001/*
002 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.nodes.debug;
024
025import com.oracle.graal.compiler.common.type.*;
026import com.oracle.graal.graph.*;
027import com.oracle.graal.nodeinfo.*;
028import com.oracle.graal.nodes.*;
029import com.oracle.graal.nodes.spi.*;
030
031/**
032 * A node for platform dependent verification of the Java heap. Intended to be used for debugging
033 * heap corruption issues.
034 */
035@NodeInfo
036public final class VerifyHeapNode extends FixedWithNextNode implements Lowerable {
037
038    public static final NodeClass<VerifyHeapNode> TYPE = NodeClass.create(VerifyHeapNode.class);
039
040    public VerifyHeapNode() {
041        super(TYPE, StampFactory.forVoid());
042    }
043
044    @Override
045    public void lower(LoweringTool tool) {
046        tool.getLowerer().lower(this, tool);
047    }
048
049    public static void addBefore(FixedNode position) {
050        StructuredGraph graph = position.graph();
051        graph.addBeforeFixed(position, graph.add(new VerifyHeapNode()));
052    }
053
054    public static void addAfter(FixedWithNextNode position) {
055        StructuredGraph graph = position.graph();
056        graph.addAfterFixed(position, graph.add(new VerifyHeapNode()));
057    }
058
059}