--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/jdi/ThreadGroupReferenceImpl.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2002-2003 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.jdi;
+
+import sun.jvm.hotspot.oops.Oop;
+import sun.jvm.hotspot.oops.Instance;
+import sun.jvm.hotspot.oops.OopUtilities;
+import sun.jvm.hotspot.runtime.JavaThread;
+import com.sun.jdi.*;
+import java.util.*;
+
+public class ThreadGroupReferenceImpl extends ObjectReferenceImpl
+    implements ThreadGroupReference
+{
+    ThreadGroupReferenceImpl(VirtualMachine aVm, sun.jvm.hotspot.oops.Oop oRef) {
+        super(aVm, oRef);
+    }
+
+    protected String description() {
+        return "ThreadGroupReference " + uniqueID();
+    }
+
+    public String name() {
+        return OopUtilities.threadGroupOopGetName(ref());
+    }
+
+    public ThreadGroupReference parent() {
+        return (ThreadGroupReferenceImpl)vm.threadGroupMirror(
+               (Instance)OopUtilities.threadGroupOopGetParent(ref()));
+    }
+
+    public void suspend() {
+        vm.throwNotReadOnlyException("ThreadGroupReference.suspend()");
+    }
+
+    public void resume() {
+        vm.throwNotReadOnlyException("ThreadGroupReference.resume()");
+    }
+
+    public List threads() {
+        // Each element of this array is the Oop for a thread;
+        // NOTE it is not the JavaThread that we need to create
+        // a ThreadReferenceImpl.
+        Oop[] myThreads = OopUtilities.threadGroupOopGetThreads(ref());
+
+        ArrayList myList = new ArrayList(myThreads.length);
+        for (int ii = 0; ii < myThreads.length; ii++) {
+            JavaThread jt = OopUtilities.threadOopGetJavaThread(myThreads[ii]);
+            if (jt != null) {
+                ThreadReferenceImpl xx = (ThreadReferenceImpl)vm.threadMirror(jt);
+                myList.add(xx);
+            }
+        }
+        return myList;
+    }
+
+    public List threadGroups() {
+        Oop[] myGroups = OopUtilities.threadGroupOopGetGroups(ref());
+        ArrayList myList = new ArrayList(myGroups.length);
+        for (int ii = 0; ii < myGroups.length; ii++) {
+            ThreadGroupReferenceImpl xx = (ThreadGroupReferenceImpl)vm.threadGroupMirror(
+                                          (Instance)myGroups[ii]);
+            myList.add(xx);
+
+        }
+        return myList;
+    }
+
+    public String toString() {
+        return "instance of " + referenceType().name() +
+               "(name='" + name() + "', " + "id=" + uniqueID() + ")";
+    }
+}