1 /*
   2  * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.hotspot.gc.shared;
  26 
  27 import org.graalvm.compiler.graph.NodeClass;
  28 import org.graalvm.compiler.hotspot.nodes.WriteBarrier;
  29 import org.graalvm.compiler.nodeinfo.InputType;
  30 import org.graalvm.compiler.nodeinfo.NodeInfo;
  31 import org.graalvm.compiler.nodes.ValueNode;
  32 import org.graalvm.compiler.nodes.memory.address.AddressNode;
  33 
  34 @NodeInfo
  35 public abstract class ObjectWriteBarrier extends WriteBarrier {
  36 
  37     public static final NodeClass<ObjectWriteBarrier> TYPE = NodeClass.create(ObjectWriteBarrier.class);
  38     @Input(InputType.Association) protected AddressNode address;
  39     @OptionalInput protected ValueNode value;
  40     protected final boolean precise;
  41 
  42     protected ObjectWriteBarrier(NodeClass<? extends ObjectWriteBarrier> c, AddressNode address, ValueNode value, boolean precise) {
  43         super(c);
  44         this.address = address;
  45         this.value = value;
  46         this.precise = precise;
  47     }
  48 
  49     public ValueNode getValue() {
  50         return value;
  51     }
  52 
  53     public AddressNode getAddress() {
  54         return address;
  55     }
  56 
  57     public boolean usePrecise() {
  58         return precise;
  59     }
  60 }