Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Instance.java @ 210:05712c37c828
6676016: ParallelOldGC leaks memory
Summary: ensure that GCTask threads release resource and handle memory
Reviewed-by: jmasa, chrisphi
author | jcoomes |
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date | Wed, 18 Jun 2008 18:36:47 -0700 |
parents | ba764ed4b6f2 |
children | d1605aabd0a1 |
rev | line source |
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0 | 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 } | |
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43 private static long typeSize; |
0 | 44 |
45 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
46 Type type = db.lookupType("instanceOopDesc"); | |
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47 typeSize = type.getSize(); |
0 | 48 } |
49 | |
50 Instance(OopHandle handle, ObjectHeap heap) { | |
51 super(handle, heap); | |
52 } | |
53 | |
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54 // Returns header size in bytes. |
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55 public static long getHeaderSize() { |
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56 if (VM.getVM().isCompressedOopsEnabled()) { |
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57 return typeSize - VM.getVM().getIntSize(); |
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58 } else { |
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59 return typeSize; |
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60 } |
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coleenp
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61 } |
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62 |
0 | 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 } |