Merge branch 'master' of git://github.com/mbien/gluegen into freebsd-fixes

5 files changed, 213 insertions, 147 deletions

diff --git a/src/java/com/jogamp/common/os/DynamicLibraryBundle.java b/src/java/com/jogamp/common/os/DynamicLibraryBundle.java
index 8e138ef..6c00afe 100755
--- a/src/java/com/jogamp/common/os/DynamicLibraryBundle.java
+++ b/src/java/com/jogamp/common/os/DynamicLibraryBundle.java
@@ -28,10 +28,8 @@
 package com.jogamp.common.os;
 
 import java.util.*;
-import java.security.*;
 
 import com.jogamp.common.jvm.JNILibLoaderBase;
-import com.jogamp.common.util.MiscUtils;
 
 /**
  * Provides bundling of:<br>
@@ -87,10 +85,10 @@ public class DynamicLibraryBundle implements DynamicLookupHelper {
         }
         if(DEBUG) {
             System.out.println("DynamicLibraryBundle.init Summary: "+info.getClass().getName());
-            System.out.println("     toolGetProcAddressFuncNameList: "+MiscUtils.toString(toolGetProcAddressFuncNameList));
-            System.out.println("     Tool Lib Names : "+MiscUtils.toString(toolLibNames));
+            System.out.println("     toolGetProcAddressFuncNameList: "+toolGetProcAddressFuncNameList);
+            System.out.println("     Tool Lib Names : "+toolLibNames);
             System.out.println("     Tool Lib Loaded: "+getToolLibLoadedNumber()+"/"+getToolLibNumber()+", complete "+isToolLibComplete());
-            System.out.println("     Glue Lib Names : "+MiscUtils.toString(glueLibNames));
+            System.out.println("     Glue Lib Names : "+glueLibNames);
             System.out.println("     Glue Lib Loaded: "+getGlueLibLoadedNumber()+"/"+getGlueLibNumber()+", complete "+isGlueLibComplete());
             System.out.println("     All Complete: "+isLibComplete());
         }
@@ -209,13 +207,13 @@ public class DynamicLibraryBundle implements DynamicLookupHelper {
                 libNames = new ArrayList();
                 libNames.add((String)listObj);
             } else {
-                throw new RuntimeException("List element "+i+" must be either a List or String: "+MiscUtils.toString(toolLibNames));
+                throw new RuntimeException("List element "+i+" must be either a List or String: "+toolLibNames);
             }
             if( null != libNames && libNames.size() > 0 ) {
                 lib = loadFirstAvailable(libNames, loader, info.shallLinkGlobal());
                 if ( null == lib ) {
                     if(DEBUG) {
-                        System.out.println("Unable to load any Tool library of: "+MiscUtils.toString(libNames));
+                        System.out.println("Unable to load any Tool library of: "+libNames);
                     }
                 } else {
                     nativeLibraries.add(lib);
@@ -283,7 +281,7 @@ public class DynamicLibraryBundle implements DynamicLookupHelper {
             if(0!=addr) {
                 System.err.println("Lookup-Native: <" + funcName + "> 0x" + Long.toHexString(addr) + " in lib " + libName );
             } else {
-                System.err.println("Lookup-Native: <" + funcName + "> ** FAILED ** in libs " + MiscUtils.toString(nativeLibraries));
+                System.err.println("Lookup-Native: <" + funcName + "> ** FAILED ** in libs " + nativeLibraries);
             }
         }
         return addr;
diff --git a/src/java/com/jogamp/common/os/Platform.java b/src/java/com/jogamp/common/os/Platform.java
index b6298a7..0d8b276 100644
--- a/src/java/com/jogamp/common/os/Platform.java
+++ b/src/java/com/jogamp/common/os/Platform.java
@@ -34,20 +34,21 @@ import com.jogamp.common.nio.Buffers;
 import java.nio.ByteBuffer;
 import java.nio.IntBuffer;
 import java.nio.ShortBuffer;
-import java.security.*;
 
