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@@ -0,0 +1,120 @@
+#ifndef CYGONCE_KERNEL_MUTEX_HXX
+#define CYGONCE_KERNEL_MUTEX_HXX
+
+//==========================================================================
+//
+//	mutex.hxx
+//
+//	Mutex class declarations
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// 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 eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s): 	nickg
+// Contributors:	nickg
+// Date:	1997-09-09
+// Purpose:	Define Mutex class interfaces
+// Description:	The classes defined here provide the APIs for mutexes
+//              and condition variables.
+// Usage:       #include <cyg/kernel/mutex.hxx>
+//		
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+#include <cyg/kernel/ktypes.h>
+#include <cyg/infra/cyg_ass.h>         // assertion macros
+
+#include <cyg/kernel/thread.hxx>
+
+// -------------------------------------------------------------------------
+// Mutex.
+
+class Cyg_Mutex
+{
+    friend class Cyg_Condition_Variable;
+    
+    cyg_atomic          locked;         // true if locked
+
+    Cyg_Thread          *owner;         // Current locking thread
+
+    Cyg_ThreadQueue     queue;          // Queue of waiting threads
+    
+public:
+
+    CYGDBG_DEFINE_CHECK_THIS
+    
+    Cyg_Mutex();                        // Create in unlocked state
+
+    ~Cyg_Mutex();                       // Destructor
+        
+    cyg_bool    lock();                 // lock and/or wait
+
+    cyg_bool    trylock();              // try to lock and return success
+
+    void        unlock();               // unlock
+    
+};
+
+// -------------------------------------------------------------------------
+// Condition variable.
+
+class Cyg_Condition_Variable
+{
+    Cyg_Mutex           *mutex;         // Associated mutex
+
+    Cyg_ThreadQueue     queue;          // Queue of waiting threads
+    
+public:
+
+    CYGDBG_DEFINE_CHECK_THIS
+    
+    Cyg_Condition_Variable(
+        Cyg_Mutex &mutex                // linked mutex
+        );
+
+    ~Cyg_Condition_Variable();          // Destructor
+        
+    void     wait();                    // Wait for condition to be true
+
+    void     signal();                  // Set cond true, wake one thread
+
+    void     broadcast();               // Set cond true, wake all threads
+
+#ifdef CYGMFN_KERNEL_SYNCH_CONDVAR_TIMED_WAIT
+
+    // Wait until a signal or timeout expiry
+    cyg_bool wait( cyg_tick_count timeout );
+
+#endif
+    
+};
+
+
+// -------------------------------------------------------------------------
+
+#endif // ifndef CYGONCE_KERNEL_MUTEX_HXX
+// EOF mutex.hxx