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// This may look like C, but it's really -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = AUTHOR
// Alexander Babu Arulanthu <alex@cs.wustl.edu>
//
// ============================================================================
#ifndef TAO_EXCLUSIVE_TMS_H
#define TAO_EXCLUSIVE_TMS_H
#include "ace/pre.h"
#include "tao/Transport_Mux_Strategy.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/GIOP_Message_State.h"
class TAO_Export TAO_Exclusive_TMS : public TAO_Transport_Mux_Strategy
{
// = DESCRIPTION
// Using this strategy only one request can be pending at a time
// in a connection. This improves performance because the client
// does not have to demux the reply, and there is less need for
// synchronization.
// On the other hand, it does not scale well when you have
// multiple client threads or asynchronous messaging.
//
public:
TAO_Exclusive_TMS (TAO_Transport *transport);
// Constructor.
virtual ~TAO_Exclusive_TMS (void);
// Destructor.
// = Please read the documentation in the TAO_Transport_Mux_Strategy
// class.
virtual CORBA::ULong request_id (void);
virtual int bind_dispatcher (CORBA::ULong request_id,
TAO_Reply_Dispatcher *rh);
virtual void unbind_dispatcher (CORBA::ULong request_id);
virtual int dispatch_reply (CORBA::ULong request_id,
CORBA::ULong reply_status,
const TAO_GIOP_Version& version,
IOP::ServiceContextList& reply_ctx,
TAO_GIOP_Message_State* message_state);
virtual TAO_GIOP_Message_State *get_message_state (void);
virtual void destroy_message_state (TAO_GIOP_Message_State *);
virtual int idle_after_send (void);
virtual int idle_after_reply (void);
virtual void connection_closed (void);
protected:
CORBA::ULong request_id_generator_;
// Used to generate a different request_id on each call to
// request_id().
int has_request_;
// If 0 then the request id and reply dispatcher below are
// meaningless
CORBA::ULong request_id_;
// Request id for the current request.
TAO_Reply_Dispatcher *rd_;
// Reply Dispatcher corresponding to the request.
TAO_GIOP_Message_State message_state_;
// Message state to read the incoming message.
// @@ Having members of type TAO_GIOP* indicates that we
// (Transport_Mux_Strategy) are aware of the underlying messaging
// protocol. But for the present let us close our eyes till we are
// able to iterate on a use case - Bala.
};
#include "ace/post.h"
#endif /* EXCLUSIVE_TMS_H */
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