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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultCallTarget.java @ 18485:e3c95cbbb50c

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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Sun, 23 Nov 2014 16:07:23 -0800
parents 0a35e2789735
children 48eeda5dfdbf
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1 /*
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2 * Copyright (c) 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.impl;
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27 import com.oracle.truffle.api.*;
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28 import com.oracle.truffle.api.frame.*;
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29 import com.oracle.truffle.api.nodes.*;
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30
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31 /**
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32 * This is an implementation-specific class. Do not use or instantiate it. Instead, use
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33 * {@link TruffleRuntime#createCallTarget(RootNode)} to create a {@link RootCallTarget}.
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34 */
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35 public class DefaultCallTarget implements RootCallTarget {
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36
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37 private final RootNode rootNode;
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38
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39 public DefaultCallTarget(RootNode function) {
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40 this.rootNode = function;
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41 this.rootNode.adoptChildren();
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42 this.rootNode.applyInstrumentation();
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43 this.rootNode.setCallTarget(this);
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44 }
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45
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46 @Override
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47 public String toString() {
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48 return rootNode.toString();
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49 }
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50
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51 public final RootNode getRootNode() {
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52 return rootNode;
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53 }
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54
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55 @Override
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56 public Object call(Object... args) {
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57 final VirtualFrame frame = new DefaultVirtualFrame(getRootNode().getFrameDescriptor(), args);
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58 FrameInstance oldCurrentFrame = defaultTruffleRuntime().setCurrentFrame(new FrameInstance() {
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59
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60 public Frame getFrame(FrameAccess access, boolean slowPath) {
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61 return frame;
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62 }
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63
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64 public boolean isVirtualFrame() {
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65 return false;
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66 }
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67
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68 public Node getCallNode() {
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69 return null;
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70 }
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72 public CallTarget getCallTarget() {
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73 return DefaultCallTarget.this;
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74 }
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75 });
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76 try {
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77 return getRootNode().execute(frame);
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78 } finally {
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79 defaultTruffleRuntime().setCurrentFrame(oldCurrentFrame);
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80 }
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81 }
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82
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83 private static DefaultTruffleRuntime defaultTruffleRuntime() {
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84 return (DefaultTruffleRuntime) Truffle.getRuntime();
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85 }
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86 }