--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.compiler/src/com/sun/c1x/observer/CompilationObserver.java	Wed Jun 08 08:42:25 2011 +0200
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ * 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.sun.c1x.observer;
+
+import com.sun.c1x.*;
+
+/**
+ * Interface for classes that observe events of an {@link ObservableCompiler}.
+ *
+ * @author Peter Hofer
+ */
+public interface CompilationObserver {
+
+    /**
+     * Called when compilation of a method has started. This is always the first event raised for a particular
+     * {@link C1XCompilation}.
+     *
+     * @param event Information associated with the event and current state of the compilation.
+     */
+    void compilationStarted(CompilationEvent event);
+
+    /**
+     * Called when an event has occurred, for example that a particular phase in the compilation has been entered.
+     *
+     * @param event Information associated with the event and current state of the compilation.
+     */
+    void compilationEvent(CompilationEvent event);
+
+    /**
+     * Called when compilation of a method has completed (successfully or not). This is always the last event raised for
+     * a particular {@link C1XCompilation}.
+     *
+     * @param event Information associated with the event and current state of the compilation.
+     */
+    void compilationFinished(CompilationEvent event);
+
+}