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diff --git a/ACE/TAO/tao/RTCORBA/RT_Mutex.h b/ACE/TAO/tao/RTCORBA/RT_Mutex.h
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+// -*- C++ -*-
+
+//=============================================================================
+/**
+ * @file RT_Mutex.h
+ *
+ * $Id$
+ *
+ * @author Frank Hunleth <fhunleth@cs.wustl.edu>
+ */
+//=============================================================================
+
+
+#ifndef TAO_RT_MUTEX_H
+#define TAO_RT_MUTEX_H
+
+#include /**/ "ace/pre.h"
+#include "tao/orbconf.h"
+
+#if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "tao/RTCORBA/RTCORBA_includeC.h"
+#include "tao/LocalObject.h"
+
+#if (TAO_HAS_NAMED_RT_MUTEXES == 1)
+# include "ace/SString.h"
+#endif /* TAO_HAS_NAMED_RT_MUTEXES == 1 */
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4250)
+#endif /* _MSC_VER */
+
+TAO_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * @class TAO_RT_Mutex
+ *
+ * @brief Abstract base class for the TAO RT Mutex implementations
+ *
+ * This class just serves as a base class for any of the TAO
+ * RT Mutex implementations. Instances of these classes should
+ * be created using the RTCORBA::create_mutex() method.
+ *
+ */
+
+class TAO_RTCORBA_Export TAO_RT_Mutex
+ : public RTCORBA::Mutex,
+ public ::CORBA::LocalObject
+{
+public:
+
+ /// Acquire the lock.
+ virtual void lock (void);
+
+ /// Release the lock.
+ virtual void unlock (void);
+
+ /**
+ * Acquire the lock, but only wait up to @a max_wait time. Note
+ * that this operation may not be available on all OS platforms, so
+ * if you're interested in writing maximally portable programs avoid
+ * using this operation in your program designs.
+ */
+ virtual CORBA::Boolean try_lock (TimeBase::TimeT max_wait
+ );
+
+ /// Returns the name of the mutex.
+ virtual const char *name (void) const;
+
+ /// Destructor.
+ virtual ~TAO_RT_Mutex (void);
+
+protected:
+ /// Synchronization lock.
+ TAO_SYNCH_MUTEX mu_;
+};
+
+#if (TAO_HAS_NAMED_RT_MUTEXES == 1)
+/**
+ * @class TAO_Named_RT_Mutex
+ *
+ * @brief Extension to TAO_RT_Mutex to support named mutexes.
+ *
+ */
+class TAO_RTCORBA_Export TAO_Named_RT_Mutex : public TAO_RT_Mutex
+{
+public:
+ /// Constructor.
+ TAO_Named_RT_Mutex (const char *name);
+
+ /// Returns the name of the mutex.
+ virtual const char *name (void) const;
+
+protected:
+
+ /// My name.
+ ACE_CString name_;
+};
+#endif /* TAO_HAS_NAMED_RT_MUTEXES == 1 */
+
+TAO_END_VERSIONED_NAMESPACE_DECL
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif /* _MSC_VER */
+
+#endif /* TAO_HAS_CORBA_MESSAGING && TAO_HAS_CORBA_MESSAGING != 0 */
+
+#include /**/ "ace/post.h"
+#endif /* TAO_RT_MUTEX_H */