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DCacheFile.h

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00001 #ifndef DCACHE_ADAPTOR_DCACHE_FILE_H
00002 # define DCACHE_ADAPTOR_DCACHE_FILE_H
00003 
00004 # include "Utilities/StorageFactory/interface/Storage.h"
00005 # include "Utilities/StorageFactory/interface/IOFlags.h"
00006 # include <string>
00007 
00008 class DCacheFile : public Storage
00009 {
00010 public:
00011   DCacheFile (void);
00012   DCacheFile (IOFD fd);
00013   DCacheFile (const char *name, int flags = IOFlags::OpenRead, int perms = 0666);
00014   DCacheFile (const std::string &name, int flags = IOFlags::OpenRead, int perms = 0666);
00015   ~DCacheFile (void);
00016 
00017   virtual void  create (const char *name,
00018                         bool exclusive = false,
00019                         int perms = 0666);
00020   virtual void  create (const std::string &name,
00021                         bool exclusive = false,
00022                         int perms = 0666);
00023   virtual void  open (const char *name,
00024                       int flags = IOFlags::OpenRead,
00025                       int perms = 0666);
00026   virtual void  open (const std::string &name,
00027                       int flags = IOFlags::OpenRead,
00028                       int perms = 0666);
00029 
00030   using Storage::read;
00031   using Storage::write;
00032   using Storage::position;
00033 
00034   virtual IOSize        read (void *into, IOSize n);
00035   virtual IOSize        write (const void *from, IOSize n);
00036 
00037   virtual IOOffset      position (IOOffset offset, Relative whence = SET);
00038   virtual void          resize (IOOffset size);
00039 
00040   virtual void          close (void);
00041   virtual void          abort (void);
00042 
00043 private:
00044   IOFD                  m_fd;
00045   bool                  m_close;
00046   std::string           m_name;
00047 };
00048 
00049 #endif // DCACHE_ADAPTOR_DCACHE_FILE_H

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