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 * ../common/PublicMetaspaceWrapperObject.java
31 * @build compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
32 * @run main ClassFileInstaller
33 * sun.hotspot.WhiteBox
34 * sun.hotspot.WhiteBox$WhiteBoxPermission
35 * jdk.vm.ci.hotspot.CompilerToVMHelper
36 * jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject
37 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockExperimentalVMOptions
38 * -XX:+EnableJVMCI -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
39 * -XX:+UseCompressedOops
40 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
41 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockExperimentalVMOptions
42 * -XX:+EnableJVMCI -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
43 * -XX:-UseCompressedOops
44 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
45 */
46
47 package compiler.jvmci.compilerToVM;
48
49 import java.lang.reflect.Field;
50 import jdk.vm.ci.meta.ConstantPool;
51 import jdk.vm.ci.hotspot.CompilerToVMHelper;
52 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
53 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
54 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject;
55 import jdk.test.lib.Asserts;
56 import jdk.test.lib.Utils;
57 import sun.hotspot.WhiteBox;
58 import sun.misc.Unsafe;
59
60 public class GetResolvedJavaTypeTest {
61 private static enum TestCase {
62 NULL_BASE {
63 @Override
64 HotSpotResolvedObjectType getResolvedJavaType() {
65 return CompilerToVMHelper.getResolvedJavaType(
66 null, getPtrToKlass(), COMPRESSED);
67 }
68 },
69 JAVA_METHOD_BASE {
70 @Override
71 HotSpotResolvedObjectType getResolvedJavaType() {
72 HotSpotResolvedJavaMethod methodInstance
73 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
74 TEST_CLASS, 0);
75 Field field;
76 try {
77 // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod
78 field = methodInstance.getClass()
79 .getDeclaredField("metaspaceMethod");
80 field.setAccessible(true);
81 field.set(methodInstance, getPtrToKlass());
82 } catch (ReflectiveOperationException e) {
83 throw new Error("TEST BUG : " + e, e);
84 }
85
86 return CompilerToVMHelper.getResolvedJavaType(methodInstance,
87 0L, COMPRESSED);
88 }
89 },
90 CONSTANT_POOL_BASE {
91 @Override
92 HotSpotResolvedObjectType getResolvedJavaType() {
93 ConstantPool cpInst;
94 try {
95 cpInst = CompilerToVMHelper.getConstantPool(null,
96 getPtrToKlass());
97 // jdk.vm.ci.hotspot.HotSpotConstantPool.metaspaceConstantPool
98 Field field = cpInst.getClass()
99 .getDeclaredField("metaspaceConstantPool");
100 field.setAccessible(true);
101 field.set(cpInst, getPtrToKlass());
102 } catch (ReflectiveOperationException e) {
103 throw new Error("TESTBUG : " + e, e);
104 }
105 return CompilerToVMHelper.getResolvedJavaType(cpInst,
106 0L, COMPRESSED);
107 }
108 },
109 CONSTANT_POOL_BASE_IN_TWO {
110 @Override
111 HotSpotResolvedObjectType getResolvedJavaType() {
112 long ptr = getPtrToKlass();
113 ConstantPool cpInst = HotSpotResolvedObjectType
114 .fromObjectClass(TEST_CLASS)
115 .getConstantPool();
116 try {
117 Field field = cpInst.getClass()
118 .getDeclaredField("metaspaceConstantPool");
119 field.setAccessible(true);
120 field.set(cpInst, ptr / 2L);
121 } catch (ReflectiveOperationException e) {
122 throw new Error("TESTBUG : " + e, e);
123 }
124 return CompilerToVMHelper.getResolvedJavaType(cpInst,
125 ptr - ptr / 2L, COMPRESSED);
126 }
127 },
128 CONSTANT_POOL_BASE_ZERO {
129 @Override
130 HotSpotResolvedObjectType getResolvedJavaType() {
131 long ptr = getPtrToKlass();
132 ConstantPool cpInst = HotSpotResolvedObjectType
133 .fromObjectClass(TEST_CLASS)
134 .getConstantPool();
135 try {
136 Field field = cpInst.getClass()
137 .getDeclaredField("metaspaceConstantPool");
138 field.setAccessible(true);
139 field.set(cpInst, 0L);
140 } catch (ReflectiveOperationException e) {
141 throw new Error("TESTBUG : " + e, e);
142 }
143 return CompilerToVMHelper.getResolvedJavaType(cpInst,
144 ptr, COMPRESSED);
145 }
146 },
147 OBJECT_TYPE_BASE {
148 @Override
149 HotSpotResolvedObjectType getResolvedJavaType() {
150 HotSpotResolvedObjectType type
151 = HotSpotResolvedObjectType.fromObjectClass(
152 OBJECT_TYPE_BASE.getClass());
153 long ptrToClass = UNSAFE.getKlassPointer(OBJECT_TYPE_BASE);
154 return CompilerToVMHelper.getResolvedJavaType(type,
155 getPtrToKlass() - ptrToClass, COMPRESSED);
156 }
157 },
158 ;
159 abstract HotSpotResolvedObjectType getResolvedJavaType();
160 }
161
162 private static final Unsafe UNSAFE = Utils.getUnsafe();
163 private static final WhiteBox WB = WhiteBox.getWhiteBox();
164 private static final long PTR = UNSAFE.getKlassPointer(
165 new GetResolvedJavaTypeTest());
166 private static final Class TEST_CLASS = GetResolvedJavaTypeTest.class;
167 /* a compressed parameter for tested method is set to false because
168 unsafe.getKlassPointer always returns uncompressed pointer */
169 private static final boolean COMPRESSED = false;
170 // = WB.getBooleanVMFlag("UseCompressedClassPointers");
171
172 private static long getPtrToKlass() {
173 Field field;
174 try {
175 field = TEST_CLASS.getDeclaredField("PTR");
176 } catch (NoSuchFieldException e) {
177 throw new Error("TEST BUG : " + e, e);
178 }
179 Object base = UNSAFE.staticFieldBase(field);
180 return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
181 }
182
183 public void test(TestCase testCase) {
184 System.out.println(testCase.name());
185 HotSpotResolvedObjectType type = testCase.getResolvedJavaType();
186 Asserts.assertEQ(TEST_CLASS,
187 CompilerToVMHelper.getMirror(type),
188 testCase + " : unexpected class returned");
189 }
190
191 public static void main(String[] args) {
192 GetResolvedJavaTypeTest test = new GetResolvedJavaTypeTest();
193 for (TestCase testCase : TestCase.values()) {
194 test.test(testCase);
195 }
196 testObjectBase();
197 testMetaspaceWrapperBase();
198 }
199
200 private static void testMetaspaceWrapperBase() {
201 try {
202 HotSpotResolvedObjectType type
203 = CompilerToVMHelper.getResolvedJavaType(
204 new PublicMetaspaceWrapperObject() {
205 @Override
206 public long getMetaspacePointer() {
207 return getPtrToKlass();
208 }
209 }, 0L, COMPRESSED);
210 throw new AssertionError("Test METASPACE_WRAPPER_BASE."
211 + " Expected IllegalArgumentException has not been caught");
212 } catch (IllegalArgumentException iae) {
213 // expected
214 }
215 }
216
217 private static void testObjectBase() {
218 try {
219 HotSpotResolvedObjectType type
220 = CompilerToVMHelper.getResolvedJavaType(new Object(), 0L,
221 COMPRESSED);
222 throw new AssertionError("Test OBJECT_BASE."
223 + " Expected IllegalArgumentException has not been caught");
224 } catch (IllegalArgumentException iae) {
225 // expected
226 }
227 }
228 }