1 /* 2 * Copyright (c) 2011, 2020, 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 java.lang.reflect.Modifier; 26 27 import jdk.vm.ci.meta.JavaMethod; 28 import jdk.vm.ci.meta.ResolvedJavaMethod; 29 import jdk.vm.ci.meta.ResolvedJavaType; 30 31 /** 32 * Implementation of {@link JavaMethod} for resolved HotSpot methods. 33 */ 34 public interface HotSpotResolvedJavaMethod extends ResolvedJavaMethod { 35 36 /** 37 * Returns true if this method has a {@code CallerSensitive} annotation. 38 * 39 * @return true if CallerSensitive annotation present, false otherwise 40 */ isCallerSensitive()41 boolean isCallerSensitive(); 42 43 @Override getDeclaringClass()44 HotSpotResolvedObjectType getDeclaringClass(); 45 46 /** 47 * Returns true if this method has a {@code ForceInline} annotation. 48 * 49 * @return true if ForceInline annotation present, false otherwise 50 */ isForceInline()51 boolean isForceInline(); 52 53 /** 54 * Returns true if this method has a {@code ReservedStackAccess} annotation. 55 * 56 * @return true if ReservedStackAccess annotation present, false otherwise 57 */ hasReservedStackAccess()58 boolean hasReservedStackAccess(); 59 60 /** 61 * Sets flags on {@code method} indicating that it should never be inlined or compiled by the 62 * VM. 63 */ setNotInlinableOrCompilable()64 void setNotInlinableOrCompilable(); 65 66 /** 67 * Returns true if this method is one of the special methods that is ignored by security stack 68 * walks. 69 * 70 * @return true if special method ignored by security stack walks, false otherwise 71 */ ignoredBySecurityStackWalk()72 boolean ignoredBySecurityStackWalk(); 73 uniqueConcreteMethod(HotSpotResolvedObjectType receiver)74 ResolvedJavaMethod uniqueConcreteMethod(HotSpotResolvedObjectType receiver); 75 76 /** 77 * Returns whether this method has compiled code. 78 * 79 * @return true if this method has compiled code, false otherwise 80 */ hasCompiledCode()81 boolean hasCompiledCode(); 82 83 /** 84 * @param level 85 * @return true if the currently installed code was generated at {@code level}. 86 */ hasCompiledCodeAtLevel(int level)87 boolean hasCompiledCodeAtLevel(int level); 88 89 @Override isDefault()90 default boolean isDefault() { 91 if (isConstructor()) { 92 return false; 93 } 94 // Copied from java.lang.Method.isDefault() 95 int mask = Modifier.ABSTRACT | Modifier.PUBLIC | Modifier.STATIC; 96 return ((getModifiers() & mask) == Modifier.PUBLIC) && getDeclaringClass().isInterface(); 97 } 98 99 /** 100 * Returns the offset of this method into the v-table. The method must have a v-table entry as 101 * indicated by {@link #isInVirtualMethodTable(ResolvedJavaType)}, otherwise an exception is 102 * thrown. 103 * 104 * @return the offset of this method into the v-table 105 */ vtableEntryOffset(ResolvedJavaType resolved)106 int vtableEntryOffset(ResolvedJavaType resolved); 107 intrinsicId()108 int intrinsicId(); 109 110 /** 111 * Determines if this method denotes itself as a candidate for intrinsification. As of JDK 9, 112 * this is denoted by the {@code IntrinsicCandidate} annotation. In earlier JDK versions, this 113 * method returns true. 114 * 115 * @see <a href="https://bugs.openjdk.java.net/browse/JDK-8076112">JDK-8076112</a> 116 */ isIntrinsicCandidate()117 boolean isIntrinsicCandidate(); 118 119 /** 120 * Allocates a compile id for this method by asking the VM for one. 121 * 122 * @param entryBCI entry bci 123 * @return compile id 124 */ allocateCompileId(int entryBCI)125 int allocateCompileId(int entryBCI); 126 hasCodeAtLevel(int entryBCI, int level)127 boolean hasCodeAtLevel(int entryBCI, int level); 128 methodIdnum()129 int methodIdnum(); 130 } 131