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 }