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