1 /*
2 * Copyright 2000-2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.oops;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.types.*;
32
33 // An Instance is an instance of a Java Class
34
35 public class Instance extends Oop {
36 static {
37 VM.registerVMInitializedObserver(new Observer() {
38 public void update(Observable o, Object data) {
39 initialize(VM.getVM().getTypeDataBase());
40 }
41 });
42 }
43
44 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
45 Type type = db.lookupType("instanceOopDesc");
46 }
47
48 Instance(OopHandle handle, ObjectHeap heap) {
49 super(handle, heap);
50 }
51
52 public boolean isInstance() { return true; }
53
54 public void iterateFields(OopVisitor visitor, boolean doVMFields) {
55 super.iterateFields(visitor, doVMFields);
56 ((InstanceKlass) getKlass()).iterateNonStaticFields(visitor);
57 }
58
59 public void printValueOn(PrintStream tty) {
60 // Special-case strings.
61 // FIXME: would like to do this in more type-safe fashion (need
62 // SystemDictionary analogue)
63 if (getKlass().getName().asString().equals("java/lang/String")) {
64 tty.print("\"" + OopUtilities.stringOopToString(this) + "\"");
65 } else {
66 super.printValueOn(tty);
67 }
68 }
69 }
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1 /*
2 * Copyright 2000-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.oops;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.types.*;
32
33 // An Instance is an instance of a Java Class
34
35 public class Instance extends Oop {
36 static {
37 VM.registerVMInitializedObserver(new Observer() {
38 public void update(Observable o, Object data) {
39 initialize(VM.getVM().getTypeDataBase());
40 }
41 });
42 }
43 private static long typeSize;
44
45 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
46 Type type = db.lookupType("instanceOopDesc");
47 typeSize = type.getSize();
48 }
49
50 Instance(OopHandle handle, ObjectHeap heap) {
51 super(handle, heap);
52 }
53
54 // Returns header size in bytes.
55 public static long getHeaderSize() {
56 if (VM.getVM().isCompressedOopsEnabled()) {
57 return typeSize - VM.getVM().getIntSize();
58 } else {
59 return typeSize;
60 }
61 }
62
63 public boolean isInstance() { return true; }
64
65 public void iterateFields(OopVisitor visitor, boolean doVMFields) {
66 super.iterateFields(visitor, doVMFields);
67 ((InstanceKlass) getKlass()).iterateNonStaticFields(visitor);
68 }
69
70 public void printValueOn(PrintStream tty) {
71 // Special-case strings.
72 // FIXME: would like to do this in more type-safe fashion (need
73 // SystemDictionary analogue)
74 if (getKlass().getName().asString().equals("java/lang/String")) {
75 tty.print("\"" + OopUtilities.stringOopToString(this) + "\"");
76 } else {
77 super.printValueOn(tty);
78 }
79 }
80 }
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