Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/oops/ReceiverTypeData.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 | 4bec1b1f7b33 |
children |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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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. |
73 // gc; it does not assert the receiver is a klass. During compaction of the | 73 // gc; it does not assert the receiver is a klass. During compaction of the |
74 // perm gen, the klass may already have moved, so the isKlass() predicate | 74 // perm gen, the klass may already have moved, so the isKlass() predicate |
75 // would fail. The 'normal' version should be used whenever possible. | 75 // would fail. The 'normal' version should be used whenever possible. |
76 Klass receiverUnchecked(int row) { | 76 Klass receiverUnchecked(int row) { |
77 //assert(row < rowLimit(), "oob"); | 77 //assert(row < rowLimit(), "oob"); |
78 Oop recv = oopAt(receiverCellIndex(row)); | 78 Address recv = addressAt(receiverCellIndex(row)); |
79 return (Klass)recv; | 79 return (Klass)Metadata.instantiateWrapperFor(recv); |
80 } | 80 } |
81 | 81 |
82 public Klass receiver(int row) { | 82 public Klass receiver(int row) { |
83 Klass recv = receiverUnchecked(row); | 83 Klass recv = receiverUnchecked(row); |
84 //assert(recv == NULL || ((oop)recv).isKlass(), "wrong type"); | 84 //assert(recv == NULL || ((oop)recv).isKlass(), "wrong type"); |