1 /*
2 * Copyright (c) 2017, 2018, 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 package org.graalvm.compiler.core.test;
26
27 import java.nio.ByteBuffer;
28 import java.nio.ByteOrder;
29 import java.util.ArrayList;
30 import java.util.Collection;
31 import org.junit.Test;
32 import org.junit.runner.RunWith;
33 import org.junit.runners.Parameterized;
34 import org.junit.runners.Parameterized.Parameter;
35 import org.junit.runners.Parameterized.Parameters;
36
37 @RunWith(Parameterized.class)
38 public class ByteBufferTest extends GraalCompilerTest {
39
40 class Ret {
41
42 byte byteValue = 0;
43 short shortValue = 0;
44 int intValue = 0;
45 long longValue = 0;
46 float floatValue = 0.0f;
47 double doubleValue = 0.0d;
48
49 @Override
50 public boolean equals(Object obj) {
51 if (!(obj instanceof Ret)) {
52 return false;
53 }
54
55 Ret other = (Ret) obj;
56 if (this.byteValue != other.byteValue) {
57 return false;
58 }
59 if (this.shortValue != other.shortValue) {
60 return false;
61 }
62 if (this.intValue != other.intValue) {
63 return false;
64 }
65 if (this.longValue != other.longValue) {
66 return false;
67 }
68 if (Float.floatToRawIntBits(this.floatValue) != Float.floatToRawIntBits(other.floatValue)) {
69 return false;
70 }
71 if (Double.doubleToRawLongBits(this.doubleValue) != Double.doubleToRawLongBits(other.doubleValue)) {
72 return false;
73 }
74
75 return true;
76 }
77
78 @Override
79 public int hashCode() {
80 return 0;
81 }
82
83 @Override
84 public String toString() {
85 return String.format("0x%02x, 0x%04x, 0x%08x, 0x%04x, 0x%08x", byteValue, shortValue, intValue, Float.floatToRawIntBits(floatValue), Double.doubleToRawLongBits(doubleValue));
86 }
87 }
88
89 @Parameters(name = "{0}")
90 public static Collection<Object[]> data() {
91 ArrayList<Object[]> ret = new ArrayList<>();
92 ret.add(new Object[]{ByteOrder.BIG_ENDIAN});
93 ret.add(new Object[]{ByteOrder.LITTLE_ENDIAN});
94 return ret;
95 }
96
97 @Parameter public ByteOrder byteOrder;
98
99 Ret alignedReadSnippet(byte[] arg) {
100 ByteBuffer buffer = ByteBuffer.wrap(arg).order(byteOrder);
101
102 Ret ret = new Ret();
103 ret.byteValue = buffer.get();
104 ret.byteValue += buffer.get();
105 ret.shortValue = buffer.getShort();
106 ret.intValue = buffer.getInt();
107 ret.longValue = buffer.getLong();
108 ret.doubleValue = buffer.getDouble();
109 ret.floatValue = buffer.getFloat();
110
111 return ret;
112 }
113
114 @Test
115 public void testReadAligned() {
116 byte[] input = new byte[28];
117 for (int i = 0; i < 28; i++) {
118 input[i] = (byte) (7 * (i + 42));
119 }
120 test("alignedReadSnippet", input);
121 }
122
123 byte[] alignedWriteSnippet(byte a, byte b, short c, int d, long e, double f, float g) {
124 byte[] ret = new byte[28];
125 ByteBuffer buffer = ByteBuffer.wrap(ret).order(byteOrder);
126
127 buffer.put(a);
128 buffer.put(b);
129 buffer.putShort(c);
130 buffer.putInt(d);
131 buffer.putLong(e);
132 buffer.putDouble(f);
133 buffer.putFloat(g);
134
135 return ret;
136 }
137
138 @Test
139 public void testWriteAligned() {
140 test("alignedWriteSnippet", (byte) 5, (byte) -3, (short) 17, 42, 0x3FC30A25644B7130L, 84.72, 1.23f);
141 }
142
143 Ret unalignedReadSnippet(byte[] arg) {
144 ByteBuffer buffer = ByteBuffer.wrap(arg).order(byteOrder);
145
146 Ret ret = new Ret();
147 ret.byteValue = buffer.get();
148 ret.shortValue = buffer.getShort();
149 ret.intValue = buffer.getInt();
150 ret.longValue = buffer.getLong();
151 ret.doubleValue = buffer.getDouble();
152 ret.floatValue = buffer.getFloat();
153
154 return ret;
155 }
156
157 @Test
158 public void testReadUnaligned() {
159 byte[] input = new byte[27];
160 for (int i = 0; i < 27; i++) {
161 input[i] = (byte) (7 * (i + 42));
162 }
163 test("unalignedReadSnippet", input);
164 }
165
166 byte[] unalignedWriteSnippet(byte a, short b, int c, long d, double e, float f) {
167 byte[] ret = new byte[27];
168 ByteBuffer buffer = ByteBuffer.wrap(ret).order(byteOrder);
169
170 buffer.put(a);
171 buffer.putShort(b);
172 buffer.putInt(c);
173 buffer.putLong(d);
174 buffer.putDouble(e);
175 buffer.putFloat(f);
176
177 return ret;
178 }
179
180 @Test
181 public void testWriteUnaligned() {
182 test("unalignedWriteSnippet", (byte) -3, (short) 17, 42, 0x3FC30A25644B7130L, 84.72, 1.23f);
183 }
184 }