Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/Probe.java @ 18243:b363053f6cac
Add missing import.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 01 Jul 2014 21:44:57 +0200 |
parents | 915ebb306fcc |
children | 50d79ad439f1 |
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/* * Copyright (c) 2014, 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; import com.oracle.truffle.api.source.*; /** * A collector of {@link ExecutionEvents} at a specific site (node) in a Truffle AST (generated by a * {@link Wrapper} inserted into the AST) for the purpose of <em>instrumentation</em>. For probes * associated with programmer-facing tools, there should be no more than one probe associated with a * particular piece of source code syntax (i.e. a {@link SourceSection}). * <p> * Any {@linkplain PhylumTag tags} associated with a particular piece of source code syntax are * managed by the probe. * <p> * When ASTs are copied, it is presumed that the probe for a site is shared by all AST nodes * representing that site. * <p> * A probe holds zero or more {@link Instrument}s, which can be added and removed dynamically. * Events reported to a probe are propagated to every attached instrument; the order is undefined. * <p> * Probe methods must be amenable to Truffle/Graal inlining on the assumption that the collection of * attached instruments seldom changes. The assumption is invalidated when instruments are added or * removed, but some instruments may change their internal state in such a way that the assumption * should also be invalidated. * <p> * <strong>Disclaimer:</strong> experimental interface under development. In particular, the * <em>notify</em> methods must be migrated to another interface. * * @see Instrument * @see Wrapper */ public interface Probe extends ExecutionEvents, PhylumTagged { /** * The source location with which this probe is (presumably uniquely) associated. */ SourceSection getSourceLocation(); /** * Mark this probe as being associated with an AST node in some category useful for debugging * and other tools. */ void tagAs(PhylumTag tag); /** * Adds an instrument to this probe. */ void addInstrument(Instrument newInstrument); /** * Removes an instrument from this probe. */ void removeInstrument(Instrument oldInstrument); }