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comparison agent/src/share/classes/sun/jvm/hotspot/oops/DataLayout.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 4bec1b1f7b33
children
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2011, 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.
62 private int offset; 62 private int offset;
63 63
64 private boolean handlized; 64 private boolean handlized;
65 65
66 public DataLayout(MethodData d, int o) { 66 public DataLayout(MethodData d, int o) {
67 data = d.getHandle(); 67 data = d.getAddress();
68 offset = o; 68 offset = o;
69 } 69 }
70 70
71 public DataLayout(Address d, int o) { 71 public DataLayout(Address d, int o) {
72 data = d; 72 data = d;
85 } 85 }
86 86
87 int cellAt(int index) { 87 int cellAt(int index) {
88 // Cells are intptr_t sized but only contain ints as raw values 88 // Cells are intptr_t sized but only contain ints as raw values
89 return (int)data.getCIntegerAt(offset + cellOffset(index), MethodData.cellSize, false); 89 return (int)data.getCIntegerAt(offset + cellOffset(index), MethodData.cellSize, false);
90 }
91
92 Oop oopAt(int index) {
93 OopHandle handle;
94 if (handlized) {
95 throw new InternalError("unsupported");
96 }
97 handle = data.getOopHandleAt(offset + cellOffset(index));
98 return VM.getVM().getObjectHeap().newOop(handle);
99 } 90 }
100 91
101 public Address addressAt(int index) { 92 public Address addressAt(int index) {
102 OopHandle handle; 93 OopHandle handle;
103 if (handlized) { 94 if (handlized) {