--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/AdvancedInstrumentResultListener.java	Thu May 28 17:44:05 2015 +0200
@@ -0,0 +1,74 @@
+/*
+ * 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.CompilerDirectives.TruffleBoundary;
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.api.nodes.*;
+
+/**
+ * Listener for receiving the result a client-provided {@linkplain AdvancedInstrumentRoot AST
+ * fragment}, when executed by a
+ * {@linkplain Instrument#create(AdvancedInstrumentResultListener, AdvancedInstrumentRootFactory, Class, String)
+ * Advanced Instrument}.
+ *
+ * @see Instrument
+ * @see AdvancedInstrumentRoot
+ * @see AdvancedInstrumentRootFactory
+ */
+public interface AdvancedInstrumentResultListener {
+
+    /**
+     * Notifies listener that a client-provided {@linkplain AdvancedInstrumentRoot AST fragment} has
+     * been executed by an
+     * {@linkplain Instrument#create(AdvancedInstrumentResultListener, AdvancedInstrumentRootFactory, Class, String)
+     * Advanced Instrument} with the specified result, possibly {@code null}.
+     * <p>
+     * <strong>Note: </strong> Truffle will attempt to optimize implementations through partial
+     * evaluation; annotate with {@link TruffleBoundary} if this should not be permitted.
+     *
+     * @param node the guest-language AST node to which the host Instrument's {@link Probe} is
+     *            attached
+     * @param vFrame execution frame at the guest-language AST node
+     * @param result the result of this AST fragment's execution
+     */
+    void notifyResult(Node node, VirtualFrame vFrame, Object result);
+
+    /**
+     * Notifies listener that execution of client-provided {@linkplain AdvancedInstrumentRoot AST
+     * fragment} filed during execution by a @linkplain
+     * Instrument#create(AdvancedInstrumentRootFactory, String) Advanced Instrument}.
+     * <p>
+     * <strong>Note: </strong> Truffle will attempt to optimize implementations through partial
+     * evaluation; annotate with {@link TruffleBoundary} if this should not be permitted.
+     *
+     * @param node the guest-language AST node to which the host Instrument's {@link Probe} is
+     *            attached
+     * @param vFrame execution frame at the guest-language AST node
+     * @param ex the exception
+     */
+    void notifyFailure(Node node, VirtualFrame vFrame, RuntimeException ex);
+
+}