Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/oops/MetadataField.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 |
---|---|
date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | |
children | 8e47bac5643a |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/oops/MetadataField.java Sat Sep 01 13:25:18 2012 -0400 @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +package sun.jvm.hotspot.oops; + +import sun.jvm.hotspot.runtime.VMObject; +import sun.jvm.hotspot.debugger.*; + +// The class for an C int field simply provides access to the value. +public class MetadataField extends Field { + + public MetadataField(sun.jvm.hotspot.types.AddressField vmField, long startOffset) { + super(new NamedFieldIdentifier(vmField.getName()), vmField.getOffset() + startOffset, true); + } + + public Metadata getValue(Oop obj) { + return getValue(obj.getHandle()); + } + public Metadata getValue(VMObject obj) { + return getValue(obj.getAddress()); + } + public Metadata getValue(Address addr) { + return Metadata.instantiateWrapperFor(addr.getAddressAt(getOffset())); + } + public void setValue(Oop obj, long value) throws MutationException { + // Fix this: set* missing in Address + } +}