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 /*
26 * @test
27 * @bug 8136421
28 * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
29 * @library /testlibrary /../../test/lib /
30 * @compile ../common/CompilerToVMHelper.java ../common/PublicMetaspaceWrapperObject.java
31 * @build sun.hotspot.WhiteBox
32 * compiler.jvmci.compilerToVM.GetConstantPoolTest
33 * @run main ClassFileInstaller 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:+UnlockDiagnosticVMOptions
38 * -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions
39 * -XX:+EnableJVMCI compiler.jvmci.compilerToVM.GetConstantPoolTest
40 */
41 package compiler.jvmci.compilerToVM;
42
43 import java.lang.reflect.Field;
44 import jdk.vm.ci.meta.ConstantPool;
45 import jdk.vm.ci.hotspot.CompilerToVMHelper;
46 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
47 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
48 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject;
49 import jdk.test.lib.Utils;
50 import sun.hotspot.WhiteBox;
51 import sun.misc.Unsafe;
52
53 /**
54 * Tests for jdk.vm.ci.hotspot.CompilerToVM::getConstantPool method
55 */
56 public class GetConstantPoolTest {
57 private static enum TestCase {
58 NULL_BASE {
59 @Override
60 ConstantPool getConstantPool() {
61 return CompilerToVMHelper.getConstantPool(null,
62 getPtrToCpAddress());
63 }
64 },
65 JAVA_METHOD_BASE {
66 @Override
67 ConstantPool getConstantPool() {
68 HotSpotResolvedJavaMethod methodInstance
69 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
70 TEST_CLASS, 0);
71 Field field;
72 try {
73 // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod
74 field = methodInstance.getClass()
75 .getDeclaredField("metaspaceMethod");
76 field.setAccessible(true);
77 field.set(methodInstance, getPtrToCpAddress());
78 } catch (ReflectiveOperationException e) {
79 throw new Error("TESTBUG : " + e, e);
80 }
81
82 return CompilerToVMHelper.getConstantPool(methodInstance, 0L);
83 }
84 },
85 CONSTANT_POOL_BASE {
86 @Override
87 ConstantPool getConstantPool() {
88 ConstantPool cpInst;
89 try {
90 cpInst = CompilerToVMHelper.getConstantPool(null,
91 getPtrToCpAddress());
92 Field field = CompilerToVMHelper.HotSpotConstantPoolClass()
93 .getDeclaredField("metaspaceConstantPool");
94 field.setAccessible(true);
95 field.set(cpInst, getPtrToCpAddress());
96 } catch (ReflectiveOperationException e) {
97 throw new Error("TESTBUG : " + e.getMessage(), e);
98 }
99 return CompilerToVMHelper.getConstantPool(cpInst, 0L);
100 }
101 },
102 CONSTANT_POOL_BASE_IN_TWO {
103 @Override
104 ConstantPool getConstantPool() {
105 long ptr = getPtrToCpAddress();
106 ConstantPool cpInst;
107 try {
108 cpInst = CompilerToVMHelper.getConstantPool(null, ptr);
109 Field field = CompilerToVMHelper.HotSpotConstantPoolClass()
110 .getDeclaredField("metaspaceConstantPool");
111 field.setAccessible(true);
112 field.set(cpInst, ptr / 2L);
113 } catch (ReflectiveOperationException e) {
114 throw new Error("TESTBUG : " + e.getMessage(), e);
115 }
116 return CompilerToVMHelper.getConstantPool(cpInst,
117 ptr - ptr / 2L);
118 }
119 },
120 CONSTANT_POOL_BASE_ZERO {
121 @Override
122 ConstantPool getConstantPool() {
123 long ptr = getPtrToCpAddress();
124 ConstantPool cpInst;
125 try {
126 cpInst = CompilerToVMHelper.getConstantPool(null, ptr);
127 Field field = CompilerToVMHelper.HotSpotConstantPoolClass()
128 .getDeclaredField("metaspaceConstantPool");
129 field.setAccessible(true);
130 field.set(cpInst, 0L);
131 } catch (ReflectiveOperationException e) {
132 throw new Error("TESTBUG : " + e.getMessage(), e);
133 }
134 return CompilerToVMHelper.getConstantPool(cpInst, ptr);
135 }
136 },
137 OBJECT_TYPE_BASE {
138 @Override
139 ConstantPool getConstantPool() {
140 HotSpotResolvedObjectType type
141 = HotSpotResolvedObjectType.fromObjectClass(
142 OBJECT_TYPE_BASE.getClass());
143 long ptrToClass = UNSAFE.getKlassPointer(OBJECT_TYPE_BASE);
144 return CompilerToVMHelper.getConstantPool(type,
145 getPtrToCpAddress() - ptrToClass);
146 }
147 },
148 ;
149 abstract ConstantPool getConstantPool();
150 }
151
152 private static final WhiteBox WB = WhiteBox.getWhiteBox();
153 private static final Unsafe UNSAFE = Utils.getUnsafe();
154
155 private static final Class TEST_CLASS = GetConstantPoolTest.class;
156 private static final long CP_ADDRESS
157 = WB.getConstantPool(GetConstantPoolTest.class);
158
159 public void test(TestCase testCase) {
160 System.out.println(testCase.name());
161 ConstantPool cp = testCase.getConstantPool();
162 String cpStringRep = cp.toString();
163 String cpClassSimpleName
164 = CompilerToVMHelper.HotSpotConstantPoolClass().getSimpleName();
165 if (!cpStringRep.contains(cpClassSimpleName)
166 || !cpStringRep.contains(TEST_CLASS.getName())) {
167 String msg = String.format("%s : "
168 + " Constant pool is not valid."
169 + " String representation should contain \"%s\" and \"%s\"",
170 testCase.name(), cpClassSimpleName,
171 TEST_CLASS.getName());
172 throw new AssertionError(msg);
173 }
174 }
175
176 public static void main(String[] args) {
177 GetConstantPoolTest test = new GetConstantPoolTest();
178 for (TestCase testCase : TestCase.values()) {
179 test.test(testCase);
180 }
181 testObjectBase();
182 testMetaspaceWrapperBase();
183 }
184
185 private static void testObjectBase() {
186 try {
187 Object cp = CompilerToVMHelper.getConstantPool(new Object(), 0L);
188 throw new AssertionError("Test OBJECT_BASE."
189 + " Expected IllegalArgumentException has not been caught");
190 } catch (IllegalArgumentException iae) {
191 // expected
192 }
193 }
194 private static void testMetaspaceWrapperBase() {
195 try {
196 Object cp = CompilerToVMHelper.getConstantPool(
197 new PublicMetaspaceWrapperObject() {
198 @Override
199 public long getMetaspacePointer() {
200 return getPtrToCpAddress();
201 }
202 }, 0L);
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 long getPtrToCpAddress() {
211 Field field;
212 try {
213 field = TEST_CLASS.getDeclaredField("CP_ADDRESS");
214 } catch (NoSuchFieldException nsfe) {
215 throw new Error("TESTBUG : cannot find field \"CP_ADDRESS\" : "
216 + nsfe.getMessage(), nsfe);
217 }
218 Object base = UNSAFE.staticFieldBase(field);
219 return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
220 }
221 }