1 /* 2 * Copyright (c) 2011, 2017, 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 */ 41 boolean isCallerSensitive(); 42 43 @Override 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 */ 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 */ 58 boolean hasReservedStackAccess(); 59 60 /** 61 * Sets flags on {@code method} indicating that it should never be inlined or compiled by the VM. 62 */ 63 void setNotInlinableOrCompilable(); 64 65 /** 66 * Returns true if this method is one of the special methods that is ignored by security stack 67 * walks. 68 * 69 * @return true if special method ignored by security stack walks, false otherwise 70 */ 71 boolean ignoredBySecurityStackWalk(); 72 73 ResolvedJavaMethod uniqueConcreteMethod(HotSpotResolvedObjectType receiver); 74 75 /** 76 * Returns whether this method has compiled code. 77 * 78 * @return true if this method has compiled code, false otherwise 79 */ 80 boolean hasCompiledCode(); 81 82 /** 83 * @param level 84 * @return true if the currently installed code was generated at {@code level}. 85 */ 86 boolean hasCompiledCodeAtLevel(int level); 87 88 @Override 89 default boolean isDefault() { 90 if (isConstructor()) { 91 return false; 92 } 93 // Copied from java.lang.Method.isDefault() 94 int mask = Modifier.ABSTRACT | Modifier.PUBLIC | Modifier.STATIC; 95 return ((getModifiers() & mask) == Modifier.PUBLIC) && getDeclaringClass().isInterface(); 96 } 97 98 /** 99 * Returns the offset of this method into the v-table. The method must have a v-table entry as 100 * indicated by {@link #isInVirtualMethodTable(ResolvedJavaType)}, otherwise an exception is 101 * thrown. 102 * 103 * @return the offset of this method into the v-table 104 */ 105 int vtableEntryOffset(ResolvedJavaType resolved); 106 107 int intrinsicId(); 108 109 /** 110 * Determines if this method denotes itself as a candidate for intrinsification. As of JDK 9, 111 * this is denoted by the {@code HotSpotIntrinsicCandidate} annotation. In earlier JDK versions, 112 * this method returns true. 113 * 114 * @see <a href="https://bugs.openjdk.java.net/browse/JDK-8076112">JDK-8076112</a> 115 */ 116 boolean isIntrinsicCandidate(); 117 118 /** 119 * Allocates a compile id for this method by asking the VM for one. 120 * 121 * @param entryBCI entry bci 122 * @return compile id 123 */ 124 int allocateCompileId(int entryBCI); 125 126 boolean hasCodeAtLevel(int entryBCI, int level); 127 128 int methodIdnum(); 129 }