 /**
  * Utility class for querying platform specific properties.
- * @author Michael Bien, Sven Gothel
+ * @author Michael Bien
+ * @author Sven Gothel
  */
 public class Platform {
 
     public static final boolean JAVA_SE;
     public static final boolean LITTLE_ENDIAN;
+    public static final String OS;
+    public static final String ARCH;
 
-    private final static boolean is32Bit;
-    private final static int pointerSizeInBits;
-    private final static String os, arch;
+    private static final boolean is32Bit;
+    private static final int pointerSizeInBits;
 
     static {
         NativeLibrary.ensureNativeLibLoaded();
@@ -55,17 +56,24 @@ public class Platform {
         // We don't seem to need an AccessController.doPrivileged() block
         // here as these system properties are visible even to unsigned
         // applets
-        os =  System.getProperty("os.name");
-        arch = System.getProperty("os.arch");
+        OS =  System.getProperty("os.name");
+        ARCH = System.getProperty("os.arch");
 
         pointerSizeInBits = getPointerSizeInBitsImpl();
+        is32Bit = initAch();
+        JAVA_SE = initIsJavaSE();
+        LITTLE_ENDIAN = initByteOrder();
+    }
+
+    private Platform() {}
 
-        // Try to use Sun's sun.arch.data.model first ..
+    private static boolean initAch() throws RuntimeException {
+        // Try to use Sun's sun.ARCH.data.model first ..
         if ( 32 == pointerSizeInBits || 64 == pointerSizeInBits ) {
-            is32Bit = ( 32 == pointerSizeInBits );
+            return 32 == pointerSizeInBits;
         }else {
-            String os_lc = os.toLowerCase();
-            String arch_lc = arch.toLowerCase();
+            String os_lc = OS.toLowerCase();
+            String arch_lc = ARCH.toLowerCase();
 
             if ((os_lc.startsWith("windows") && arch_lc.equals("x86")) ||
                 (os_lc.startsWith("windows") && arch_lc.equals("arm")) ||
@@ -79,7 +87,7 @@ public class Platform {
                 (os_lc.startsWith("sunos_lc") && arch_lc.equals("x86")) ||
                 (os_lc.startsWith("freebsd") && arch_lc.equals("i386")) ||
                 (os_lc.startsWith("hp-ux") && arch_lc.equals("pa_risc2.0"))) {
-              is32Bit = true;
+                return true;
             } else if ((os_lc.startsWith("windows") && arch_lc.equals("amd64")) ||
                       (os_lc.startsWith("linux") && arch_lc.equals("amd64")) ||
                       (os_lc.startsWith("linux") && arch_lc.equals("x86_64")) ||
@@ -88,44 +96,41 @@ public class Platform {
                       (os_lc.startsWith("darwin") && arch_lc.equals("x86_64")) ||
                       (os_lc.startsWith("sunos_lc") && arch_lc.equals("sparcv9")) ||
                       (os_lc.startsWith("sunos_lc") && arch_lc.equals("amd64"))) {
-              is32Bit = false;
+                return false;
             }else{
               throw new RuntimeException("Please port CPU detection (32/64 bit) to your platform (" + os_lc + "/" + arch_lc + ")");
             }
         }
+    }
+
+    private static boolean initIsJavaSE() {
+
+        // fast path for desktop
+        if(System.getSecurityManager() == null && System.getProperty("java.runtime.name").indexOf("Java SE") != -1) {
+            return true;
+        }
 
-        boolean se;
+        // probe for classes we need on a SE environment
         try{
             Class.forName("java.nio.LongBuffer");
             Class.forName("java.nio.DoubleBuffer");
-            se = true;
+            return true;
         }catch(ClassNotFoundException ex) {
-            se = false;
+            return false;
         }
+    }
 
