1 /*
2 * Copyright (c) 2015, 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 * @test
26 * @bug 8136421
27 * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
28 * @library / /testlibrary /../../test/lib
29 * @compile ../common/CompilerToVMHelper.java
30 * @build compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
31 * @run main ClassFileInstaller
32 * sun.hotspot.WhiteBox
33 * sun.hotspot.WhiteBox$WhiteBoxPermission
34 * jdk.vm.ci.hotspot.CompilerToVMHelper
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockExperimentalVMOptions
36 * -XX:+EnableJVMCI -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
37 * -XX:+UseCompressedOops
38 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
39 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockExperimentalVMOptions
40 * -XX:+EnableJVMCI -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
41 * -XX:-UseCompressedOops
42 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
43 */
44
45 package compiler.jvmci.compilerToVM;
46
47 import java.lang.reflect.Field;
48 import jdk.vm.ci.hotspot.CompilerToVMHelper;
49 import jdk.vm.ci.hotspot.HotSpotConstantPool;
50 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl;
51 import jdk.vm.ci.hotspot.HotSpotResolvedObjectTypeImpl;
52 import jdk.vm.ci.hotspot.MetaspaceWrapperObject;
53 import jdk.test.lib.Asserts;
54 import jdk.test.lib.Utils;
55 import sun.hotspot.WhiteBox;
56 import sun.misc.Unsafe;
57
58 public class GetResolvedJavaTypeTest {
59 private static enum TestCase {
60 NULL_BASE {
61 @Override
62 HotSpotResolvedObjectTypeImpl getResolvedJavaType() {
63 return CompilerToVMHelper.getResolvedJavaType(
64 null, getPtrToKlass(), COMPRESSED);
65 }
66 },
67 JAVA_METHOD_BASE {
68 @Override
69 HotSpotResolvedObjectTypeImpl getResolvedJavaType() {
70 HotSpotResolvedJavaMethodImpl methodInstance
71 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
72 TEST_CLASS, 0);
73 Field field;
74 try {
75 field = HotSpotResolvedJavaMethodImpl
76 .class.getDeclaredField("metaspaceMethod");
77 field.setAccessible(true);
78 field.set(methodInstance, getPtrToKlass());
79 } catch (ReflectiveOperationException e) {
80 throw new Error("TEST BUG : " + e, e);
81 }
82
83 return CompilerToVMHelper.getResolvedJavaType(methodInstance,
84 0L, COMPRESSED);
85 }
86 },
87 CONSTANT_POOL_BASE {
88 @Override
89 HotSpotResolvedObjectTypeImpl getResolvedJavaType() {
90 HotSpotConstantPool cpInst;
91 try {
92 cpInst = CompilerToVMHelper.getConstantPool(null,
93 getPtrToKlass());
94 Field field = HotSpotConstantPool.class
95 .getDeclaredField("metaspaceConstantPool");
96 field.setAccessible(true);
97 field.set(cpInst, getPtrToKlass());
98 } catch (ReflectiveOperationException e) {
99 throw new Error("TESTBUG : " + e.getMessage(), e);
100 }
101 return CompilerToVMHelper.getResolvedJavaType(cpInst,
102 0L, COMPRESSED);
103 }
104 },
105 CONSTANT_POOL_BASE_IN_TWO {
106 @Override
107 HotSpotResolvedObjectTypeImpl getResolvedJavaType() {
108 long ptr = getPtrToKlass();
109 HotSpotConstantPool cpInst = HotSpotResolvedObjectTypeImpl
110 .fromObjectClass(TEST_CLASS).getConstantPool();
111 try {
112 Field field = HotSpotConstantPool.class
113 .getDeclaredField("metaspaceConstantPool");
114 field.setAccessible(true);
115 field.set(cpInst, ptr / 2L);
116 } catch (ReflectiveOperationException e) {
117 throw new Error("TESTBUG : " + e.getMessage(), e);
118 }
119 return CompilerToVMHelper.getResolvedJavaType(cpInst,
