# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1327067931 -3600
# Node ID 719ac1d92a5245fdc18d1a69c973d5818c6101dc
# Parent  249752adcb8d4ce7763754359180c424f3ae33ef
More work on debug framework.

diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/GraalCompiler.java
--- a/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/GraalCompiler.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/GraalCompiler.java	Fri Jan 20 14:58:51 2012 +0100
@@ -82,16 +82,24 @@
             throw new CiBailout("No OSR supported");
         }
         return Debug.scope("CompileMethod", method, new Callable<CiTargetMethod>() {
-                public CiTargetMethod call() {
-                        final CiAssumptions assumptions = GraalOptions.OptAssumptions ? new CiAssumptions() : null;
-                        LIR lir = Debug.scope("EmitHIR", graph, new Callable<LIR>() {
-                            public LIR call() {
-                                return emitHIR(graph, assumptions, plan);
-                            }
-                        });
-                        FrameMap frameMap = emitLIR(lir, graph, method);
+            public CiTargetMethod call() {
+                final CiAssumptions assumptions = GraalOptions.OptAssumptions ? new CiAssumptions() : null;
+                final LIR lir = Debug.scope("FrontEnd", graph, new Callable<LIR>() {
+                    public LIR call() {
+                        return emitHIR(graph, assumptions, plan);
+                    }
+                });
+                final FrameMap frameMap = Debug.scope("BackEnd", lir, new Callable<FrameMap>() {
+                    public FrameMap call() {
+                        return emitLIR(lir, graph, method);
+                    }
+                });
+                return Debug.scope("CodeGen", frameMap, new Callable<CiTargetMethod>() {
+                    public CiTargetMethod call() {
                         return emitCode(assumptions, method, lir, frameMap);
-                }
+                    }
+                });
+            }
         });
     }
 
@@ -208,34 +216,39 @@
         });
     }
 
-    public FrameMap emitLIR(LIR lir, StructuredGraph graph, RiResolvedMethod method) {
-                LIRGenerator lirGenerator = null;
-                FrameMap frameMap;
-                    frameMap = backend.newFrameMap(runtime.getRegisterConfig(method));
-
-                    lirGenerator = backend.newLIRGenerator(graph, frameMap, method, lir, xir);
+    public FrameMap emitLIR(final LIR lir, StructuredGraph graph, final RiResolvedMethod method) {
+        final FrameMap frameMap = backend.newFrameMap(runtime.getRegisterConfig(method));
+        final LIRGenerator lirGenerator = backend.newLIRGenerator(graph, frameMap, method, lir, xir);
 
-                    for (LIRBlock b : lir.linearScanOrder()) {
-                        lirGenerator.doBlock(b);
-                    }
+        Debug.scope("LIRGen", new Runnable() {
+            public void run() {
+                for (LIRBlock b : lir.linearScanOrder()) {
+                    lirGenerator.doBlock(b);
+                }
 
-                    for (LIRBlock b : lir.linearScanOrder()) {
-                        if (b.phis != null) {
-                            b.phis.fillInputs(lirGenerator);
-                        }
+                for (LIRBlock b : lir.linearScanOrder()) {
+                    if (b.phis != null) {
+                        b.phis.fillInputs(lirGenerator);
                     }
+                }
 
                 Debug.dump(lirGenerator, "After LIR generation");
                 if (GraalOptions.PrintLIR && !TTY.isSuppressed()) {
                     LIR.printLIR(lir.linearScanOrder());
                 }
+            }
+        });
 
+        Debug.scope("Allocator", new Runnable() {
+            public void run() {
                 if (GraalOptions.AllocSSA) {
                     new SpillAllAllocator(lir, frameMap).execute();
                 } else {
-                    new LinearScan(target, method, graph, lir, lirGenerator, frameMap).allocate();
+                    new LinearScan(target, method, lir, lirGenerator, frameMap).allocate();
                 }
-                return frameMap;
+            }
+        });
+        return frameMap;
     }
 
     private TargetMethodAssembler createAssembler(FrameMap frameMap, LIR lir) {
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/GraalOptions.java
--- a/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/GraalOptions.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/GraalOptions.java	Fri Jan 20 14:58:51 2012 +0100
@@ -82,9 +82,15 @@
     public static boolean PrintLIR                           = ____;
     public static boolean PrintCFGToFile                     = ____;
 
