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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ASTNodeProber.java @ 15779:8c34e2cc4add

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Truffle/Instrumentation: significant reorganization of the instrumentation framework's implementation and connection to the runtime ExecutionContext, with some new features, including a Tag-based "trap" mechanisms.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Mon, 19 May 2014 17:14:36 -0700
parents 0c6d8a08e31b
children 50d79ad439f1
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15279
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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1 /*
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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2 * Copyright (c) 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.
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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6 * under the terms of the GNU General Public License version 2 only, as
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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7 * published by the Free Software Foundation. Oracle designates this
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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8 * particular file as subject to the "Classpath" exception as provided
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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9 * by Oracle in the LICENSE file that accompanied this code.
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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14 * version 2 for more details (a copy is included in the LICENSE file that
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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15 * accompanied this code).
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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16 *
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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17 * You should have received a copy of the GNU General Public License version
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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18 * 2 along with this work; if not, write to the Free Software Foundation,
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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22 * or visit www.oracle.com if you need additional information or have any
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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23 * questions.
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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24 */
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25 package com.oracle.truffle.api.instrument;
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26
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27 import com.oracle.truffle.api.nodes.*;
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28
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29 /**
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30 * Implementation of a policy for <em>instrumenting</em> inserting a {@link Probe} at a Truffle AST
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31 * node.
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32 * <p>
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33 * Note that this interface is guest language agnostic, but current extensions are
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34 * language-specific. This will be revisited.
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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35 * <p>
0c6d8a08e31b Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
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36 * <strong>Disclaimer:</strong> experimental interface under development. Really!
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37 */
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38 public interface ASTNodeProber {
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39
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40 /**
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41 * Optionally applies <em>instrumentation</em> at a Truffle AST node, depending on guest
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42 * language characteristics and use-case policy.
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43 * <ul>
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44 * <li>if no instrumentation is to be applied, returns the AST node unmodified;</li>
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45 * <li>if an AST node is to be instrumented, then returns a newly created {@link Wrapper} that
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46 * <em>decorates</em> the AST node and notifies an associated {@link Probe} of all
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47 * {@link ExecutionEvents} at the wrapped AST node.</li>
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48 * <li>if the argument is itself a {@link Wrapper}, i.e. if the AST node at this site has
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49 * already been wrapped, then the wrapper is returned (with the possible addition of a
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50 * {@linkplain PhylumTag tag}).</li>
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51 * </ul>
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52 *
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53 * @param astNode an AST node to which instrumentation might be applied
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54 * @param tag an optional category directing how the node, if instrumented, should be perceived
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55 * by tool users
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56 * @param args additional arguments for instrumentation specific to a particular guest language
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57 * @return if no instrumentation should be applied or if the node is a {@link Wrapper} then the
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58 * unmodified node; otherwise a newly created {@link Wrapper} (whose child
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59 * {@code astNode}) with an associated {@link Probe} .
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60 */
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61
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62 Node probeAs(Node astNode, PhylumTag tag, Object... args);
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63 }