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 static java.lang.reflect.Modifier.isFinal;
26 import static java.lang.reflect.Modifier.isStatic;
27
28 import java.io.Serializable;
29 import java.lang.reflect.Array;
30 import java.lang.reflect.Field;
31 import java.lang.reflect.Method;
32 import java.util.AbstractCollection;
33 import java.util.AbstractList;
34 import java.util.ArrayDeque;
35 import java.util.ArrayList;
36 import java.util.Collection;
37 import java.util.Collections;
38 import java.util.HashMap;
39 import java.util.HashSet;
40 import java.util.IdentityHashMap;
41 import java.util.LinkedHashMap;
42 import java.util.LinkedList;
43 import java.util.List;
44 import java.util.Map;
45 import java.util.Queue;
46 import java.util.Set;
47 import java.util.TreeMap;
48 import java.util.stream.Collectors;
49
50 import jdk.vm.ci.meta.ConstantReflectionProvider;
51 import jdk.vm.ci.meta.JavaConstant;
52 import jdk.vm.ci.meta.MetaAccessProvider;
53 import jdk.vm.ci.meta.ResolvedJavaField;
54 import jdk.vm.ci.meta.ResolvedJavaType;
55 import jdk.vm.ci.runtime.JVMCI;
56
57 import org.junit.Test;
58
59 import jdk.internal.misc.Unsafe;
60
61 //JaCoCo Exclude
62
63 /**
64 * Context for type related tests.
65 */
66 public class TypeUniverse {
67
68 public static final Unsafe unsafe;
69 public static final double JAVA_VERSION = Double.valueOf(System.getProperty("java.specification.version"));
70
71 public static final MetaAccessProvider metaAccess = JVMCI.getRuntime().getHostJVMCIBackend().getMetaAccess();
72 public static final ConstantReflectionProvider constantReflection = JVMCI.getRuntime().getHostJVMCIBackend().getConstantReflection();
73 public static final Collection<Class<?>> classes = new HashSet<>();
74 public static final Set<ResolvedJavaType> javaTypes;
75 public static final Map<Class<?>, Class<?>> arrayClasses = new HashMap<>();
76
77 private static List<ConstantValue> constants;
78
79 public class InnerClass {
80
81 }
82
83 public static class InnerStaticClass {
84
85 }
86
87 public static final class InnerStaticFinalClass {
88
89 }
90
91 private class PrivateInnerClass {
92
93 }
94
95 protected class ProtectedInnerClass {
96
97 }
98
99 static {
100 Unsafe theUnsafe = null;
101 try {
102 theUnsafe = Unsafe.getUnsafe();
103 } catch (Exception e) {
104 try {
105 Field theUnsafeField = Unsafe.class.getDeclaredField("theUnsafe");
106 theUnsafeField.setAccessible(true);
107 theUnsafe = (Unsafe) theUnsafeField.get(null);
108 } catch (Exception e1) {
109 throw (InternalError) new InternalError("unable to initialize unsafe").initCause(e1);
110 }
111 }
112 unsafe = theUnsafe;
113
114 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,
115 byte[].class, short[].class, char[].class, int[].class, float[].class, long[].class, double[].class, Object[].class, Class[].class, List[].class, boolean[][].class,
116 byte[][].class, short[][].class, char[][].class, int[][].class, float[][].class, long[][].class, double[][].class, Object[][].class, Class[][].class, List[][].class,
117 ClassLoader.class, String.class, Serializable.class, Cloneable.class, Test.class, TestMetaAccessProvider.class, List.class, Collection.class, Map.class, Queue.class,
118 HashMap.class, LinkedHashMap.class, IdentityHashMap.class, AbstractCollection.class, AbstractList.class, ArrayList.class, InnerClass.class, InnerStaticClass.class,
119 InnerStaticFinalClass.class, PrivateInnerClass.class, ProtectedInnerClass.class};
120 for (Class<?> c : initialClasses) {
121 addClass(c);
122 }
123
124 javaTypes = Collections.unmodifiableSet(classes.stream().map(c -> metaAccess.lookupJavaType(c)).collect(Collectors.toSet()));
125 }
126
127 static class ConstantsUniverse {
128 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();