+    // Debug settings:
+    public static boolean Debug                              = true;
+    public static String Dump                                = null;
+    public static String Meter                               = null;
+    public static String Time                                = null;
+    public static String Log                                 = null;
+    public static String MethodFilter                        = null;
+
     // Ideal graph visualizer output settings
-    public static boolean Plot                               = ____;
-    public static boolean PlotVerbose                        = ____;
     public static boolean PlotOnError                        = ____;
     public static int     PlotLevel                          = 3;
     public static boolean PlotSnippets                       = ____;
@@ -95,8 +101,6 @@
     public static int     PrintIdealGraphPort                = 4444;
 
     // Other printing settings
-    public static boolean Meter                              = ____;
-    public static boolean Time                               = ____;
     public static boolean PrintQueue                         = ____;
     public static boolean PrintCompilation                   = ____;
     public static boolean PrintXirTemplates                  = ____;
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/alloc/LinearScan.java
--- a/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/alloc/LinearScan.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/alloc/LinearScan.java	Fri Jan 20 14:58:51 2012 +0100
@@ -120,7 +120,7 @@
     private final int firstVariableNumber;
 
 
-    public LinearScan(CiTarget target, RiResolvedMethod method, StructuredGraph graph, LIR ir, LIRGenerator gen, FrameMap frameMap) {
+    public LinearScan(CiTarget target, RiResolvedMethod method, LIR ir, LIRGenerator gen, FrameMap frameMap) {
         this.target = target;
         this.method = method;
         this.ir = ir;
@@ -1782,78 +1782,66 @@
         }
     }
 
-    private static final DebugTimer timerLifetimeAnalysis = Debug.timer("LifetimeAnalysis");
-    private static final DebugTimer timerLinearScan = Debug.timer("LinearScan");
-    private static final DebugTimer timerLinearScanResolution = Debug.timer("LinearScanResolution");
-    private static final DebugTimer timerDebugInfo = Debug.timer("DebugInfo");
-    private static final DebugTimer timerControlFlowOptimizations = Debug.timer("ControlFlowOptimizations");
-
     public void allocate() {
 
-        timerLifetimeAnalysis.start();
-        try {
-            numberInstructions();
-
-            printLir("Before register allocation", true);
+        Debug.scope("LifetimeAnalysis", new Runnable() {
 
-            computeLocalLiveSets();
-            computeGlobalLiveSets();
+            public void run() {
+                numberInstructions();
+                printLir("Before register allocation", true);
+                computeLocalLiveSets();
+                computeGlobalLiveSets();
+                buildIntervals();
+                sortIntervalsBeforeAllocation();
+            }
+        });
 
-            buildIntervals();
-            sortIntervalsBeforeAllocation();
-        } finally {
-            timerLifetimeAnalysis.stop();
-        }
+        Debug.scope("RegisterAllocation", new Runnable() {
 
-        timerLinearScan.start();
-        try {
-            printIntervals("Before register allocation");
-
-            allocateRegisters();
+            public void run() {
+                printIntervals("Before register allocation");
+                allocateRegisters();
+            }
+        });
 
-        } finally {
-            timerLinearScan.stop();
-        }
+        Debug.scope("ResolveDataFlow", new Runnable() {
+            public void run() {
+                resolveDataFlow();
+            }
+        });
 
-        timerLinearScanResolution.start();
-        try {
-            resolveDataFlow();
-        } finally {
-            timerLinearScanResolution.stop();
-        }
+        Debug.scope("DebugInfo", new Runnable() {
 
-        timerDebugInfo.start();
-        try {
-            frameMap.finish();
+            public void run() {
+                frameMap.finish();
 
-            printIntervals("After register allocation");
-            printLir("After register allocation", true);
+                printIntervals("After register allocation");
+                printLir("After register allocation", true);
 
-            sortIntervalsAfterAllocation();
+                sortIntervalsAfterAllocation();
 
-            if (GraalOptions.DetailedAsserts) {
-                verify();
-            }
+                if (GraalOptions.DetailedAsserts) {
+                    verify();
+                }
 
-            eliminateSpillMoves();
-            assignLocations();
+                eliminateSpillMoves();
+                assignLocations();
 
