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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ProbeException.java @ 18985:867058575979
Truffle: Improved support for "probing" AST nodes:
- Node.isSafelyReplacaeableBy(Node) checks in advance if Node.replace(Node) would be unsafe (crash the VM).
- Hoist Probe() from language imlementations into Node; now completely language agnostic.
- Language implementations support probing by implementing Node.isInstrumentable() and Node.createWrapperNode()
- Node.Probe() throws ProbeException (without side effects) if the probe fails.
-- ProbeException contains an instance of ProbeFailure that diagnoses the failure in detail
- Additional measures to prevent instrumentation from being applied to internal InstrumentationNodes.
- Promote ProbeListener to top level interface and add a default implementation
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Tue, 27 Jan 2015 20:24:54 -0800 |
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1 /* |
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2 * Copyright (c) 2015, 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 |
867058575979
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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.instrument; |
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26 |
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27 import com.oracle.truffle.api.instrument.ProbeFailure.Reason; |
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28 import com.oracle.truffle.api.nodes.*; |
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29 |
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30 /** |
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31 * An exception thrown when {@link Node#probe()} fails because of an implementation failure. |
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32 * <p> |
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33 * Language and tool implementations should ensure that clients of tools never see this exception. |
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34 */ |
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35 public class ProbeException extends RuntimeException { |
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36 static final long serialVersionUID = 1L; |
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37 private final ProbeFailure failure; |
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38 |
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39 public ProbeException(Reason reason, Node parent, Node child, Object wrapper) { |
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40 this.failure = new ProbeFailure(reason, parent, child, wrapper); |
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41 } |
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42 |
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43 public ProbeFailure getFailure() { |
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44 return failure; |
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45 } |
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46 |
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47 @Override |
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48 public String toString() { |
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49 return failure.getMessage(); |
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50 } |
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51 |
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52 } |