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diff --git a/trunk/TAO/orbsvcs/orbsvcs/FtRtEvent/EventChannel/Replication_Service.h b/trunk/TAO/orbsvcs/orbsvcs/FtRtEvent/EventChannel/Replication_Service.h
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+++ b/trunk/TAO/orbsvcs/orbsvcs/FtRtEvent/EventChannel/Replication_Service.h
@@ -0,0 +1,85 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ * @file Replication_Service.h
+ *
+ * $Id$
+ *
+ * @author Huang-Ming Huang <hh1@cse.wustl.edu>
+ */
+//=============================================================================
+
+#ifndef REPLCATION_SERVICE_H
+#define REPLCATION_SERVICE_H
+
+#include "orbsvcs/FtRtecEventChannelAdminC.h"
+#include "orbsvcs/FtRtEvent/EventChannel/FTEC_Become_Primary_Listener.h"
+#include "tao/PortableInterceptorC.h"
+#include "ace/Service_Object.h"
+#include "orbsvcs/FtRtEvent/EventChannel/ftrtec_export.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+TAO_BEGIN_VERSIONED_NAMESPACE_DECL
+
+namespace FTRTEC
+{
+ class TAO_FTRTEC_Export Replication_Service
+ : public TAO_FTEC_Become_Primary_Listener
+ , public ACE_Service_Object
+ {
+ public:
+ static Replication_Service* instance();
+
+ Replication_Service();
+ ~Replication_Service();
+
+ virtual int init (int argc,
+ ACE_TCHAR* []);
+
+ virtual void become_primary();
+
+ /**
+ * Used for checking if the incoming replication message is out of sequence.
+ */
+ void check_validity(ACE_ENV_SINGLE_ARG_DECL);
+
+ typedef void (FtRtecEventChannelAdmin::EventChannelFacade::*RollbackOperation)
+ (const FtRtecEventChannelAdmin::ObjectId& ACE_ENV_ARG_DECL);
+
+ /**
+ * Replicate a request.
+ *
+ * @param state The request to be replicated.
+ * @param rollback The rollback operation when the replication failed.
+ */
+ void replicate_request(const FtRtecEventChannelAdmin::Operation& update,
+ RollbackOperation rollback
+ ACE_ENV_ARG_DECL);
+
+ /**
+ * Inform the backup replicas that a new replica has joined the object
+ * group.
+ */
+ void add_member(const FTRT::ManagerInfo & info,
+ CORBA::ULong object_group_ref_version
+ ACE_ENV_ARG_DECL);
+
+ int acquire_read (void);
+ int acquire_write (void);
+ int release (void);
+
+ int threads() const;
+ };
+}
+
+TAO_END_VERSIONED_NAMESPACE_DECL
+
+ACE_STATIC_SVC_DECLARE_EXPORT (TAO_FTRTEC, Replication_Service)
+ACE_STATIC_SVC_REQUIRE(Replication_Service)
+ACE_FACTORY_DECLARE (TAO_FTRTEC, Replication_Service)
+
+#endif //REPLCATION_SERVICE_H