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.simpleArch == "aarch64") 28 * @library / /testlibrary /test/lib 29 * @library ../common/patches 30 * @modules jdk.vm.ci/jdk.vm.ci.hotspot 31 * jdk.vm.ci/jdk.vm.ci.meta 32 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper 33 * jdk.vm.ci/jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject 34 * @build compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest 35 * @build sun.hotspot.WhiteBox 36 * @run main ClassFileInstaller 37 * sun.hotspot.WhiteBox 38 * sun.hotspot.WhiteBox$WhiteBoxPermission 39 * @run main/othervm -Xbootclasspath/a:. 40 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 41 * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 42 * -XX:+UseCompressedOops 43 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest 44 * @run main/othervm -Xbootclasspath/a:. 45 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 46 * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 47 * -XX:-UseCompressedOops 48 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest 49 */ 50 51 package compiler.jvmci.compilerToVM; 52 53 import java.lang.reflect.Field; 54 import jdk.vm.ci.meta.ConstantPool; 55 import jdk.vm.ci.hotspot.CompilerToVMHelper; 56 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 57 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; 58 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject; 59 import jdk.test.lib.Asserts; 60 import jdk.test.lib.Utils; 61 import sun.hotspot.WhiteBox; 62 import sun.misc.Unsafe; 63 64 public class GetResolvedJavaTypeTest { 65 private static enum TestCase { 66 NULL_BASE { 67 @Override 68 HotSpotResolvedObjectType getResolvedJavaType() { 69 return CompilerToVMHelper.getResolvedJavaType( 70 null, getPtrToKlass(), COMPRESSED); 71 } 72 }, 73 JAVA_METHOD_BASE { 74 @Override 75 HotSpotResolvedObjectType getResolvedJavaType() { 76 HotSpotResolvedJavaMethod methodInstance 77 = CompilerToVMHelper.getResolvedJavaMethodAtSlot( 78 TEST_CLASS, 0); 79 Field field; 80 try { 81 // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod 82 field = methodInstance.getClass() 83 .getDeclaredField("metaspaceMethod"); 84 field.setAccessible(true); 85 field.set(methodInstance, getPtrToKlass()); 86 } catch (ReflectiveOperationException e) { 87 throw new Error("TEST BUG : " + e, e); 88 } 89 90 return CompilerToVMHelper.getResolvedJavaType(methodInstance, 91 0L, COMPRESSED); 92 } 93 }, 94 CONSTANT_POOL_BASE { 95 @Override 96 HotSpotResolvedObjectType getResolvedJavaType() { 97 ConstantPool cpInst; 98 try { 99 cpInst = CompilerToVMHelper.getConstantPool(null, 100 getPtrToKlass()); 101 // jdk.vm.ci.hotspot.HotSpotConstantPool.metaspaceConstantPool 102 Field field = cpInst.getClass() 103 .getDeclaredField("metaspaceConstantPool"); 104 field.setAccessible(true); 105 field.set(cpInst, getPtrToKlass()); 106 } catch (ReflectiveOperationException e) { 107 throw new Error("TESTBUG : " + e, e); 108 } 109 return CompilerToVMHelper.getResolvedJavaType(cpInst, 110 0L, COMPRESSED); 111 } 112 }, 113 CONSTANT_POOL_BASE_IN_TWO { 114 @Override 115 HotSpotResolvedObjectType getResolvedJavaType() { 116 long ptr = getPtrToKlass(); 117 ConstantPool cpInst = HotSpotResolvedObjectType 118 .fromObjectClass(TEST_CLASS) 119 .getConstantPool(); 120 try { 121 Field field = cpInst.getClass() 122 .getDeclaredField("metaspaceConstantPool"); 123 field.setAccessible(true); 124 field.set(cpInst, ptr / 2L); 125 } catch (ReflectiveOperationException e) { 