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diff --git a/mozilla/nsprpub/pr/src/cplus/rcthread.h b/mozilla/nsprpub/pr/src/cplus/rcthread.h
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/* RCThread.h */
+
+#if defined(_RCTHREAD_H)
+#else
+#define _RCTHREAD_H
+
+#include "rcbase.h"
+
+#include <prthread.h>
+
+class RCInterval;
+
+class PR_IMPLEMENT(RCThreadPrivateData)
+{
+public:
+    RCThreadPrivateData();
+    RCThreadPrivateData(const RCThreadPrivateData&);
+
+    virtual ~RCThreadPrivateData();
+
+    virtual void Release() = 0;
+
+};  /* RCThreadPrivateData */
+
+class PR_IMPLEMENT(RCThread): public RCBase
+{
+public:
+
+    typedef enum 
+    {
+        local = PR_LOCAL_THREAD, global = PR_GLOBAL_THREAD
+    } Scope;
+
+    typedef enum
+    {
+        joinable = PR_JOINABLE_THREAD, unjoinable = PR_UNJOINABLE_THREAD
+    } State;
+
+    typedef enum
+    {
+        first = PR_PRIORITY_FIRST,
+        low = PR_PRIORITY_LOW,
+        normal = PR_PRIORITY_NORMAL,
+        high = PR_PRIORITY_HIGH,
+        urgent = PR_PRIORITY_URGENT,
+        last = PR_PRIORITY_LAST
+    } Priority;
+
+    /*
+     * Create a new thread, providing scope and joinability state.
+     */
+    RCThread(Scope scope, State state, PRUint32 stackSize=0);
+
+    /*
+     * New threads are created in a suspended state. It must be 'started"
+     * before it begins execution in the class' defined 'RootFunction()'.
+     */
+    virtual PRStatus Start();
+
+    /*
+     * If a thread is created joinable, then the thread's object exists
+     * until join is called. The thread that calls join will block until
+     * the target thread returns from it's root function.
+     */
+    virtual PRStatus Join();
+    
+    /*
+     * The priority of a newly created thread is the same as the creator.
+     * The priority may be changed either by the new thread itself, by
+     * the creator or any other arbitrary thread.
+     */   
+    virtual void SetPriority(Priority newPriority);
+
+
+    /*
+     * Interrupt another thread, causing it to stop what it
+     * is doing and return with a well known error code.
+     */
+    virtual PRStatus Interrupt();
+    
+    /*
+     * And in case a thread was interrupted and didn't get a chance
+     * to have the notification delivered, a way to cancel the pending
+     * status.
+     */
+    static void ClearInterrupt();
+    
+    /*
+     * Methods to discover the attributes of an existing thread.
+     */
+    static PRThread *Self();
+    Scope GetScope() const;
+    State GetState() const;
+    Priority GetPriority() const;
+
+    /*
+     * Thread private data
+     */
+    static PRStatus NewPrivateIndex(PRUintn* index);
+
+    /*
+     * Getting it - if you want to modify, make a copy
+     */
+    static RCThreadPrivateData* GetPrivateData(PRUintn index);
+
+    /*
+     * Setting it to <empty> - deletes existing data
+     */
+    static PRStatus SetPrivateData(PRUintn index);
+
+    /*
+     * Setting it - runtime will make a copy, freeing old iff necessary
+     */
+    static PRStatus SetPrivateData(PRUintn index, RCThreadPrivateData* data);
+
+    /*
+     * Scheduling control
+     */
+    static PRStatus Sleep(const RCInterval& ticks);
+
+    friend void nas_Root(void*);
+    friend class RCPrimordialThread;
+protected:
+
+    /*
+     * The instantiator of a class must not call the destructor. The base
+     * implementation of Join will, and if the thread is created unjoinable,
+     * then the code that called the RootFunction will call the desctructor.
+     */
+    virtual ~RCThread();
+
+private:
+
+    /*
+     * This is where a newly created thread begins execution. Returning
+     * from this function is equivalent to terminating the thread.
+     */
+    virtual void RootFunction() = 0;
+
+    PRThread *identity;
+
+    /* Threads are unstarted until started - pretty startling */
+    enum {ex_unstarted, ex_started} execution;
+
+    /* There is no public default constructor or copy constructor */
+    RCThread();
+    RCThread(const RCThread&);
+    
+    /* And there is no assignment operator */
+    void operator=(const RCThread&);
+
+public:
+    static RCPrimordialThread *WrapPrimordialThread();    
+
+ };
+ 
+/*
+** class RCPrimordialThread
+*/
+class PR_IMPLEMENT(RCPrimordialThread): public RCThread
+{
+public:
+    /*
+    ** The primordial thread can (optionally) wait for all created
+    ** threads to terminate before allowing the process to exit.
+    ** Not calling Cleanup() before returning from main() will cause
+    ** the immediate termination of the entire process, including
+    ** any running threads.
+    */
+    static PRStatus Cleanup();
+
+    /*
+    ** Only the primordial thread is allowed to adjust the number of
+    ** virtual processors of the runtime. It's a lame security thing.
+    */
+    static PRStatus SetVirtualProcessors(PRIntn count=10);
+
+friend class RCThread;
+private:
+    /*
+    ** None other than the runtime can create of destruct
+    ** a primordial thread. It is fabricated by the runtime
+    ** to wrap the thread that initiated the application.
+    */
+    RCPrimordialThread();
+    ~RCPrimordialThread();
+    void RootFunction();
+};  /* RCPrimordialThread */
+
+ #endif /* defined(_RCTHREAD_H) */