/usr/include/omniORB4/IOP_C.h is in libomniorb4-dev 4.1.6-2ubuntu1.
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// Package : omniORB2
// IOP_C.h Created on: 05/01/2001
// Author : Sai Lai Lo (sll)
//
// Copyright (C) 2001 AT&T Laboratories Cambridge
//
// This file is part of the omniORB library
//
// The omniORB library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free
// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA
//
//
// Description:
// *** PROPRIETORY INTERFACE ***
//
/*
$Log$
Revision 1.1.2.2 2001/05/02 14:20:15 sll
Make sure that getStream() is used instead of casting to get a cdrStream
from a IOP_C and IOP_S.
Revision 1.1.2.1 2001/04/18 17:26:29 sll
Big checkin with the brand new internal APIs.
*/
#ifndef __IOP_C_H__
#define __IOP_C_H__
OMNI_NAMESPACE_BEGIN(omni)
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
class IOP_C {
public:
IOP_C() {}
virtual ~IOP_C() {}
enum State { UnUsed,
Idle,
RequestInProgress,
WaitingForReply,
ReplyIsBeingProcessed,
Zombie
};
virtual cdrStream& getStream() = 0;
// A IOP_C instance operates in one of the following states:
//
// Idle - no request has been initiated
// RequestInProgress - a request is being composed, arguments
// can be marshalled into the
// cdrStream
// WaitingForReply - the request has been sent, no reply
// has come in yet.
// ReplyIsBeingProcessed - a reply has started arriving, results
// can be unmarshalled from the
// cdrStream
// Zombie - the destructor has been called
//
// Calling the member functions InitialiseRequest(), ReceiveReply() and
// RequestCompleted() cause the IOP_C to change state. The state transitions
// are as follows:
// +------------+
// | | ~IOP_C()
// +----+---+ |
// | Zombie |<-------+
// +--------+
// ^
// | ~IOP_C()
// |
// RequestCompleted() +----+---+ InitialiseRequest()
// +---------------->| Idle |---------------+
// | +---+----+ |
// | | V
// +-----------------------+ | +--------------------+
// | ReplyIsBeingProcessed | | | RequestInProgress |
// +-----------------------+ | +---------+----------+
// ^ | |
// | | |
// | | IssueLocateRequest() |
// | | |
// | | |
// | | |
// | | |
// | V |
// | +--------------------+ |
// +---------| WaitingForReply |<-------------+
// <got a proper +--------------------+ ReceiveReply()
// reply header while
// in ReceiveReply() or IssueLocateRequest()>
//
// The constructor initialises a IOP_C to Idle state.
//
// When the destructor is called, the state is examined. If it is *not* in
// Idle or WaitingForReply, there is something seriously wrong with the
// cdrStream. Also the state of the strand, on which the
// cdrStream is built, is unknown. For this reason, the strand
// is marked as dying by the destructor. The destructor may be called
// multiple times. It simply returns if the instance is already in Zombie
// state.
//
// Calling the member functions InitialiseRequest(), ReceiveReply(),
// RequestCompleted() and IssueLocateRequest() while the IOP_C is not
// in the appropriate state as indicated above would cause a
// CORBA::INTERNAL() exception to be raised.
//
virtual void InitialiseRequest() = 0;
virtual GIOP::ReplyStatusType ReceiveReply() = 0;
virtual void RequestCompleted(_CORBA_Boolean skip=0) = 0;
virtual GIOP::LocateStatusType IssueLocateRequest() = 0;
private:
IOP_C(const IOP_C&);
IOP_C& operator=(const IOP_C&);
operator cdrStream& ();
// This is to make sure that we do not have any code that blindly cast
// a reference to this object to a cdrStream&. All code should use
// getStream() instead.
};
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
class IOP_C_Holder {
public:
IOP_C_Holder(const omniIOR*,const _CORBA_Octet*,_CORBA_ULong,Rope*,
omniCallDescriptor*);
~IOP_C_Holder();
IOP_C* operator->() { return pd_iop_c; }
operator IOP_C& () { return *pd_iop_c; }
private:
Rope* pd_rope;
IOP_C* pd_iop_c;
};
OMNI_NAMESPACE_END(omni)
#endif // __IOP_C_H__
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