Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ASTInstrumentListener.java @ 19826: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 |
parents | |
children | 37912559d662 |
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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/ASTInstrumentListener.java Thu Mar 12 18:04:30 2015 -0700 @@ -0,0 +1,57 @@ +/* + * 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.*; + +/** + * A listener of Truffle AST runtime execution events that can collect information, examine the + * execution state at a particular node, and possibly intervene on behalf of an external tool. + */ +public interface ASTInstrumentListener { + + /** + * Receive notification that an AST node's execute method is about to be called. + */ + void enter(Probe probe, Node node, VirtualFrame vFrame); + + /** + * Receive notification that an AST Node's {@code void}-valued execute method has just returned. + */ + void returnVoid(Probe probe, Node node, VirtualFrame vFrame); + + /** + * Receive notification that an AST Node's execute method has just returned a value (boxed if + * primitive). + */ + void returnValue(Probe probe, Node node, VirtualFrame vFrame, Object result); + + /** + * Receive notification that an AST Node's execute method has just thrown an exception. + */ + void returnExceptional(Probe probe, Node node, VirtualFrame vFrame, Exception exception); + +}