Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ToolNode.java @ 20106:2e3cc2a27711
Truffle/Instrumentation: a new flavor of Instrument that lazily provides an AST fragment to be attached/adopted directly into a running AST, and to which execution event notifications will be routed. Important use cases so far include conditional breakpoints (with optimizeable conditions) and Ruby set_trace_func.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Tue, 31 Mar 2015 19:01:07 -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/ToolNode.java Tue Mar 31 19:01:07 2015 -0700 @@ -0,0 +1,55 @@ +/* + * 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; + +import com.oracle.truffle.api.frame.*; +import com.oracle.truffle.api.nodes.*; + +/** + * Root of a tool-provided AST fragment that can be attached directly into an executing AST via + * {@link Instrument#create(ToolNodeInstrumentListener, String)}. + * <p> + * <strong>Note:</strong> Instances of this class will in some situations be cloned by the + * instrumentation platform for attachment at equivalent locations in cloned parent ASTs. + */ +public abstract class ToolNode extends Node implements InstrumentationNode.TruffleEvents, InstrumentationNode { + + public void enter(Node node, VirtualFrame vFrame) { + } + + public void returnVoid(Node node, VirtualFrame vFrame) { + } + + public void returnValue(Node node, VirtualFrame vFrame, Object result) { + } + + public void returnExceptional(Node node, VirtualFrame vFrame, Exception exception) { + } + + public String instrumentationInfo() { + return null; + } + +}