Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Field.java @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
author | ehelin |
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date | Mon, 12 Aug 2013 17:37:02 +0200 |
parents | bd7a7ce2e264 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2012, 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.*; | |
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30 import sun.jvm.hotspot.utilities.*; |
0 | 31 |
32 // Super class for all fields in an object | |
33 public class Field { | |
34 | |
35 Field(FieldIdentifier id, long offset, boolean isVMField) { | |
36 this.offset = offset; | |
37 this.id = id; | |
38 this.isVMField = isVMField; | |
39 } | |
40 | |
41 /** Constructor for fields that are named in an InstanceKlass's | |
42 fields array (i.e., named, non-VM fields) */ | |
3938 | 43 Field(InstanceKlass holder, int fieldIndex) { |
0 | 44 this.holder = holder; |
3938 | 45 this.fieldIndex = fieldIndex; |
46 | |
47 offset = holder.getFieldOffset(fieldIndex); | |
48 genericSignature = holder.getFieldGenericSignature(fieldIndex); | |
0 | 49 |
3938 | 50 Symbol name = holder.getFieldName(fieldIndex); |
0 | 51 id = new NamedFieldIdentifier(name.asString()); |
52 | |
3938 | 53 signature = holder.getFieldSignature(fieldIndex); |
0 | 54 fieldType = new FieldType(signature); |
3938 | 55 |
56 short access = holder.getFieldAccessFlags(fieldIndex); | |
0 | 57 accessFlags = new AccessFlags(access); |
58 } | |
59 | |
60 private long offset; | |
61 private FieldIdentifier id; | |
62 private boolean isVMField; | |
63 // Java fields only | |
64 private InstanceKlass holder; | |
65 private FieldType fieldType; | |
66 private Symbol signature; | |
67 private Symbol genericSignature; | |
68 private AccessFlags accessFlags; | |
3938 | 69 private int fieldIndex; |
0 | 70 |
71 /** Returns the byte offset of the field within the object or klass */ | |
72 public long getOffset() { return offset; } | |
73 | |
74 /** Returns the identifier of the field */ | |
75 public FieldIdentifier getID() { return id; } | |
76 | |
77 /** Indicates whether this is a VM field */ | |
78 public boolean isVMField() { return isVMField; } | |
79 | |
80 /** Indicates whether this is a named field */ | |
81 public boolean isNamedField() { return (id instanceof NamedFieldIdentifier); } | |
82 | |
83 public void printOn(PrintStream tty) { | |
84 getID().printOn(tty); | |
85 tty.print(" {" + getOffset() + "} :"); | |
86 } | |
87 | |
88 /** (Named, non-VM fields only) Returns the InstanceKlass containing | |
89 this (static or non-static) field. */ | |
90 public InstanceKlass getFieldHolder() { | |
91 return holder; | |
92 } | |
93 | |
94 /** (Named, non-VM fields only) Returns the index in the fields | |
95 TypeArray for this field. Equivalent to the "index" in the VM's | |
96 fieldDescriptors. */ | |
3938 | 97 public int getFieldIndex() { |
98 return fieldIndex; | |
0 | 99 } |
100 | |
101 /** (Named, non-VM fields only) Retrieves the access flags. */ | |
102 public long getAccessFlags() { return accessFlags.getValue(); } | |
103 public AccessFlags getAccessFlagsObj() { return accessFlags; } | |
104 | |
105 /** (Named, non-VM fields only) Returns the type of this field. */ | |
106 public FieldType getFieldType() { return fieldType; } | |
107 | |
108 /** (Named, non-VM fields only) Returns the signature of this | |
109 field. */ | |
110 public Symbol getSignature() { return signature; } | |
111 public Symbol getGenericSignature() { return genericSignature; } | |
112 | |
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113 public boolean hasInitialValue() { return holder.getFieldInitialValueIndex(fieldIndex) != 0; } |
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114 |
0 | 115 // |
116 // Following acccessors are for named, non-VM fields only | |
117 // | |
118 public boolean isPublic() { return accessFlags.isPublic(); } | |
119 public boolean isPrivate() { return accessFlags.isPrivate(); } | |
120 public boolean isProtected() { return accessFlags.isProtected(); } | |
121 public boolean isPackagePrivate() { return !isPublic() && !isPrivate() && !isProtected(); } | |
122 | |
123 public boolean isStatic() { return accessFlags.isStatic(); } | |
124 public boolean isFinal() { return accessFlags.isFinal(); } | |
125 public boolean isVolatile() { return accessFlags.isVolatile(); } | |
126 public boolean isTransient() { return accessFlags.isTransient(); } | |
127 | |
128 public boolean isSynthetic() { return accessFlags.isSynthetic(); } | |
129 public boolean isEnumConstant() { return accessFlags.isEnum(); } | |
130 | |
131 public boolean equals(Object obj) { | |
132 if (obj == null) { | |
133 return false; | |
134 } | |
135 | |
136 if (! (obj instanceof Field)) { | |
137 return false; | |
138 } | |
139 | |
140 Field other = (Field) obj; | |
141 return this.getFieldHolder().equals(other.getFieldHolder()) && | |
142 this.getID().equals(other.getID()); | |
143 } | |
144 | |
145 public int hashCode() { | |
146 return getFieldHolder().hashCode() ^ getID().hashCode(); | |
147 } | |
148 } |