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comparison src/share/vm/oops/typeArrayOop.hpp @ 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 f08d439fab8c
children d8ce2825b193
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 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.
149 void double_at_put(int which, jdouble contents) { *double_at_addr(which) = contents; } 149 void double_at_put(int which, jdouble contents) { *double_at_addr(which) = contents; }
150 150
151 jbyte byte_at_acquire(int which) const { return OrderAccess::load_acquire(byte_at_addr(which)); } 151 jbyte byte_at_acquire(int which) const { return OrderAccess::load_acquire(byte_at_addr(which)); }
152 void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); } 152 void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); }
153 153
154 // Java thinks metadata arrays are just arrays of either long or int, since
155 // there doesn't seem to be T_ADDRESS, so this is a bit of unfortunate
156 // casting
157 #ifdef _LP64
158 Metadata* metadata_at(int which) const {
159 return (Metadata*)*long_at_addr(which); }
160 void metadata_at_put(int which, Metadata* contents) {
161 *long_at_addr(which) = (long)contents;
162 }
163 #else
164 Metadata* metadata_at(int which) const {
165 return (Metadata*)*int_at_addr(which); }
166 void metadata_at_put(int which, Metadata* contents) {
167 *int_at_addr(which) = (int)contents;
168 }
169 #endif // _LP64
170
154 // Sizing 171 // Sizing
155 172
156 // Returns the number of words necessary to hold an array of "len" 173 // Returns the number of words necessary to hold an array of "len"
157 // elements each of the given "byte_size". 174 // elements each of the given "byte_size".
158 private: 175 private: