Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/utilities/soql/JSJavaInstance.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 | c18cbe5936b8 |
children |
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/* * Copyright (c) 2003, 2007, 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.utilities.soql; import sun.jvm.hotspot.oops.*; /** This is JavaScript wrapper for Java Instance in debuggee.*/ public class JSJavaInstance extends JSJavaObject { public JSJavaInstance(Instance instance, JSJavaFactory fac) { super(instance, fac); this.type = (JSJavaInstanceKlass) fac.newJSJavaKlass(instance.getKlass()); } public final Instance getInstance() { return (Instance) getOop(); } public final JSJavaClass getJSJavaClass() { return type.getJSJavaClass(); } public Object get(String name) { if (hasField(name)) { return getFieldValue(name); } else { return super.get(name); } } public Object[] getIds() { String[] fieldNames = getFieldNames(); Object[] superFields = super.getIds(); Object[] res = new Object[fieldNames.length + superFields.length]; System.arraycopy(fieldNames, 0, res, 0, fieldNames.length); System.arraycopy(superFields, 0, res, fieldNames.length, superFields.length); return res; } public boolean has(String name) { if (hasField(name)) { return true; } else { return super.has(name); } } public void put(String name, Object value) { if (! hasField(name)) { super.put(name, value); } } protected Object getFieldValue(String name) { try { return type.getInstanceFieldValue(name, getInstance()); } catch (NoSuchFieldException exp) { return UNDEFINED; } } protected String[] getFieldNames() { return type.getInstanceFieldNames(); } protected boolean hasField(String name) { return type.hasInstanceField(name); } protected final JSJavaInstanceKlass type; }