XrdOucPinLoader.hh

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#ifndef __XRDOUCPINLOADER_HH__
#define __XRDOUCPINLOADER_HH__
/******************************************************************************/
/*                                                                            */
/*                    X r d O u c P i n L o a d e r . h h                     */
/*                                                                            */
/* (c) 2014 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  XrdSysError;
class  XrdSysPlugin;
struct XrdVersionInfo;
 
class XrdOucPinLoader
{
public:
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
XrdSysPlugin *Export() {XrdSysPlugin *tmp = piP; piP = 0; return tmp;}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
void          Global(bool glbl) {global = glbl;}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
const char   *LastMsg() {return (errBP ? errBP : "");}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
const char   *Path() {return theLib;}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
void         *Resolve(const char *symbl, int mcnt=1);
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
void          Unload(bool dodel=false);
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
              XrdOucPinLoader(XrdSysError    *errP,
                              XrdVersionInfo *vInfo,
                              const char     *drctv,
                              const char     *plib);
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
              XrdOucPinLoader(char           *eBuff,
                              int             eBlen,
                              XrdVersionInfo *vInfo,
                              const char     *drctv,
                              const char     *plib);
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
              XrdOucPinLoader(XrdVersionInfo *vInfo,
                              const char     *drctv,
                              const char     *plib);
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
             ~XrdOucPinLoader();
 
private:
void            Inform(const char *txt1,   const char *txt2=0,
                       const char *txt3=0, const char *txt4=0,
                       const char *txt5=0);
void            Init(const char *drctv, const char *plib);
bool            LoadLib(int mcnt);
 
XrdSysError    *eDest;
XrdSysPlugin   *piP;
XrdVersionInfo *viP;
const char     *dName;
char           *theLib;
char           *altLib;
char           *errBP;
int             errBL;
bool            global;
bool            frBuff;
bool            badLib;
};
#endif