--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/Runtime/src/com/sun/hotspot/c1x/logging/Logger.java	Fri Apr 22 15:08:53 2011 +0200
@@ -0,0 +1,170 @@
+/*
+ * Copyright (c) 2010 Sun Microsystems, Inc.  All rights reserved.
+ *
+ * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
+ * that is described in this document. In particular, and without limitation, these intellectual property
+ * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
+ * more additional patents or pending patent applications in the U.S. and in other countries.
+ *
+ * U.S. Government Rights - Commercial software. Government users are subject to the Sun
+ * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
+ * supplements.
+ *
+ * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
+ * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
+ * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
+ * U.S. and other countries.
+ *
+ * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
+ * Company, Ltd.
+ */
+package com.sun.hotspot.c1x.logging;
+
+import java.io.*;
+import java.lang.reflect.*;
+import java.util.*;
+
+/**
+ * Scoped logging class used to display the call hierarchy of VMEntries/VMExits calls.
+ *
+ * @author Lukas Stadler
+ */
+public class Logger {
+
+    public static final boolean ENABLED = Boolean.valueOf(System.getProperty("c1x.debug"));
+    private static final int SPACING = 4;
+    private static Deque<Boolean> openStack = new LinkedList<Boolean>();
+    private static boolean open = false;
+    private static int level = 0;
+
+    private static final PrintStream out;
+
+    static {
+        PrintStream ps = null;
+        String filename = System.getProperty("c1x.info_file");
+        if (filename != null && !"".equals(filename)) {
+            try {
+                ps = new PrintStream(new FileOutputStream(filename));
+            } catch (FileNotFoundException e) {
+                e.printStackTrace();
+                ps = null;
+            }
+        }
+        out = ps;
+        if (out != null) {
+            out.println("start: " + new Date());
+        }
+    }
+
+    public static void info(String message) {
+        if (ENABLED) {
+            log(message);
+        } else {
+            System.out.println(message);
+        }
+        if (out != null) {
+            out.println(message);
+            out.flush();
+        }
+    }
+
+    public static void log(String message) {
+        if (ENABLED) {
+            for (String line : message.split("\n")) {
+                if (open) {
+                    System.out.println("...");
+                    open = false;
+                }
+                System.out.print(space(level));
+                System.out.println(line);
+            }
+        }
+    }
+
+    public static void startScope(String message) {
+        if (ENABLED) {
+            if (open) {
+                System.out.println("...");
+                open = false;
+            }
+            System.out.print(space(level));
+            System.out.print(message);
+            openStack.push(open);
+            open = true;
+            level++;
+        }
+    }
+
+    public static void endScope(String message) {
+        if (ENABLED) {
+            level--;
+            if (open) {
+                System.out.println(message);
+            } else {
+                System.out.println(space(level) + "..." + message);
+            }
+            open = openStack.pop();
+        }
+    }
+
+    private static String[] spaces = new String[50];
+
+    private static String space(int count) {
+        assert count >= 0;
+        String result;
+        if (count >= spaces.length || spaces[count] == null) {
+            StringBuilder str = new StringBuilder();
+            for (int i = 0; i < count * SPACING; i++) {
+                str.append(' ');
+            }
+            result = str.toString();
+            if (count < spaces.length) {
+                spaces[count] = result;
+            }
+        } else {
+            result = spaces[count];
+        }
+        return result;
+    }
+
+    public static String pretty(Object value) {
+        if (value == null) {
+            return "null";
+        }
+
+        Class<?> klass = value.getClass();
+        if (value instanceof Void) {
+            return "void";
+        } else if (value instanceof String) {
+            return "\"" + value + "\"";
+        } else if (value instanceof Method) {
+            return "method \"" + ((Method) value).getName() + "\"";
+        } else if (value instanceof Class<?>) {
+            return "class \"" + ((Class<?>) value).getSimpleName() + "\"";
+        } else if (value instanceof Integer) {
+            if ((Integer) value < 10) {
+                return value.toString();
+            }
+            return value + " (0x" + Integer.toHexString((Integer) value) + ")";
+        } else if (value instanceof Long) {
+            if ((Long) value < 10) {
+                return value + "l";
+            }
+            return value + "l (0x" + Long.toHexString((Long) value) + "l)";
+        } else if (klass.isArray()) {
+            StringBuilder str = new StringBuilder();
+            int dimensions = 0;
+            while (klass.isArray()) {
+                dimensions++;
+                klass = klass.getComponentType();
+            }
+            str.append(klass.getSimpleName()).append('[').append(Array.getLength(value)).append(']');
+            for (int i = 1; i < dimensions; i++) {
+                str.append("[]");
+            }
+            return str.toString();
+        }
+
+        return value.toString();
+    }
+}