XrdSfsXio.hh

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#ifndef __SFS_XIO_H__
#define __SFS_XIO_H__
/******************************************************************************/
/*                                                                            */
/*                          X r d S f s X i o . h h                           */
/*                                                                            */
/* (c) 2013 by the Board of Trustees of the Leland Stanford, Jr., University  */
/*   Produced by Andrew Hanushevsky for Stanford University under contract    */
/*              DE-AC02-76-SFO0515 with the Department of Energy              */
/*                                                                            */
/* This file is part of the XRootD software suite.                            */
/*                                                                            */
/* XRootD is free software: you can redistribute it and/or modify it under    */
/* the terms of the GNU Lesser General Public License as published by the     */
/* Free Software Foundation, either version 3 of the License, or (at your     */
/* option) any later version.                                                 */
/*                                                                            */
/* XRootD 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 Lesser General Public       */
/* License for more details.                                                  */
/*                                                                            */
/* You should have received a copy of the GNU Lesser General Public License   */
/* along with XRootD in a file called COPYING.LESSER (LGPL license) and file  */
/* COPYING (GPL license).  If not, see <http://www.gnu.org/licenses/>.        */
/*                                                                            */
/* The copyright holder's institutional names and contributor's names may not */
/* be used to endorse or promote products derived from this software without  */
/* specific prior written permission of the institution or contributor.       */
/******************************************************************************/
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
class XrdSfsXioHandle
{
public:
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
virtual char *Buffer(int **blen=0) = 0;
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
virtual void  Recycle() = 0;
 
              XrdSfsXioHandle() {}
virtual      ~XrdSfsXioHandle() {}
};
 
/******************************************************************************/
/*                       C l a s s   X r d S f s X i o                        */
/******************************************************************************/
  
class XrdSfsXio
{
public:
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
enum XioStatus {allOK = 0,   
                BadBuff,     
                BadHandle,   
                NotWrite,    
                TooMany      
               };
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
virtual XioStatus Swap(const char      * curBuff,
                       XrdSfsXioHandle *&curHand,
                       XrdSfsXioHandle * oldHand=0
                      ) = 0;
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
             XrdSfsXio() {}
virtual     ~XrdSfsXio() {}
};
#endif