1 /*
2 * Copyright (c) 2016, 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 package jdk.vm.ci.hotspot.test;
25
26 import java.lang.reflect.Field;
27 import jdk.vm.ci.meta.JavaConstant;
28 import jdk.vm.ci.meta.JavaKind;
29 import jdk.vm.ci.runtime.JVMCI;
30 import org.testng.annotations.DataProvider;
31 import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider;
32 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider;
33 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
34 import jdk.vm.ci.meta.Constant;
35 import sun.misc.Unsafe;
36
37 public class MemoryAccessProviderData {
38 private static final Unsafe UNSAFE = getUnsafe();
39 private static final HotSpotConstantReflectionProvider CONSTANT_REFLECTION = (HotSpotConstantReflectionProvider) JVMCI
40 .getRuntime().getHostJVMCIBackend().getConstantReflection();
41 private static final TestClass TEST_OBJECT = new TestClass();
42 private static final JavaConstant TEST_CONSTANT = CONSTANT_REFLECTION
43 .forObject(TEST_OBJECT);
44 private static final JavaConstant TEST_CLASS_CONSTANT = CONSTANT_REFLECTION
45 .forObject(TestClass.class);
46
47 private static Unsafe getUnsafe() {
48 try {
49 Field f = Unsafe.class.getDeclaredField("theUnsafe");
50 f.setAccessible(true);
51 return (Unsafe) f.get(null);
52 } catch (NoSuchFieldException | IllegalAccessException e) {
53 throw new RuntimeException("Unable to get Unsafe instance.", e);
54 }
55 }
56
57 @DataProvider(name = "positiveObject")
58 public static Object[][] getPositiveObjectJavaKind() {
59 HotSpotJVMCIRuntimeProvider runtime = (HotSpotJVMCIRuntimeProvider) JVMCI
60 .getRuntime();
61 int offset = runtime.getConfig().classMirrorOffset;
62 Constant wrappedKlassPointer = ((HotSpotResolvedObjectType) runtime
63 .fromClass(TestClass.class)).klass();
64 return new Object[][]{new Object[]{JavaKind.Object,
65 wrappedKlassPointer, (long) offset, TEST_CLASS_CONSTANT, 0}};
66 }
67
68 @DataProvider(name = "positivePrimitive")
69 public static Object[][] getPositivePrimitiveJavaKinds() {
70 Field booleanField;
71 Field byteField;
72 Field shortField;
73 Field intField;
74 Field longField;
75 Field floatField;
76 Field doubleField;
77 Field charField;
78 try {
79 booleanField = MemoryAccessProviderData.TestClass.class
80 .getDeclaredField("booleanField");
81 byteField = MemoryAccessProviderData.TestClass.class
82 .getDeclaredField("byteField");
83 shortField = MemoryAccessProviderData.TestClass.class
84 .getDeclaredField("shortField");
85 intField = MemoryAccessProviderData.TestClass.class
86 .getDeclaredField("intField");
87 longField = MemoryAccessProviderData.TestClass.class
88 .getDeclaredField("longField");
89 floatField = MemoryAccessProviderData.TestClass.class
90 .getDeclaredField("floatField");
91 doubleField = MemoryAccessProviderData.TestClass.class
92 .getDeclaredField("doubleField");
93 charField = MemoryAccessProviderData.TestClass.class
94 .getDeclaredField("charField");
95 } catch (NoSuchFieldException e) {
96 throw new Error("TESTBUG: can't find test field " + e, e);
97 }
98 long booleanFieldOffset = UNSAFE.objectFieldOffset(booleanField);
99 long byteFieldOffset = UNSAFE.objectFieldOffset(byteField);
100 long shortFieldOffset = UNSAFE.objectFieldOffset(shortField);
101 long intFieldOffset = UNSAFE.objectFieldOffset(intField);
102 long longFieldOffset = UNSAFE.objectFieldOffset(longField);
103 long floatFieldOffset = UNSAFE.objectFieldOffset(floatField);
104 long doubleFieldOffset = UNSAFE.objectFieldOffset(doubleField);
105 long charFieldOffset = UNSAFE.objectFieldOffset(charField);
106 return new Object[][]{
107 new Object[]{JavaKind.Boolean, TEST_CONSTANT,
108 booleanFieldOffset,
109 JavaConstant.forBoolean(TEST_OBJECT.booleanField), 8},
110 new Object[]{JavaKind.Byte, TEST_CONSTANT, byteFieldOffset,
111 JavaConstant.forByte(TEST_OBJECT.byteField), 8},
112 new Object[]{JavaKind.Short, TEST_CONSTANT, shortFieldOffset,
113 JavaConstant.forShort(TEST_OBJECT.shortField), 16},
114 new Object[]{JavaKind.Int, TEST_CONSTANT, intFieldOffset,
115 JavaConstant.forInt(TEST_OBJECT.intField), 32},
116 new Object[]{JavaKind.Long, TEST_CONSTANT, longFieldOffset,
117 JavaConstant.forLong(TEST_OBJECT.longField), 64},
118 new Object[]{JavaKind.Float, TEST_CONSTANT, floatFieldOffset,
119 JavaConstant.forFloat(TEST_OBJECT.floatField), 32},
120 new Object[]{JavaKind.Double, TEST_CONSTANT,
121 doubleFieldOffset,
122 JavaConstant.forDouble(TEST_OBJECT.doubleField), 64},
123 new Object[]{JavaKind.Char, TEST_CONSTANT, charFieldOffset,
124 JavaConstant.forChar(TEST_OBJECT.charField), 16}};
125 }
126
127 @DataProvider(name = "negative")
128 public static Object[][] getNegativeJavaKinds() {
129 return new Object[][]{
130 new Object[]{JavaKind.Void, JavaConstant.NULL_POINTER},
131 new Object[]{JavaKind.Illegal, JavaConstant.INT_1}};
132 }
133
134 private static class TestClass {
135 public final boolean booleanField = true;
136 public final byte byteField = 2;
137 public final short shortField = 3;
138 public final int intField = 4;
139 public final long longField = 5L;
140 public final double doubleField = 6.0d;
141 public final float floatField = 7.0f;
142 public final char charField = 'a';
143 public final String stringField = "abc";
144 }
145 }