-            if (GraalOptions.DetailedAsserts) {
-                verifyIntervals();
+                if (GraalOptions.DetailedAsserts) {
+                    verifyIntervals();
+                }
             }
-        } finally {
-            timerDebugInfo.stop();
-        }
+        });
+
+        Debug.scope("ControlFlowOptimizations", new Runnable() {
 
-        timerControlFlowOptimizations.start();
-        try {
-            printLir("After register number assignment", true);
-            EdgeMoveOptimizer.optimize(ir.linearScanOrder());
-            ControlFlowOptimizer.optimize(ir);
-            printLir("After control flow optimization", false);
-        } finally {
-            timerControlFlowOptimizations.stop();
-        }
+            public void run() {
+                printLir("After register number assignment", true);
+                EdgeMoveOptimizer.optimize(ir.linearScanOrder());
+                ControlFlowOptimizer.optimize(ir);
+                printLir("After control flow optimization", false);
+            }
+        });
     }
 
     void printIntervals(String label) {
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/phases/Phase.java
--- a/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/phases/Phase.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/phases/Phase.java	Fri Jan 20 14:58:51 2012 +0100
@@ -27,10 +27,13 @@
 
 public abstract class Phase {
 
-    private final String name;
+    private String name;
 
     protected Phase() {
         this.name = this.getClass().getSimpleName();
+        if (name.endsWith("Phase")) {
+            name = name.substring(0, name.length() - "Phase".length());
+        }
     }
 
     protected Phase(String name) {
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/Debug.java
--- a/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/Debug.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/Debug.java	Fri Jan 20 14:58:51 2012 +0100
@@ -30,13 +30,15 @@
 
 
 public class Debug {
-    public static boolean SCOPE = false;
-    public static boolean LOG = false;
-    public static boolean METER = false;
-    public static boolean TIME = false;
+    private static boolean ENABLED = false;
+
+    public static void enable() {
+        ENABLED = true;
+        DebugScope.initialize();
+    }
 
     public static void sandbox(String name, Runnable runnable) {
-        if (SCOPE) {
+        if (ENABLED) {
             DebugScope.getInstance().scope(name, runnable, null, true, new Object[0]);
         } else {
             runnable.run();
@@ -52,15 +54,23 @@
     }
 
     public static void scope(String name, Object context, Runnable runnable) {
-        if (SCOPE) {
+        if (ENABLED) {
             DebugScope.getInstance().scope(name, runnable, null, false, new Object[]{context});
         } else {
             runnable.run();
         }
     }
 
+    public static String currentScope() {
+        if (ENABLED) {
+            return DebugScope.getInstance().getQualifiedName();
+        } else {
+            return "";
+        }
+    }
+
     public static <T> T scope(String name, Object context, Callable<T> callable) {
-        if (SCOPE) {
+        if (ENABLED) {
             return DebugScope.getInstance().scope(name, null, callable, false, new Object[]{context});
         } else {
             return DebugScope.call(callable);
@@ -68,19 +78,19 @@
     }
 
     public static void log(String msg, Object... args) {
-        if (LOG) {
+        if (ENABLED && DebugScope.getInstance().isLogEnabled()) {
             DebugScope.getInstance().log(msg, args);
         }
     }
 
     public static void dump(Object object, String msg, Object... args) {
-        if (LOG) {
-            DebugScope.getInstance().log(msg, args);
+        if (ENABLED && DebugScope.getInstance().isDumpEnabled()) {
+            DebugScope.getInstance().dump(object, msg, args);
         }
     }
 
     public static Iterable<Object> context() {
-        if (SCOPE) {
+        if (ENABLED) {
             return DebugScope.getInstance().getCurrentContext();
         } else {
             return Collections.emptyList();
@@ -88,22 +98,26 @@
     }
 
     public static DebugMetric metric(String name) {
-        if (METER) {
+        if (ENABLED && DebugScope.getInstance().isMeterEnabled()) {
             return new MetricImpl(name);
         } else {
             return VOID_METRIC;
         }
     }
 
