Mercurial > hg > truffle
view 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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/* * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.api.instrument.impl; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.instrument.*; import com.oracle.truffle.api.nodes.*; /** * An abstract listener for AST {@linkplain ASTInstrumentListener execution events} that ignores * return values and supports handling all events by overriding only two methods: * <ul> * <li>{@link #enter(Probe, Node, VirtualFrame)}, and</li> * <li>{@link #returnAny(Probe, Node, VirtualFrame)}.</li> * </ul> */ public abstract class SimpleASTInstrumentListener implements ASTInstrumentListener { public void enter(Probe probe, Node node, VirtualFrame vFrame) { } /** * Receive notification that one of an AST Node's execute methods has just returned by any * means: with or without a return value (ignored) or via exception (ignored). * * @param probe where the event originated * @param node specific node of the event * @param vFrame */ protected void returnAny(Probe probe, Node node, VirtualFrame vFrame) { } public final void returnVoid(Probe probe, Node node, VirtualFrame vFrame) { returnAny(probe, node, vFrame); } public final void returnValue(Probe probe, Node node, VirtualFrame vFrame, Object result) { returnAny(probe, node, vFrame); } public final void returnExceptional(Probe probe, Node node, VirtualFrame vFrame, Exception e) { returnAny(probe, node, vFrame); } }