Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/access/SLWritePropertyCacheNode.java @ 22520:20ce790acc30
SL write node: rename update shape specialization for clarity
author | Benoit Daloze <benoit.daloze@jku.at> |
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date | Fri, 18 Dec 2015 16:41:31 +0100 |
parents | e7c2d89ddf20 |
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1 /* |
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2 * Copyright (c) 2013, 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 * The Universal Permissive License (UPL), Version 1.0 |
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6 * |
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7 * Subject to the condition set forth below, permission is hereby granted to any |
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8 * person obtaining a copy of this software, associated documentation and/or |
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9 * data (collectively the "Software"), free of charge and under any and all |
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10 * copyright rights in the Software, and any and all patent rights owned or |
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11 * freely licensable by each licensor hereunder covering either (i) the |
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12 * unmodified Software as contributed to or provided by such licensor, or (ii) |
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13 * the Larger Works (as defined below), to deal in both |
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14 * |
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15 * (a) the Software, and |
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16 * |
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17 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if |
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18 * one is included with the Software each a "Larger Work" to which the Software |
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19 * is contributed by such licensors), |
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20 * |
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21 * without restriction, including without limitation the rights to copy, create |
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22 * derivative works of, display, perform, and distribute the Software and make, |
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23 * use, sell, offer for sale, import, export, have made, and have sold the |
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24 * Software and the Larger Work(s), and to sublicense the foregoing rights on |
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25 * either these or other terms. |
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26 * |
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27 * This license is subject to the following condition: |
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28 * |
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29 * The above copyright notice and either this complete permission notice or at a |
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30 * minimum a reference to the UPL must be included in all copies or substantial |
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31 * portions of the Software. |
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32 * |
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33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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34 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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35 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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36 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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37 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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38 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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39 * SOFTWARE. |
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40 */ |
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41 package com.oracle.truffle.sl.nodes.access; |
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42 |
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43 import com.oracle.truffle.api.CompilerDirectives; |
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44 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary; |
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45 import com.oracle.truffle.api.dsl.Cached; |
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46 import com.oracle.truffle.api.dsl.Specialization; |
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47 import com.oracle.truffle.api.nodes.Node; |
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48 import com.oracle.truffle.api.object.DynamicObject; |
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49 import com.oracle.truffle.api.object.FinalLocationException; |
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50 import com.oracle.truffle.api.object.IncompatibleLocationException; |
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51 import com.oracle.truffle.api.object.Location; |
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52 import com.oracle.truffle.api.object.Property; |
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53 import com.oracle.truffle.api.object.Shape; |
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54 |
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55 public abstract class SLWritePropertyCacheNode extends Node { |
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56 protected static final int CACHE_LIMIT = 3; |
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57 |
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58 protected final String propertyName; |
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59 |
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60 public SLWritePropertyCacheNode(String propertyName) { |
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61 this.propertyName = propertyName; |
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62 } |
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63 |
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64 public abstract void executeObject(DynamicObject receiver, Object value); |
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65 |
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66 @Specialization(guards = {"location != null", "shape.check(receiver)", "canSet(location, receiver, value)"}, assumptions = "shape.getValidAssumption()", limit = "CACHE_LIMIT") |
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67 public void writeExistingPropertyCached(DynamicObject receiver, Object value, // |
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68 @Cached("lookupLocation(receiver, value)") Location location, // |
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69 @Cached("receiver.getShape()") Shape shape) { |
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70 try { |
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71 location.set(receiver, value, shape); |
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72 } catch (IncompatibleLocationException | FinalLocationException e) { |
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73 throw new IllegalStateException(e); |
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74 } |
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75 } |
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76 |
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77 @Specialization(guards = {"existingLocation == null", "oldShape.check(receiver)", "canSet(newLocation, receiver, value)"}, assumptions = {"oldShape.getValidAssumption()", |
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78 "newShape.getValidAssumption()"}, limit = "CACHE_LIMIT") |
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79 public void writeNewPropertyCached(DynamicObject receiver, Object value, // |
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80 @Cached("lookupLocation(receiver, value)") @SuppressWarnings("unused") Location existingLocation, // |
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81 @Cached("receiver.getShape()") Shape oldShape, // |
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82 @Cached("defineProperty(oldShape, value)") Shape newShape, // |
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83 @Cached("getLocation(newShape)") Location newLocation) { |
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84 try { |
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85 newLocation.set(receiver, value, oldShape, newShape); |
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86 } catch (IncompatibleLocationException e) { |
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87 throw new IllegalStateException(e); |
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88 } |
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89 } |
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90 |
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91 @Specialization(guards = "updateShape(receiver)") |
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92 public void updateShapeAndWrite(DynamicObject receiver, Object value) { |
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93 executeObject(receiver, value); |
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94 } |
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95 |
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96 @TruffleBoundary |
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97 @Specialization(contains = {"writeExistingPropertyCached", "writeNewPropertyCached", "updateShapeAndWrite"}) |
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98 public void writeUncached(DynamicObject receiver, Object value) { |
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99 receiver.define(propertyName, value); |
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100 } |
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101 |
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102 protected final Location lookupLocation(DynamicObject object, Object value) { |
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103 final Property property = object.getShape().getProperty(propertyName); |
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104 |
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105 if (property != null && property.getLocation().canSet(object, value)) { |
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106 return property.getLocation(); |
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107 } else { |
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108 return null; |
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109 } |
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110 } |
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111 |
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112 protected final Shape defineProperty(Shape oldShape, Object value) { |
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113 return oldShape.defineProperty(propertyName, value, 0); |
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114 } |
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115 |
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116 protected final Location getLocation(Shape newShape) { |
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117 return newShape.getProperty(propertyName).getLocation(); |
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118 } |
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119 |
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120 protected static boolean canSet(Location location, DynamicObject receiver, Object value) { |
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121 return location.canSet(receiver, value); |
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122 } |
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123 |
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124 protected static boolean updateShape(DynamicObject object) { |
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125 CompilerDirectives.transferToInterpreter(); |
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126 return object.updateShape(); |
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127 } |
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128 |
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129 } |