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// -*- C++ -*-
//=============================================================================
/**
* @file Remote_Invocation.h
*
* @author Balachandran Natarajan <bala@dre.vanderbilt.edu>
*/
//=============================================================================
#ifndef TAO_REMOTE_INVOCATION_H
#define TAO_REMOTE_INVOCATION_H
#include /**/ "ace/pre.h"
#include "tao/Invocation_Base.h"
#include "tao/Transport.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/operation_details.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
class TAO_Operation_Details;
class TAO_Target_Specification;
class TAO_OutputCDR;
namespace TAO
{
class Profile_Transport_Resolver;
class Argument;
/**
* @class Remote_Invocation
*
* @brief Base class for remote invocations.
*
* This class encapsulates some of the common functionalities used by
* synchronous, asynchronous, DII and DSI invocations.
*
*/
class TAO_Export Remote_Invocation : public Invocation_Base
{
public:
/**
* @param otarget The original target on which this invocation
* was started. This is there to be passed up to its parent
* class.
*
* @param resolver The profile and transport holder.
*
* @param detail Pperation details of the invocation on the target
*
* @param response_expected Flag to indicate whether the
* operation encapsulated by @a op returns a response or not.
*/
Remote_Invocation (CORBA::Object_ptr otarget,
Profile_Transport_Resolver &resolver,
TAO_Operation_Details &detail,
bool response_expected);
/**
* @param byte_order The intended byte order for the message output
* stream. For use in message gateways that forward messages from
* sources with different byte order than the native order.
*/
void _tao_byte_order (int byte_order);
/**
* Get the intended byte order for the message output stream.
* In case of gateway messages this could divert from the native
* byte order.
*/
int _tao_byte_order ();
protected:
/// Initialize the @a spec.
void init_target_spec (TAO_Target_Specification &spec, TAO_OutputCDR& output);
/// Write the GIOP header into the stream.
void write_header (TAO_OutputCDR &out_stream);
/// Marshal the arguments into the stream.
void marshal_data (TAO_OutputCDR &cdr);
/// Write the message onto the socket
Invocation_Status send_message (TAO_OutputCDR &cdr,
TAO_Message_Semantics message_semantics,
ACE_Time_Value *max_wait_time);
protected:
/// Our resolver
Profile_Transport_Resolver &resolver_;
/// Intended byte order for message output stream
int byte_order_;
};
struct TAO_Export CDR_Byte_Order_Guard
{
TAO_OutputCDR& cdr_;
int byte_order_;
int present_byte_order_;
void reset ();
CDR_Byte_Order_Guard (TAO_OutputCDR&, int);
~CDR_Byte_Order_Guard ();
};
}
TAO_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
# include "tao/Remote_Invocation.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /*TAO_REMOTE_INVOCATION_H*/
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