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comparison agent/src/share/classes/sun/jvm/hotspot/oops/ReceiverTypeData.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.
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");