-        if(!se) {
-            // no more the fast path, due to access controller ..
-            String java_runtime_name = (String) AccessController.doPrivileged(new PrivilegedAction() {
-                public Object run() {
-                  return System.getProperty("java.runtime.name");
-                }
-              });
-            se = java_runtime_name.indexOf("Java SE") != -1;
-        }
-        JAVA_SE = se;
-
-        // byte order
+    private static boolean initByteOrder() {
         ByteBuffer tst_b = Buffers.newDirectByteBuffer(Buffers.SIZEOF_INT); // 32bit in native order
         IntBuffer tst_i = tst_b.asIntBuffer();
         ShortBuffer tst_s = tst_b.asShortBuffer();
         tst_i.put(0, 0x0A0B0C0D);
-        LITTLE_ENDIAN = 0x0C0D == tst_s.get(0);
+        return 0x0C0D == tst_s.get(0);
     }
 
-    private Platform() {}
-
     private static native int getPointerSizeInBitsImpl();
 
+    
     /**
      * Returns true only if this program is running on the Java Standard Edition.
      */
@@ -144,14 +149,14 @@ public class Platform {
      * Returns the OS name.
      */
     public static String getOS() {
-        return os;
+        return OS;
     }
 
     /**
      * Returns the CPU architecture String.
      */
     public static String getArch() {
-        return arch;
+        return ARCH;
     }
 
     /**
@@ -165,6 +170,9 @@ public class Platform {
         return pointerSizeInBits;
     }
 
-}
+    public static int getPointerSizeInBytes() {
+        return pointerSizeInBits/8;
+    }
 
+}
 
diff --git a/src/java/com/jogamp/common/util/MiscUtils.java b/src/java/com/jogamp/common/util/MiscUtils.java
deleted file mode 100644
index dd32951..0000000
--- a/src/java/com/jogamp/common/util/MiscUtils.java
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2010, Sven Gothel
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * Neither the name of Sven Gothel nor the
- *       names of its contributors may be used to endorse or promote products
- *       derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL Sven Gothel BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-package com.jogamp.common.util;
-
-import java.util.*;
-
-public class MiscUtils {
-
-    public static StringBuffer append(StringBuffer sb, List list) {
-        sb.append("[");
-        if(null!=list&&list.size()>0) {
-            boolean comma = false;
-            for(Iterator iter=list.iterator(); iter.hasNext(); ) {
-                if(comma) { sb.append(", "); }
-                Object o = iter.next();
-                if(o instanceof List) {
-                    sb = append(sb, (List)o);
-                } else {
-                    sb.append(o);
-                }
-                comma = true;
-            }
-        }
-        sb.append("]");
-        return sb;
-    }
-
-    public static String toString(List list) {
-        return append(new StringBuffer(), list).toString();
-    }
-}
-
diff --git a/src/java/com/jogamp/common/util/ReflectionUtil.java b/src/java/com/jogamp/common/util/ReflectionUtil.java
index b9c6ef0..fc4352f 100644
--- a/src/java/com/jogamp/common/util/ReflectionUtil.java
+++ b/src/java/com/jogamp/common/util/ReflectionUtil.java
@@ -47,9 +47,9 @@ public final class ReflectionUtil {
     /**
      * Returns true only if the class could be loaded.
      */
-    public static final boolean isClassAvailable(String clazzName) {
+    public static final boolean isClassAvailable(String clazzName, ClassLoader cl) {
         try {
-            return null != Class.forName(clazzName, false, ReflectionUtil.class.getClassLoader());
+            return null != Class.forName(clazzName, false, cl);
         } catch (ClassNotFoundException e) {
             return false;
         }
@@ -59,26 +59,26 @@ public final class ReflectionUtil {
      * Loads and returns the class or null.
      * @see Class#forName(java.lang.String, boolean, java.lang.ClassLoader)
      */
-    public static final Class getClass(String clazzName, boolean initialize)
+    public static final Class getClass(String clazzName, boolean initialize, ClassLoader cl)
         throws JogampRuntimeException {
         try {
-            return getClassImpl(clazzName, initialize);
+            return getClassImpl(clazzName, initialize, cl);
         } catch (ClassNotFoundException e) {
             throw new JogampRuntimeException(clazzName + " not available", e);
         }
     }
 
