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XrdCmsRRData.cc
Go to the documentation of this file.
/******************************************************************************/
/* */
/* X r d C m s R R D a t a . c c */
/* */
/* (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 <unistd.h>
#include "XrdCms/XrdCmsRRData.hh"
#include "XrdSys/XrdSysPlatform.hh"
#include "XrdSys/XrdSysPthread.hh"
using namespace XrdCms;
/******************************************************************************/
/* g e t B u f f */
/******************************************************************************/
int XrdCmsRRData::getBuff(size_t bsz)
{
static size_t PageSize = sysconf(_SC_PAGESIZE);
size_t Alignment = PageSize;
if (bsz < Alignment)
{if (bsz <= 8) Alignment = bsz = 8;
else {do {Alignment = Alignment >> 1;} while(bsz < Alignment);
Alignment = Alignment << 1; bsz = Alignment;
}
}
if (Buff) free(Buff);
if (posix_memalign((void **)&Buff, Alignment, bsz))
{Buff = 0; return 0;}
Blen = bsz;
return 1;
}
/******************************************************************************/
/* O b j e c t i f y */
/******************************************************************************/
XrdCmsRRData *XrdCmsRRData::Objectify(XrdCmsRRData *op)
{
static XrdSysMutex myMutex;
static XrdCmsRRData *Free;
// Obtain a new object or recycle an old one
//
myMutex.Lock();
if (op) {op->Next = Free; Free = op; op = 0;}
else {if ((op = Free)) Free = op->Next;
else {op = new XrdCmsRRData; op->Buff = 0; op->Blen = 0;}
op->Ident = 0; op->Next = 0;
}
myMutex.UnLock();
return op;
}
XrdCmsRRData.hh
XrdSysPlatform.hh
XrdSysPthread.hh
XrdCmsRRData
Definition XrdCmsRRData.hh:52
XrdCmsRRData::Objectify
static XrdCmsRRData * Objectify(XrdCmsRRData *op=0)
Definition XrdCmsRRData.cc:68
XrdCmsRRData::Buff
char * Buff
Definition XrdCmsRRData.hh:71
XrdCmsRRData::Blen
int Blen
Definition XrdCmsRRData.hh:72
XrdCmsRRData::Next
XrdCmsRRData * Next
Definition XrdCmsRRData.hh:94
XrdCmsRRData::Ident
char * Ident
Definition XrdCmsRRData.hh:64
XrdCmsRRData::getBuff
int getBuff(size_t bsz)
Definition XrdCmsRRData.cc:44
XrdSysMutex
Definition XrdSysPthread.hh:165
XrdSysMutex::Lock
void Lock()
Definition XrdSysPthread.hh:222
XrdSysMutex::UnLock
void UnLock()
Definition XrdSysPthread.hh:224
XrdCms
Definition YProtocol.hh:78