/data/refman/pasoursint/CMSSW_5_3_0/src/Utilities/StorageFactory/interface/StorageAccountProxy.h

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#ifndef STORAGE_FACTORY_STORAGE_ACCOUNT_PROXY_H
# define STORAGE_FACTORY_STORAGE_ACCOUNT_PROXY_H

# include "Utilities/StorageFactory/interface/StorageAccount.h"
# include "Utilities/StorageFactory/interface/Storage.h"
# include <string>

class StorageAccountProxy : public Storage
{
public:
  StorageAccountProxy (const std::string &storageClass, Storage *baseStorage);
  ~StorageAccountProxy (void);

  using Storage::read;
  using Storage::write;

  virtual bool          prefetch (const IOPosBuffer *what, IOSize n);
  virtual IOSize        read (void *into, IOSize n);
  virtual IOSize        read (void *into, IOSize n, IOOffset pos);
  virtual IOSize        readv (IOBuffer *into, IOSize n);
  virtual IOSize        readv (IOPosBuffer *into, IOSize n);
  virtual IOSize        write (const void *from, IOSize n);
  virtual IOSize        write (const void *from, IOSize n, IOOffset pos);
  virtual IOSize        writev (const IOBuffer *from, IOSize n);
  virtual IOSize        writev (const IOPosBuffer *from, IOSize n);

  virtual IOOffset      position (IOOffset offset, Relative whence = SET);
  virtual void          resize (IOOffset size);
  virtual void          flush (void);
  virtual void          close (void);

protected:
  std::string           m_storageClass;
  Storage               *m_baseStorage;

  StorageAccount::Counter &m_statsRead;
  StorageAccount::Counter &m_statsReadV;
  StorageAccount::Counter &m_statsWrite;
  StorageAccount::Counter &m_statsWriteV;
  StorageAccount::Counter &m_statsPosition;
  StorageAccount::Counter &m_statsPrefetch;
};

#endif // STORAGE_FACTORY_STORAGE_ACCOUNT_PROXY_H