-    private static Class getClassImpl(String clazzName, boolean initialize) throws ClassNotFoundException {
-        return Class.forName(clazzName, initialize, ReflectionUtil.class.getClassLoader());
+    private static Class getClassImpl(String clazzName, boolean initialize, ClassLoader cl) throws ClassNotFoundException {
+        return Class.forName(clazzName, initialize, cl);
     }
 
     /**
      * @throws JogampRuntimeException if the constructor can not be delivered.
      */
-    public static final Constructor getConstructor(String clazzName, Class[] cstrArgTypes)
+    public static final Constructor getConstructor(String clazzName, ClassLoader cl, Class[] cstrArgTypes)
         throws JogampRuntimeException {
         try {
-            return getConstructor(getClassImpl(clazzName, true), cstrArgTypes);
+            return getConstructor(getClassImpl(clazzName, true, cl), cstrArgTypes);
         } catch (ClassNotFoundException ex) {
             throw new JogampRuntimeException(clazzName + " not available", ex);
         }
@@ -109,9 +109,9 @@ public final class ReflectionUtil {
         }
     }
 
-  public static final Constructor getConstructor(String clazzName)
+  public static final Constructor getConstructor(String clazzName, ClassLoader cl)
         throws JogampRuntimeException {
-    return getConstructor(clazzName, new Class[0]);
+    return getConstructor(clazzName, cl, new Class[0]);
   }
 
   /**
@@ -147,30 +147,30 @@ public final class ReflectionUtil {
     return createInstance(clazz, cstrArgTypes, cstrArgs);
   }
 
-  public static final Object createInstance(String clazzName, Class[] cstrArgTypes, Object[] cstrArgs) 
+  public static final Object createInstance(String clazzName, ClassLoader cl, Class[] cstrArgTypes, Object[] cstrArgs) 
       throws JogampRuntimeException, RuntimeException
   {
     try {
-        return createInstance(getClassImpl(clazzName, true), cstrArgTypes, cstrArgs);
+        return createInstance(getClassImpl(clazzName, true, cl), cstrArgTypes, cstrArgs);
     } catch (ClassNotFoundException ex) {
         throw new JogampRuntimeException(clazzName + " not available", ex);
     }
   }
 
-  public static final Object createInstance(String clazzName, Object[] cstrArgs) 
+  public static final Object createInstance(String clazzName, ClassLoader cl, Object[] cstrArgs) 
       throws JogampRuntimeException, RuntimeException
   {
     Class[] cstrArgTypes = new Class[cstrArgs.length];
     for(int i=0; i<cstrArgs.length; i++) {
         cstrArgTypes[i] = cstrArgs[i].getClass();
     }
-    return createInstance(clazzName, cstrArgTypes, cstrArgs);
+    return createInstance(clazzName, cl, cstrArgTypes, cstrArgs);
   }
 
-  public static final Object createInstance(String clazzName) 
+  public static final Object createInstance(String clazzName, ClassLoader cl)
       throws JogampRuntimeException, RuntimeException
   {
-    return createInstance(clazzName, new Class[0], null);
+    return createInstance(clazzName, cl, new Class[0], null);
   }
 
   public static final boolean instanceOf(Object obj, String clazzName) {
@@ -214,12 +214,12 @@ public final class ReflectionUtil {
   /**
    * @throws JogampRuntimeException if the instance can not be created.
    */
-  public static final Object callStaticMethod(String clazzName, String methodName, Class[] argTypes, Object[] args) 
+  public static final Object callStaticMethod(String clazzName, ClassLoader cl, String methodName, Class[] argTypes, Object[] args)
       throws JogampRuntimeException, RuntimeException
   {
     Class clazz;
     try {
-        clazz = getClassImpl(clazzName, true);
+        clazz = getClassImpl(clazzName, true, cl);
     } catch (ClassNotFoundException ex) {
         throw new JogampRuntimeException(clazzName + " not available", ex);
     }
diff --git a/src/java/com/jogamp/gluegen/runtime/ProcAddressTable.java b/src/java/com/jogamp/gluegen/runtime/ProcAddressTable.java
index f0be20f..6a73c0a 100644
--- a/src/java/com/jogamp/gluegen/runtime/ProcAddressTable.java
+++ b/src/java/com/jogamp/gluegen/runtime/ProcAddressTable.java
@@ -44,12 +44,35 @@ import java.io.PrintStream;
 import java.lang.reflect.Field;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
+import java.util.Iterator;
+import java.util.LinkedHashSet;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.SortedMap;
+import java.util.TreeMap;
 
