1 /*
2 * Copyright (c) 2013, 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 package jdk.vm.ci.runtime.test;
24
25 import jdk.internal.misc.Unsafe;
26 import jdk.vm.ci.meta.ConstantReflectionProvider;
27 import jdk.vm.ci.meta.JavaConstant;
28 import jdk.vm.ci.meta.MetaAccessProvider;
29 import jdk.vm.ci.meta.ResolvedJavaField;
30 import jdk.vm.ci.meta.ResolvedJavaType;
31 import jdk.vm.ci.runtime.JVMCI;
32 import org.junit.Test;
33
34 import java.io.Serializable;
35 import java.lang.reflect.Array;
36 import java.lang.reflect.Field;
37 import java.lang.reflect.Method;
38 import java.util.AbstractCollection;
39 import java.util.AbstractList;
40 import java.util.ArrayDeque;
41 import java.util.ArrayList;
42 import java.util.Collection;
43 import java.util.Collections;
44 import java.util.HashMap;
45 import java.util.HashSet;
46 import java.util.IdentityHashMap;
47 import java.util.LinkedHashMap;
48 import java.util.LinkedList;
49 import java.util.List;
50 import java.util.Map;
51 import java.util.Queue;
52 import java.util.Set;
53 import java.util.TreeMap;
54 import java.util.stream.Collectors;
55
56 import static java.lang.reflect.Modifier.isFinal;
57 import static java.lang.reflect.Modifier.isStatic;
58
59 /**
60 * Context for type related tests.
61 */
62 public class TypeUniverse {
63
64 public static final Unsafe unsafe;
65 public static final double JAVA_VERSION = Double.valueOf(System.getProperty("java.specification.version"));
66
67 public static final MetaAccessProvider metaAccess = JVMCI.getRuntime().getHostJVMCIBackend().getMetaAccess();
68 public static final ConstantReflectionProvider constantReflection = JVMCI.getRuntime().getHostJVMCIBackend().getConstantReflection();
69 public static final Collection<Class<?>> classes = new HashSet<>();
70 public static final Set<ResolvedJavaType> javaTypes;
71 public static final Map<Class<?>, Class<?>> arrayClasses = new HashMap<>();
72
73 private static List<ConstantValue> constants;
74
75 public class InnerClass {
76
77 }
78
79 public static class InnerStaticClass {
80
81 }
82
83 public static final class InnerStaticFinalClass {
84
85 }
86
87 private class PrivateInnerClass {
88
89 }
90
91 protected class ProtectedInnerClass {
92
93 }
94
95 static {
96 Unsafe theUnsafe = null;
97 try {
98 theUnsafe = Unsafe.getUnsafe();
99 } catch (Exception e) {
100 try {
101 Field theUnsafeField = Unsafe.class.getDeclaredField("theUnsafe");
102 theUnsafeField.setAccessible(true);
103 theUnsafe = (Unsafe) theUnsafeField.get(null);
104 } catch (Exception e1) {
105 throw (InternalError) new InternalError("unable to initialize unsafe").initCause(e1);
106 }
107 }
108 unsafe = theUnsafe;
109
110 Class<?>[] initialClasses = {void.class, boolean.class, byte.class, short.class, char.class, int.class, float.class, long.class, double.class, Object.class, Class.class, boolean[].class,
111 byte[].class, short[].class, char[].class, int[].class, float[].class, long[].class, double[].class, Object[].class, Class[].class, List[].class, boolean[][].class,
112 byte[][].class, short[][].class, char[][].class, int[][].class, float[][].class, long[][].class, double[][].class, Object[][].class, Class[][].class, List[][].class,
113 ClassLoader.class, String.class, Serializable.class, Cloneable.class, Test.class, TestMetaAccessProvider.class, List.class, Collection.class, Map.class, Queue.class,
114 HashMap.class, LinkedHashMap.class, IdentityHashMap.class, AbstractCollection.class, AbstractList.class, ArrayList.class, InnerClass.class, InnerStaticClass.class,
115 InnerStaticFinalClass.class, PrivateInnerClass.class, ProtectedInnerClass.class};
116 for (Class<?> c : initialClasses) {
117 addClass(c);
118 }
119
120 javaTypes = Collections.unmodifiableSet(classes.stream().map(c -> metaAccess.lookupJavaType(c)).collect(Collectors.toSet()));
121 }
122
123 static class ConstantsUniverse {
