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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorExitNode.java @ 10090:ae6f0c381087

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split MemoryCheckpoint interface into Single and Multi
author Lukas Stadler <lukas.stadler@jku.at>
date Wed, 19 Jun 2013 16:42:56 +0200
parents b4f12c603be5
children ae619d70bf4b
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1 /*
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2 * Copyright (c) 2009, 2012, 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.api.meta.*;
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26 import com.oracle.graal.graph.*;
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27 import com.oracle.graal.nodes.*;
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28 import com.oracle.graal.nodes.extended.*;
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29 import com.oracle.graal.nodes.spi.*;
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31 /**
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32 * The {@code MonitorEnterNode} represents a monitor release.
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33 */
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34 public final class MonitorExitNode extends AccessMonitorNode implements Virtualizable, Lowerable, Node.IterableNodeType, MonitorExit, MemoryCheckpoint.Single, MonitorReference {
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35
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36 private int lockDepth;
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38 /**
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39 * Creates a new MonitorExitNode.
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40 *
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41 * @param object the instruction produces the object value
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42 */
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43 public MonitorExitNode(ValueNode object, int lockDepth) {
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44 super(object);
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45 this.lockDepth = lockDepth;
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46 }
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47
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48 @Override
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49 public LocationIdentity getLocationIdentity() {
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50 return LocationIdentity.ANY_LOCATION;
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51 }
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52
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53 @Override
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54 public void lower(LoweringTool tool, LoweringType loweringType) {
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55 tool.getRuntime().lower(this, tool);
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56 }
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58 public int getLockDepth() {
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59 return lockDepth;
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60 }
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61
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62 public void setLockDepth(int lockDepth) {
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63 this.lockDepth = lockDepth;
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64 }
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66 @Override
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67 public void virtualize(VirtualizerTool tool) {
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68 State state = tool.getObjectState(object());
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69 if (state != null && state.getState() == EscapeState.Virtual && state.getVirtualObject().hasIdentity()) {
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70 int removedLock = state.removeLock();
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71 assert removedLock == getLockDepth();
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72 tool.delete();
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73 }
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74 }
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75 }