--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/jdi/MonitorInfoImpl.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2005 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 com.sun.jdi.*;
+
+// FIXME: This class should implement com.sun.jdi.MonitorInfo.
+//        So fix this when hotspot is started to build with
+//        jdk1.6.
+public class MonitorInfoImpl extends MirrorImpl {
+
+    /* Once false, monitorInfo should not be used.
+     * access synchronized on (vm.state())
+     */
+    private boolean isValid = true;
+
+    ObjectReference monitor;
+    ThreadReference thread;
+    int  stack_depth;
+
+    MonitorInfoImpl(VirtualMachine vm, ObjectReference mon,
+                    ThreadReference thread, int dpth) {
+        super(vm);
+        this.monitor = mon;
+        this.thread = thread;
+        this.stack_depth = dpth;
+    }
+
+    private void validateMonitorInfo() {
+        if (!isValid) {
+            throw new InvalidStackFrameException("Thread has been resumed");
+        }
+    }
+
+    public ObjectReference monitor() {
+        validateMonitorInfo();
+        return monitor;
+    }
+
+    public int stackDepth() {
+        validateMonitorInfo();
+        return stack_depth;
+    }
+
+    public ThreadReference thread() {
+        validateMonitorInfo();
+        return thread;
+    }
+}