在做了所有这些预备之后，下面就是这种图形遍历的标准实现：
public static IObjectProfileNode profile (Object obj)
{
final IdentityHashMap visited = new IdentityHashMap ();
final ObjectProfileNode root = createProfileTree (obj, visited,
CLASS_METADATA_CACHE);
finishProfileTree (root);
return root;
}
private static ObjectProfileNode createProfileTree (Object obj,
IdentityHashMap visited,
Map metadataMap)
{
final ObjectProfileNode root = new ObjectProfileNode (null, obj, null);
final LinkedList queue = new LinkedList ();
queue.addFirst (root);
visited.put (obj, root);
final ClassAccessPrivilegedAction caAction =
new ClassAccessPrivilegedAction ();
final FieldAccessPrivilegedAction faAction =
new FieldAccessPrivilegedAction ();
while (! queue.isEmpty ())
{
final ObjectProfileNode node = (ObjectProfileNode) queue.removeFirst ();
obj = node.m_obj;
final Class objClass = obj.getClass ();
if (objClass.isArray ())
{
final int arrayLength = Array.getLength (obj);
final Class componentType = objClass.getComponentType ();
// Add shell pseudo-node:
final AbstractShellProfileNode shell =
new ArrayShellProfileNode (node, objClass, arrayLength);
shell.m_size = sizeofArrayShell (arrayLength, componentType);
node.m_shell = shell;
node.addFieldRef (shell);
if (! componentType.isPrimitive ())
{
// Traverse each array slot:
for (int i = 0; i < arrayLength; ++ i)
{
final Object ref = Array.get (obj, i);
if (ref != null)
{
ObjectProfileNode child =
(ObjectProfileNode) visited.get (ref);
if (child != null)
++ child.m_refcount;
else
