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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_MUXED_TMS_H
#define TAO_MUXED_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 "ace/Functor.h"
#include "ace/Hash_Map_Manager.h"
class TAO_Export TAO_Muxed_TMS : public TAO_Transport_Mux_Strategy
{
// = DESCRIPTION
// Using this strategy a single connection can have multiple
// outstanding requests.
// @@ Can the performance of the demuxer be made more predictable,
// for example, using the request id as an active demux key?
// NOTE: check the OMG resolutions about bidirectional
// connections, it is possible that the request ids can only
// assume even or odd values.
//
public:
TAO_Muxed_TMS (TAO_Transport *transport);
// Constructor.
virtual ~TAO_Muxed_TMS (void);
// Destructor.
virtual CORBA::ULong request_id (void);
// Generate and return an unique request id for the current
// invocation.
// = Please read the documentation in the TAO_Transport_Mux_Strategy
// class.
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:
ACE_SYNCH_MUTEX lock_;
// Lock to protect the state of this class
CORBA::ULong request_id_generator_;
// Used to generate a different request_id on each call to
// request_id().
typedef ACE_Hash_Map_Manager_Ex <CORBA::ULong,
TAO_Reply_Dispatcher *,
ACE_Hash <CORBA::ULong>,
ACE_Equal_To <CORBA::ULong>,
ACE_Null_Mutex> REQUEST_DISPATCHER_TABLE;
REQUEST_DISPATCHER_TABLE dispatcher_table_;
// Table of <Request ID, Reply Dispatcher> pairs.
TAO_ORB_Core *orb_core_;
// Keep track of the orb core pointer. We need to this to create the
// Reply Dispatchers.
TAO_GIOP_Message_State *message_state_;
// Message state where the current input message is being read. This
// is created at start of each incoming message. When that message
// is read, the message is processed and for the next message a new
// message state is created.
// @@ 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 /* MUXED_TMS_H */
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