--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/utilities/LivenessPathElement.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2001 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.utilities;
+
+import sun.jvm.hotspot.oops.*;
+
+/** Describes an element in a {@link
+    sun.jvm.hotspot.utilities.LivenessPath}. It indicates that the
+    field in the given object leads to the next element in the
+    path. Root elements do not have an object; the terminal element in
+    the path does not have a field identifier. */
+
+public class LivenessPathElement {
+  LivenessPathElement(Oop obj, FieldIdentifier id) {
+    this.obj = obj;
+    this.id  = id;
+  }
+
+  public boolean isRoot() {
+    return (obj == null);
+  }
+
+  public boolean isTerminal() {
+    return (id == null);
+  }
+
+  public Oop getObj() {
+    return obj;
+  }
+
+  public FieldIdentifier getField() {
+    return id;
+  }
+
+  //---------------------------------------------------------------------------
+  // Internals only below this point
+  //
+  private Oop             obj;
+  private FieldIdentifier id;
+}