--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/debug/AbstractDebugCompilationListener.java	Mon Oct 27 15:18:14 2014 +0100
@@ -0,0 +1,83 @@
+package com.oracle.graal.truffle.debug;
+
+import java.io.*;
+import java.util.*;
+
+import com.oracle.graal.api.code.*;
+import com.oracle.graal.debug.*;
+import com.oracle.graal.nodes.*;
+import com.oracle.graal.truffle.*;
+import com.oracle.truffle.api.*;
+
+public class AbstractDebugCompilationListener implements GraalTruffleCompilationListener {
+
+    protected static final PrintStream OUT = TTY.out().out();
+
+    public void notifyCompilationQueued(OptimizedCallTarget target) {
+    }
+
+    public void notifyCompilationDequeued(OptimizedCallTarget target, Object source, CharSequence reason) {
+    }
+
+    public void notifyCompilationFailed(OptimizedCallTarget target, StructuredGraph graph, Throwable t) {
+    }
+
+    public void notifyCompilationStarted(OptimizedCallTarget target) {
+    }
+
+    public void notifyCompilationTruffleTierFinished(OptimizedCallTarget target, StructuredGraph graph) {
+    }
+
+    public void notifyCompilationSuccess(OptimizedCallTarget target, StructuredGraph graph, CompilationResult result) {
+    }
+
+    public void notifyCompilationInvalidated(OptimizedCallTarget target, Object source, CharSequence reason) {
+    }
+
+    public void notifyShutdown(TruffleRuntime runtime) {
+    }
+
+    protected static void log(int indent, String msg, String details, Map<String, Object> properties) {
+        StringBuilder sb = new StringBuilder();
+        sb.append(String.format("[truffle] %-16s ", msg));
+        for (int i = 0; i < indent; i++) {
+            sb.append(' ');
+        }
+        sb.append(String.format("%-" + (60 - indent) + "s", details));
+        if (properties != null) {
+            for (String property : properties.keySet()) {
+                Object value = properties.get(property);
+                if (value == null) {
+                    continue;
+                }
+                sb.append('|');
+                sb.append(property);
+
+                StringBuilder propertyBuilder = new StringBuilder();
+                if (value instanceof Integer) {
+                    propertyBuilder.append(String.format("%6d", value));
+                } else if (value instanceof Double) {
+                    propertyBuilder.append(String.format("%8.2f", value));
+                } else {
+                    propertyBuilder.append(value);
+                }
+
+                int length = Math.max(1, 20 - property.length());
+                sb.append(String.format(" %" + length + "s ", propertyBuilder.toString()));
+            }
+        }
+        OUT.println(sb.toString());
+    }
+
+    protected static void addASTSizeProperty(OptimizedCallTarget target, Map<String, Object> properties) {
+        int nodeCount = OptimizedCallUtils.countNonTrivialNodes(target, false);
+        int deepNodeCount = nodeCount;
+        TruffleInlining inlining = target.getInlining();
+        if (inlining != null) {
+            deepNodeCount += inlining.getInlinedNodeCount();
+        }
+        properties.put("ASTSize", String.format("%5d/%5d", nodeCount, deepNodeCount));
+
+    }
+
+}