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1 /*
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2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
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3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
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4 * redistribute it and/or modify it under the terms of the:
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5 *
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6 * Eclipse Public License version 1.0
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7 * GNU General Public License version 2
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8 * GNU Lesser General Public License version 2.1
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9 */
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10 package com.oracle.truffle.ruby.nodes.call;
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11
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12 import java.util.*;
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13
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14 import com.oracle.truffle.api.*;
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15 import com.oracle.truffle.api.frame.*;
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16 import com.oracle.truffle.api.nodes.*;
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17 import com.oracle.truffle.ruby.nodes.*;
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18 import com.oracle.truffle.ruby.runtime.*;
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19 import com.oracle.truffle.ruby.runtime.core.*;
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20 import com.oracle.truffle.ruby.runtime.lookup.*;
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21 import com.oracle.truffle.ruby.runtime.objects.*;
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22
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23 /**
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24 * A node in the dispatch chain that comes after the boxing point and caches a method on a full
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25 * boxed {@link RubyBasicObject}, matching it by looking at the lookup node and assuming it has not
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26 * been modified.
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27 */
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28 public class InlinedBoxedDispatchNode extends BoxedDispatchNode {
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29
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30 private final LookupNode expectedLookupNode;
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31 private final Assumption unmodifiedAssumption;
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32
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33 private final InlinableMethodImplementation method;
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34 private final RubyRootNode rootNode;
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35
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36 @Child protected BoxedDispatchNode next;
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37
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38 public InlinedBoxedDispatchNode(RubyContext context, SourceSection sourceSection, LookupNode expectedLookupNode, InlinableMethodImplementation method, BoxedDispatchNode next) {
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39 super(context, sourceSection);
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40
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41 assert expectedLookupNode != null;
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42 assert method != null;
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43
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44 this.expectedLookupNode = expectedLookupNode;
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45 unmodifiedAssumption = expectedLookupNode.getUnmodifiedAssumption();
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46 this.method = method;
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47 this.rootNode = method.getCloneOfPristineRootNode();
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48 this.next = adoptChild(next);
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49 }
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50
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51 @Override
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52 public Object dispatch(VirtualFrame frame, RubyBasicObject receiverObject, RubyProc blockObject, Object[] argumentsObjects) {
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53 // Check the lookup node is what we expect
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54
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55 if (receiverObject.getLookupNode() != expectedLookupNode) {
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56 return next.dispatch(frame, receiverObject, blockObject, argumentsObjects);
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57 }
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58
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59 // Check the class has not been modified
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60
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61 try {
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62 unmodifiedAssumption.check();
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63 } catch (InvalidAssumptionException e) {
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64 return respecialize("class modified", frame, receiverObject, blockObject, argumentsObjects);
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65 }
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66
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67 // Call the method
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68
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69 Object[] modifiedArgumentsObjects;
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70
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71 CompilerAsserts.compilationConstant(method.getShouldAppendCallNode());
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72
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73 if (method.getShouldAppendCallNode()) {
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74 modifiedArgumentsObjects = Arrays.copyOf(argumentsObjects, argumentsObjects.length + 1);
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75 modifiedArgumentsObjects[modifiedArgumentsObjects.length - 1] = this;
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76 } else {
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77 modifiedArgumentsObjects = argumentsObjects;
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78 }
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79
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80 final RubyArguments arguments = new RubyArguments(method.getDeclarationFrame(), receiverObject, blockObject, modifiedArgumentsObjects);
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81 final VirtualFrame inlinedFrame = Truffle.getRuntime().createVirtualFrame(frame.pack(), arguments, method.getFrameDescriptor());
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82 return rootNode.execute(inlinedFrame);
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83 }
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84 }
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