XrdFileCacheIOFileBlock.hh

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#ifndef __XRDFILECACHE_IO_FILE_BLOCK_HH__
#define __XRDFILECACHE_IO_FILE_BLOCK_HH__
//----------------------------------------------------------------------------------
// Copyright (c) 2014 by Board of Trustees of the Leland Stanford, Jr., University
// Author: Alja Mrak-Tadel, Matevz Tadel, Brian Bockelman
//----------------------------------------------------------------------------------
// 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 General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with XRootD.  If not, see <http://www.gnu.org/licenses/>.
//----------------------------------------------------------------------------------
#include <map>
#include <string>
 
#include "XrdOuc/XrdOucCache2.hh"
#include "XrdSys/XrdSysPthread.hh"
 
#include "XrdFileCacheIO.hh"
 
class XrdSysError;
class XrdOssDF;
 
namespace XrdFileCache
{
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
class IOFileBlock : public IO
{
public:
   //------------------------------------------------------------------------
   //------------------------------------------------------------------------
   IOFileBlock(XrdOucCacheIO2 *io, XrdOucCacheStats &stats, Cache &cache);
 
   //------------------------------------------------------------------------
   //------------------------------------------------------------------------
   ~IOFileBlock();
 
   //---------------------------------------------------------------------
   //---------------------------------------------------------------------
   virtual XrdOucCacheIO *Detach();
 
   //---------------------------------------------------------------------
   //---------------------------------------------------------------------
   using XrdOucCacheIO2::Read;
 
   virtual int Read(char *Buffer, long long Offset, int Length);
 
   virtual bool ioActive();
   
   virtual int  Fstat(struct stat &sbuff);
 
   virtual long long FSize();
 
private:
   long long                  m_blocksize;       
   std::map<int, File*>       m_blocks;          
   XrdSysMutex                m_mutex;           
   struct stat               *m_localStat;
   Info                       m_info;
   XrdOssDF*                  m_infoFile;
 
   void  GetBlockSizeFromPath();
   int   initLocalStat();
   File* newBlockFile(long long off, int blocksize);
   void  CloseInfoFile();
};
}
 
#endif