Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/opto/MachSafePointNode.java @ 11997:cd25d3be91c5
8012144: multiple SIGSEGVs fails on staxf
Summary: Forward port of 7u change to add additional fence() on RMO platforms, with a load_acquire on all platforms
Reviewed-by: dholmes, kvn
author | vladidan |
---|---|
date | Tue, 06 Aug 2013 20:01:40 -0400 |
parents | 79f492f184d0 |
children |
line wrap: on
line source
/* * 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 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.opto; import java.util.*; import java.io.PrintStream; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.types.*; public class MachSafePointNode extends MachReturnNode { 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("MachSafePointNode"); jvmsField = type.getAddressField("_jvms"); jvmadjField = new CIntField(type.getCIntegerField("_jvmadj"), 0); } private static AddressField jvmsField; private static CIntField jvmadjField; public MachSafePointNode(Address addr) { super(addr); } public JVMState jvms() { return JVMState.create(jvmsField.getValue(getAddress())); } public void dumpSpec(PrintStream out) { try { JVMState jvms = jvms(); if (jvms != null) out.print(" !"); if (jvms == null) out.print("empty jvms"); while (jvms != null) { Method m = jvms.method().method(); int bci = jvms.bci(); out.print(" " + m.getMethodHolder().getName().asString().replace('/', '.') + "::" + m.getName().asString() + " @ bci:" + bci); jvms = jvms.caller(); } } catch (Exception e) { out.print(e); } } }