1/* 2 * Copyright (c) 2009, 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 */ 23package org.graalvm.compiler.nodes.java; 24 25import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_80; 26import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_80; 27 28import org.graalvm.compiler.core.common.LocationIdentity; 29import org.graalvm.compiler.core.common.type.ObjectStamp; 30import org.graalvm.compiler.graph.IterableNodeType; 31import org.graalvm.compiler.graph.NodeClass; 32import org.graalvm.compiler.nodeinfo.NodeInfo; 33import org.graalvm.compiler.nodes.ValueNode; 34import org.graalvm.compiler.nodes.extended.MonitorEnter; 35import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 36import org.graalvm.compiler.nodes.spi.Lowerable; 37import org.graalvm.compiler.nodes.spi.LoweringTool; 38import org.graalvm.compiler.nodes.spi.Virtualizable; 39import org.graalvm.compiler.nodes.spi.VirtualizerTool; 40import org.graalvm.compiler.nodes.virtual.VirtualObjectNode; 41 42/** 43 * The {@code RawMonitorEnterNode} represents the acquisition of a monitor. The object needs to 44 * already be non-null and the hub is an additional parameter to the node. 45 */ 46// @formatter:off 47@NodeInfo(cycles = CYCLES_80, 48 cyclesRationale = "Rough estimation of the enter operation", 49 size = SIZE_80) 50// @formatter:on 51public final class RawMonitorEnterNode extends AccessMonitorNode implements Virtualizable, Lowerable, IterableNodeType, MonitorEnter, MemoryCheckpoint.Single { 52 53 public static final NodeClass<RawMonitorEnterNode> TYPE = NodeClass.create(RawMonitorEnterNode.class); 54 55 @Input ValueNode hub; 56 57 public RawMonitorEnterNode(ValueNode object, ValueNode hub, MonitorIdNode monitorId) { 58 super(TYPE, object, monitorId); 59 assert ((ObjectStamp) object.stamp()).nonNull(); 60 this.hub = hub; 61 } 62 63 @Override 64 public LocationIdentity getLocationIdentity() { 65 return LocationIdentity.any(); 66 } 67 68 @Override 69 public void lower(LoweringTool tool) { 70 tool.getLowerer().lower(this, tool); 71 } 72 73 @Override 74 public void virtualize(VirtualizerTool tool) { 75 ValueNode alias = tool.getAlias(object()); 76 if (alias instanceof VirtualObjectNode) { 77 VirtualObjectNode virtual = (VirtualObjectNode) alias; 78 if (virtual.hasIdentity()) { 79 tool.addLock(virtual, getMonitorId()); 80 tool.delete(); 81 } 82 } 83 } 84 85 public ValueNode getHub() { 86 return hub; 87 } 88} 89