124 static final Object[] ARRAYS = classes.stream().map(c -> c != void.class && !c.isArray() ? Array.newInstance(c, 42) : null).filter(o -> o != null).collect(Collectors.toList()).toArray();
125 static final Object CONST1 = new ArrayList<>();
126 static final Object CONST2 = new ArrayList<>();
127 static final Object CONST3 = new IdentityHashMap<>();
128 static final Object CONST4 = new LinkedHashMap<>();
129 static final Object CONST5 = new TreeMap<>();
130 static final Object CONST6 = new ArrayDeque<>();
131 static final Object CONST7 = new LinkedList<>();
132 static final Object CONST8 = "a string";
133 static final Object CONST9 = 42;
134 static final Object CONST10 = String.class;
135 static final Object CONST11 = String[].class;
136 }
137
138 public static List<ConstantValue> constants() {
139 if (constants == null) {
140 List<ConstantValue> res = readConstants(JavaConstant.class);
141 res.addAll(readConstants(ConstantsUniverse.class));
142 constants = res;
143 }
144 return constants;
145 }
146
147 public static class ConstantValue {
148 public final String name;
149 public final JavaConstant value;
150 public final Object boxed;
151
152 public ConstantValue(String name, JavaConstant value, Object boxed) {
153 this.name = name;
154 this.value = value;
155 this.boxed = boxed;
156 }
157
158 @Override
159 public String toString() {
160 return name + "=" + value;
161 }
162
163 public String getSimpleName() {
164 return name.substring(name.lastIndexOf('.') + 1);
165 }
166 }
167
168 /**
169 * Reads the value of all {@code static final} fields from a given class into an array of
170 * {@link ConstantValue}s.
171 */
172 public static List<ConstantValue> readConstants(Class<?> fromClass) {
173 try {
174 List<ConstantValue> res = new ArrayList<>();
175 for (Field field : fromClass.getDeclaredFields()) {
176 if (isStatic(field.getModifiers()) && isFinal(field.getModifiers())) {
177 ResolvedJavaField javaField = metaAccess.lookupJavaField(field);
178 Object boxed = field.get(null);
179 if (boxed instanceof JavaConstant) {
180 res.add(new ConstantValue(javaField.format("%H.%n"), (JavaConstant) boxed, boxed));
181 } else {
182 JavaConstant value = constantReflection.readFieldValue(javaField, null);
183 if (value != null) {
184 res.add(new ConstantValue(javaField.format("%H.%n"), value, boxed));
185 if (boxed instanceof Object[]) {
186 Object[] arr = (Object[]) boxed;
187 for (int i = 0; i < arr.length; i++) {
188 JavaConstant element = constantReflection.readArrayElement(value, i);
189 if (element != null) {
190 res.add(new ConstantValue(javaField.format("%H.%n[" + i + "]"), element, arr[i]));
191 }
192 }
193 }
194 }
195 }
196 }
197 }
198 return res;
199 } catch (Exception e) {
200 throw new AssertionError(e);
201 }
202 }
203
204 public synchronized Class<?> getArrayClass(Class<?> componentType) {
205 Class<?> arrayClass = arrayClasses.get(componentType);
206 if (arrayClass == null) {
207 arrayClass = Array.newInstance(componentType, 0).getClass();
208 arrayClasses.put(componentType, arrayClass);
209 }
210 return arrayClass;
211 }
212
213 public static int dimensions(Class<?> c) {
214 if (c.getComponentType() != null) {
215 return 1 + dimensions(c.getComponentType());
216 }
217 return 0;
218 }
219
220 private static void addClass(Class<?> c) {
221 if (classes.add(c)) {
222 if (c.getSuperclass() != null) {
223 addClass(c.getSuperclass());
224 }
225 for (Class<?> sc : c.getInterfaces()) {
226 addClass(sc);
227 }
228 for (Class<?> dc : c.getDeclaredClasses()) {
229 addClass(dc);
230 }
231 for (Method m : c.getDeclaredMethods()) {
232 addClass(m.getReturnType());
233 for (Class<?> p : m.getParameterTypes()) {
234 addClass(p);
235 }
236 }
237
238 if (c != void.class && dimensions(c) < 2) {
239 Class<?> arrayClass = Array.newInstance(c, 0).getClass();
240 arrayClasses.put(c, arrayClass);
241 addClass(arrayClass);
242 }
243 }
244 }
245 }