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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/AccessMonitorNode.java @ 21556:48c1ebd24120

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renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Wed, 27 May 2015 00:36:16 +0200
parents cba35d171cd1
children 0e095e2c24e2
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1 /*
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2 * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.nodes.java;
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24
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25 import com.oracle.graal.compiler.common.type.*;
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26 import com.oracle.graal.graph.*;
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27 import com.oracle.graal.nodeinfo.*;
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28 import com.oracle.graal.nodes.*;
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29 import com.oracle.graal.nodes.memory.*;
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30 import com.oracle.jvmci.code.*;
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31
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32 /**
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33 * The {@code AccessMonitorNode} is the base class of both monitor acquisition and release.
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34 * <p>
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35 * The Java bytecode specification allows non-balanced locking. Graal does not handle such cases and
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36 * throws a {@link BailoutException} instead during graph building.
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37 */
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38 @NodeInfo(allowedUsageTypes = {InputType.Memory})
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39 public abstract class AccessMonitorNode extends AbstractMemoryCheckpoint implements MemoryCheckpoint, DeoptimizingNode.DeoptBefore, DeoptimizingNode.DeoptAfter {
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40
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41 public static final NodeClass<AccessMonitorNode> TYPE = NodeClass.create(AccessMonitorNode.class);
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42 @OptionalInput(InputType.State) FrameState stateBefore;
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43 @Input ValueNode object;
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44 @Input(InputType.Association) MonitorIdNode monitorId;
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45
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46 @Override
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47 public boolean canDeoptimize() {
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48 return true;
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49 }
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50
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51 public FrameState stateBefore() {
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52 return stateBefore;
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53 }
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54
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55 @Override
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56 public void setStateBefore(FrameState f) {
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57 updateUsages(stateBefore, f);
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58 stateBefore = f;
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59 }
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60
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61 public ValueNode object() {
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62 return object;
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63 }
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64
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65 public MonitorIdNode getMonitorId() {
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66 return monitorId;
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67 }
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68
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69 /**
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70 * Creates a new AccessMonitor instruction.
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71 *
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72 * @param object the instruction producing the object
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73 */
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74 protected AccessMonitorNode(NodeClass<? extends AccessMonitorNode> c, ValueNode object, MonitorIdNode monitorId) {
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75 super(c, StampFactory.forVoid());
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76 this.object = object;
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77 this.monitorId = monitorId;
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78 }
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79 }