Mercurial > hg > graal-jvmci-8
annotate graal/GraalCompiler/src/com/sun/c1x/ir/AccessMonitor.java @ 2846:9b8c194c1b1f
Small clean up.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 07 Jun 2011 15:13:22 +0200 |
parents | 569228710be8 |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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.sun.c1x.ir; |
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24 |
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25 import com.oracle.graal.graph.*; |
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26 import com.sun.cri.ci.*; |
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27 |
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28 /** |
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29 * The {@code AccessMonitor} instruction is the base class of both monitor acquisition and release. |
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30 */ |
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31 public abstract class AccessMonitor extends StateSplit { |
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32 |
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33 private static final int INPUT_COUNT = 2; |
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34 private static final int INPUT_OBJECT = 0; |
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35 private static final int INPUT_LOCK_ADDRESS = 1; |
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36 |
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37 private static final int SUCCESSOR_COUNT = 0; |
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38 |
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39 @Override |
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40 protected int inputCount() { |
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41 return super.inputCount() + INPUT_COUNT; |
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42 } |
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43 |
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44 @Override |
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45 protected int successorCount() { |
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46 return super.successorCount() + SUCCESSOR_COUNT; |
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47 } |
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48 |
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49 /** |
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50 * The instruction producing the object locked or unlocked by this instruction. |
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51 */ |
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52 public Value object() { |
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53 return (Value) inputs().get(super.inputCount() + INPUT_OBJECT); |
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54 } |
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55 |
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56 public Value setObject(Value n) { |
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57 return (Value) inputs().set(super.inputCount() + INPUT_OBJECT, n); |
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58 } |
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59 |
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60 /** |
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61 * The instruction producing the address of the lock object. |
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62 */ |
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63 public Value lockAddress() { |
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64 return (Value) inputs().get(super.inputCount() + INPUT_LOCK_ADDRESS); |
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65 } |
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66 |
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67 public Value setLockAddress(Value n) { |
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68 return (Value) inputs().set(super.inputCount() + INPUT_LOCK_ADDRESS, n); |
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69 } |
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70 |
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71 /** |
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72 * The lock number of this monitor access. |
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73 */ |
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74 public final int lockNumber; |
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75 |
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76 /** |
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77 * Creates a new AccessMonitor instruction. |
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78 * |
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79 * @param object the instruction producing the object |
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80 * @param lockAddress the address of the on-stack lock object or {@code null} if the runtime does not place locks on the stack |
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81 * @param stateBefore the state before executing the monitor operation |
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82 * @param lockNumber the number of the lock being acquired |
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83 * @param inputCount |
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84 * @param successorCount |
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85 * @param graph |
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86 */ |
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87 public AccessMonitor(Value object, Value lockAddress, int lockNumber, int inputCount, int successorCount, Graph graph) { |
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88 super(CiKind.Illegal, inputCount + INPUT_COUNT, successorCount + SUCCESSOR_COUNT, graph); |
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89 this.lockNumber = lockNumber; |
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90 setObject(object); |
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91 setLockAddress(lockAddress); |
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92 } |
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93 } |