+    public static void setConfig(DebugConfig config) {
+        if (ENABLED) {
+            DebugScope.getInstance().setConfig(config);
+        }
+    }
+
     private static final DebugMetric VOID_METRIC = new DebugMetric() {
-        @Override
         public void increment() { }
-        @Override
         public void add(int value) { }
     };
 
     public static DebugTimer timer(String name) {
-        if (TIME) {
+        if (ENABLED && DebugScope.getInstance().isTimerEnabled()) {
             return new TimerImpl(name);
         } else {
             return VOID_TIMER;
@@ -111,9 +125,7 @@
     }
 
     private static final DebugTimer VOID_TIMER = new DebugTimer() {
-        @Override
         public void start() { }
-        @Override
         public void stop() { }
     };
 }
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/DebugConfig.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/DebugConfig.java	Fri Jan 20 14:58:51 2012 +0100
@@ -0,0 +1,31 @@
+/*
+ * 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 DebugConfig {
+    boolean isLogEnabled();
+    boolean isMeterEnabled();
+    boolean isDumpEnabled();
+    boolean isTimerEnabled();
+}
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/DebugMetric.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/DebugMetric.java	Fri Jan 20 14:58:51 2012 +0100
@@ -0,0 +1,28 @@
+/*
+ * 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 DebugMetric {
+    void increment();
+    void add(int value);
+}
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/DebugTimer.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/DebugTimer.java	Fri Jan 20 14:58:51 2012 +0100
@@ -0,0 +1,28 @@
+/*
+ * 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 DebugTimer {
+    void start();
+    void stop();
+}
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugScope.java
--- a/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugScope.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugScope.java	Fri Jan 20 14:58:51 2012 +0100
@@ -22,84 +22,156 @@
  */
 package com.oracle.max.graal.debug.internal;
 
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
+import java.io.*;
+import java.util.*;
 import java.util.concurrent.*;
 
+import com.oracle.max.graal.debug.*;
+
 
 public final class DebugScope {
 
     private static ThreadLocal<DebugScope> instance = new ThreadLocal<>();
-    private final List<DebugScope> children = new ArrayList<>(4);
+    private static ThreadLocal<DebugConfig> config = new ThreadLocal<>();
+
     private final String name;
     private final DebugScope parent;
-    private final Object[] context;
-    private final DebugValueMap valueMap = new DebugValueMap();
+
+    private Object[] context;
+
+    private List<DebugScope> children;
+    private DebugValueMap valueMap;
+    private String qualifiedName;
 
-    public static final DebugScope DEFAULT_CONTEXT = new DebugScope("DEFAULT", null);
+    public static final DebugScope DEFAULT_CONTEXT = new DebugScope("DEFAULT", "DEFAULT", null);
+    private static final char SCOPE_SEP = '.';
+
+    private boolean logEnabled;
+    private boolean meterEnabled;
+    private boolean timerEnabled;
+    private boolean dumpEnabled;
 
     public static DebugScope getInstance() {
         DebugScope result = instance.get();
         if (result == null) {
-            return DEFAULT_CONTEXT;
+            instance.set(new DebugScope("DEFAULT", "DEFAULT", null));
+            return instance.get();
         } else {
             return result;
         }
     }
 
-    private DebugScope(String name, DebugScope parent, Object... context) {
+    public static DebugConfig getConfig() {
+        return config.get();
+    }
+
+    private DebugScope(String name, String qualifiedName, DebugScope parent, Object... context) {
         this.name = name;
         this.parent = parent;
         this.context = context;
+        this.qualifiedName = qualifiedName;
+    }
+
+    public boolean isDumpEnabled() {
+        return dumpEnabled;
+    }
+
+    public boolean isLogEnabled() {
+        return logEnabled;
+    }
+
+    public boolean isMeterEnabled() {
+        return meterEnabled;
+    }
+
+    public boolean isTimerEnabled() {
+        return timerEnabled;
     }
 
     public void log(String msg, Object... args) {
+        if (isLogEnabled()) {
+            cachedOut.println(String.format(msg, args));
+        }
+    }
+
+    public void dump(Object object, String msg, Object[] args) {
     }
 
     public <T> T scope(String newName, Runnable runnable, Callable<T> callable, boolean sandbox, Object[] newContext) {
         DebugScope oldContext = getInstance();
+        DebugConfig oldConfig = getConfig();
         DebugScope newChild = null;
         if (sandbox) {
-            newChild = new DebugScope(name, null, newContext);
+            newChild = new DebugScope(newName, newName, null, newContext);
+            setConfig(null);
         } else {
-            oldContext.createChild(newName, newContext);
+            newChild = oldContext.createChild(newName, newContext);
         }
         instance.set(newChild);
         T result = null;
+        updateFlags();
+        log("Starting scope %s", newChild.getQualifiedName());
         try {
             if (runnable != null) {
                 runnable.run();
             }
             if (callable != null) {
-                call(callable);
+                result = call(callable);
             }
         } catch (RuntimeException e) {
             throw interceptException(e);
         } finally {
+            newChild.deactivate();
             instance.set(oldContext);
+            setConfig(oldConfig);
         }
         return result;
     }
 
