XrdFrcXLock.hh

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#ifndef __FRCXLOCK_HH__
#define __FRCXLOCK_HH__
/******************************************************************************/
/*                                                                            */
/*                        X r d F r c X L o c k . h h                         */
/*                                                                            */
/* (c) 2010 by the Board of Trustees of the Leland Stanford, Jr., University  */
/*                            All Rights Reserved                             */
/*   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.       */
/******************************************************************************/
 
#include "XrdOuc/XrdOucSxeq.hh"
  
class XrdFrcXLock
{
public:
 
static int Init(const char *aPath)
               {XrdOucSxeq mySxeq(".frmxeq", 0, aPath);
                return ((lkFD = mySxeq.Detach()) >= 0);
               }
 
           XrdFrcXLock() {XrdOucSxeq::Serialize(lkFD, 0);}
          ~XrdFrcXLock() {XrdOucSxeq::Release(lkFD);}
 
private:
 
static int lkFD;
};
 
#ifndef __FRCXLOCK_CC__
#define __FRCXLOCK_CC__
int XrdFrcXLock::lkFD = -1;
#endif
 
#endif