Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/ci/ciInstanceKlass.java @ 3945:8ed53447f690
Merge
author | iveresov |
---|---|
date | Thu, 15 Sep 2011 12:44:09 -0700 |
parents | f6f3bb0ee072 |
children | da91efe96a93 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/ci/ciInstanceKlass.java Thu Sep 15 12:44:09 2011 -0700 @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2011, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +package sun.jvm.hotspot.ci; + +import java.io.*; +import java.util.*; +import sun.jvm.hotspot.debugger.*; +import sun.jvm.hotspot.memory.SystemDictionary; +import sun.jvm.hotspot.runtime.*; +import sun.jvm.hotspot.oops.*; +import sun.jvm.hotspot.types.Type; +import sun.jvm.hotspot.types.TypeDataBase; +import sun.jvm.hotspot.types.WrongTypeException; + +public class ciInstanceKlass extends ciKlass { + static { + VM.registerVMInitializedObserver(new Observer() { + public void update(Observable o, Object data) { + initialize(VM.getVM().getTypeDataBase()); + } + }); + } + + private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { + Type type = db.lookupType("ciInstanceKlass"); + initStateField = new CIntField(type.getCIntegerField("_init_state"), 0); + isSharedField = new CIntField(type.getCIntegerField("_is_shared"), 0); + CLASS_STATE_LINKED = db.lookupIntConstant("instanceKlass::linked").intValue(); + CLASS_STATE_FULLY_INITIALIZED = db.lookupIntConstant("instanceKlass::fully_initialized").intValue(); + } + + private static CIntField initStateField; + private static CIntField isSharedField; + private static int CLASS_STATE_LINKED; + private static int CLASS_STATE_FULLY_INITIALIZED; + + public ciInstanceKlass(Address addr) { + super(addr); + } + + public int initState() { + int initState = (int)initStateField.getValue(getAddress()); + if (isShared() && initState < CLASS_STATE_LINKED) { + InstanceKlass ik = (InstanceKlass)getOop(); + initState = ik.getInitStateAsInt(); + } + return initState; + } + + public boolean isShared() { + return isSharedField.getValue(getAddress()) != 0; + } + + public boolean isLinked() { + return initState() >= CLASS_STATE_LINKED; + } + + public boolean isInitialized() { + return initState() == CLASS_STATE_FULLY_INITIALIZED; + } +}