-    public DebugValueMap getValueMap() {
-        return valueMap;
+    private void updateFlags() {
+        DebugConfig config = getConfig();
+        if (config == null) {
+            logEnabled = false;
+            meterEnabled = false;
+            timerEnabled = false;
+            dumpEnabled = false;
+        } else {
+            logEnabled = config.isLogEnabled();
+            meterEnabled = config.isMeterEnabled();
+            timerEnabled = config.isTimerEnabled();
+            dumpEnabled = config.isDumpEnabled();
+        }
+    }
+
+    private void deactivate() {
+        context = null;
     }
 
     private RuntimeException interceptException(RuntimeException e) {
         return e;
     }
 
+    private DebugValueMap getValueMap() {
+        if (valueMap == null) {
+            valueMap = new DebugValueMap();
+        }
+        return valueMap;
+    }
+
     long getCurrentValue(int index) {
-        return valueMap.getCurrentValue(index);
+        return getValueMap().getCurrentValue(index);
     }
 
     void setCurrentValue(int index, long l) {
-        valueMap.setCurrentValue(index, l);
+        getValueMap().setCurrentValue(index, l);
     }
 
     private DebugScope createChild(String newName, Object[] newContext) {
-        DebugScope result = new DebugScope(newName, this, newContext);
+        String newQualifiedName = this.qualifiedName + SCOPE_SEP + newName;
+        DebugScope result = new DebugScope(newName, newQualifiedName, this, newContext);
+        if (children == null) {
+            children = new ArrayList<>(4);
+        }
         children.add(result);
         return result;
     }
@@ -156,5 +228,20 @@
             }
         }
     }
+
+    public void setConfig(DebugConfig newConfig) {
+        config.set(newConfig);
+        updateFlags();
+    }
+
+    public String getQualifiedName() {
+        return qualifiedName;
+    }
+
+    public static PrintStream cachedOut;
+
+    public static void initialize() {
+        cachedOut = System.out;
+    }
 }
 
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugValueMap.java
--- a/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugValueMap.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.debug/src/com/oracle/max/graal/debug/internal/DebugValueMap.java	Fri Jan 20 14:58:51 2012 +0100
@@ -39,7 +39,10 @@
     }
 
     private void ensureSize(int index) {
-        if (values == null || values.length <= index) {
+        if (values == null) {
+            values = new long[index + 1];
+        }
+        if (values.length <= index) {
             values = Arrays.copyOf(values, index + 1);
         }
     }
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/CompilerImpl.java
--- a/graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/CompilerImpl.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/CompilerImpl.java	Fri Jan 20 14:58:51 2012 +0100
@@ -30,14 +30,12 @@
 import com.oracle.max.cri.ri.*;
 import com.oracle.max.cri.xir.*;
 import com.oracle.max.graal.compiler.*;
-import com.oracle.max.graal.compiler.observer.*;
 import com.oracle.max.graal.compiler.target.*;
 import com.oracle.max.graal.cri.*;
 import com.oracle.max.graal.hotspot.bridge.*;
 import com.oracle.max.graal.hotspot.logging.*;
 import com.oracle.max.graal.hotspot.ri.*;
 import com.oracle.max.graal.hotspot.server.*;
-import com.oracle.max.graal.printer.*;
 
