1 /* 2 * Copyright (c) 2014, 2016, 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 package org.graalvm.compiler.nodes.java; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_10; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_4; 27 28 import org.graalvm.compiler.core.common.LocationIdentity; 29 import org.graalvm.compiler.core.common.type.StampFactory; 30 import org.graalvm.compiler.graph.NodeClass; 31 import org.graalvm.compiler.nodeinfo.NodeInfo; 32 import org.graalvm.compiler.nodes.ValueNode; 33 import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint; 34 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 35 import org.graalvm.compiler.nodes.spi.Lowerable; 36 import org.graalvm.compiler.nodes.spi.LoweringTool; 37 38 import jdk.vm.ci.meta.JavaKind; 39 import sun.misc.Unsafe; 40 41 /** 42 * Represents an atomic read-and-write operation like {@link Unsafe#getAndSetInt(Object, long, int)} 43 * . 44 */ 45 @NodeInfo(cycles = CYCLES_10, size = SIZE_4) 46 public final class AtomicReadAndWriteNode extends AbstractMemoryCheckpoint implements Lowerable, MemoryCheckpoint.Single { 47 48 public static final NodeClass<AtomicReadAndWriteNode> TYPE = NodeClass.create(AtomicReadAndWriteNode.class); 49 @Input ValueNode object; 50 @Input ValueNode offset; 51 @Input ValueNode newValue; 52 53 protected final JavaKind valueKind; 54 protected final LocationIdentity locationIdentity; 55 56 public AtomicReadAndWriteNode(ValueNode object, ValueNode offset, ValueNode newValue, JavaKind valueKind, LocationIdentity locationIdentity) { 57 super(TYPE, StampFactory.forKind(newValue.getStackKind())); 58 this.object = object; 59 this.offset = offset; 60 this.newValue = newValue; 61 this.valueKind = valueKind; 62 this.locationIdentity = locationIdentity; 63 } 64 65 public ValueNode object() { 66 return object; 67 } 68 69 public ValueNode offset() { 70 return offset; 71 } 72 73 public ValueNode newValue() { 74 return newValue; 75 } 76 77 public JavaKind getValueKind() { 78 return valueKind; 79 } 80 81 @Override 82 public LocationIdentity getLocationIdentity() { 83 return locationIdentity; 84 } 85 86 @Override 87 public void lower(LoweringTool tool) { 88 tool.getLowerer().lower(this, tool); 89 } 90 }