Abstract_File.h

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#ifndef joedb_Abstract_File_declared
#define joedb_Abstract_File_declared
 
#include <stddef.h>
#include <stdint.h>
 
namespace joedb
{
 /// @ingroup journal
 class Abstract_File
 {
  public:
   virtual int64_t get_size() const {return -1;}
   virtual size_t pread(char *data, size_t size, int64_t offset) const {return 0;}
   virtual void pwrite(const char *data, size_t size, int64_t offset) {}
 
   virtual void sync() {}
 
   virtual void shared_lock(int64_t start, int64_t size) {}
   virtual void exclusive_lock(int64_t start, int64_t size) {}
   virtual void unlock(int64_t start, int64_t size) noexcept {}
 
   virtual ~Abstract_File() = default;
 };
}
 
#endif