Mercurial > hg > graal-compiler
diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/NullInstrumentEventListener.java @ 15279:0c6d8a08e31b
Truffle: Major cleanup and extension of the Truffle Instrumentation framework in com.oracle.truffle.api
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Sun, 20 Apr 2014 20:37:27 -0700 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/NullInstrumentEventListener.java Sun Apr 20 20:37:27 2014 -0700 @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2013, 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.impl; + +import com.oracle.truffle.api.*; +import com.oracle.truffle.api.frame.*; +import com.oracle.truffle.api.instrument.*; +import com.oracle.truffle.api.nodes.*; + +/** + * Minimal, mostly no-op implementation of instrumentation services. + */ +public final class NullInstrumentEventListener implements InstrumentEventListener { + + public static final InstrumentEventListener INSTANCE = new NullInstrumentEventListener(); + + private NullInstrumentEventListener() { + } + + public void callEntering(Node astNode, String name) { + } + + public void callReturned(Node astNode, String name) { + } + + public void haltedAt(Node astNode, MaterializedFrame frame) { + } + + public void loadStarting(Source source) { + } + + public void loadEnding(Source source) { + } + +}