public void testAddress() {
114 testAligned(ADDRESS, MemorySegment.class, Unsafe.ADDRESS_SIZE);
115 }
116
117 @Test
118 public void testAddressUnaligned() {
119 testUnaligned(ADDRESS_UNALIGNED, MemorySegment.class, Unsafe.ADDRESS_SIZE);
120 }
121
122 void testAligned(ValueLayout layout,
123 Class<?> carrier,
124 long byteSize) {
125 test(layout, carrier, byteSize, byteSize);
126 }
127
128 void testAligned(ValueLayout layout,
129 Class<?> carrier,
130 long byteSize,
131 long byteAlignment) {
132 test(layout, carrier, byteSize, byteAlignment);
133 }
134
135 void testUnaligned(ValueLayout layout,
136 Class<?> carrier,
137 long byteSize) {
138 test(layout, carrier, byteSize, Byte.BYTES);
139 }
140
141 void test(ValueLayout layout,
142 Class<?> carrier,
143 long byteSize,
144 long byteAlignment) {
145 assertEquals(layout.carrier(), carrier);
146 assertEquals(layout.byteSize(), byteSize);
147 assertEquals(layout.order(), ByteOrder.nativeOrder());
148 assertEquals(layout.byteAlignment(), byteAlignment);
149 assertTrue(layout.name().isEmpty());
150
151 }
152
153 }