--- a/graal/com.oracle.graal.debug/src/com/oracle/graal/debug/Debug.java	Fri Jun 15 15:38:42 2012 +0200
+++ b/graal/com.oracle.graal.debug/src/com/oracle/graal/debug/Debug.java	Fri Jun 15 15:48:44 2012 +0200
@@ -226,6 +226,14 @@
             public PrintStream output() {
                 return output;
             }
+
+            @Override
+            public void addToContext(Object o) {
+            }
+
+            @Override
+            public void removeFromContext(Object o) {
+            }
         };
     }
 

--- a/graal/com.oracle.graal.debug/src/com/oracle/graal/debug/DebugConfig.java	Fri Jun 15 15:38:42 2012 +0200
+++ b/graal/com.oracle.graal.debug/src/com/oracle/graal/debug/DebugConfig.java	Fri Jun 15 15:48:44 2012 +0200
@@ -28,21 +28,39 @@
 
 public interface DebugConfig {
     /**
+     * Determines if logging is enabled in the {@linkplain Debug#currentScope() current debug scope}.
+     *
      * @see Debug#log(String, Object...)
      */
     boolean isLogEnabled();
 
     /**
+     * Determines if metering is enabled in the {@linkplain Debug#currentScope() current debug scope}.
+     *
      * @see Debug#metric(String)
      */
     boolean isMeterEnabled();
 
     /**
+     * Determines if dumping is enabled in the {@linkplain Debug#currentScope() current debug scope}.
+     *
      * @see Debug#dump(Object, String, Object...)
      */
     boolean isDumpEnabled();
 
     /**
+     * Adds an object the context used by this configuration to do filtering.
+     */
+    void addToContext(Object o);
+
+    /**
+     * Removes an object the context used by this configuration to do filtering.
+     *
+     * This should only removes extra context added by {@link #addToContext(Object)}.
+     */
+    void removeFromContext(Object o);
+
+    /**
      * @see Debug#timer(String)
      */
     boolean isTimeEnabled();

--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotDebugConfig.java	Fri Jun 15 15:38:42 2012 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotDebugConfig.java	Fri Jun 15 15:48:44 2012 +0200
@@ -43,6 +43,7 @@
     private final MethodFilter[] methodFilter;
     private final List<DebugDumpHandler> dumpHandlers = new ArrayList<>();
     private final PrintStream output;
+    private final Set<Object> extraFilters = new HashSet<>();
 
     public HotSpotDebugConfig(String logFilter, String meterFilter, String timerFilter, String dumpFilter, String methodFilter, PrintStream output) {
         this.logFilter = DebugFilter.parse(logFilter);
@@ -102,14 +103,18 @@
     }
 
     private boolean checkMethodFilter() {
-        if (methodFilter == null) {
+        if (methodFilter == null && extraFilters.isEmpty()) {
             return true;
         } else {
             for (Object o : Debug.context()) {
-                if (o instanceof JavaMethod) {
-                    for (MethodFilter filter : methodFilter) {
-                        if (filter.matches((JavaMethod) o)) {
-                            return true;
+                if (extraFilters.contains(o)) {
+                    return true;
+                } else if (methodFilter != null) {
+                    if (o instanceof JavaMethod) {
+                        for (MethodFilter filter : methodFilter) {
+                            if (filter.matches((JavaMethod) o)) {
+                                return true;
+                            }
                         }
                     }
                 }
@@ -176,4 +181,14 @@
     public Collection<? extends DebugDumpHandler> dumpHandlers() {
         return dumpHandlers;
     }
+
+    @Override
+    public void addToContext(Object o) {
+        extraFilters.add(o);
+    }
+
+    @Override
+    public void removeFromContext(Object o) {
+        extraFilters.remove(o);
+    }
 }