 /**
  * Singleton class holding the instance of the GraalCompiler.
@@ -218,16 +216,16 @@
             if (GraalOptions.PrintCFGToFile) {
 //                context.addCompilationObserver(new CFGPrinterObserver());
             }
-            if (GraalOptions.PrintIdealGraphLevel != 0 || GraalOptions.Plot || GraalOptions.PlotOnError) {
-                CompilationObserver observer;
-                if (GraalOptions.PrintIdealGraphFile) {
-                    observer = new IdealGraphPrinterObserver();
-                } else {
-                    observer = new IdealGraphPrinterObserver(GraalOptions.PrintIdealGraphAddress, GraalOptions.PrintIdealGraphPort);
-                }
+           // if (GraalOptions.PrintIdealGraphLevel != 0 || GraalOptions.Plot || GraalOptions.PlotOnError) {
+             //   CompilationObserver observer;
+               // if (GraalOptions.PrintIdealGraphFile) {
+              //      observer = new IdealGraphPrinterObserver();
+              //  } else {
+              //      observer = new IdealGraphPrinterObserver(GraalOptions.PrintIdealGraphAddress, GraalOptions.PrintIdealGraphPort);
+              //  }
 //                context.addCompilationObserver(observer);
                 // TODO(tw): Install observer.
-            }
+           // }
             runtime = new HotSpotRuntime(config, this);
         }
         return runtime;
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/HotSpotDebugConfig.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/HotSpotDebugConfig.java	Fri Jan 20 14:58:51 2012 +0100
@@ -0,0 +1,101 @@
+/*
+ * 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.hotspot;
+
+import com.oracle.max.cri.ri.*;
+import com.oracle.max.graal.debug.*;
+
+
+public class HotSpotDebugConfig implements DebugConfig {
+
+    public final String logFilter;
+    public final String meterFilter;
+    public final String timerFilter;
+    public final String dumpFilter;
+    public final String methodFilter;
+
+    public HotSpotDebugConfig(String logFilter, String meterFilter, String timerFilter, String dumpFilter, String methodFilter) {
+        this.logFilter = logFilter;
+        this.meterFilter = meterFilter;
+        this.timerFilter = timerFilter;
+        this.dumpFilter = dumpFilter;
+        this.methodFilter = methodFilter;
+    }
+
+    public boolean isLogEnabled() {
+        return isEnabled(logFilter);
+    }
+
+    public boolean isMeterEnabled() {
+        return isEnabled(meterFilter);
+    }
+
+    public boolean isDumpEnabled() {
+        return isEnabled(dumpFilter);
+    }
+
+    public boolean isTimerEnabled() {
+        return isEnabled(timerFilter);
+    }
+
+    private boolean isEnabled(String filter) {
+        return filter != null && Debug.currentScope().contains(filter) && checkMethodFilter();
+    }
+
+    private boolean checkMethodFilter() {
+        if (methodFilter == null) {
+            return true;
+        } else {
+            for (Object o : Debug.context()) {
+                if (o instanceof RiMethod) {
+                    RiMethod riMethod = (RiMethod) o;
+                    if (riMethod.toString().contains(methodFilter)) {
+                        return true;
+                    }
+                }
+            }
+            return false;
+        }
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("Debug config:");
+        add(sb, "Log", logFilter);
+        add(sb, "Meter", meterFilter);
+        add(sb, "Time", timerFilter);
+        add(sb, "Dump", dumpFilter);
+        add(sb, "MethodFilter", methodFilter);
+        return sb.toString();
+    }
+
+    private static void add(StringBuilder sb, String name, String filter) {
+        if (filter != null) {
+            sb.append(' ');
+            sb.append(name);
+            sb.append('=');
+            sb.append(filter);
+        }
+    }
+}
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/HotSpotOptions.java
--- a/graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/HotSpotOptions.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/HotSpotOptions.java	Fri Jan 20 14:58:51 2012 +0100
@@ -78,7 +78,11 @@
                         value = Boolean.parseBoolean(valueString);
                     }
                 } else if (f.getType() == String.class) {
-                    value = valueString;
+                    if (valueString == null) {
+                        value = "";
+                    } else {
+                        value = valueString;
+                    }
                 }
             }
             if (value != null) {
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/bridge/VMToCompilerImpl.java
--- a/graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/bridge/VMToCompilerImpl.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/bridge/VMToCompilerImpl.java	Fri Jan 20 14:58:51 2012 +0100
@@ -32,6 +32,7 @@
 import com.oracle.max.graal.compiler.*;
 import com.oracle.max.graal.compiler.phases.*;
 import com.oracle.max.graal.compiler.phases.PhasePlan.PhasePosition;
+import com.oracle.max.graal.debug.*;
 import com.oracle.max.graal.hotspot.*;
 import com.oracle.max.graal.hotspot.Compiler;
 import com.oracle.max.graal.hotspot.ri.*;
@@ -46,6 +47,7 @@
 
     private final Compiler compiler;
     private int compiledMethodCount;
+    private DebugConfig debugConfig;
 
     public final HotSpotTypePrimitive typeBoolean;
     public final HotSpotTypePrimitive typeChar;
@@ -57,18 +59,23 @@
     public final HotSpotTypePrimitive typeLong;
     public final HotSpotTypePrimitive typeVoid;
 