 /**
  * Superclass for all generated ProcAddressTables.
+ *
+ * A ProcAddressTable is a cache of pointers to the dynamically-linkable C
+ * functions this autogenerated Java binding has exposed. Some
+ * libraries such as OpenGL, OpenAL and others define function pointer
+ * signatures rather than statically linkable entry points for the
+ * purposes of being able to query at run-time whether a particular
+ * extension is available. This table acts as a cache of these
+ * function pointers. Each function pointer is typically looked up at
+ * run-time by a platform-dependent mechanism such as dlsym(),
+ * wgl/glXGetProcAddress(), or alGetProcAddress(). If the field containing the function
+ * pointer is 0, the function is considered to be unavailable and can
+ * not be called.
+ *
  * @author Kenneth Russel
  * @author Michael Bien
  * @author Sven Gothel
+ *
+ * @see FunctionAddressResolver
+ * @see DynamicLookupHelper
  */
 public abstract class ProcAddressTable {
 
@@ -82,50 +105,31 @@ public abstract class ProcAddressTable {
         this.resolver = resolver;
     }
 
+
     /**
-     * Returns the address for the given function name.
-     * @throws RuntimeException if the Table has not been initialized yet.
+     * Resets the complete table.
      */
-    public abstract long getAddressFor(String functionName);
-
-
     public void reset(DynamicLookupHelper lookup) throws RuntimeException {
+
         if(null==lookup) {
             throw new RuntimeException("Passed null DynamicLookupHelper");
         }
 
-        Class tableClass = getClass();
-        Field[] fields = tableClass.getFields();
         PrintStream dout = getDebugOutStream();
 
         if (DEBUG) {
-            dout.println("ProcAddressTable.reset(" + getClass().getName() + ")");
+            dout.println(getClass().getName()+".reset()");
         }
-        for (int i = 0; i < fields.length; ++i) {
-            String addressFieldName = fields[i].getName();
-            if (!addressFieldName.startsWith(PROCADDRESS_VAR_PREFIX)) {
-                // not a proc address variable
-                continue;
-            }
-            int startOfMethodName = PROCADDRESS_VAR_PREFIX.length();
-            String funcName = addressFieldName.substring(startOfMethodName);
-            try {
-                Field addressField = fields[i];
-                assert (addressField.getType() == Long.TYPE);
-
-                long newProcAddress = resolver.resolve(funcName, lookup);
 
-                // set the current value of the proc address variable in the table object
-                addressField.setLong(this, newProcAddress);
-                if (DEBUG) {
-                    dout.println("  " + addressField.getName() + " -> 0x" + Long.toHexString(newProcAddress));
-                }
-            } catch (Exception e) {
-                throw new RuntimeException("Can not get proc address for method \""
-                        + funcName + "\": Couldn't set value of field \"" + addressFieldName
-                        + "\" in class " + tableClass.getName(), e);
+        Field[] fields = getClass().getFields();
+        for (int i = 0; i < fields.length; ++i) {
+            String fieldName = fields[i].getName();
+            if (isAddressField(fieldName)) {
+                String funcName = fieldToFunctionName(fieldName);
+                setEntry(fields[i], funcName, lookup);
             }
         }
+
         if (DEBUG) {
             dout.flush();
             if (DEBUG_PREFIX != null) {
@@ -134,6 +138,46 @@ public abstract class ProcAddressTable {
         }
     }
 
