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comparison agent/src/share/classes/sun/jvm/hotspot/oops/CompiledICHolder.java @ 6725:da91efe96a93

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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
date Sat, 01 Sep 2012 13:25:18 -0400
parents c18cbe5936b8
children
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
28 import java.util.*; 28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*; 29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*; 30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.types.*; 31 import sun.jvm.hotspot.types.*;
32 32
33 public class CompiledICHolder extends Oop { 33 public class CompiledICHolder extends VMObject {
34 static { 34 static {
35 VM.registerVMInitializedObserver(new Observer() { 35 VM.registerVMInitializedObserver(new Observer() {
36 public void update(Observable o, Object data) { 36 public void update(Observable o, Object data) {
37 initialize(VM.getVM().getTypeDataBase()); 37 initialize(VM.getVM().getTypeDataBase());
38 } 38 }
39 }); 39 });
40 } 40 }
41 41
42 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 42 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
43 Type type = db.lookupType("compiledICHolderOopDesc"); 43 Type type = db.lookupType("CompiledICHolder");
44 holderMethod = new OopField(type.getOopField("_holder_method"), 0); 44 holderMethod = new MetadataField(type.getAddressField("_holder_method"), 0);
45 holderKlass = new OopField(type.getOopField("_holder_klass"), 0); 45 holderKlass = new MetadataField(type.getAddressField("_holder_klass"), 0);
46 headerSize = type.getSize(); 46 headerSize = type.getSize();
47 } 47 }
48 48
49 CompiledICHolder(OopHandle handle, ObjectHeap heap) { 49 public CompiledICHolder(Address addr) {
50 super(handle, heap); 50 super(addr);
51 } 51 }
52 52
53 public boolean isCompiledICHolder() { return true; } 53 public boolean isCompiledICHolder() { return true; }
54 54
55 private static long headerSize; 55 private static long headerSize;
56 56
57 // Fields 57 // Fields
58 private static OopField holderMethod; 58 private static MetadataField holderMethod;
59 private static OopField holderKlass; 59 private static MetadataField holderKlass;
60 60
61 // Accessors for declared fields 61 // Accessors for declared fields
62 public Method getHolderMethod() { return (Method) holderMethod.getValue(this); } 62 public Method getHolderMethod() { return (Method) holderMethod.getValue(this); }
63 public Klass getHolderKlass() { return (Klass) holderKlass.getValue(this); } 63 public Klass getHolderKlass() { return (Klass) holderKlass.getValue(this); }
64 64
65 public void printValueOn(PrintStream tty) { 65 public void printValueOn(PrintStream tty) {
66 tty.print("CompiledICHolder"); 66 tty.print("CompiledICHolder");
67 } 67 }
68
69 public long getObjectSize() {
70 return alignObjectSize(headerSize);
71 } 68 }
72
73 void iterateFields(OopVisitor visitor, boolean doVMFields) {
74 super.iterateFields(visitor, doVMFields);
75 if (doVMFields) {
76 visitor.doOop(holderMethod, true);
77 visitor.doOop(holderKlass, true);
78 }
79 }
80 }