-    ThreadFactory daemonThreadFactory = new ThreadFactory() {
+    ThreadFactory compilerThreadFactory = new ThreadFactory() {
         @Override
         public Thread newThread(Runnable r) {
-            Thread t = new CompilerThread(r);
-            t.setDaemon(true);
-            return t;
+            return new CompilerThread(r);
         }
     };
-    private static final class CompilerThread extends Thread {
+    private final class CompilerThread extends Thread {
         public CompilerThread(Runnable r) {
             super(r);
-            this.setName("CompilerThread-" + this.getId());
+            this.setName("GraalCompilerThread-" + this.getId());
+            this.setDaemon(true);
+        }
+
+        @Override
+        public void run() {
+            Debug.setConfig(debugConfig);
+            super.run();
         }
     }
     private ThreadPoolExecutor compileQueue;
@@ -100,7 +107,7 @@
         }
 
         // Create compilation queue.
-        compileQueue = new ThreadPoolExecutor(GraalOptions.Threads, GraalOptions.Threads, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>(), daemonThreadFactory);
+        compileQueue = new ThreadPoolExecutor(GraalOptions.Threads, GraalOptions.Threads, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>(), compilerThreadFactory);
 
         // Create queue status printing thread.
         if (GraalOptions.PrintQueue) {
@@ -119,6 +126,13 @@
             t.setDaemon(true);
             t.start();
         }
+
+        if (GraalOptions.Debug) {
+            Debug.enable();
+            HotSpotDebugConfig hotspotDebugConfig = new HotSpotDebugConfig(GraalOptions.Log, GraalOptions.Meter, GraalOptions.Time, GraalOptions.Dump, GraalOptions.MethodFilter);
+            System.out.println(hotspotDebugConfig);
+            this.debugConfig = hotspotDebugConfig;
+        }
     }
 
     public void bootstrap() throws Throwable {
diff -r 249752adcb8d -r 719ac1d92a52 graal/com.oracle.max.graal.printer/src/com/oracle/max/graal/printer/IdealGraphPrinterObserver.java
--- a/graal/com.oracle.max.graal.printer/src/com/oracle/max/graal/printer/IdealGraphPrinterObserver.java	Wed Jan 18 13:54:40 2012 +0100
+++ b/graal/com.oracle.max.graal.printer/src/com/oracle/max/graal/printer/IdealGraphPrinterObserver.java	Fri Jan 20 14:58:51 2012 +0100
@@ -28,7 +28,6 @@
 
 import com.oracle.max.cri.ri.*;
 import com.oracle.max.criutils.*;
-import com.oracle.max.graal.compiler.*;
 import com.oracle.max.graal.compiler.observer.*;
 import com.oracle.max.graal.compiler.schedule.*;
 import com.oracle.max.graal.graph.*;
@@ -91,18 +90,16 @@
 
     private void openPrinter(RiResolvedMethod method, boolean error) {
         assert (context().stream == null && printer() == null);
-        if ((!TTY.isSuppressed() && GraalOptions.Plot) || (GraalOptions.PlotOnError && error)) {
-            String name;
-            if (method != null) {
-                name = method.holder().name();
-                name = name.substring(1, name.length() - 1).replace('/', '.');
-                name = name + "." + method.name();
-            } else {
-                name = "null";
-            }
+        String name;
+        if (method != null) {
+            name = method.holder().name();
+            name = name.substring(1, name.length() - 1).replace('/', '.');
+            name = name + "." + method.name();
+        } else {
+            name = "null";
+        }
 
-            openPrinter(name, method);
-        }
+        openPrinter(name, method);
     }
 
     private void openPrinter(String title, RiResolvedMethod method) {