Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/CompiledICHolder.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | c18cbe5936b8 |
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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 import java.util.*; | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.runtime.*; | |
31 import sun.jvm.hotspot.types.*; | |
32 | |
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33 public class CompiledICHolder extends VMObject { |
0 | 34 static { |
35 VM.registerVMInitializedObserver(new Observer() { | |
36 public void update(Observable o, Object data) { | |
37 initialize(VM.getVM().getTypeDataBase()); | |
38 } | |
39 }); | |
40 } | |
41 | |
42 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
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43 Type type = db.lookupType("CompiledICHolder"); |
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44 holderMethod = new MetadataField(type.getAddressField("_holder_method"), 0); |
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45 holderKlass = new MetadataField(type.getAddressField("_holder_klass"), 0); |
0 | 46 headerSize = type.getSize(); |
47 } | |
48 | |
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49 public CompiledICHolder(Address addr) { |
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50 super(addr); |
0 | 51 } |
52 | |
53 public boolean isCompiledICHolder() { return true; } | |
54 | |
55 private static long headerSize; | |
56 | |
57 // Fields | |
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58 private static MetadataField holderMethod; |
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59 private static MetadataField holderKlass; |
0 | 60 |
61 // Accessors for declared fields | |
62 public Method getHolderMethod() { return (Method) holderMethod.getValue(this); } | |
63 public Klass getHolderKlass() { return (Klass) holderKlass.getValue(this); } | |
64 | |
65 public void printValueOn(PrintStream tty) { | |
66 tty.print("CompiledICHolder"); | |
67 } | |
68 } |