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XrdPosixPrepIO.hh
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XrdPosixPrepIO.hh
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#ifndef __XRDPOSIXPREPIO_HH__
#define __XRDPOSIXPREPIO_HH__
/******************************************************************************/
/* */
/* X r d P o s i x P r e p I O . h h */
/* */
/* (c) 2016 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 "Xrd/XrdJob.hh"
#include "XrdPosix/XrdPosixFile.hh"
class XrdPosixPrepIO : public XrdOucCacheIO2
{
public:
XrdOucCacheIO *Base() {return this;} // Already defined
XrdOucCacheIO *Detach() {return this;} // Already defined
long long FSize() {return (Init() ? fileP->FSize() : openRC);}
bool ioActive() { return false; } // Already defined
const char *Path() {return fileP->Path();}
int Read (char *Buffer, long long Offset, int Length)
{return (Init() ? fileP->Read(Buffer, Offset, Length) : openRC);}
void Read (XrdOucCacheIOCB &iocb, char *buff, long long offs, int rlen)
{if (Init(&iocb)) fileP->Read(iocb, buff, offs, rlen);
else iocb.Done(openRC);
}
int ReadV(const XrdOucIOVec *readV, int n)
{return (Init() ? fileP->ReadV(readV, n) : openRC);}
void ReadV(XrdOucCacheIOCB &iocb, const XrdOucIOVec *readV, int rnum)
{if (Init(&iocb)) fileP->ReadV(iocb, readV, rnum);
else iocb.Done(openRC);
}
int Sync() {return (Init() ? fileP->Sync() : openRC);}
void Sync(XrdOucCacheIOCB &iocb)
{if (Init(&iocb)) fileP->Sync(iocb);
else iocb.Done(openRC);
}
int Trunc(long long Offset)
{return (Init() ? fileP->Trunc(Offset) : openRC);}
int Write(char *Buffer, long long Offset, int Length)
{return (Init() ? fileP->Write(Buffer,Offset,Length) : openRC);}
void Write(XrdOucCacheIOCB &iocb, char *buff, long long offs, int wlen)
{if (Init(&iocb)) fileP->Write(iocb, buff, offs, wlen);
else iocb.Done(openRC);
}
XrdPosixPrepIO(XrdPosixFile *fP, XrdCl::OpenFlags::Flags clflags,
XrdCl::Access::Mode clmode)
: fileP(fP), openRC(0), iCalls(0),
clFlags(clflags), clMode(clmode) {}
virtual ~XrdPosixPrepIO() {}
private:
bool Init(XrdOucCacheIOCB *iocbP=0);
XrdPosixFile *fileP;
int openRC;
int iCalls;
XrdCl::OpenFlags::Flags clFlags;
XrdCl::Access::Mode clMode;
};
#endif