--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.printer/src/com/oracle/graal/printer/BinaryGraphPrinterDumpHandler.java	Mon Jul 09 14:15:55 2012 +0200
@@ -0,0 +1,192 @@
+/*
+ * 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.oracle.graal.printer;
+
+import java.io.*;
+import java.net.*;
+import java.nio.channels.*;
+import java.util.*;
+
+import com.oracle.max.criutils.*;
+import com.oracle.graal.api.meta.*;
+import com.oracle.graal.debug.*;
+import com.oracle.graal.graph.*;
+
+/**
+ * Observes compilation events and uses {@link IdealGraphPrinter} to generate a graph representation that can be
+ * inspected with the <a href="http://kenai.com/projects/igv">Ideal Graph Visualizer</a>.
+ */
+public class BinaryGraphPrinterDumpHandler implements DebugDumpHandler {
+
+    private static final String DEFAULT_FILE_NAME = "output.gvb";
+
+    private BinaryGraphPrinter printer;
+    private List<String> previousInlineContext = new ArrayList<>();
+    private String fileName;
+    private String host;
+    private int port;
+    private int failuresCount;
+
+    /**
+     * Creates a new {@link BinaryGraphPrinterDumpHandler} that writes output to a file named after the compiled method.
+     */
+    public BinaryGraphPrinterDumpHandler() {
+        this.fileName = DEFAULT_FILE_NAME;
+    }
+
+    /**
+     * Creates a new {@link BinaryGraphPrinterDumpHandler} that sends output to a remote IdealGraphVisualizer instance.
+     */
+    public BinaryGraphPrinterDumpHandler(String host, int port) {
+        this.host = host;
+        this.port = port;
+    }
+
+    private void ensureInitialized() {
+        if (printer == null) {
+            if (failuresCount > 8) {
+                return;
+            }
+            previousInlineContext.clear();
+            if (fileName != null) {
+                initializeFilePrinter();
+            } else {
+                initializeNetworkPrinter();
+            }
+        }
+    }
+
+    private void initializeFilePrinter() {
+        try {
+            printer = new BinaryGraphPrinter(FileChannel.open(new File(fileName).toPath()));
+        } catch (IOException e) {
+            failuresCount++;
+            printer = null;
+        }
+    }
+
+    private void initializeNetworkPrinter() {
+        try {
+            SocketChannel channel = SocketChannel.open(new InetSocketAddress(host, port));
+            printer = new BinaryGraphPrinter(channel);
+            TTY.println("Connected to the IGV on port %d", port);
+        } catch (IOException e) {
+            TTY.println("Could not connect to the IGV on port %d: %s", port, e);
+            failuresCount++;
+            printer = null;
+        }
+    }
+
+    @Override
+    public void dump(Object object, final String message) {
+        if (object instanceof Graph) {
+            ensureInitialized();
+            if (printer == null) {
+                return;
+            }
+            final Graph graph = (Graph) object;
+
+            if (printer != null) {
+                // Get all current RiResolvedMethod instances in the context.
+                List<String> inlineContext = getInlineContext();
+
+                // Reverse list such that inner method comes after outer method.
+                Collections.reverse(inlineContext);
+
+                // Check for method scopes that must be closed since the previous dump.
+                for (int i = 0; i < previousInlineContext.size(); ++i) {
+                    if (i >= inlineContext.size() || !inlineContext.get(i).equals(previousInlineContext.get(i))) {
+                        for (int j = previousInlineContext.size() - 1; j >= i; --j) {
+                            closeScope();
+                        }
+                        break;
+                    }
+                }
+
+                // Check for method scopes that must be opened since the previous dump.
+                for (int i = 0; i < inlineContext.size(); ++i) {
+                    if (i >= previousInlineContext.size() || !inlineContext.get(i).equals(previousInlineContext.get(i))) {
+                        for (int j = i; j < inlineContext.size(); ++j) {
+                            openScope(inlineContext.get(j), j == 0);
+                        }
+                        break;
+                    }
+                }
+
+                // Save inline context for next dump.
+                previousInlineContext = inlineContext;
+
+                Debug.sandbox("PrintingGraph", new Runnable() {
+
+                    @Override
+                    public void run() {
+                        // Finally, output the graph.
+                        try {
+                            printer.print(graph, message, null);
+                        } catch (IOException e) {
+                            failuresCount++;
+                            printer = null;
+                        }
+                    }
+                });
+            }
+        }
+    }
+
+    private static List<String> getInlineContext() {
+        List<String> result = new ArrayList<>();
+        for (Object o : Debug.context()) {
+            if (o instanceof ResolvedJavaMethod) {
+                ResolvedJavaMethod method = (ResolvedJavaMethod) o;
+                result.add(MetaUtil.format("%H::%n(%p)", method));
+            } else if (o instanceof DebugDumpScope) {
+                DebugDumpScope debugDumpScope = (DebugDumpScope) o;
+                if (debugDumpScope.decorator && !result.isEmpty()) {
+                    result.set(result.size() - 1, debugDumpScope.name + ":" + result.get(result.size() - 1));
+                } else {
+                    result.add(debugDumpScope.name);
+                }
+            }
+        }
+        return result;
+    }
+
+    private void openScope(String name, boolean showThread) {
+        String prefix = showThread ? Thread.currentThread().getName() + ":" : "";
+        try {
+            printer.beginGroup(prefix + name, name, Debug.contextLookup(ResolvedJavaMethod.class), -1);
+        } catch (IOException e) {
+            failuresCount++;
+            printer = null;
+        }
+    }
+
+    private void closeScope() {
+        try {
+            printer.endGroup();
+        } catch (IOException e) {
+            failuresCount++;
+            printer = null;
+        }
+    }
+}