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diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/SourceListener.java @ 15605:bb9473723904

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Truffle/Instrumentation: - Merge instrumentation support into the general execution context; remove separate Instrumentation interface and implementation - Generalize the ?tagging? mechanism for extensibility: the enum PhylumTag is now an interface, and the standard tags moved to the new enum StandardTag - A new ?trap? mechanism interrupts program execution at any probed node holding a specified PhylumTag; this replaces some other special-purpose code. - Refine several interface by factoring out callback methods and simplifying collaboration among key implementation classes.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Mon, 12 May 2014 20:17:25 -0700
parents
children 915ebb306fcc
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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/SourceListener.java	Mon May 12 20:17:25 2014 -0700
@@ -0,0 +1,51 @@
+/*
+ * 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.*;
+
+/**
+ * A client of the instrumentation framework that requests event notifications from the language
+ * engine when sources are loaded.
+ * <p>
+ * <strong>Disclaimer:</strong> experimental interface under development.
+ */
+public interface SourceListener {
+
+    /**
+     * The guest language runtime is starting to load a source. Care should be taken to ensure that
+     * under any circumstance there is always a following call to {@link #loadEnding(Source)} with
+     * the same argument.
+     */
+    void loadStarting(Source source);
+
+    /**
+     * The guest language runtime has finished loading a source. Care should be taken to ensure that
+     * under any circumstance there is always a prior call to {@link #loadStarting(Source)} with the
+     * same argument.
+     */
+    void loadEnding(Source source);
+
+}