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comparison graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/StandardTag.java @ 15605:bb9473723904

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Truffle/Instrumentation: - Merge instrumentation support into the general execution context; remove separate Instrumentation interface and implementation - Generalize the ?tagging? mechanism for extensibility: the enum PhylumTag is now an interface, and the standard tags moved to the new enum StandardTag - A new ?trap? mechanism interrupts program execution at any probed node holding a specified PhylumTag; this replaces some other special-purpose code. - Refine several interface by factoring out callback methods and simplifying collaboration among key implementation classes.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Mon, 12 May 2014 20:17:25 -0700
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1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package com.oracle.truffle.api.instrument;
26
27 /**
28 * A somewhat language-agnostic set of phylum categories, suitable for conventional imperative
29 * languages, and is being developed incrementally.
30 * <p>
31 * The need for alternative sets of tags is likely to arise, perhaps for other families of languages
32 * (for example for mostly expression-oriented languages) or even for specific languages.
33 * <p>
34 * <strong>Disclaimer:</strong> experimental interface under development.
35 *
36 * @see Probe
37 * @see Wrapper
38 */
39 public enum StandardTag implements PhylumTag {
40
41 /**
42 * Marker for a variable assignment.
43 */
44 ASSIGNMENT("assignment", "a variable assignment"),
45
46 /**
47 * Marker for a call site.
48 */
49 CALL("call", "a method/procedure call site"),
50
51 /**
52 * Marker for a location where a guest language exception is about to be thrown.
53 */
54 THROW("throw", "creator of an exception"),
55
56 /**
57 * Marker for a location where ordinary "stepping" should halt.
58 */
59 STATEMENT("statement", "basic unit of the language, suitable for \"stepping\" in a debugger");
60
61 private final String name;
62 private final String description;
63
64 private StandardTag(String name, String description) {
65 this.name = name;
66 this.description = description;
67 }
68
69 public String getName() {
70 return name;
71 }
72
73 public String getDescription() {
74 return description;
75 }
76
77 }