Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Field.java @ 3939:f6f3bb0ee072
7088955: add C2 IR support to the SA
Reviewed-by: kvn
| author | never |
|---|---|
| date | Sun, 11 Sep 2011 14:48:24 -0700 |
| parents | e6b1331a51d2 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 3939 | 2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 | |
| 29 import sun.jvm.hotspot.runtime.*; | |
| 30 | |
| 31 // Super class for all fields in an object | |
| 32 public class Field { | |
| 33 | |
| 34 Field(FieldIdentifier id, long offset, boolean isVMField) { | |
| 35 this.offset = offset; | |
| 36 this.id = id; | |
| 37 this.isVMField = isVMField; | |
| 38 } | |
| 39 | |
| 40 /** Constructor for fields that are named in an InstanceKlass's | |
| 41 fields array (i.e., named, non-VM fields) */ | |
| 3938 | 42 Field(InstanceKlass holder, int fieldIndex) { |
| 0 | 43 this.holder = holder; |
| 3938 | 44 this.fieldIndex = fieldIndex; |
| 45 | |
| 46 offset = holder.getFieldOffset(fieldIndex); | |
| 47 genericSignature = holder.getFieldGenericSignature(fieldIndex); | |
| 0 | 48 |
| 3938 | 49 Symbol name = holder.getFieldName(fieldIndex); |
| 0 | 50 id = new NamedFieldIdentifier(name.asString()); |
| 51 | |
| 3938 | 52 signature = holder.getFieldSignature(fieldIndex); |
| 0 | 53 fieldType = new FieldType(signature); |
| 3938 | 54 |
| 55 short access = holder.getFieldAccessFlags(fieldIndex); | |
| 0 | 56 accessFlags = new AccessFlags(access); |
| 57 } | |
| 58 | |
| 59 private long offset; | |
| 60 private FieldIdentifier id; | |
| 61 private boolean isVMField; | |
| 62 // Java fields only | |
| 63 private InstanceKlass holder; | |
| 64 private FieldType fieldType; | |
| 65 private Symbol signature; | |
| 66 private Symbol genericSignature; | |
| 67 private AccessFlags accessFlags; | |
| 3938 | 68 private int fieldIndex; |
| 0 | 69 |
| 70 /** Returns the byte offset of the field within the object or klass */ | |
| 71 public long getOffset() { return offset; } | |
| 72 | |
| 73 /** Returns the identifier of the field */ | |
| 74 public FieldIdentifier getID() { return id; } | |
| 75 | |
| 76 /** Indicates whether this is a VM field */ | |
| 77 public boolean isVMField() { return isVMField; } | |
| 78 | |
| 79 /** Indicates whether this is a named field */ | |
| 80 public boolean isNamedField() { return (id instanceof NamedFieldIdentifier); } | |
| 81 | |
| 82 public void printOn(PrintStream tty) { | |
| 83 getID().printOn(tty); | |
| 84 tty.print(" {" + getOffset() + "} :"); | |
| 85 } | |
| 86 | |
| 87 /** (Named, non-VM fields only) Returns the InstanceKlass containing | |
| 88 this (static or non-static) field. */ | |
| 89 public InstanceKlass getFieldHolder() { | |
| 90 return holder; | |
| 91 } | |
| 92 | |
| 93 /** (Named, non-VM fields only) Returns the index in the fields | |
| 94 TypeArray for this field. Equivalent to the "index" in the VM's | |
| 95 fieldDescriptors. */ | |
| 3938 | 96 public int getFieldIndex() { |
| 97 return fieldIndex; | |
| 0 | 98 } |
| 99 | |
| 100 /** (Named, non-VM fields only) Retrieves the access flags. */ | |
| 101 public long getAccessFlags() { return accessFlags.getValue(); } | |
| 102 public AccessFlags getAccessFlagsObj() { return accessFlags; } | |
| 103 | |
| 104 /** (Named, non-VM fields only) Returns the type of this field. */ | |
| 105 public FieldType getFieldType() { return fieldType; } | |
| 106 | |
| 107 /** (Named, non-VM fields only) Returns the signature of this | |
| 108 field. */ | |
| 109 public Symbol getSignature() { return signature; } | |
| 110 public Symbol getGenericSignature() { return genericSignature; } | |
| 111 | |
| 112 // | |
| 113 // Following acccessors are for named, non-VM fields only | |
| 114 // | |
| 115 public boolean isPublic() { return accessFlags.isPublic(); } | |
| 116 public boolean isPrivate() { return accessFlags.isPrivate(); } | |
| 117 public boolean isProtected() { return accessFlags.isProtected(); } | |
| 118 public boolean isPackagePrivate() { return !isPublic() && !isPrivate() && !isProtected(); } | |
| 119 | |
| 120 public boolean isStatic() { return accessFlags.isStatic(); } | |
| 121 public boolean isFinal() { return accessFlags.isFinal(); } | |
| 122 public boolean isVolatile() { return accessFlags.isVolatile(); } | |
| 123 public boolean isTransient() { return accessFlags.isTransient(); } | |
| 124 | |
| 125 public boolean isSynthetic() { return accessFlags.isSynthetic(); } | |
| 126 public boolean isEnumConstant() { return accessFlags.isEnum(); } | |
| 127 | |
| 128 public boolean equals(Object obj) { | |
| 129 if (obj == null) { | |
| 130 return false; | |
| 131 } | |
| 132 | |
| 133 if (! (obj instanceof Field)) { | |
| 134 return false; | |
| 135 } | |
| 136 | |
| 137 Field other = (Field) obj; | |
| 138 return this.getFieldHolder().equals(other.getFieldHolder()) && | |
| 139 this.getID().equals(other.getID()); | |
| 140 } | |
| 141 | |
| 142 public int hashCode() { | |
| 143 return getFieldHolder().hashCode() ^ getID().hashCode(); | |
| 144 } | |
| 145 } |