Mercurial > hg > truffle
comparison graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/SimpleASTInstrumentListener.java @ 19819:a5b09092003a
Truffle/Instrumentation (part 2): For clients of Instrumentation, replace the TruffleEventListener interface with two: InstrumentListener, and ASTInstrumentListener. The former is simple, completely Truffle-safe (can't affect Truffle execution), and designed for simple tools. The latter is similar to the previous interface.
| author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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| date | Thu, 12 Mar 2015 18:04:30 -0700 |
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| 19818:907128d02b31 | 19819:a5b09092003a |
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| 1 /* | |
| 2 * Copyright (c) 2015, 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.impl; | |
| 26 | |
| 27 import com.oracle.truffle.api.frame.*; | |
| 28 import com.oracle.truffle.api.instrument.*; | |
| 29 import com.oracle.truffle.api.nodes.*; | |
| 30 | |
| 31 /** | |
| 32 * An abstract listener for AST {@linkplain ASTInstrumentListener execution events} that ignores | |
| 33 * return values and supports handling all events by overriding only two methods: | |
| 34 * <ul> | |
| 35 * <li>{@link #enter(Probe, Node, VirtualFrame)}, and</li> | |
| 36 * <li>{@link #returnAny(Probe, Node, VirtualFrame)}.</li> | |
| 37 * </ul> | |
| 38 */ | |
| 39 public abstract class SimpleASTInstrumentListener implements ASTInstrumentListener { | |
| 40 | |
| 41 public void enter(Probe probe, Node node, VirtualFrame vFrame) { | |
| 42 } | |
| 43 | |
| 44 /** | |
| 45 * Receive notification that one of an AST Node's execute methods has just returned by any | |
| 46 * means: with or without a return value (ignored) or via exception (ignored). | |
| 47 * | |
| 48 * @param probe where the event originated | |
| 49 * @param node specific node of the event | |
| 50 * @param vFrame | |
| 51 */ | |
| 52 protected void returnAny(Probe probe, Node node, VirtualFrame vFrame) { | |
| 53 } | |
| 54 | |
| 55 public final void returnVoid(Probe probe, Node node, VirtualFrame vFrame) { | |
| 56 returnAny(probe, node, vFrame); | |
| 57 } | |
| 58 | |
| 59 public final void returnValue(Probe probe, Node node, VirtualFrame vFrame, Object result) { | |
| 60 returnAny(probe, node, vFrame); | |
| 61 } | |
| 62 | |
| 63 public final void returnExceptional(Probe probe, Node node, VirtualFrame vFrame, Exception e) { | |
| 64 returnAny(probe, node, vFrame); | |
| 65 } | |
| 66 | |
| 67 } |