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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/SLRootNode.java @ 16958:997899955e72

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Instrumentation: removed ExecutionContext parameter from probe method in Instrumentable SL/Instrumentation: SLRootNode's now store SLContext. New method added to SLStatementNode to find the root node and get its SLContext
author David Piorkowski <david.piorkowski@oracle.com>
date Tue, 26 Aug 2014 11:00:30 -0700
parents 111bf82514ca
children 158c9ba66e45
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1 /*
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2 * Copyright (c) 2012, 2014, 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.truffle.sl.nodes;
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24
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25 import com.oracle.truffle.api.frame.*;
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26 import com.oracle.truffle.api.nodes.*;
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27 import com.oracle.truffle.sl.builtins.*;
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28 import com.oracle.truffle.sl.nodes.controlflow.*;
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29 import com.oracle.truffle.sl.runtime.*;
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30
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31 /**
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32 * The root of all SL execution trees. It is a Truffle requirement that the tree root extends the
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33 * class {@link RootNode}. This class is used for both builtin and user-defined functions. For
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34 * builtin functions, the {@link #bodyNode} is a subclass of {@link SLBuiltinNode}. For user-defined
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35 * functions, the {@link #bodyNode} is a {@link SLFunctionBodyNode}.
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36 */
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37 @NodeInfo(language = "Simple Language", description = "The root of all Simple Language execution trees")
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38 public final class SLRootNode extends RootNode {
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39
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40 /** The function body that is executed, and specialized during execution. */
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41 @Child private SLExpressionNode bodyNode;
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42
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43 /**
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44 * A copy of the uninitialized body. When performing method inlining, it is beneficial to inline
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45 * the unspecialized function body, so that it is specialized in the context of the caller. This
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46 * makes the specializations of the inlined function more precise.
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47 */
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48 private final SLExpressionNode uninitializedBodyNode;
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49
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50 /** The name of the function, for printing purposes only. */
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51 private final String name;
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52
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53 /** The Simple execution context for this tree **/
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54 private final SLContext context;
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55
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56 public SLRootNode(SLContext context, FrameDescriptor frameDescriptor, SLExpressionNode bodyNode, String name) {
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57 super(null, frameDescriptor);
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58 /* Deep copy the body before any specialization occurs during execution. */
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59 this.uninitializedBodyNode = NodeUtil.cloneNode(bodyNode);
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60 this.bodyNode = bodyNode;
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61 this.name = name;
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62 this.context = context;
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63 }
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64
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65 @Override
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66 public Object execute(VirtualFrame frame) {
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67 return bodyNode.executeGeneric(frame);
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68 }
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69
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70 @Override
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71 public boolean isSplittable() {
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72 return true;
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73 }
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75 @Override
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76 public RootNode split() {
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77 return new SLRootNode(this.context, getFrameDescriptor().shallowCopy(), NodeUtil.cloneNode(uninitializedBodyNode), name);
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78 }
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79
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80 @Override
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81 public String toString() {
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82 return "root " + name;
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83 }
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84
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85 public SLContext getSLContext() {
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86 return this.context;
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87 }
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88 }