XrdCmsNash.hh

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#ifndef __XRDCMSNASH_HH__
#define __XRDCMSNASH_HH__
/******************************************************************************/
/*                                                                            */
/*                         X r d C m s N a s h . h h                          */
/*                                                                            */
/* (c) 2007 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 "XrdCms/XrdCmsKey.hh"
  
class XrdCmsNash
{
public:
XrdCmsKeyItem *Add(XrdCmsKey &Key);

XrdCmsKeyItem *Find(XrdCmsKey &Key);

int            Recycle(XrdCmsKeyItem *rip);

// When allocateing a new nash, specify the required starting size. Make
// sure that the previous number is the correct Fibonocci antecedent. The
// series is simply n[j] = n[j-1] + n[j-2].
//
    XrdCmsNash(int psize = 17711, int size = 28657);
   ~XrdCmsNash() {} // Never gets deleted

private:

static const int LoadMax = 80;

void               Expand();

XrdCmsKeyItem  **nashtable;
int              prevtablesize;
int              nashtablesize;
int              nashnum;
int              Threshold;
};
#endif