120 ptr - ptr / 2L, COMPRESSED);
121 }
122 },
123 CONSTANT_POOL_BASE_ZERO {
124 @Override
125 HotSpotResolvedObjectTypeImpl getResolvedJavaType() {
126 long ptr = getPtrToKlass();
127 HotSpotConstantPool cpInst = HotSpotResolvedObjectTypeImpl
128 .fromObjectClass(TEST_CLASS).getConstantPool();
129 try {
130 Field field = HotSpotConstantPool.class
131 .getDeclaredField("metaspaceConstantPool");
132 field.setAccessible(true);
133 field.set(cpInst, 0L);
134 } catch (ReflectiveOperationException e) {
135 throw new Error("TESTBUG : " + e.getMessage(), e);
136 }
137 return CompilerToVMHelper.getResolvedJavaType(cpInst,
138 ptr, COMPRESSED);
139 }
140 },
141 OBJECT_TYPE_BASE {
142 @Override
143 HotSpotResolvedObjectTypeImpl getResolvedJavaType() {
144 HotSpotResolvedObjectTypeImpl type
145 = HotSpotResolvedObjectTypeImpl.fromObjectClass(
146 OBJECT_TYPE_BASE.getClass());
147 long ptrToClass = UNSAFE.getKlassPointer(OBJECT_TYPE_BASE);
148 return CompilerToVMHelper.getResolvedJavaType(type,
149 getPtrToKlass() - ptrToClass, COMPRESSED);
150 }
151 },
152 ;
153 abstract HotSpotResolvedObjectTypeImpl getResolvedJavaType();
154 }
155
156 private static final Unsafe UNSAFE = Utils.getUnsafe();
157 private static final WhiteBox WB = WhiteBox.getWhiteBox();
158 private static final long PTR = UNSAFE.getKlassPointer(
159 new GetResolvedJavaTypeTest());
160 private static final Class TEST_CLASS = GetResolvedJavaTypeTest.class;
161 /* a compressed parameter for tested method is set to false because
162 unsafe.getKlassPointer always returns uncompressed pointer */
163 private static final boolean COMPRESSED = false;
164 // = WB.getBooleanVMFlag("UseCompressedClassPointers");
165
166 private static long getPtrToKlass() {
167 Field field;
168 try {
169 field = TEST_CLASS.getDeclaredField("PTR");
170 } catch (NoSuchFieldException e) {
171 throw new Error("TEST BUG : " + e, e);
172 }
173 Object base = UNSAFE.staticFieldBase(field);
174 return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
175 }
176
177 public void test(TestCase testCase) {
178 System.out.println(testCase.name());
179 HotSpotResolvedObjectTypeImpl type = testCase.getResolvedJavaType();
180 Asserts.assertEQ(type.mirror(), TEST_CLASS, testCase +
181 " Unexpected Class returned by getResolvedJavaType");
182 }
183
184 public static void main(String[] args) {
185 GetResolvedJavaTypeTest test = new GetResolvedJavaTypeTest();
186 for (TestCase testCase : TestCase.values()) {
187 test.test(testCase);
188 }
189 testObjectBase();
190 testMetaspaceWrapperBase();
191 }
192
193 private static void testMetaspaceWrapperBase() {
194 try {
195 HotSpotResolvedObjectTypeImpl type
196 = CompilerToVMHelper.getResolvedJavaType(
197 new MetaspaceWrapperObject() {
198 @Override
199 public long getMetaspacePointer() {
200 return getPtrToKlass();
201 }
202 }, 0L, COMPRESSED);
203 throw new AssertionError("Test METASPACE_WRAPPER_BASE."
204 + " Expected IllegalArgumentException has not been caught");
205 } catch (IllegalArgumentException iae) {
206 // expected
207 }
208 }
209
210 private static void testObjectBase() {
211 try {
212 HotSpotResolvedObjectTypeImpl type
213 = CompilerToVMHelper.getResolvedJavaType(new Object(), 0L,
214 COMPRESSED);
215 throw new AssertionError("Test OBJECT_BASE."
216 + " Expected IllegalArgumentException has not been caught");
217 } catch (IllegalArgumentException iae) {
218 // expected
219 }
220 }
221 }