+    /**
+     * Initializes the mapping for a single function.
+     * @throws IllegalArgumentException if this function is not in this table.
+     */
+    public void initEntry(String name, DynamicLookupHelper lookup) {
+        Field field = fieldForFunction(name);
+        setEntry(field, name, lookup);
+    }
+
+    protected void setEntry(Field addressField, String funcName, DynamicLookupHelper lookup) {
+        try {
+            assert (addressField.getType() == Long.TYPE);
+            long newProcAddress = resolver.resolve(funcName, lookup);
+            // set the current value of the proc address variable in the table object
+            addressField.setLong(this, newProcAddress);
+            if (DEBUG) {
+                getDebugOutStream().println("  " + addressField.getName() + " -> 0x" + Long.toHexString(newProcAddress));
+            }
+        } catch (Exception e) {
+            throw new RuntimeException("Can not get proc address for method \""
+                    + funcName + "\": Couldn't set value of field \"" + addressField, e);
+        }
+    }
+
+    protected String fieldToFunctionName(String addressFieldName) {
+        return addressFieldName.substring(PROCADDRESS_VAR_PREFIX.length());
+    }
+
+    protected Field fieldForFunction(String name) {
+        try {
+            return getClass().getField(PROCADDRESS_VAR_PREFIX + name);
+        } catch (NoSuchFieldException ex) {
+            throw new IllegalArgumentException(getClass().getName() +" has no entry for the function '"+name+"'.", ex);
+        }
+    }
+
+    protected boolean isAddressField(String fieldName) {
+        return fieldName.startsWith(PROCADDRESS_VAR_PREFIX);
+    }
+
     protected static PrintStream getDebugOutStream() {
         PrintStream out = null;
         if (DEBUG) {
@@ -152,6 +196,79 @@ public abstract class ProcAddressTable {
         return out;
     }
 
+    /**
+     * Returns this table as map with the function name as key and the address as value.
+     */
+    public Map/*<String, Long>*/ toMap() {
+        
+        SortedMap map = new TreeMap();
+
+        Field[] fields = getClass().getFields();
+        try {
+            for (int i = 0; i < fields.length; ++i) {
+                String addressFieldName = fields[i].getName();
+                if (isAddressField(addressFieldName)) {
+                    map.put(fieldToFunctionName(addressFieldName), fields[i].get(this));
+                }
+            }
+        } catch (IllegalArgumentException ex) {
+            throw new RuntimeException(ex);
+        } catch (IllegalAccessException ex) {
+            throw new RuntimeException(ex);
+        }
+        
+        return map;
+    }
+
+    /**
+     * Returns true only if non null function pointer to this function exists.
+     */
+    public boolean isFunctionAvailable(String functionName) {
+        try{
+            return getAddressFor(functionName) != 0;
+        }catch (IllegalArgumentException ex) {
+            return false;
+        }
+    }
+
+    /**
+     * This is a convenience method to get (by name) the native function
+     * pointer for a given function. It lets you avoid having to
+     * manually compute the &quot;{@link #PROCADDRESS_VAR_PREFIX} + &lt;functionName&gt;&quot;
+     * member variable name and look it up via reflection.
+     *
+     * @throws IllegalArgumentException if this function is not in this table.
+     */
+    public long getAddressFor(String functionName) {
+        Field addressField = fieldForFunction(functionName);
+        try {
+            return addressField.getLong(this);
+        } catch (IllegalAccessException ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+    
+    /**
+     * Returns all functions pointing to null.
+     */
+    public Set/*<String>*/ getNullPointerFunctions() {
+        Map table = toMap();
+        Set nullPointers = new LinkedHashSet();
+        for (Iterator it = table.entrySet().iterator(); it.hasNext();) {
+            Map.Entry entry = (Entry) it.next();
+            long address = ((Long)entry.getValue()).longValue();
+            if(address == 0) {
+                nullPointers.add(entry.getKey());
+            }
+        }
+        return nullPointers;
+    }
+
+//    @Override
+    public String toString() {
+        return getClass().getName()+""+toMap();
+    }
+
 
     private static class One2OneResolver implements FunctionAddressResolver {
         public long resolve(String name, DynamicLookupHelper lookup) {