--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/DebugDumpHandler.java	Fri Jan 20 16:26:35 2012 +0100
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012, 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.oracle.max.graal.debug;
+
+public interface DebugDumpHandler {
+    void dump(Object object, String message);
+}

--- a/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugScope.java	Fri Jan 20 16:19:41 2012 +0100
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugScope.java	Fri Jan 20 16:26:35 2012 +0100
@@ -95,7 +95,16 @@
         }
     }
 
-    public void dump(Object object, String msg, Object[] args) {
+    public void dump(Object object, String formatString, Object[] args) {
+        if (isDumpEnabled()) {
+            String message = String.format(formatString, args);
+            for (Object o : Debug.context()) {
+                if (o instanceof DebugDumpHandler) {
+                    DebugDumpHandler dumpHandler = (DebugDumpHandler) o;
+                    dumpHandler.dump(object, message);
+                }
+            }
+        }
     }
 
     public <T> T scope(String newName, Runnable runnable, Callable<T> callable, boolean sandbox, Object[] newContext) {