1 /* 2 * Copyright (c) 2011, 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 package jdk.vm.ci.hotspot; 24 25 import jdk.vm.ci.meta.Assumptions.AssumptionResult; 26 import jdk.vm.ci.meta.Constant; 27 import jdk.vm.ci.meta.ConstantPool; 28 import jdk.vm.ci.meta.JavaConstant; 29 import jdk.vm.ci.meta.JavaKind; 30 import jdk.vm.ci.meta.JavaType; 31 import jdk.vm.ci.meta.ResolvedJavaMethod; 32 import jdk.vm.ci.meta.ResolvedJavaType; 33 34 /** 35 * Implementation of {@link JavaType} for resolved non-primitive HotSpot classes. 36 */ 37 public interface HotSpotResolvedObjectType extends ResolvedJavaType { 38 39 /** 40 * Gets the JVMCI mirror for a {@link Class} object. 41 * 42 * @return the {@link HotSpotResolvedJavaType} corresponding to {@code javaClass} 43 */ 44 static HotSpotResolvedObjectType fromObjectClass(Class<?> javaClass) { 45 return HotSpotResolvedObjectTypeImpl.fromObjectClass(javaClass); 46 } 47 48 HotSpotResolvedObjectType getArrayClass(); 49 50 ResolvedJavaType getComponentType(); 51 52 AssumptionResult<ResolvedJavaType> findLeafConcreteSubtype(); 53 54 HotSpotResolvedObjectType getSuperclass(); 55 56 HotSpotResolvedObjectType[] getInterfaces(); 57 58 HotSpotResolvedObjectType getSupertype(); 59 60 HotSpotResolvedObjectType findLeastCommonAncestor(ResolvedJavaType otherType); 61 62 default boolean isPrimitive() { 63 return false; 64 } 65 66 default JavaKind getJavaKind() { 67 return JavaKind.Object; 68 } 69 70 ConstantPool getConstantPool(); 71 72 /** 73 * Gets the instance size of this type. If an instance of this type cannot be fast path 74 * allocated, then the returned value is negative (its absolute value gives the size). Must not 75 * be called if this is an array or interface type. 76 */ 77 int instanceSize(); 78 79 int getVtableLength(); 80 81 @Override 82 AssumptionResult<ResolvedJavaMethod> findUniqueConcreteMethod(ResolvedJavaMethod method); 83 84 /** 85 * Performs a fast-path check that this type is resolved in the context of a given accessing 86 * class. A negative result does not mean this type is not resolved with respect to 87 * {@code accessingClass}. That can only be determined by 88 * {@linkplain HotSpotJVMCIRuntime#lookupType(String, HotSpotResolvedObjectType, boolean) 89 * re-resolving} the type. 90 */ 91 boolean isDefinitelyResolvedWithRespectTo(ResolvedJavaType accessingClass); 92 93 /** 94 * Gets the metaspace Klass boxed in a {@link JavaConstant}. 95 */ 96 Constant klass(); 97 98 boolean isPrimaryType(); 99 100 int superCheckOffset(); 101 102 long prototypeMarkWord(); 103 104 int layoutHelper(); 105 106 HotSpotResolvedObjectType getEnclosingType(); 107 108 ResolvedJavaMethod getClassInitializer(); 109 }