129 static final Object CONST1 = new ArrayList<>();
130 static final Object CONST2 = new ArrayList<>();
131 static final Object CONST3 = new IdentityHashMap<>();
132 static final Object CONST4 = new LinkedHashMap<>();
133 static final Object CONST5 = new TreeMap<>();
134 static final Object CONST6 = new ArrayDeque<>();
135 static final Object CONST7 = new LinkedList<>();
136 static final Object CONST8 = "a string";
137 static final Object CONST9 = 42;
138 static final Object CONST10 = String.class;
139 static final Object CONST11 = String[].class;
140 }
141
142 public static List<ConstantValue> constants() {
143 if (constants == null) {
144 List<ConstantValue> res = readConstants(JavaConstant.class);
145 res.addAll(readConstants(ConstantsUniverse.class));
146 constants = res;
147 }
148 return constants;
149 }
150
151 public static class ConstantValue {
152 public final String name;
153 public final JavaConstant value;
154 public final Object boxed;
155
156 public ConstantValue(String name, JavaConstant value, Object boxed) {
157 this.name = name;
158 this.value = value;
159 this.boxed = boxed;
160 }
161
162 @Override
163 public String toString() {
164 return name + "=" + value;
165 }
166
167 public String getSimpleName() {
168 return name.substring(name.lastIndexOf('.') + 1);
169 }
170 }
171
172 /**
173 * Reads the value of all {@code static final} fields from a given class into an array of
174 * {@link ConstantValue}s.
175 */
176 public static List<ConstantValue> readConstants(Class<?> fromClass) {
177 try {
178 List<ConstantValue> res = new ArrayList<>();
179 for (Field field : fromClass.getDeclaredFields()) {
180 if (isStatic(field.getModifiers()) && isFinal(field.getModifiers())) {
181 ResolvedJavaField javaField = metaAccess.lookupJavaField(field);
182 Object boxed = field.get(null);
183 if (boxed instanceof JavaConstant) {
184 res.add(new ConstantValue(javaField.format("%H.%n"), (JavaConstant) boxed, boxed));
185 } else {
186 JavaConstant value = constantReflection.readFieldValue(javaField, null);
187 if (value != null) {
188 res.add(new ConstantValue(javaField.format("%H.%n"), value, boxed));
189 if (boxed instanceof Object[]) {
190 Object[] arr = (Object[]) boxed;
191 for (int i = 0; i < arr.length; i++) {
192 JavaConstant element = constantReflection.readArrayElement(value, i);
193 if (element != null) {
194 res.add(new ConstantValue(javaField.format("%H.%n[" + i + "]"), element, arr[i]));
195 }
196 }
197 }
198 }
199 }
200 }
201 }
202 return res;
203 } catch (Exception e) {
204 throw new AssertionError(e);
205 }
206 }
207
208 public synchronized Class<?> getArrayClass(Class<?> componentType) {
209 Class<?> arrayClass = arrayClasses.get(componentType);
210 if (arrayClass == null) {
211 arrayClass = Array.newInstance(componentType, 0).getClass();
212 arrayClasses.put(componentType, arrayClass);
213 }
214 return arrayClass;
215 }
216
217 public static int dimensions(Class<?> c) {
218 if (c.getComponentType() != null) {
219 return 1 + dimensions(c.getComponentType());
220 }
221 return 0;
222 }
223
224 private static void addClass(Class<?> c) {
225 if (classes.add(c)) {
226 if (c.getSuperclass() != null) {
227 addClass(c.getSuperclass());
228 }
229 for (Class<?> sc : c.getInterfaces()) {
230 addClass(sc);
231 }
232 for (Class<?> dc : c.getDeclaredClasses()) {
233 addClass(dc);
234 }
235 for (Method m : c.getDeclaredMethods()) {
236 addClass(m.getReturnType());
237 for (Class<?> p : m.getParameterTypes()) {
238 addClass(p);
239 }
240 }
241
242 if (c != void.class && dimensions(c) < 2) {
243 Class<?> arrayClass = Array.newInstance(c, 0).getClass();
244 arrayClasses.put(c, arrayClass);
245 addClass(arrayClass);
246 }
247 }
248 }
249 }