--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/OSThread.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2004 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.runtime;
+
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.types.*;
+
+// The OSThread class holds OS-specific thread information.  It is equivalent
+// to the sys_thread_t structure of the classic JVM implementation.
+public class OSThread extends VMObject {
+    private static JIntField interruptedField;
+    static {
+        VM.registerVMInitializedObserver(new Observer() {
+            public void update(Observable o, Object data) {
+                initialize(VM.getVM().getTypeDataBase());
+            }
+        });
+    }
+
+    private static synchronized void initialize(TypeDataBase db) {
+        Type type = db.lookupType("OSThread");
+        interruptedField = type.getJIntField("_interrupted");
+    }
+
+    public OSThread(Address addr) {
+        super(addr);
+    }
+
+    public boolean interrupted() {
+        return ((int)interruptedField.getValue(addr)) != 0;
+    }
+}