126 throw new Error("TESTBUG : " + e, e); 127 } 128 return CompilerToVMHelper.getResolvedJavaType(cpInst, 129 ptr - ptr / 2L, COMPRESSED); 130 } 131 }, 132 CONSTANT_POOL_BASE_ZERO { 133 @Override 134 HotSpotResolvedObjectType getResolvedJavaType() { 135 long ptr = getPtrToKlass(); 136 ConstantPool cpInst = HotSpotResolvedObjectType 137 .fromObjectClass(TEST_CLASS) 138 .getConstantPool(); 139 try { 140 Field field = cpInst.getClass() 141 .getDeclaredField("metaspaceConstantPool"); 142 field.setAccessible(true); 143 field.set(cpInst, 0L); 144 } catch (ReflectiveOperationException e) { 145 throw new Error("TESTBUG : " + e, e); 146 } 147 return CompilerToVMHelper.getResolvedJavaType(cpInst, 148 ptr, COMPRESSED); 149 } 150 }, 151 OBJECT_TYPE_BASE { 152 @Override 153 HotSpotResolvedObjectType getResolvedJavaType() { 154 HotSpotResolvedObjectType type 155 = HotSpotResolvedObjectType.fromObjectClass( 156 OBJECT_TYPE_BASE.getClass()); 157 long ptrToClass = UNSAFE.getKlassPointer(OBJECT_TYPE_BASE); 158 return CompilerToVMHelper.getResolvedJavaType(type, 159 getPtrToKlass() - ptrToClass, COMPRESSED); 160 } 161 }, 162 ; 163 abstract HotSpotResolvedObjectType getResolvedJavaType(); 164 } 165 166 private static final Unsafe UNSAFE = Utils.getUnsafe(); 167 private static final WhiteBox WB = WhiteBox.getWhiteBox(); 168 private static final long PTR = UNSAFE.getKlassPointer( 169 new GetResolvedJavaTypeTest()); 170 private static final Class TEST_CLASS = GetResolvedJavaTypeTest.class; 171 /* a compressed parameter for tested method is set to false because 172 unsafe.getKlassPointer always returns uncompressed pointer */ 173 private static final boolean COMPRESSED = false; 174 // = WB.getBooleanVMFlag("UseCompressedClassPointers"); 175 176 private static long getPtrToKlass() { 177 Field field; 178 try { 179 field = TEST_CLASS.getDeclaredField("PTR"); 180 } catch (NoSuchFieldException e) { 181 throw new Error("TEST BUG : " + e, e); 182 } 183 Object base = UNSAFE.staticFieldBase(field); 184 return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field); 185 } 186 187 public void test(TestCase testCase) { 188 System.out.println(testCase.name()); 189 HotSpotResolvedObjectType type = testCase.getResolvedJavaType(); 190 Asserts.assertEQ(TEST_CLASS, 191 CompilerToVMHelper.getMirror(type), 192 testCase + " : unexpected class returned"); 193 } 194 195 public static void main(String[] args) { 196 GetResolvedJavaTypeTest test = new GetResolvedJavaTypeTest(); 197 for (TestCase testCase : TestCase.values()) { 198 test.test(testCase); 199 } 200 testObjectBase(); 201 testMetaspaceWrapperBase(); 202 } 203 204 private static void testMetaspaceWrapperBase() { 205 try { 206 HotSpotResolvedObjectType type 207 = CompilerToVMHelper.getResolvedJavaType( 208 new PublicMetaspaceWrapperObject() { 209 @Override 210 public long getMetaspacePointer() { 211 return getPtrToKlass(); 212 } 213 }, 0L, COMPRESSED); 214 throw new AssertionError("Test METASPACE_WRAPPER_BASE." 215 + " Expected IllegalArgumentException has not been caught"); 216 } catch (IllegalArgumentException iae) { 217 // expected 218 } 219 } 220 221 private static void testObjectBase() { 222 try { 223 HotSpotResolvedObjectType type 224 = CompilerToVMHelper.getResolvedJavaType(new Object(), 0L, 225 COMPRESSED); 226 throw new AssertionError("Test OBJECT_BASE." 227 + " Expected IllegalArgumentException has not been caught"); 228 } catch (IllegalArgumentException iae) { 229 // expected 230 } 231 } 232 }